24 files changed, 4993 insertions, 61 deletions

diff --git a/libmaple/bootVect.h b/libmaple/bootVect.h
deleted file mode 100644
index 26d876e..0000000
--- a/libmaple/bootVect.h
+++ /dev/null
@@ -1,61 +0,0 @@
-/* *****************************************************************************
- * The MIT License
- *
- * Copyright (c) 2010 Andrew Meyer.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- * ****************************************************************************/
-
-
-/**
- *  @file HardwareUsb.h
- *
- *  @brief Defines the maple boot vector structure
- */
-
-#ifndef _BOOTVECT_H_
-#define _BOOTVECT_H_
-
-#define BOOTLOADER_VECT_TABLE ((uint32*)0x20000000)
-
-#ifdef __cplusplus
-extern "C"{
-#endif
-
-typedef void (*FuncPtr)(void);
-
-typedef struct {
-  FuncPtr serial_tx_cb;
-  FuncPtr serial_rx_cb;
-  FuncPtr serial_linecoding_cb;
-  uint32* serial_count_in;
-  uint32* serial_count_out;
-  uint8* serial_buffer_out;
-  void* linecoding;
-  uint8 major_rev;
-  uint8 minor_rev;
-  void* usb_device_ptr;
-  void* usb_local_obj_ptr;
-} BootVectTable;
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif // _BOOTVECT_H_
diff --git a/libmaple/usb/README b/libmaple/usb/README
new file mode 100644
index 0000000..e542dde
--- /dev/null
+++ b/libmaple/usb/README
@@ -0,0 +1,68 @@
+The USB submodule of libmaple is responsible for:
+    initilizing the usb peripheral, scaling the peripheral clocks appropriately, 
+    enabling the interrupt channels to usb, defining the usb isr, resetting the usb
+    disc pin (used to tell the host were alive). Additionally, the usb submodule defines
+    the virtual com port usb applications that is available to all user sketches via Usb.print()
+    and others. 
+
+To use it:
+   Call Usb.init() to enable the IRQ channel, configure the clocks,
+     pull down usb_disc, and setup the vcom buffers
+   Usb.print/ln, available(), read(), write() implement the same
+     interface as Serial1/2/3
+   
+   
+Current Status:
+    Currently, the USB submodule relies on the low level core library provided by ST to access the 
+    usb peripheral registers and implement the usb transfer protocol for control endpoint transfers. 
+    The high level virtual com port application is unfortunately hard to untangle from this low level
+    dependence, and when a new USB core library is written (to nix ST dependence) changes will likely
+    have to be made to virtual com application code. Ideally, the new core library should mimick the 
+    form of MyUSB (LUFA), since this library (USB for AVR) is growing in popularity and in example 
+    applications. Additionally, the usb lib here relies on low level hardware functions that were 
+    just ripped out of the bootloader code (for simplicity) but clearly this should be replaced with 
+    direct accesses to functions provided elsewhere in libmaple.
+
+    The virtual com port serves two important purposes. 1) is allows serial data transfers between
+    user sketches an a host computer. 2) is allows the host machine to issue a system reset by 
+    asserting the DTR signal. After reset, Maple will run the DFU bootloader for a few seconds, 
+    during which the user can begin a DFU download operation ('downloads' application binary into 
+    RAM/FLASH). This without this virtual com port, it would be necessary to find an alternative means
+    to reset the chip in order to enable the bootloader.
+
+    If you would like to develop your own USB application for whatever reason (uses faster isochronous
+    enpoints for streaming audio, or implements the USB HID or Mass Storage specs for examples) then
+    ensure that you leave some hook for resetting Maple remotely in order to spin up the DFU bootloader. 
+    Please make sure to give yourself a unique vendor/product ID pair in your application, as some 
+    operating systems will assign a host-side driver based on these tags.  
+
+    It would be possible to build a compound usb device, that implements endpoints for both the virtual
+    COM port as well as some other components (mass sotrage etc.) however this turns out to be a burden 
+    from the host driver side, as windows and *nix handle compound usb devices quite differently. 
+
+    Be mindful that running the usb application isnt "free." The device must respond to periodic bus 
+    activity (every few milliseconds) by servicing an ISR. Therefore the usb application should be disabled 
+    inside of timing critical applications. In order to disconnect the device from the host, the USB_DISC
+    pin can be asserted (on Maple v1,2,3 this is GPIOC,12). Alternatively, the NVIC can be directly configured
+    to disable the USB LP/HP IRQ's
+
+    This library should exposed through usb.h, do not include any other files direcly in your application. 
+
+    The files inside of usb_lib were provided by ST and are subject to their own license, all other files were
+    written by the LeafLabs team and fall under the MIT license. 
+
+Integration with libmaple:
+    The current usb lib is ported directly from the maple bootloader code, adapted to be a virtual com rather than
+    a DFU device. That means several functions are redefined locally that could have been pulled from elsewhere
+    in libmaple. Thus, ths usb module depends absolutely zero on libmaple, it even ensures that clocks are configured
+    correctly for its operation.
+
+Todo:
+    - write custom low level usb stack to strip out any remaining dependence on ST code
+    - remove dependence on hardware.c, since any functions here really should have their
+      own analogues elsewhere inside libmaple
+    - add a high level usb application library that would allow users to make their own
+      HID/Mass Storage/Audio/Video devices.
+    - implement a Usb.link(SerialX) that forces a passthrough
+      the host computer virtual com to SerialX, and utilizes the
+      line_config commands correctly (sets baud etc)
\ No newline at end of file
diff --git a/libmaple/usb/descriptors.c b/libmaple/usb/descriptors.c
new file mode 100644
index 0000000..5038709
--- /dev/null
+++ b/libmaple/usb/descriptors.c
@@ -0,0 +1,168 @@
+/* insert license */
+
+
+#include "descriptors.h"
+#include "libmaple.h"
+#include "usb_config.h"
+
+const USB_Descriptor_Device usbVcomDescriptor_Device = {
+ bLength:              sizeof(USB_Descriptor_Device), 
+ bDescriptorType:      USB_DESCRIPTOR_TYPE_DEVICE,
+ bcdUSB:               0x0200,
+ bDeviceClass:         USB_DEVICE_CLASS_CDC,
+ bDeviceSubClass:      USB_DEVICE_SUBCLASS_CDC,
+ bDeviceProtocol:      0x00,
+ bMaxPacketSize0:      0x40,
+ idVendor:             VCOM_ID_VENDOR,
+ idProduct:            VCOM_ID_PRODUCT,
+ bcdDevice:            0x0200,
+ iManufacturer:        0x01,
+ iProduct:             0x02,
+ iSerialNumber:        0x00,
+ bNumConfigurations:   0x01
+};
+
+const USB_Descriptor_Config usbVcomDescriptor_Config = {
+ bLength:                   0x09,//sizeof(USB_Descriptor_Config_Header),
+ bDescriptorType:           USB_DESCRIPTOR_TYPE_CONFIGURATION,
+ wTotalLength:              0x43,//sizeof(USB_Descriptor_Config),
+ bNumInterfaces:            0x02,
+ bConfigurationValue:       0x01,
+ iConfiguration:            0x00,
+ bmAttributes:              (USB_CONFIG_ATTR_BUSPOWERED | USB_CONFIG_ATTR_SELF_POWERED),
+ bMaxPower:                 USB_CONFIG_MAX_POWER,
+
+ CCI_Interface:
+   {
+   bLength:                  0x09,//sizeof(USB_Descriptor_Interface),
+   bDescriptorType:          USB_DESCRIPTOR_TYPE_INTERFACE,
+   bInterfaceNumber:         0x00,
+   bAlternateSetting:        0x00,
+   bNumEndpoints:            0x01,
+   bInterfaceClass:          0x02,
+   bInterfaceSubClass:       0x02,
+   bInterfaceProtocol:       0x01,
+   iInterface:               0x00
+   },
+
+ CDC_Functional_IntHeader:
+   {
+   bLength:                  0x05,//sizeof(CDC_FUNCTIONAL_DESCRIPTOR(2)),
+   bDescriptorType:          0x24,
+   SubType:                  0x00,
+   Data:                     {0x01, 0x10}
+   },
+
+ CDC_Functional_CallManagement:
+   {
+   bLength:                  0x05,//sizeof(CDC_FUNCTIONAL_DESCRIPTOR(2)),
+   bDescriptorType:          0x24,
+   SubType:                  0x01,
+   Data:                     {0x03, 0x01}
+   },
+
+ CDC_Functional_ACM:
+   {
+   bLength:                  0x04,//sizeof(CDC_FUNCTIONAL_DESCRIPTOR(1)),
+   bDescriptorType:          0x24,
+   SubType:                  0x02,
+   Data:                     {0x06}
+   },
+
+ CDC_Functional_Union:
+   {
+   bLength:                  0x05,//sizeof(CDC_FUNCTIONAL_DESCRIPTOR(2)),
+   bDescriptorType:          0x24,
+   SubType:                  0x06,
+   Data:                     {0x00, 0x01}
+   },
+
+ // ManagementEndpoint: 
+ //  {
+ EP1_bLength:                 0x07,//sizeof(USB_Descriptor_Endpoint),
+ EP1_bDescriptorType:         USB_DESCRIPTOR_TYPE_ENDPOINT,
+ EP1_bEndpointAddress:        (USB_DESCRIPTOR_ENDPOINT_IN | VCOM_NOTIFICATION_EPNUM),
+ EP1_bmAttributes:            EP_TYPE_INTERRUPT,
+ EP1_wMaxPacketSize0:         VCOM_NOTIFICATION_EPSIZE,
+ EP1_wMaxPacketSize1:         0x00,
+ EP1_bInterval:               0xFF,
+ //  },
+
+ // DCI_Interface:
+ //   {
+   DCI_bLength:                0x09,//sizeof(USB_Descriptor_Interface),
+   DCI_bDescriptorType:        USB_DESCRIPTOR_TYPE_INTERFACE,
+   DCI_bInterfaceNumber:       0x01,
+   DCI_bAlternateSetting:      0x00,
+   DCI_bNumEndpoints:          0x02,
+   DCI_bInterfaceClass:        0x0A,
+   DCI_bInterfaceSubClass:     0x00,
+   DCI_bInterfaceProtocol:     0x00,
+   DCI_iInterface:             0x00,
+   //   },
+
+ //DataOutEndpoint:
+ // {
+ //  },
+ EP2_bLength:               0x07,//sizeof(USB_Descriptor_Endpoint),
+ EP2_bDescriptorType:       USB_DESCRIPTOR_TYPE_ENDPOINT,
+ EP2_bEndpointAddress:      (USB_DESCRIPTOR_ENDPOINT_OUT | VCOM_RX_EPNUM),
+ EP2_bmAttributes:          EP_TYPE_BULK,
+ EP2_wMaxPacketSize0:       VCOM_RX_EPSIZE,
+ EP2_wMaxPacketSize1:       0x00,
+ EP2_bInterval:             0x00,
+
+
+ // DataInEndpoint:
+ // {
+ EP3_bLength:               0x07,//sizeof(USB_Descriptor_Endpoint),
+ EP3_bDescriptorType:       USB_DESCRIPTOR_TYPE_ENDPOINT,
+ EP3_bEndpointAddress:      (USB_DESCRIPTOR_ENDPOINT_IN | VCOM_TX_EPNUM),
+ EP3_bmAttributes:          EP_TYPE_BULK,
+ EP3_wMaxPacketSize0:       VCOM_TX_EPSIZE,
+ EP3_wMaxPacketSize1:       0x00,
+ EP3_bInterval:             0x00
+
+ //  }
+};
+
+/* 
+   String Identifiers:
+
+   we may choose to specify any or none of the following string
+   identifiers:
+  
+   iManufacturer:    LeafLabs
+   iProduct:         Maple R3
+   iSerialNumber:    NONE
+   iConfiguration:   NONE
+   iInterface(CCI):  NONE
+   iInterface(DCI):  NONE
+
+   additionally we must provide the unicode language identifier,
+   which is 0x0409 for US English
+*/
+
+const uint8 usbVcomDescriptor_LangID[USB_DESCRIPTOR_STRING_LEN(1)] = 
+{
+  USB_DESCRIPTOR_STRING_LEN(1),
+  USB_DESCRIPTOR_TYPE_STRING,
+  0x09,
+  0x04
+};
+
+const uint8 usbVcomDescriptor_iManufacturer[USB_DESCRIPTOR_STRING_LEN(8)] = 
+{
+  USB_DESCRIPTOR_STRING_LEN(8),
+  USB_DESCRIPTOR_TYPE_STRING,
+  'L', 0, 'e', 0, 'a', 0, 'f', 0, 
+  'L', 0, 'a', 0, 'b', 0, 's', 0
+};
+
+const uint8 usbVcomDescriptor_iProduct[USB_DESCRIPTOR_STRING_LEN(8)] = 
+{
+  USB_DESCRIPTOR_STRING_LEN(8),
+  USB_DESCRIPTOR_TYPE_STRING,
+  'M', 0, 'a', 0, 'p', 0, 'l', 0, 
+  'e', 0, ' ', 0, 'R', 0, '3', 0
+};
diff --git a/libmaple/usb/descriptors.h b/libmaple/usb/descriptors.h
new file mode 100644
index 0000000..6e96024
--- /dev/null
+++ b/libmaple/usb/descriptors.h
@@ -0,0 +1,202 @@
+/* insert license */
+#ifndef __DESCRIPTORS_H
+#define __DESCRIPTORS_H
+
+
+#include "libmaple.h"
+#include "usb_lib.h"
+
+#define USB_DESCRIPTOR_TYPE_DEVICE        0x01
+#define USB_DESCRIPTOR_TYPE_CONFIGURATION 0x02
+#define USB_DESCRIPTOR_TYPE_STRING        0x03
+#define USB_DESCRIPTOR_TYPE_INTERFACE     0x04
+#define USB_DESCRIPTOR_TYPE_ENDPOINT      0x05
+
+#define USB_DEVICE_CLASS_CDC              0x02
+#define USB_DEVICE_SUBCLASS_CDC           0x00
+
+#define USB_CONFIG_ATTR_BUSPOWERED        0b10000000
+#define USB_CONFIG_ATTR_SELF_POWERED       0b11000000
+
+#define EP_TYPE_INTERRUPT                 0x03
+#define EP_TYPE_BULK                      0x02
+
+#define USB_DESCRIPTOR_ENDPOINT_IN        0x80
+#define USB_DESCRIPTOR_ENDPOINT_OUT       0x00
+
+#define USB_DESCRIPTOR_STRING_LEN(x) (2 + (x << 1))
+
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+#define USB_DESCRIPTOR_STRING(len)		\
+  struct {					\
+    uint8 bLength;				\
+    uint8 bDescriptorType;			\
+    uint16 bString[len];			\
+  }
+
+#define CDC_FUCNTIONAL_DESCRIPTOR(DataSize)	\
+  struct					\
+  {						\
+    uint8 bLength;				\
+    uint8 bDescriptorType;			\
+    uint8 SubType;				\
+    uint8 Data[DataSize];			\
+  }
+
+typedef struct {
+  uint8                 bLength;
+  uint8                 bDescriptorType;
+  uint16                bcdUSB;
+  uint8                 bDeviceClass;
+  uint8                 bDeviceSubClass;
+  uint8                 bDeviceProtocol;
+  uint8                 bMaxPacketSize0;
+  uint16                idVendor;
+  uint16                idProduct;
+  uint16                bcdDevice;
+  uint8                 iManufacturer;
+  uint8                 iProduct;
+  uint8                 iSerialNumber;
+  uint8                 bNumConfigurations;
+} USB_Descriptor_Device;
+
+typedef struct {
+  uint8_t                 bLength;
+  uint8_t                 bDescriptorType;
+  uint16_t                wTotalLength;
+  uint8_t                 bNumInterfaces;
+  uint8_t                 bConfigurationValue;
+  uint8_t                 iConfiguration;
+  uint8_t                 bmAttributes;
+  uint8_t                 bMaxPower;
+} USB_Descriptor_Config_Header;
+
+typedef struct {
+  uint8_t                 bLength;
+  uint8_t                 bDescriptorType;
+  uint8_t                 bInterfaceNumber;
+  uint8_t                 bAlternateSetting;
+  uint8_t                 bNumEndpoints;
+  uint8_t                 bInterfaceClass;
+  uint8_t                 bInterfaceSubClass;
+  uint8_t                 bInterfaceProtocol;
+  uint8_t                 iInterface;
+} USB_Descriptor_Interface;
+
+typedef struct {
+  uint8_t                 bLength;
+  uint8_t                 bDescriptorType;
+  uint8_t                 bEndpointAddress;
+  uint8_t                 bmAttributes;
+  uint16_t                wMaxPacketSize;
+  uint8_t                 bInterval;
+} USB_Descriptor_Endpoint;
+
+typedef struct {
+  /* config header */
+  uint8_t                 bLength;
+  uint8_t                 bDescriptorType;
+  uint16_t                wTotalLength;
+  uint8_t                 bNumInterfaces;
+  uint8_t                 bConfigurationValue;
+  uint8_t                 iConfiguration;
+  uint8_t                 bmAttributes;
+  uint8_t                 bMaxPower;
+
+  USB_Descriptor_Interface            CCI_Interface;
+  struct {						
+    uint8 bLength;				
+    uint8 bDescriptorType;			
+    uint8 SubType;				
+    uint8 Data[2];			
+  }                                   CDC_Functional_IntHeader;
+  struct {						
+    uint8 bLength;				
+    uint8 bDescriptorType;			
+    uint8 SubType;				
+    uint8 Data[2];			
+  }                                   CDC_Functional_CallManagement;
+  struct {						
+    uint8 bLength;				
+    uint8 bDescriptorType;			
+    uint8 SubType;				
+    uint8 Data[1];			
+  }                                   CDC_Functional_ACM;
+  struct {						
+    uint8 bLength;				
+    uint8 bDescriptorType;			
+    uint8 SubType;				
+    uint8 Data[2];			
+  }                                   CDC_Functional_Union;
+
+  /*
+  USB_Descriptor_Endpoint             ManagementEndpoint;
+  */
+  uint8_t                 EP1_bLength;
+  uint8_t                 EP1_bDescriptorType;
+  uint8_t                 EP1_bEndpointAddress;
+  uint8_t                 EP1_bmAttributes;
+  uint8_t                 EP1_wMaxPacketSize0;
+  uint8_t                 EP1_wMaxPacketSize1;
+  uint8_t                 EP1_bInterval;
+
+  /*
+  USB_Descriptor_Interface            DCI_Interface;
+  */
+
+  uint8_t                 DCI_bLength;
+  uint8_t                 DCI_bDescriptorType;
+  uint8_t                 DCI_bInterfaceNumber;
+  uint8_t                 DCI_bAlternateSetting;
+  uint8_t                 DCI_bNumEndpoints;
+  uint8_t                 DCI_bInterfaceClass;
+  uint8_t                 DCI_bInterfaceSubClass;
+  uint8_t                 DCI_bInterfaceProtocol;
+  uint8_t                 DCI_iInterface;
+
+  /*
+  USB_Descriptor_Endpoint             DataOutEndpoint;
+  USB_Descriptor_Endpoint             DataInEndpoint;
+  */
+
+  uint8_t                 EP2_bLength;
+  uint8_t                 EP2_bDescriptorType;
+  uint8_t                 EP2_bEndpointAddress;
+  uint8_t                 EP2_bmAttributes;
+  uint8_t                 EP2_wMaxPacketSize0;
+  uint8_t                 EP2_wMaxPacketSize1;
+  uint8_t                 EP2_bInterval;
+
+  uint8_t                 EP3_bLength;
+  uint8_t                 EP3_bDescriptorType;
+  uint8_t                 EP3_bEndpointAddress;
+  uint8_t                 EP3_bmAttributes;
+  uint8_t                 EP3_wMaxPacketSize0;
+  uint8_t                 EP3_wMaxPacketSize1;
+  uint8_t                 EP3_bInterval;
+
+  
+}USB_Descriptor_Config;
+ 
+  typedef struct {
+    uint8          bLength;
+    uint8          bDescriptorType;
+    uint16         bString[];
+  } USB_Descriptor_String;
+
+extern const USB_Descriptor_Device usbVcomDescriptor_Device;
+extern const USB_Descriptor_Config usbVcomDescriptor_Config;
+
+extern const uint8 usbVcomDescriptor_LangID[USB_DESCRIPTOR_STRING_LEN(1)];
+extern const uint8 usbVcomDescriptor_iManufacturer[USB_DESCRIPTOR_STRING_LEN(8)];
+extern const uint8 usbVcomDescriptor_iProduct[USB_DESCRIPTOR_STRING_LEN(8)];
+
+#if defined(__cplusplus)
+  }
+#endif
+
+#endif  // __DESCRIPTORS_H
diff --git a/libmaple/usb/usb.c b/libmaple/usb/usb.c
new file mode 100644
index 0000000..bbea77d
--- /dev/null
+++ b/libmaple/usb/usb.c
@@ -0,0 +1,470 @@
+/* *****************************************************************************
+ * The MIT License
+ *
+ * Copyright (c) 2010 LeafLabs LLC.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ * ****************************************************************************/
+
+/**
+ *  @file usb.c
+ *
+ *  @brief usb-specific hardware setup, NVIC, clocks, and usb activities
+ *  in the pre-attached state. includes some of the lower level callbacks 
+ *  needed by the usb library, like suspend,resume,init,etc
+ */
+
+#include "usb.h"
+#include "libmaple.h"
+#include "usb_lib.h"
+#include "gpio.h"
+#include "usb_hardware.h"
+
+#include "usb_config.h"
+#include "usb_callbacks.h"
+#include "usb_lib.h"
+
+/* persistent usb structs */
+
+volatile uint32 bDeviceState = UNCONNECTED;
+volatile uint16_t wIstr = 0;
+volatile bIntPackSOF  = 0;
+
+DEVICE Device_Table = 
+  {
+    NUM_ENDPTS,
+    1
+  };
+
+DEVICE_PROP Device_Property = 
+  {
+    usbInit,
+    usbReset,
+    usbStatusIn,
+    usbStatusOut,
+    usbDataSetup,
+    usbNoDataSetup,
+    usbGetInterfaceSetting,
+    usbGetDeviceDescriptor,
+    usbGetConfigDescriptor,
+    usbGetStringDescriptor,
+    NOP_Process,
+    0,
+    bMaxPacketSize
+  };
+
+USER_STANDARD_REQUESTS User_Standard_Requests = 
+  {
+    NOP_Process,
+    usbSetConfiguration,
+    NOP_Process,
+    NOP_Process,
+    NOP_Process,
+    NOP_Process,
+    NOP_Process,
+    NOP_Process,
+    usbSetDeviceAddress
+  };
+
+void (*pEpInt_IN[7])(void) =
+{ 
+  vcomDataTxCb,
+  vcomManagementCb,
+  NOP_Process,
+  NOP_Process,
+  NOP_Process,
+  NOP_Process,
+  NOP_Process,
+};
+
+void (*pEpInt_OUT[7])(void) =
+{
+  NOP_Process,
+  NOP_Process,
+  vcomDataRxCb,
+  NOP_Process,
+  NOP_Process,
+  NOP_Process,
+  NOP_Process,
+};
+
+struct
+{
+  volatile RESUME_STATE eState;
+  volatile uint8 bESOFcnt;
+} ResumeS;
+
+void setupUSB (void) {
+  gpio_set_mode(USB_DISC_BANK,
+		USB_DISC_PIN,
+		GPIO_MODE_OUTPUT_PP);
+
+  /* setup the apb1 clock for USB */
+  pRCC->APB1ENR |= 0x00800000;
+
+  /* initialize the usb application */
+  gpio_write_bit(USB_DISC_BANK,USB_DISC_PIN,0);  /* present ourselves to the host */
+  USB_Init();  /* low level init routine provided by st lib */
+
+}
+
+void usbSuspend(void) {
+  u16 wCNTR;
+  wCNTR = _GetCNTR();
+  wCNTR |= CNTR_FSUSP | CNTR_LPMODE;
+  _SetCNTR(wCNTR);
+
+  /* run any power reduction handlers */
+  bDeviceState = SUSPENDED;
+}
+
+void usbResumeInit(void) {
+  u16 wCNTR;
+
+  /* restart any clocks that had been stopped */
+
+  wCNTR = _GetCNTR();
+  wCNTR &= (~CNTR_LPMODE);
+  _SetCNTR(wCNTR);
+
+  /* undo power reduction handlers here */
+  _SetCNTR(ISR_MSK);
+
+}
+
+void usbResume(RESUME_STATE eResumeSetVal) {
+  u16 wCNTR;
+
+  if (eResumeSetVal != RESUME_ESOF)
+    ResumeS.eState = eResumeSetVal;
+
+  switch (ResumeS.eState)
+    {
+    case RESUME_EXTERNAL:
+      usbResumeInit();
+      ResumeS.eState = RESUME_OFF;
+      break;
+    case RESUME_INTERNAL:
+      usbResumeInit();
+      ResumeS.eState = RESUME_START;
+      break;
+    case RESUME_LATER:
+      ResumeS.bESOFcnt = 2;
+      ResumeS.eState = RESUME_WAIT;
+      break;
+    case RESUME_WAIT:
+      ResumeS.bESOFcnt--;
+      if (ResumeS.bESOFcnt == 0)
+        ResumeS.eState = RESUME_START;
+      break;
+    case RESUME_START:
+      wCNTR = _GetCNTR();
+      wCNTR |= CNTR_RESUME;
+      _SetCNTR(wCNTR);
+      ResumeS.eState = RESUME_ON;
+      ResumeS.bESOFcnt = 10;
+      break;
+    case RESUME_ON:
+      ResumeS.bESOFcnt--;
+      if (ResumeS.bESOFcnt == 0)
+	{
+	  wCNTR = _GetCNTR();
+	  wCNTR &= (~CNTR_RESUME);
+	  _SetCNTR(wCNTR);
+	  ResumeS.eState = RESUME_OFF;
+	}
+      break;
+    case RESUME_OFF:
+    case RESUME_ESOF:
+    default:
+      ResumeS.eState = RESUME_OFF;
+      break;
+    }
+}
+
+RESULT usbPowerOn(void) {
+  u16 wRegVal;
+
+  wRegVal = CNTR_FRES;
+  _SetCNTR(wRegVal);
+
+  wInterrupt_Mask = 0;
+  _SetCNTR(wInterrupt_Mask);
+  _SetISTR(0);
+  wInterrupt_Mask = CNTR_RESETM | CNTR_SUSPM | CNTR_WKUPM; /* the bare minimum */
+  _SetCNTR(wInterrupt_Mask);
+
+  return USB_SUCCESS;
+}
+
+RESULT usbPowerOff(void) {
+  _SetCNTR(CNTR_FRES);
+  _SetISTR(0);
+  _SetCNTR(CNTR_FRES + CNTR_PDWN);
+
+  /* note that all weve done here is powerdown the 
+     usb peripheral. we have no disabled the clocks,
+     pulled the usb_disc pin back up, or reset the
+     application state machines */
+
+  return USB_SUCCESS;
+}
+
+void usbEnbISR(void) {
+  NVIC_InitTypeDef NVIC_InitStructure;
+
+
+  NVIC_InitStructure.NVIC_IRQChannel = USB_LP_IRQ;
+  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
+  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
+  NVIC_InitStructure.NVIC_IRQChannelCmd = TRUE;
+  nvicInit(&NVIC_InitStructure);
+}
+
+void usbDsbISR(void) {
+  NVIC_InitTypeDef NVIC_InitStructure;
+  NVIC_InitStructure.NVIC_IRQChannel = USB_LP_IRQ;
+  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
+  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
+  NVIC_InitStructure.NVIC_IRQChannelCmd = FALSE;
+  nvicInit(&NVIC_InitStructure);
+}
+
+/* overloaded ISR routine, this is the main usb ISR */
+void usb_lpIRQHandler(void) {
+wIstr = _GetISTR();
+
+/* go nuts with the preproc switches since this is an ISTR and must be FAST */
+#if (ISR_MSK & ISTR_RESET)
+if (wIstr & ISTR_RESET & wInterrupt_Mask)
+  {
+    _SetISTR((u16)CLR_RESET);
+    Device_Property.Reset();
+  }
+#endif
+
+
+#if (ISR_MSK & ISTR_DOVR)
+if (wIstr & ISTR_DOVR & wInterrupt_Mask)
+  {
+    _SetISTR((u16)CLR_DOVR);
+  }
+#endif
+
+
+#if (ISR_MSK & ISTR_ERR)
+if (wIstr & ISTR_ERR & wInterrupt_Mask)
+  {
+    _SetISTR((u16)CLR_ERR);
+  }
+#endif
+
+
+#if (ISR_MSK & ISTR_WKUP)
+if (wIstr & ISTR_WKUP & wInterrupt_Mask)
+  {
+    _SetISTR((u16)CLR_WKUP);
+    usbResume(RESUME_EXTERNAL);
+  }
+#endif
+
+/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
+#if (ISR_MSK & ISTR_SUSP)
+if (wIstr & ISTR_SUSP & wInterrupt_Mask)
+  {
+
+    /* check if SUSPEND is possible */
+    if (F_SUSPEND_ENABLED)
+      {
+	usbSuspend();
+      }
+    else
+      {
+	/* if not possible then resume after xx ms */
+	usbResume(RESUME_LATER);
+      }
+    /* clear of the ISTR bit must be done after setting of CNTR_FSUSP */
+    _SetISTR((u16)CLR_SUSP);
+  }
+#endif
+
+
+#if (ISR_MSK & ISTR_SOF)
+if (wIstr & ISTR_SOF & wInterrupt_Mask)
+  {
+    _SetISTR((u16)CLR_SOF);
+    bIntPackSOF++;
+  }
+#endif
+
+
+#if (ISR_MSK & ISTR_ESOF)
+if (wIstr & ISTR_ESOF & wInterrupt_Mask)
+  {
+    _SetISTR((u16)CLR_ESOF);
+    /* resume handling timing is made with ESOFs */
+    usbResume(RESUME_ESOF); /* request without change of the machine state */
+  }
+#endif
+
+/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
+#if (ISR_MSK & ISTR_CTR)
+if (wIstr & ISTR_CTR & wInterrupt_Mask)
+  {
+    /* servicing of the endpoint correct transfer interrupt */
+    /* clear of the CTR flag into the sub */
+    CTR_LP(); /* low priority ISR defined in the usb core lib */
+  }
+#endif
+
+/* if we are about to reset from the DTR signal, then dont return
+   to user, instead return from the ISR into a wait slide */
+ if (reset_state == RESET_NOW) {
+   reset_state = START;
+   unsigned int target = (unsigned int)usbWaitReset | 0x1;
+
+   asm volatile("mov r0, %[stack_top]      \n\t"             // Reset the stack
+		"mov sp, r0                \n\t"
+		"mov r0, #1                \n\t"
+		"mov r1, %[target_addr]    \n\t"
+		"mov r2, %[cpsr]           \n\t"
+		"push {r2}                 \n\t"             // Fake xPSR
+		"push {r1}                 \n\t"             // Target address for PC
+		"push {r0}                 \n\t"             // Fake LR
+		"push {r0}                 \n\t"             // Fake R12
+		"push {r0}                 \n\t"             // Fake R3
+		"push {r0}                 \n\t"             // Fake R2
+		"push {r0}                 \n\t"             // Fake R1
+		"push {r0}                 \n\t"             // Fake R0
+		"mov lr, %[exc_return]     \n\t"
+		"bx lr"
+		:
+		: [stack_top] "r" (STACK_TOP),
+		  [target_addr] "r" (target),
+		  [exc_return] "r" (EXC_RETURN),
+		  [cpsr] "r" (DEFAULT_CPSR)
+		: "r0", "r1", "r2");
+   // Should never get here.
+ }
+}
+
+void usbWaitReset(void) {
+  static count=1000000;
+  while (count-- >0);
+  systemHardReset();
+}
+
+/* copies data out of sendBuf into the packet memory for 
+   usb, but waits until any previous usb transmissions have 
+   completed before doing this. It returns without waiting
+   for its data to be sent. most efficient when 64 bytes are copied
+   at a time. users responsible for not overflowing sendbuf 
+   with len! if > 64 bytes are being sent, then the function
+   will block at every 64 byte packet
+*/
+int16 usbSendBytes(uint8* sendBuf, uint16 len) {
+/*   while (countTx != 0) { */
+/*     if (reset_state == NDTR_NRTS) { */
+/*       return 0; */
+/*     } */
+/*   }/\* wait for pipe to be clear *\/ */
+
+  if (reset_state == NDTR_NRTS) {
+    return -1; /* indicates to caller to stop trying, were not connected */
+  }
+
+  /* ideally we should wait here, but it gets stuck
+     for some reason. countTx wont decrement when 
+     theres no host side port reading the data, this is
+     known, but even if we add the check for NDTR_NRTS it
+     still gets stuck...*/
+  if (countTx != 0) {
+    return 0; /* indicated to caller to keep trying, were just busy */
+  }
+
+  uint16 sent = len; 
+
+  while (len > VCOM_TX_EPSIZE) {
+    countTx = VCOM_TX_EPSIZE;
+
+    UserToPMABufferCopy(sendBuf,VCOM_TX_ADDR,VCOM_TX_EPSIZE);
+    _SetEPTxCount(VCOM_TX_ENDP,VCOM_TX_EPSIZE);
+    _SetEPTxValid(VCOM_TX_ENDP);
+
+    while(countTx != 0);
+    len     -= VCOM_TX_EPSIZE;
+    sendBuf += VCOM_TX_EPSIZE;
+  }
+
+  if (len != 0) {
+    countTx = len;
+    UserToPMABufferCopy(sendBuf,VCOM_TX_ADDR,len);
+    _SetEPTxCount(VCOM_TX_ENDP,len);
+    _SetEPTxValid(VCOM_TX_ENDP);
+  }
+  
+  return sent;
+}
+
+/* returns the number of available bytes are in the recv FIFO */
+uint8 usbBytesAvailable(void) {
+  return VCOM_RX_EPSIZE - maxNewBytes;
+}
+
+/* copies len bytes from the local recieve FIFO (not 
+   usb packet buffer) into recvBuf and deq's the fifo. 
+   will only copy the minimum of len or the available 
+   bytes. returns the number of bytes copied */
+uint8 usbReceiveBytes(uint8* recvBuf, uint8 len) {
+  if (len > VCOM_RX_EPSIZE - maxNewBytes) {
+    len = VCOM_RX_EPSIZE - maxNewBytes;
+  }
+  
+  int i;
+  for (i=0;i<len;i++) {
+    recvBuf[i] = (uint8)(vcomBufferRx[recvBufOut]);
+    recvBufOut = (recvBufOut + 1) % VCOM_RX_EPSIZE;
+  }
+
+  maxNewBytes += len;
+
+  /* re-enable the rx endpoint which we had set to receive 0 bytes */
+  if (maxNewBytes - len == 0) {
+    SetEPRxCount(VCOM_RX_ENDP,maxNewBytes);
+  }
+
+  return len;
+}
+
+void usbSendHello(void) {
+  char* myStr = "hello!";
+
+  uint8 bufin = 48 + recvBufIn;;
+  uint8 bufout = 48 + recvBufOut;
+  uint8 avail  = 48 + usbBytesAvailable();
+
+  char *line = "\r\n";
+  while(usbSendBytes(&bufin,1) == 0);
+  while(usbSendBytes(&bufout,1) == 0);
+  while(usbSendBytes(&avail,1) == 0);
+  while(usbSendBytes((uint8*)line,2) == 0);
+
+  uint8 recv[64];
+  usbReceiveBytes(&recv[0],1);
+}
diff --git a/libmaple/usb/usb.h b/libmaple/usb/usb.h
new file mode 100644
index 0000000..e76772e
--- /dev/null
+++ b/libmaple/usb/usb.h
@@ -0,0 +1,64 @@
+/* insert license */
+
+#ifndef __USB_H_
+#define __USB_H_
+
+
+#include "usb_lib.h"
+#include "libmaple.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum 
+  {
+    RESUME_EXTERNAL,
+    RESUME_INTERNAL,
+    RESUME_LATER,
+    RESUME_WAIT,
+    RESUME_START,
+    RESUME_ON,
+    RESUME_OFF,
+    RESUME_ESOF
+  } RESUME_STATE;
+
+typedef enum 
+  {
+    UNCONNECTED,
+    ATTACHED,
+    POWERED,
+    SUSPENDED,
+    ADDRESSED,
+    CONFIGURED
+  } DEVICE_STATE;
+
+  extern volatile uint32 bDeviceState;
+
+  void setupUSB(void);
+  void usbSuspend(void);
+  void usbResumeInit(void);
+  void usbResume(RESUME_STATE);
+  
+  RESULT usbPowerOn(void);
+  RESULT usbPowerOff(void);
+  
+  void usbDsbISR(void);
+  void usbEnbISR(void);
+
+  /* overloaded ISR routine, this is the main usb ISR */
+  void usb_lpIRQHandler(void);
+  void usbWaitReset(void);
+
+  /* blocking functions for send/receive */
+  int16 usbSendBytes(uint8* sendBuf,uint16 len);
+  uint8 usbBytesAvailable(void);
+  uint8 usbReceiveBytes(uint8* recvBuf, uint8 len);
+
+  void usbSendHello(void);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif //_USB_H
diff --git a/libmaple/usb/usb_callbacks.c b/libmaple/usb/usb_callbacks.c
new file mode 100644
index 0000000..08d62c5
--- /dev/null
+++ b/libmaple/usb/usb_callbacks.c
@@ -0,0 +1,293 @@
+/* insert license */
+
+#include "usb_callbacks.h"
+#include "usb_lib.h"
+#include "descriptors.h"
+#include "usb_config.h"
+#include "usb.h"
+
+ONE_DESCRIPTOR Device_Descriptor = {
+  (uint8*)&usbVcomDescriptor_Device,
+  sizeof(USB_Descriptor_Device)
+};
+
+ONE_DESCRIPTOR Config_Descriptor = {
+  (uint8*)&usbVcomDescriptor_Config,
+  0x43//sizeof(USB_Descriptor_Config)
+};
+
+ONE_DESCRIPTOR String_Descriptor[3] = {
+  {(uint8*)&usbVcomDescriptor_LangID,       USB_DESCRIPTOR_STRING_LEN(1)},
+  {(uint8*)&usbVcomDescriptor_iManufacturer,USB_DESCRIPTOR_STRING_LEN(8)},
+  {(uint8*)&usbVcomDescriptor_iProduct,     USB_DESCRIPTOR_STRING_LEN(8)}
+};
+
+uint8 last_request = 0;
+
+USB_Line_Coding line_coding = {
+ bitrate:     115200,
+ format:      0x00, /* stop bits-1 */
+ paritytype:  0x00,
+ datatype:    0x08
+};
+
+uint8 vcomBufferRx[VCOM_RX_EPSIZE];
+uint8 countTx    = 0;
+uint8 recvBufIn  = 0;
+uint8 recvBufOut = 0;
+uint8 maxNewBytes   = VCOM_RX_EPSIZE;
+
+RESET_STATE reset_state = START;
+
+void vcomDataTxCb(void) {
+  /* do whatever after data has been sent to host */
+
+  /* allows usbSendBytes to stop blocking */
+
+
+  countTx = 0;
+}
+
+/* we could get arbitrarily complicated here for speed purposes
+   however, the simple scheme here is to implement a receive fifo
+   and always set the maximum to new bytes to the space remaining
+   in the fifo. this number will be reincremented after calls
+   to usbReceiveBytes */
+void vcomDataRxCb(void) {
+  /* do whatever after data has been received from host */
+
+  /* setEPRxCount on the previous cycle should garuntee
+     we havnt received more bytes than we can fit */
+  uint8 newBytes = GetEPRxCount(VCOM_RX_ENDP);
+  /* assert (newBytes <= maxNewBytes); */
+
+  if (recvBufIn + newBytes < VCOM_RX_EPSIZE) {
+    PMAToUserBufferCopy(&vcomBufferRx[recvBufIn],VCOM_RX_ADDR,newBytes);
+    recvBufIn += newBytes;
+  } else {
+    /* we have to copy the data in two chunks because we roll over
+       the edge of the circular buffer */
+    uint8 tailBytes = VCOM_RX_EPSIZE - recvBufIn;
+    uint8 remaining = newBytes - tailBytes;
+
+    PMAToUserBufferCopy(&vcomBufferRx[recvBufIn],VCOM_RX_ADDR,tailBytes);
+    PMAToUserBufferCopy(&vcomBufferRx[0],        VCOM_RX_ADDR,remaining);
+
+    recvBufIn = (recvBufIn + newBytes ) % VCOM_RX_EPSIZE;
+  }
+  
+  maxNewBytes    -= newBytes;
+  SetEPRxCount(VCOM_RX_ENDP,maxNewBytes);
+  SetEPRxValid(VCOM_RX_ENDP);
+}
+
+void vcomManagementCb(void) {
+/* unused. This enpoint would callback if we had sent a linestate
+     changed notification */
+}
+
+u8* vcomGetSetLineCoding(uint16 length) {
+  if (length == 0) {
+    pInformation->Ctrl_Info.Usb_wLength = sizeof(USB_Line_Coding);
+  }
+  return (uint8*)&line_coding;
+}
+
+vcomSetLineState(void) {
+}
+
+void usbInit(void) {
+  pInformation->Current_Configuration = 0;
+  usbPowerOn();
+
+  _SetISTR(0);
+  wInterrupt_Mask = ISR_MSK;
+  _SetCNTR(wInterrupt_Mask);
+
+  usbEnbISR();
+  bDeviceState = UNCONNECTED;
+}
+
+void usbReset(void) {
+  pInformation->Current_Configuration = 0;
+
+  /* current feature is current bmAttributes */
+  pInformation->Current_Feature = (USB_CONFIG_ATTR_BUSPOWERED | USB_CONFIG_ATTR_SELF_POWERED);
+
+  _SetBTABLE(USB_BTABLE_ADDRESS);
+
+  /* setup control endpoint 0 */
+  _SetEPType(ENDP0, EP_CONTROL);
+  _SetEPTxStatus(ENDP0, EP_TX_STALL);
+  _SetEPRxAddr(ENDP0,VCOM_CTRL_RX_ADDR);
+  _SetEPTxAddr(ENDP0,VCOM_CTRL_TX_ADDR);
+  Clear_Status_Out(ENDP0);
+  
+  SetEPRxCount(ENDP0, pProperty->MaxPacketSize);
+  SetEPRxValid(ENDP0);
+
+  /* setup management endpoint 1  */
+  SetEPType     (VCOM_NOTIFICATION_ENDP,     EP_INTERRUPT);
+  SetEPTxAddr   (VCOM_NOTIFICATION_ENDP,     VCOM_NOTIFICATION_ADDR);
+  SetEPTxStatus (VCOM_NOTIFICATION_ENDP,     EP_TX_NAK);
+  SetEPRxStatus (VCOM_NOTIFICATION_ENDP,     EP_RX_DIS);
+
+  /* setup data endpoint OUT (rx) */
+/*   SetEPType     (VCOM_RX_ENDP, EP_BULK); */
+/*   SetEPRxAddr   (VCOM_RX_ENDP, VCOM_RX_ADDR); */
+/*   SetEPRxCount  (VCOM_RX_ENDP, VCOM_RX_EPSIZE); */
+/*   // SetEPTxStatus (VCOM_RX_ENDP, EP_TX_DIS); */
+/*   SetEPRxStatus (VCOM_RX_ENDP, EP_RX_VALID); */
+
+  SetEPType     (3, EP_BULK);
+  SetEPRxAddr   (3, 0x110);
+  SetEPRxCount  (3,64);
+  // SetEPTxStatus (VCOM_RX_ENDP, EP_TX_DIS);
+  SetEPRxStatus (3, EP_RX_VALID);
+
+  /* setup data endpoint IN (tx)  */
+  SetEPType     (VCOM_TX_ENDP, EP_BULK);
+  SetEPTxAddr   (VCOM_TX_ENDP, VCOM_TX_ADDR);
+  SetEPTxStatus (VCOM_TX_ENDP, EP_TX_NAK);
+  SetEPRxStatus (VCOM_TX_ENDP, EP_RX_DIS);
+
+  bDeviceState = ATTACHED;
+  SetDeviceAddress(0);
+
+  /* reset the rx fifo */
+  recvBufIn   = 0;
+  recvBufOut  = 0;
+  maxNewBytes = VCOM_RX_EPSIZE;
+  countTx     = 0;
+}
+
+
+void usbStatusIn(void) {
+  /* adjust the usart line coding
+     if we wish to couple the CDC line coding
+     with the real usart port */
+}
+
+void usbStatusOut(void) {
+}
+
+RESULT usbDataSetup(uint8 request) {
+  uint8 *(*CopyRoutine)(uint16);
+  CopyRoutine = NULL;
+
+  if (Type_Recipient == (CLASS_REQUEST | INTERFACE_RECIPIENT)) {
+    switch (request) {
+    case (GET_LINE_CODING): 
+      CopyRoutine = vcomGetSetLineCoding;
+      last_request = GET_LINE_CODING;
+      break;
+    case (SET_LINE_CODING): 
+      CopyRoutine = vcomGetSetLineCoding;
+      last_request = SET_LINE_CODING;
+      break;
+    default: break;
+    }
+  }
+
+  if (CopyRoutine == NULL) {
+    return USB_UNSUPPORT;
+  }
+
+  pInformation->Ctrl_Info.CopyData = CopyRoutine;
+  pInformation->Ctrl_Info.Usb_wOffset = 0;
+  (*CopyRoutine)(0);
+  return USB_SUCCESS;
+}
+
+RESULT usbNoDataSetup(u8 request) {
+  uint8 new_signal;
+
+  /* we support set com feature but dont handle it */
+  if (Type_Recipient == (CLASS_REQUEST | INTERFACE_RECIPIENT)) {
+
+    switch (request) {
+    case (SET_COMM_FEATURE):
+      return USB_SUCCESS;
+    case (SET_CONTROL_LINE_STATE):
+      /* to reset the board, pull both dtr and rts low
+	 then pulse dtr by itself */
+      new_signal = pInformation->USBwValues.bw.bb0 & (CONTROL_LINE_DTR | CONTROL_LINE_RTS);
+      switch (reset_state) {
+	/* no default, covered enum */
+        case START: 
+	  if (new_signal == 0) {
+	    reset_state = NDTR_NRTS;
+	  }
+	  break;
+
+        case NDTR_NRTS: 
+	  if (new_signal == CONTROL_LINE_DTR) {
+	    reset_state = DTR_NRTS;
+	  } else if (new_signal == 0) {
+	    reset_state = NDTR_NRTS;
+	  } else {
+	    reset_state = START;
+	  }
+	  break;
+
+        case DTR_NRTS: 
+	  if (new_signal == 0) {
+	    /* dont reset here, otherwise
+	       well likely crash the host! */
+	    reset_state = RESET_NOW;
+	  } else {
+	    reset_state = START;
+	  }
+	  break;
+      case RESET_NEXT:
+	reset_state = RESET_NOW;
+	break;
+      case RESET_NOW:
+      /* do nothing, wait for reset */
+	break;
+      }
+      return USB_SUCCESS;
+    }
+  }
+  return USB_UNSUPPORT;
+}
+
+RESULT usbGetInterfaceSetting(uint8 interface, uint8 alt_setting) {
+  if (alt_setting > 0) {
+    return USB_UNSUPPORT;
+  } else if (interface > 1) {
+    return USB_UNSUPPORT;
+  }
+
+  return USB_SUCCESS;
+}
+
+
+u8* usbGetDeviceDescriptor(u16 length) {
+  return Standard_GetDescriptorData(length, &Device_Descriptor);
+}
+
+u8* usbGetConfigDescriptor(u16 length) {
+  return Standard_GetDescriptorData(length, &Config_Descriptor);
+}
+
+u8* usbGetStringDescriptor(u16 length) {
+  uint8 wValue0 = pInformation->USBwValue0;
+
+  if (wValue0 > 2) {
+    return NULL;
+  }
+  return Standard_GetDescriptorData(length, &String_Descriptor[wValue0]);
+}
+
+/* internal callbacks to respond to standard requests */
+void usbSetConfiguration(void) {
+  if (pInformation->Current_Configuration != 0) {
+    bDeviceState = CONFIGURED;
+  }
+}
+
+void usbSetDeviceAddress(void) {
+  bDeviceState = ADDRESSED;
+}
+
diff --git a/libmaple/usb/usb_callbacks.h b/libmaple/usb/usb_callbacks.h
new file mode 100644
index 0000000..f8a2ef3
--- /dev/null
+++ b/libmaple/usb/usb_callbacks.h
@@ -0,0 +1,74 @@
+/* insert license */
+
+#ifndef __USB_CALLBACKS
+#define __USB_CALLBACKS
+
+#include "libmaple.h"
+#include "usb_lib.h"
+#include "usb_config.h"
+
+#define SET_LINE_CODING        0x20
+#define GET_LINE_CODING        0x21
+#define SET_COMM_FEATURE       0x02
+#define SET_CONTROL_LINE_STATE 0x22
+#define CONTROL_LINE_DTR       (0x01)
+#define CONTROL_LINE_RTS       (0x02)
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+typedef struct {
+  uint32 bitrate;
+  uint8  format;
+  uint8  paritytype;
+  uint8  datatype;
+} USB_Line_Coding;
+
+typedef enum {
+  START,
+  NDTR_NRTS,
+  DTR_NRTS,
+  RESET_NEXT,
+  RESET_NOW
+} RESET_STATE;
+
+extern RESET_STATE reset_state;  /* tracks DTR/RTS */
+extern uint8 countTx;
+extern uint8 vcomBufferRx[VCOM_RX_EPSIZE];  /* no reason this has to be VCOM_RX_EPSIZE, could be bigger */
+extern uint8 recvBufIn;   /* the FIFO in index to the recvbuffer */
+extern uint8 recvBufOut;  /* the FIFO out index to the recvbuffer */
+extern uint8 maxNewBytes;
+
+void vcomDataTxCb(void);
+void vcomDataRxCb(void);
+void vcomManagementCb(void);
+
+uint8* vcomGetSetLineCoding(uint16 length);
+void vcomSetLineSate(void);
+
+void usbInit(void);
+/* internal functions (as per the usb_core pProperty structure) */
+void usbInit(void);
+void usbReset(void);
+void usbStatusIn(void);
+void usbStatusOut(void);
+
+RESULT usbDataSetup(uint8 request);
+RESULT usbNoDataSetup(uint8 request);
+RESULT usbGetInterfaceSetting(uint8,uint8);
+
+uint8* usbGetDeviceDescriptor(uint16 length);
+uint8* usbGetConfigDescriptor(uint16 length);
+uint8* usbGetStringDescriptor(uint16 length);
+
+/* internal callbacks to respond to standard requests */
+void usbSetConfiguration(void);
+void usbSetDeviceAddress(void);
+
+#if defined(__cplusplus)
+}
+#endif
+
+
+#endif
diff --git a/libmaple/usb/usb_config.h b/libmaple/usb/usb_config.h
new file mode 100644
index 0000000..5cdbcd7
--- /dev/null
+++ b/libmaple/usb/usb_config.h
@@ -0,0 +1,53 @@
+/* insert license */
+
+#ifndef __USB_CONFIG_H
+#define __USB_CONFIG_H
+
+#include "usb_lib.h"
+
+#define VCOM_ID_VENDOR    0x0110
+#define VCOM_ID_PRODUCT   0x1003
+
+#define USB_CONFIG_MAX_POWER      (100 >> 1)
+
+/* choose addresses to give endpoints the max 64 byte buffers */
+#define USB_BTABLE_ADDRESS        0x00
+#define VCOM_CTRL_EPNUM           0x00
+#define VCOM_CTRL_RX_ADDR         0x40
+#define VCOM_CTRL_TX_ADDR         0x80
+#define VCOM_CTRL_EPSIZE          0x40
+
+#define VCOM_TX_ENDP              ENDP1
+#define VCOM_TX_EPNUM             0x01
+#define VCOM_TX_ADDR              0xC0
+#define VCOM_TX_EPSIZE            0x40
+
+#define VCOM_NOTIFICATION_ENDP    ENDP2
+#define VCOM_NOTIFICATION_EPNUM   0x02
+#define VCOM_NOTIFICATION_ADDR    0x100
+#define VCOM_NOTIFICATION_EPSIZE  0x40
+
+#define VCOM_RX_ENDP              ENDP3
+#define VCOM_RX_EPNUM             0x03
+#define VCOM_RX_ADDR              0x110
+#define VCOM_RX_EPSIZE            0x40
+
+#define bMaxPacketSize            0x40  /* 64B, maximum for USB FS Devices */
+
+#define NUM_ENDPTS                0x04
+
+/* handle all usb interrupts */
+#define ISR_MSK ( CNTR_CTRM    |           \
+		  CNTR_WKUPM   |	   \
+		  CNTR_SUSPM   |	   \
+		  CNTR_ERRM    |	   \
+		  CNTR_SOFM    |	   \
+		  CNTR_ESOFM   |	   \
+		  CNTR_RESETM  )
+
+#define USB_DISC_BANK GPIOC_BASE
+#define USB_DISC_PIN  12
+
+#define F_SUSPEND_ENABLED 1
+
+#endif
diff --git a/libmaple/usb/usb_hardware.c b/libmaple/usb/usb_hardware.c
new file mode 100644
index 0000000..2f37df6
--- /dev/null
+++ b/libmaple/usb/usb_hardware.c
@@ -0,0 +1,129 @@
+/* *****************************************************************************
+ * The MIT License
+ *
+ * Copyright (c) 2010 LeafLabs LLC.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ * ****************************************************************************/
+
+/**
+ *  @file hardware.c
+ *
+ *  @brief init routines to setup clocks and interrupts for usb.
+ *
+ */
+
+#include "usb_hardware.h"
+
+void setPin(u32 bank, u8 pin) {
+  u32 pinMask = 0x1 << (pin);
+  SET_REG(GPIO_BSRR(bank),pinMask);
+}
+
+void resetPin(u32 bank, u8 pin) {
+  u32 pinMask = 0x1 << (16+pin);
+  SET_REG(GPIO_BSRR(bank),pinMask);
+}
+
+void systemReset(void) {
+  SET_REG(RCC_CR, GET_REG(RCC_CR)     | 0x00000001);
+  SET_REG(RCC_CFGR, GET_REG(RCC_CFGR) & 0xF8FF0000);
+  SET_REG(RCC_CR, GET_REG(RCC_CR)     & 0xFEF6FFFF);
+  SET_REG(RCC_CR, GET_REG(RCC_CR)     & 0xFFFBFFFF);
+  SET_REG(RCC_CFGR, GET_REG(RCC_CFGR) & 0xFF80FFFF);
+
+  SET_REG(RCC_CIR, 0x00000000);  /* disable all RCC interrupts */
+}
+
+void setupCLK (void) {
+  /* enable HSE */
+  SET_REG(RCC_CR,GET_REG(RCC_CR) | 0x00010001);
+  while ((GET_REG(RCC_CR) & 0x00020000) == 0); /* for it to come on */
+  
+  /* Configure PLL */
+  SET_REG(RCC_CFGR,GET_REG(RCC_CFGR) | 0x001D0400);  /* pll=72Mhz,APB1=36Mhz,AHB=72Mhz */
+  SET_REG(RCC_CR,GET_REG(RCC_CR)     | 0x01000000);  /* enable the pll */
+  while ((GET_REG(RCC_CR) & 0x03000000) == 0);         /* wait for it to come on */
+  
+  /* Set SYSCLK as PLL */
+  SET_REG(RCC_CFGR,GET_REG(RCC_CFGR) | 0x00000002);
+  while ((GET_REG(RCC_CFGR) & 0x00000008) == 0); /* wait for it to come on */
+}
+
+
+void nvicInit(NVIC_InitTypeDef* NVIC_InitStruct) {
+  u32 tmppriority = 0x00;
+  u32 tmpreg      = 0x00;
+  u32 tmpmask     = 0x00;
+  u32 tmppre      = 0;
+  u32 tmpsub      = 0x0F;
+
+  SCB_TypeDef* rSCB = (SCB_TypeDef *) SCB_BASE;
+  NVIC_TypeDef* rNVIC = (NVIC_TypeDef *) NVIC_BASE;
+
+
+  /* Compute the Corresponding IRQ Priority --------------------------------*/    
+  tmppriority = (0x700 - (rSCB->AIRCR & (u32)0x700))>> 0x08;
+  tmppre = (0x4 - tmppriority);
+  tmpsub = tmpsub >> tmppriority;
+  
+  tmppriority = (u32)NVIC_InitStruct->NVIC_IRQChannelPreemptionPriority << tmppre;
+  tmppriority |=  NVIC_InitStruct->NVIC_IRQChannelSubPriority & tmpsub;
+
+  tmppriority = tmppriority << 0x04;
+  tmppriority = ((u32)tmppriority) << ((NVIC_InitStruct->NVIC_IRQChannel & (u8)0x03) * 0x08);
+    
+  tmpreg = rNVIC->IPR[(NVIC_InitStruct->NVIC_IRQChannel >> 0x02)];
+  tmpmask = (u32)0xFF << ((NVIC_InitStruct->NVIC_IRQChannel & (u8)0x03) * 0x08);
+  tmpreg &= ~tmpmask;
+  tmppriority &= tmpmask;  
+  tmpreg |= tmppriority;
+
+  rNVIC->IPR[(NVIC_InitStruct->NVIC_IRQChannel >> 0x02)] = tmpreg;
+    
+  /* Enable the Selected IRQ Channels --------------------------------------*/
+  rNVIC->ISER[(NVIC_InitStruct->NVIC_IRQChannel >> 0x05)] =
+    (u32)0x01 << (NVIC_InitStruct->NVIC_IRQChannel & (u8)0x1F);
+}
+
+void nvicDisableInterrupts() {
+  NVIC_TypeDef* rNVIC = (NVIC_TypeDef *) NVIC_BASE;
+  rNVIC->ICER[0] = 0xFFFFFFFF;
+  rNVIC->ICER[1] = 0xFFFFFFFF;
+  rNVIC->ICPR[0] = 0xFFFFFFFF;
+  rNVIC->ICPR[1] = 0xFFFFFFFF;
+
+  SET_REG(STK_CTRL,0x04); /* disable the systick, which operates separately from nvic */
+}
+
+void systemHardReset(void) {
+  SCB_TypeDef* rSCB = (SCB_TypeDef *) SCB_BASE;
+  typedef void (*funcPtr)(void);
+  
+  /* Reset  */
+  rSCB->AIRCR = (u32)AIRCR_RESET_REQ;
+
+  /*  should never get here */
+  while (1) {
+    asm volatile("nop");
+  }
+}
+
+
+
diff --git a/libmaple/usb/usb_hardware.h b/libmaple/usb/usb_hardware.h
new file mode 100644
index 0000000..208fa3a
--- /dev/null
+++ b/libmaple/usb/usb_hardware.h
@@ -0,0 +1,157 @@
+/* *****************************************************************************
+ * The MIT License
+ *
+ * Copyright (c) 2010 LeafLabs LLC.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ * ****************************************************************************/
+
+#ifndef __HARDWARE_H
+#define __HARDWARE_H
+
+#include "usb_type.h"
+
+/* macro'd register and peripheral definitions */
+#define EXC_RETURN 0xFFFFFFF9
+#define DEFAULT_CPSR 0x61000000
+#define STACK_TOP 0x20005000
+
+#define RCC   ((u32)0x40021000)
+#define FLASH ((u32)0x40022000)
+#define GPIOA ((u32)0x40010800)
+#define GPIOC ((u32)0x40011000)
+
+#define USB_PACKET_BUFFER ((u32)0x40006000)
+
+#define RCC_CR      RCC
+#define RCC_CFGR    RCC + 0x04
+#define RCC_CIR     RCC + 0x08
+#define RCC_AHBENR  RCC + 0x14
+#define RCC_APB2ENR RCC + 0x18
+#define RCC_APB1ENR RCC + 0x16
+
+#define GPIO_CRL(port)  port
+#define GPIO_CRH(port)  port+0x04
+#define GPIO_ODR(port)  port+0x0c
+#define GPIO_BSRR(port) port+0x10
+
+#define SCS_BASE   ((u32)0xE000E000)
+#define NVIC_BASE  (SCS_BASE + 0x0100)
+#define SCB_BASE   (SCS_BASE + 0x0D00)
+
+#define SCS      0xE000E000
+#define NVIC     (SCS+0x100)
+#define SCB      (SCS+0xD00)
+#define STK      (SCS+0x10)
+
+#define SCB_VTOR (SCB+0x08)
+#define STK_CTRL (STK+0x00)
+
+#define USB_HP_IRQ  ((u8)0x13)
+#define USB_LP_IRQ  ((u8)0x14)
+
+/* AIRCR  */
+#define AIRCR_RESET         0x05FA0000
+#define AIRCR_RESET_REQ     (AIRCR_RESET | (u32)0x04);
+
+/* temporary copyage of example from kiel */
+#define __VAL(__TIMCLK, __PERIOD) ((__TIMCLK/1000000UL)*__PERIOD)
+#define __PSC(__TIMCLK, __PERIOD)  (((__VAL(__TIMCLK, __PERIOD)+49999UL)/50000UL) - 1)
+#define __ARR(__TIMCLK, __PERIOD) ((__VAL(__TIMCLK, __PERIOD)/(__PSC(__TIMCLK, __PERIOD)+1)) - 1)
+
+/* todo, wrap in do whiles for the natural ; */
+#define SET_REG(addr,val) *(vu32*)(addr)=val
+#define GET_REG(addr)     *(vu32*)(addr)
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+/* todo: there must be some major misunderstanding in how we access regs. The direct access approach (GET_REG)
+   causes the usb init to fail upon trying to activate RCC_APB1 |= 0x00800000. However, using the struct approach
+   from ST, it works fine...temporarily switching to that approach */
+typedef struct 
+{
+  vu32 CR;
+  vu32 CFGR;
+  vu32 CIR;
+  vu32 APB2RSTR;
+  vu32 APB1RSTR;
+  vu32 AHBENR;
+  vu32 APB2ENR;
+  vu32 APB1ENR;
+  vu32 BDCR;
+  vu32 CSR;
+} RCC_RegStruct;
+#define pRCC ((RCC_RegStruct *) RCC)
+
+typedef struct {
+  vu32 ISER[2];
+  u32  RESERVED0[30];
+  vu32 ICER[2];
+  u32  RSERVED1[30];
+  vu32 ISPR[2];
+  u32  RESERVED2[30];
+  vu32 ICPR[2];
+  u32  RESERVED3[30];
+  vu32 IABR[2];
+  u32  RESERVED4[62];
+  vu32 IPR[15];
+} NVIC_TypeDef;
+
+typedef struct {
+  u8 NVIC_IRQChannel;
+  u8 NVIC_IRQChannelPreemptionPriority;
+  u8 NVIC_IRQChannelSubPriority;
+  USB_Bool NVIC_IRQChannelCmd; /* TRUE for enable */
+} NVIC_InitTypeDef;
+
+typedef struct {
+  vuc32 CPUID;
+  vu32 ICSR;
+  vu32 VTOR;
+  vu32 AIRCR;
+  vu32 SCR;
+  vu32 CCR;
+  vu32 SHPR[3];
+  vu32 SHCSR;
+  vu32 CFSR;
+  vu32 HFSR;
+  vu32 DFSR;
+  vu32 MMFAR;
+  vu32 BFAR;
+  vu32 AFSR;
+} SCB_TypeDef;
+
+
+void setPin    (u32 bank, u8 pin);
+void resetPin  (u32 bank, u8 pin);
+
+void systemHardReset(void);
+void systemReset   (void);
+void setupCLK      (void);
+
+void nvicInit        (NVIC_InitTypeDef*);
+void nvicDisableInterrupts(void);
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif
diff --git a/libmaple/usb/usb_lib/usb_core.c b/libmaple/usb/usb_lib/usb_core.c
new file mode 100644
index 0000000..223a2e1
--- /dev/null
+++ b/libmaple/usb/usb_lib/usb_core.c
@@ -0,0 +1,1016 @@
+/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************

+* File Name          : usb_core.c

+* Author             : MCD Application Team

+* Version            : V2.2.1

+* Date               : 09/22/2008

+* Description        : Standard protocol processing (USB v2.0)

+********************************************************************************

+* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS

+* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.

+* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,

+* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE

+* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING

+* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.

+*******************************************************************************/

+

+/* Includes ------------------------------------------------------------------*/

+#include "usb_lib.h"

+/* Private typedef -----------------------------------------------------------*/

+/* Private define ------------------------------------------------------------*/

+#define ValBit(VAR,Place)    (VAR & (1 << Place))

+#define SetBit(VAR,Place)    (VAR |= (1 << Place))

+#define ClrBit(VAR,Place)    (VAR &= ((1 << Place) ^ 255))

+

+#define Send0LengthData() { _SetEPTxCount(ENDP0, 0); \

+    vSetEPTxStatus(EP_TX_VALID); \

+  }

+

+#define vSetEPRxStatus(st) (SaveRState = st)

+#define vSetEPTxStatus(st) (SaveTState = st)

+

+#define USB_StatusIn() Send0LengthData()

+#define USB_StatusOut() vSetEPRxStatus(EP_RX_VALID)

+

+#define StatusInfo0 StatusInfo.bw.bb1 /* Reverse bb0 & bb1 */

+#define StatusInfo1 StatusInfo.bw.bb0

+

+/* Private macro -------------------------------------------------------------*/

+/* Private variables ---------------------------------------------------------*/

+u16_u8 StatusInfo;

+USB_Bool Data_Mul_MaxPacketSize = FALSE;

+/* Private function prototypes -----------------------------------------------*/

+static void DataStageOut(void);

+static void DataStageIn(void);

+static void NoData_Setup0(void);

+static void Data_Setup0(void);

+/* Private functions ---------------------------------------------------------*/

+

+/*******************************************************************************

+* Function Name  : Standard_GetConfiguration.

+* Description    : Return the current configuration variable address.

+* Input          : Length - How many bytes are needed.

+* Output         : None.

+* Return         : Return 1 , if the request is invalid when "Length" is 0.

+*                  Return "Buffer" if the "Length" is not 0.

+*******************************************************************************/

+u8 *Standard_GetConfiguration(u16 Length)

+{

+  if (Length == 0)

+  {

+    pInformation->Ctrl_Info.Usb_wLength =

+      sizeof(pInformation->Current_Configuration);

+    return 0;

+  }

+  pUser_Standard_Requests->User_GetConfiguration();

+  return (u8 *)&pInformation->Current_Configuration;

+}

+

+/*******************************************************************************

+* Function Name  : Standard_SetConfiguration.

+* Description    : This routine is called to set the configuration value

+*                  Then each class should configure device themself.

+* Input          : None.

+* Output         : None.

+* Return         : Return USB_SUCCESS, if the request is performed.

+*                  Return USB_UNSUPPORT, if the request is invalid.

+*******************************************************************************/

+RESULT Standard_SetConfiguration(void)

+{

+

+  if ((pInformation->USBwValue0 <=

+      Device_Table.Total_Configuration) && (pInformation->USBwValue1 == 0)

+      && (pInformation->USBwIndex == 0)) /*call Back usb spec 2.0*/

+  {

+    pInformation->Current_Configuration = pInformation->USBwValue0;

+    pUser_Standard_Requests->User_SetConfiguration();

+    return USB_SUCCESS;

+  }

+  else

+  {

+    return USB_UNSUPPORT;

+  }

+}

+

+/*******************************************************************************

+* Function Name  : Standard_GetInterface.

+* Description    : Return the Alternate Setting of the current interface.

+* Input          : Length - How many bytes are needed.

+* Output         : None.

+* Return         : Return 0, if the request is invalid when "Length" is 0.

+*                  Return "Buffer" if the "Length" is not 0.

+*******************************************************************************/

+u8 *Standard_GetInterface(u16 Length)

+{

+  if (Length == 0)

+  {

+    pInformation->Ctrl_Info.Usb_wLength =

+      sizeof(pInformation->Current_AlternateSetting);

+    return 0;

+  }

+  pUser_Standard_Requests->User_GetInterface();

+  return (u8 *)&pInformation->Current_AlternateSetting;

+}

+

+/*******************************************************************************

+* Function Name  : Standard_SetInterface.

+* Description    : This routine is called to set the interface.

+*                  Then each class should configure the interface them self.

+* Input          : None.

+* Output         : None.

+* Return         : - Return USB_SUCCESS, if the request is performed.

+*                  - Return USB_UNSUPPORT, if the request is invalid.

+*******************************************************************************/

+RESULT Standard_SetInterface(void)

+{

+  RESULT Re;

+  /*Test if the specified Interface and Alternate Setting are supported by

+    the application Firmware*/

+  Re = (*pProperty->Class_Get_Interface_Setting)(pInformation->USBwIndex0, pInformation->USBwValue0);

+

+  if (pInformation->Current_Configuration != 0)

+  {

+    if ((Re != USB_SUCCESS) || (pInformation->USBwIndex1 != 0)

+        || (pInformation->USBwValue1 != 0))

+    {

+      return  USB_UNSUPPORT;

+    }

+    else if (Re == USB_SUCCESS)

+    {

+      pUser_Standard_Requests->User_SetInterface();

+      pInformation->Current_Interface = pInformation->USBwIndex0;

+      pInformation->Current_AlternateSetting = pInformation->USBwValue0;

+      return USB_SUCCESS;

+    }

+

+  }

+

+  return USB_UNSUPPORT;

+}

+

+/*******************************************************************************

+* Function Name  : Standard_GetStatus.

+* Description    : Copy the device request data to "StatusInfo buffer".

+* Input          : - Length - How many bytes are needed.

+* Output         : None.

+* Return         : Return 0, if the request is at end of data block,

+*                  or is invalid when "Length" is 0.

+*******************************************************************************/

+u8 *Standard_GetStatus(u16 Length)

+{

+  if (Length == 0)

+  {

+    pInformation->Ctrl_Info.Usb_wLength = 2;

+    return 0;

+  }

+

+  StatusInfo.w = 0;

+  /* Reset Status Information */

+

+  if (Type_Recipient == (STANDARD_REQUEST | DEVICE_RECIPIENT))

+  {

+    /*Get Device Status */

+    u8 Feature = pInformation->Current_Feature;

+

+    /* Remote Wakeup enabled */

+    if (ValBit(Feature, 5))

+    {

+      SetBit(StatusInfo0, 1);

+    }

+

+    /* Bus-powered */

+    if (ValBit(Feature, 6))

+    {

+      ClrBit(StatusInfo0, 0);

+    }

+    else /* Self-powered */

+    {

+      SetBit(StatusInfo0, 0);

+    }

+  }

+  /*Interface Status*/

+  else if (Type_Recipient == (STANDARD_REQUEST | INTERFACE_RECIPIENT))

+  {

+    return (u8 *)&StatusInfo;

+  }

+  /*Get EndPoint Status*/

+  else if (Type_Recipient == (STANDARD_REQUEST | ENDPOINT_RECIPIENT))

+  {

+    u8 Related_Endpoint;

+    u8 wIndex0 = pInformation->USBwIndex0;

+

+    Related_Endpoint = (wIndex0 & 0x0f);

+    if (ValBit(wIndex0, 7))

+    {

+      /* IN endpoint */

+      if (_GetTxStallStatus(Related_Endpoint))

+      {

+        SetBit(StatusInfo0, 0); /* IN Endpoint stalled */

+      }

+    }

+    else

+    {

+      /* OUT endpoint */

+      if (_GetRxStallStatus(Related_Endpoint))

+      {

+        SetBit(StatusInfo0, 0); /* OUT Endpoint stalled */

+      }

+    }

+

+  }

+  else

+  {

+    return NULL;

+  }

+  pUser_Standard_Requests->User_GetStatus();

+  return (u8 *)&StatusInfo;

+}

+

+/*******************************************************************************

+* Function Name  : Standard_ClearFeature.

+* Description    : Clear or disable a specific feature.

+* Input          : None.

+* Output         : None.

+* Return         : - Return USB_SUCCESS, if the request is performed.

+*                  - Return USB_UNSUPPORT, if the request is invalid.

+*******************************************************************************/

+RESULT Standard_ClearFeature(void)

+{

+  u32     Type_Rec = Type_Recipient;

+  u32     Status;

+

+

+  if (Type_Rec == (STANDARD_REQUEST | DEVICE_RECIPIENT))

+  {/*Device Clear Feature*/

+    ClrBit(pInformation->Current_Feature, 5);

+    return USB_SUCCESS;

+  }

+  else if (Type_Rec == (STANDARD_REQUEST | ENDPOINT_RECIPIENT))

+  {/*EndPoint Clear Feature*/

+    DEVICE* pDev;

+    u32 Related_Endpoint;

+    u32 wIndex0;

+    u32 rEP;

+

+    if ((pInformation->USBwValue != ENDPOINT_STALL)

+        || (pInformation->USBwIndex1 != 0))

+    {

+      return USB_UNSUPPORT;

+    }

+

+    pDev = &Device_Table;

+    wIndex0 = pInformation->USBwIndex0;

+    rEP = wIndex0 & ~0x80;

+    Related_Endpoint = ENDP0 + rEP;

+

+    if (ValBit(pInformation->USBwIndex0, 7))

+    {

+      /*Get Status of endpoint & stall the request if the related_ENdpoint

+      is Disabled*/

+      Status = _GetEPTxStatus(Related_Endpoint);

+    }

+    else

+    {

+      Status = _GetEPRxStatus(Related_Endpoint);

+    }

+

+    if ((rEP >= pDev->Total_Endpoint) || (Status == 0)

+        || (pInformation->Current_Configuration == 0))

+    {

+      return USB_UNSUPPORT;

+    }

+

+

+    if (wIndex0 & 0x80)

+    {

+      /* IN endpoint */

+      if (_GetTxStallStatus(Related_Endpoint ))

+      {

+        ClearDTOG_TX(Related_Endpoint);

+        SetEPTxStatus(Related_Endpoint, EP_TX_VALID);

+      }

+    }

+    else

+    {

+      /* OUT endpoint */

+      if (_GetRxStallStatus(Related_Endpoint))

+      {

+        if (Related_Endpoint == ENDP0)

+        {

+          /* After clear the STALL, enable the default endpoint receiver */

+          SetEPRxCount(Related_Endpoint, Device_Property.MaxPacketSize);

+          _SetEPRxStatus(Related_Endpoint, EP_RX_VALID);

+        }

+        else

+        {

+          ClearDTOG_RX(Related_Endpoint);

+          _SetEPRxStatus(Related_Endpoint, EP_RX_VALID);

+        }

+      }

+    }

+    pUser_Standard_Requests->User_ClearFeature();

+    return USB_SUCCESS;

+  }

+

+  return USB_UNSUPPORT;

+}

+

+/*******************************************************************************

+* Function Name  : Standard_SetEndPointFeature

+* Description    : Set or enable a specific feature of EndPoint

+* Input          : None.

+* Output         : None.

+* Return         : - Return USB_SUCCESS, if the request is performed.

+*                  - Return USB_UNSUPPORT, if the request is invalid.

+*******************************************************************************/

+RESULT Standard_SetEndPointFeature(void)

+{

+  u32    wIndex0;

+  u32    Related_Endpoint;

+  u32    rEP;

+  u32   Status;

+

+  wIndex0 = pInformation->USBwIndex0;

+  rEP = wIndex0 & ~0x80;

+  Related_Endpoint = ENDP0 + rEP;

+

+  if (ValBit(pInformation->USBwIndex0, 7))

+  {

+    /* get Status of endpoint & stall the request if the related_ENdpoint

+    is Disabled*/

+    Status = _GetEPTxStatus(Related_Endpoint);

+  }

+  else

+  {

+    Status = _GetEPRxStatus(Related_Endpoint);

+  }

+

+  if (Related_Endpoint >= Device_Table.Total_Endpoint

+      || pInformation->USBwValue != 0 || Status == 0

+      || pInformation->Current_Configuration == 0)

+  {

+    return USB_UNSUPPORT;

+  }

+  else

+  {

+    if (wIndex0 & 0x80)

+    {

+      /* IN endpoint */

+      _SetEPTxStatus(Related_Endpoint, EP_TX_STALL);

+    }

+

+    else

+    {

+      /* OUT endpoint */

+      _SetEPRxStatus(Related_Endpoint, EP_RX_STALL);

+    }

+  }

+  pUser_Standard_Requests->User_SetEndPointFeature();

+  return USB_SUCCESS;

+}

+

+/*******************************************************************************

+* Function Name  : Standard_SetDeviceFeature.

+* Description    : Set or enable a specific feature of Device.

+* Input          : None.

+* Output         : None.

+* Return         : - Return USB_SUCCESS, if the request is performed.

+*                  - Return USB_UNSUPPORT, if the request is invalid.

+*******************************************************************************/

+RESULT Standard_SetDeviceFeature(void)

+{

+  SetBit(pInformation->Current_Feature, 5);

+  pUser_Standard_Requests->User_SetDeviceFeature();

+  return USB_SUCCESS;

+}

+

+/*******************************************************************************

+* Function Name  : Standard_GetDescriptorData.

+* Description    : Standard_GetDescriptorData is used for descriptors transfer.

+*                : This routine is used for the descriptors resident in Flash

+*                  or RAM

+*                  pDesc can be in either Flash or RAM

+*                  The purpose of this routine is to have a versatile way to

+*                  response descriptors request. It allows user to generate

+*                  certain descriptors with software or read descriptors from

+*                  external storage part by part.

+* Input          : - Length - Length of the data in this transfer.

+*                  - pDesc - A pointer points to descriptor struct.

+*                  The structure gives the initial address of the descriptor and

+*                  its original size.

+* Output         : None.

+* Return         : Address of a part of the descriptor pointed by the Usb_

+*                  wOffset The buffer pointed by this address contains at least

+*                  Length bytes.

+*******************************************************************************/

+u8 *Standard_GetDescriptorData(u16 Length, ONE_DESCRIPTOR *pDesc)

+{

+  u32  wOffset;

+

+  wOffset = pInformation->Ctrl_Info.Usb_wOffset;

+  if (Length == 0)

+  {

+    pInformation->Ctrl_Info.Usb_wLength = pDesc->Descriptor_Size - wOffset;

+    return 0;

+  }

+

+  return pDesc->Descriptor + wOffset;

+}

+

+/*******************************************************************************

+* Function Name  : DataStageOut.

+* Description    : Data stage of a Control Write Transfer.

+* Input          : None.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void DataStageOut(void)

+{

+  ENDPOINT_INFO *pEPinfo = &pInformation->Ctrl_Info;

+  u32 save_rLength;

+

+  save_rLength = pEPinfo->Usb_rLength;

+

+  if (pEPinfo->CopyData && save_rLength)

+  {

+    u8 *Buffer;

+    u32 Length;

+

+    Length = pEPinfo->PacketSize;

+    if (Length > save_rLength)

+    {

+      Length = save_rLength;

+    }

+

+    Buffer = (*pEPinfo->CopyData)(Length);

+    pEPinfo->Usb_rLength -= Length;

+    pEPinfo->Usb_rOffset += Length;

+

+    PMAToUserBufferCopy(Buffer, GetEPRxAddr(ENDP0), Length);

+  }

+

+  if (pEPinfo->Usb_rLength != 0)

+  {

+    vSetEPRxStatus(EP_RX_VALID);/* re-enable for next data reception */

+    SetEPTxCount(ENDP0, 0);

+    vSetEPTxStatus(EP_TX_VALID);/* Expect the host to abort the data OUT stage */

+  }

+  /* Set the next State*/

+  if (pEPinfo->Usb_rLength >= pEPinfo->PacketSize)

+  {

+    pInformation->ControlState = OUT_DATA;

+  }

+  else

+  {

+    if (pEPinfo->Usb_rLength > 0)

+    {

+      pInformation->ControlState = LAST_OUT_DATA;

+    }

+    else if (pEPinfo->Usb_rLength == 0)

+    {

+      pInformation->ControlState = WAIT_STATUS_IN;

+      USB_StatusIn();

+    }

+  }

+}

+

+/*******************************************************************************

+* Function Name  : DataStageIn.

+* Description    : Data stage of a Control Read Transfer.

+* Input          : None.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void DataStageIn(void)

+{

+  ENDPOINT_INFO *pEPinfo = &pInformation->Ctrl_Info;

+  u32 save_wLength = pEPinfo->Usb_wLength;

+  u32 ControlState = pInformation->ControlState;

+

+  u8 *DataBuffer;

+  u32 Length;

+

+  if ((save_wLength == 0) && (ControlState == LAST_IN_DATA))

+  {

+    if(Data_Mul_MaxPacketSize == TRUE)

+    {

+      /* No more data to send and empty packet */

+      Send0LengthData();

+      ControlState = LAST_IN_DATA;

+      Data_Mul_MaxPacketSize = FALSE;

+    }

+    else 

+    {

+      /* No more data to send so STALL the TX Status*/

+      ControlState = WAIT_STATUS_OUT;

+      vSetEPTxStatus(EP_TX_STALL);

+    }

+    

+    goto Expect_Status_Out;

+  }

+

+  Length = pEPinfo->PacketSize;

+  ControlState = (save_wLength <= Length) ? LAST_IN_DATA : IN_DATA;

+

+  if (Length > save_wLength)

+  {

+    Length = save_wLength;

+  }

+

+  DataBuffer = (*pEPinfo->CopyData)(Length);

+

+  UserToPMABufferCopy(DataBuffer, GetEPTxAddr(ENDP0), Length);

+

+  SetEPTxCount(ENDP0, Length);

+

+  pEPinfo->Usb_wLength -= Length;

+  pEPinfo->Usb_wOffset += Length;

+  vSetEPTxStatus(EP_TX_VALID);

+

+  USB_StatusOut();/* Expect the host to abort the data IN stage */

+

+Expect_Status_Out:

+  pInformation->ControlState = ControlState;

+}

+

+/*******************************************************************************

+* Function Name  : NoData_Setup0.

+* Description    : Proceed the processing of setup request without data stage.

+* Input          : None.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void NoData_Setup0(void)

+{

+  RESULT Result = USB_UNSUPPORT;

+  u32 RequestNo = pInformation->USBbRequest;

+  u32 ControlState;

+

+  if (Type_Recipient == (STANDARD_REQUEST | DEVICE_RECIPIENT))

+  {

+    /* Device Request*/

+    /* SET_CONFIGURATION*/

+    if (RequestNo == SET_CONFIGURATION)

+    {

+      Result = Standard_SetConfiguration();

+    }

+

+    /*SET ADDRESS*/

+    else if (RequestNo == SET_ADDRESS)

+    {

+      if ((pInformation->USBwValue0 > 127) || (pInformation->USBwValue1 != 0)

+          || (pInformation->USBwIndex != 0)

+          || (pInformation->Current_Configuration != 0))

+        /* Device Address should be 127 or less*/

+      {

+        ControlState = STALLED;

+        goto exit_NoData_Setup0;

+      }

+      else

+      {

+        Result = USB_SUCCESS;

+      }

+    }

+    /*SET FEATURE for Device*/

+    else if (RequestNo == SET_FEATURE)

+    {

+      if ((pInformation->USBwValue0 == DEVICE_REMOTE_WAKEUP)

+          && (pInformation->USBwIndex == 0)

+          && (ValBit(pInformation->Current_Feature, 5)))

+      {

+        Result = Standard_SetDeviceFeature();

+      }

+      else

+      {

+        Result = USB_UNSUPPORT;

+      }

+    }

+    /*Clear FEATURE for Device */

+    else if (RequestNo == CLEAR_FEATURE)

+    {

+      if (pInformation->USBwValue0 == DEVICE_REMOTE_WAKEUP

+          && pInformation->USBwIndex == 0

+          && ValBit(pInformation->Current_Feature, 5))

+      {

+        Result = Standard_ClearFeature();

+      }

+      else

+      {

+        Result = USB_UNSUPPORT;

+      }

+    }

+

+  }

+

+  /* Interface Request*/

+  else if (Type_Recipient == (STANDARD_REQUEST | INTERFACE_RECIPIENT))

+  {

+    /*SET INTERFACE*/

+    if (RequestNo == SET_INTERFACE)

+    {

+      Result = Standard_SetInterface();

+    }

+  }

+

+  /* EndPoint Request*/

+  else if (Type_Recipient == (STANDARD_REQUEST | ENDPOINT_RECIPIENT))

+  {

+    /*CLEAR FEATURE for EndPoint*/

+    if (RequestNo == CLEAR_FEATURE)

+    {

+      Result = Standard_ClearFeature();

+    }

+    /* SET FEATURE for EndPoint*/

+    else if (RequestNo == SET_FEATURE)

+    {

+      Result = Standard_SetEndPointFeature();

+    }

+  }

+  else

+  {

+    Result = USB_UNSUPPORT;

+  }

+

+

+  if (Result != USB_SUCCESS)

+  {

+    Result = (*pProperty->Class_NoData_Setup)(RequestNo);

+    if (Result == USB_NOT_READY)

+    {

+      ControlState = PAUSE;

+      goto exit_NoData_Setup0;

+    }

+  }

+

+  if (Result != USB_SUCCESS)

+  {

+    ControlState = STALLED;

+    goto exit_NoData_Setup0;

+  }

+

+  ControlState = WAIT_STATUS_IN;/* After no data stage SETUP */

+

+  USB_StatusIn();

+

+exit_NoData_Setup0:

+  pInformation->ControlState = ControlState;

+  return;

+}

+

+/*******************************************************************************

+* Function Name  : Data_Setup0.

+* Description    : Proceed the processing of setup request with data stage.

+* Input          : None.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void Data_Setup0(void)

+{

+  u8 *(*CopyRoutine)(u16);

+  RESULT Result;

+  u32 Request_No = pInformation->USBbRequest;

+

+  u32 Related_Endpoint, Reserved;

+  u32 wOffset, Status;

+

+

+

+  CopyRoutine = NULL;

+  wOffset = 0;

+

+  if (Request_No == GET_DESCRIPTOR)

+  {

+    if (Type_Recipient == (STANDARD_REQUEST | DEVICE_RECIPIENT))

+    {

+      u8 wValue1 = pInformation->USBwValue1;

+      if (wValue1 == DEVICE_DESCRIPTOR)

+      {

+        CopyRoutine = pProperty->GetDeviceDescriptor;

+      }

+      else if (wValue1 == CONFIG_DESCRIPTOR)

+      {

+        CopyRoutine = pProperty->GetConfigDescriptor;

+      }

+      else if (wValue1 == STRING_DESCRIPTOR)

+      {

+        CopyRoutine = pProperty->GetStringDescriptor;

+      } else if (wValue1 == 0x21) /* added to support functional descriptors */

+      {

+	CopyRoutine = pProperty->GetFunctionalDescriptor;

+      } /* End of GET_DESCRIPTOR */

+    }

+  }

+

+  /*GET STATUS*/

+  else if ((Request_No == GET_STATUS) && (pInformation->USBwValue == 0)

+           && (pInformation->USBwLength == 0x0002)

+           && (pInformation->USBwIndex1 == 0))

+  {

+    /* GET STATUS for Device*/

+    if ((Type_Recipient == (STANDARD_REQUEST | DEVICE_RECIPIENT))

+        && (pInformation->USBwIndex == 0))

+    {

+      CopyRoutine = Standard_GetStatus;

+    }

+

+    /* GET STATUS for Interface*/

+    else if (Type_Recipient == (STANDARD_REQUEST | INTERFACE_RECIPIENT))

+    {

+      if (((*pProperty->Class_Get_Interface_Setting)(pInformation->USBwIndex0, 0) == USB_SUCCESS)

+          && (pInformation->Current_Configuration != 0))

+      {

+        CopyRoutine = Standard_GetStatus;

+      }

+    }

+

+    /* GET STATUS for EndPoint*/

+    else if (Type_Recipient == (STANDARD_REQUEST | ENDPOINT_RECIPIENT))

+    {

+      Related_Endpoint = (pInformation->USBwIndex0 & 0x0f);

+      Reserved = pInformation->USBwIndex0 & 0x70;

+

+      if (ValBit(pInformation->USBwIndex0, 7))

+      {

+        /*Get Status of endpoint & stall the request if the related_ENdpoint

+        is Disabled*/

+        Status = _GetEPTxStatus(Related_Endpoint);

+      }

+      else

+      {

+        Status = _GetEPRxStatus(Related_Endpoint);

+      }

+

+      if ((Related_Endpoint < Device_Table.Total_Endpoint) && (Reserved == 0)

+          && (Status != 0))

+      {

+        CopyRoutine = Standard_GetStatus;

+      }

+    }

+

+  }

+

+  /*GET CONFIGURATION*/

+  else if (Request_No == GET_CONFIGURATION)

+  {

+    if (Type_Recipient == (STANDARD_REQUEST | DEVICE_RECIPIENT))

+    {

+      CopyRoutine = Standard_GetConfiguration;

+    }

+  }

+  /*GET INTERFACE*/

+  else if (Request_No == GET_INTERFACE)

+  {

+    if ((Type_Recipient == (STANDARD_REQUEST | INTERFACE_RECIPIENT))

+        && (pInformation->Current_Configuration != 0) && (pInformation->USBwValue == 0)

+        && (pInformation->USBwIndex1 == 0) && (pInformation->USBwLength == 0x0001)

+        && ((*pProperty->Class_Get_Interface_Setting)(pInformation->USBwIndex0, 0) == USB_SUCCESS))

+    {

+      CopyRoutine = Standard_GetInterface;

+    }

+

+  }

+  

+  if (CopyRoutine)

+  {

+    pInformation->Ctrl_Info.Usb_wOffset = wOffset;

+    pInformation->Ctrl_Info.CopyData = CopyRoutine;

+    /* sb in the original the cast to word was directly */

+    /* now the cast is made step by step */

+    (*CopyRoutine)(0);

+    Result = USB_SUCCESS;

+  }

+  else

+  {

+    Result = (*pProperty->Class_Data_Setup)(pInformation->USBbRequest);

+    if (Result == USB_NOT_READY)

+    {

+      pInformation->ControlState = PAUSE;

+      return;

+    }

+  }

+

+  if (pInformation->Ctrl_Info.Usb_wLength == 0xFFFF)

+  {

+    /* Data is not ready, wait it */

+    pInformation->ControlState = PAUSE;

+    return;

+  }

+  if ((Result == USB_UNSUPPORT) || (pInformation->Ctrl_Info.Usb_wLength == 0))

+  {

+    /* Unsupported request */

+    pInformation->ControlState = STALLED;

+    return;

+  }

+

+

+  if (ValBit(pInformation->USBbmRequestType, 7))

+  {

+    /* Device ==> Host */

+    vu32 wLength = pInformation->USBwLength;

+     

+    /* Restrict the data length to be the one host asks */

+    if (pInformation->Ctrl_Info.Usb_wLength > wLength)

+    {

+      pInformation->Ctrl_Info.Usb_wLength = wLength;

+    }

+    

+    else if (pInformation->Ctrl_Info.Usb_wLength < pInformation->USBwLength)

+    {

+      if (pInformation->Ctrl_Info.Usb_wLength < pProperty->MaxPacketSize)

+      {

+        Data_Mul_MaxPacketSize = FALSE;

+      }

+      else if ((pInformation->Ctrl_Info.Usb_wLength % pProperty->MaxPacketSize) == 0)

+      {

+        Data_Mul_MaxPacketSize = TRUE;

+      }

+    }   

+

+    pInformation->Ctrl_Info.PacketSize = pProperty->MaxPacketSize;

+    DataStageIn();

+  }

+  else

+  {

+    pInformation->ControlState = OUT_DATA;

+    vSetEPRxStatus(EP_RX_VALID); /* enable for next data reception */

+  }

+

+  return;

+}

+

+/*******************************************************************************

+* Function Name  : Setup0_Process

+* Description    : Get the device request data and dispatch to individual process.

+* Input          : None.

+* Output         : None.

+* Return         : Post0_Process.

+*******************************************************************************/

+u8 Setup0_Process(void)

+{

+

+  union

+  {

+    u8* b;

+    u16* w;

+  } pBuf;

+

+  pBuf.b = PMAAddr + (u8 *)(_GetEPRxAddr(ENDP0) * 2); /* *2 for 32 bits addr */

+

+  if (pInformation->ControlState != PAUSE)

+  {

+    pInformation->USBbmRequestType = *pBuf.b++; /* bmRequestType */

+    pInformation->USBbRequest = *pBuf.b++; /* bRequest */

+    pBuf.w++;  /* word not accessed because of 32 bits addressing */

+    pInformation->USBwValue = ByteSwap(*pBuf.w++); /* wValue */

+    pBuf.w++;  /* word not accessed because of 32 bits addressing */

+    pInformation->USBwIndex  = ByteSwap(*pBuf.w++); /* wIndex */

+    pBuf.w++;  /* word not accessed because of 32 bits addressing */

+    pInformation->USBwLength = *pBuf.w; /* wLength */

+  }

+

+  pInformation->ControlState = SETTING_UP;

+  if (pInformation->USBwLength == 0)

+  {

+    /* Setup with no data stage */

+    NoData_Setup0();

+  }

+  else

+  {

+    /* Setup with data stage */

+    Data_Setup0();

+  }

+  return Post0_Process();

+}

+

+/*******************************************************************************

+* Function Name  : In0_Process

+* Description    : Process the IN token on all default endpoint.

+* Input          : None.

+* Output         : None.

+* Return         : Post0_Process.

+*******************************************************************************/

+u8 In0_Process(void)

+{

+  u32 ControlState = pInformation->ControlState;

+

+  if ((ControlState == IN_DATA) || (ControlState == LAST_IN_DATA))

+  {

+    DataStageIn();

+    /* ControlState may be changed outside the function */

+    ControlState = pInformation->ControlState;

+  }

+

+  else if (ControlState == WAIT_STATUS_IN)

+  {

+    if ((pInformation->USBbRequest == SET_ADDRESS) &&

+        (Type_Recipient == (STANDARD_REQUEST | DEVICE_RECIPIENT)))

+    {

+      SetDeviceAddress(pInformation->USBwValue0);

+      pUser_Standard_Requests->User_SetDeviceAddress();

+    }

+    (*pProperty->Process_Status_IN)();

+    ControlState = STALLED;

+  }

+

+  else

+  {

+    ControlState = STALLED;

+  }

+

+  pInformation->ControlState = ControlState;

+

+  return Post0_Process();

+}

+

+/*******************************************************************************

+* Function Name  : Out0_Process

+* Description    : Process the OUT token on all default endpoint.

+* Input          : None.

+* Output         : None.

+* Return         : Post0_Process.

+*******************************************************************************/

+u8 Out0_Process(void)

+{

+  u32 ControlState = pInformation->ControlState;

+

+  if ((ControlState == OUT_DATA) || (ControlState == LAST_OUT_DATA))

+  {

+    DataStageOut();

+    ControlState = pInformation->ControlState; /* may be changed outside the function */

+  }

+

+  else if (ControlState == WAIT_STATUS_OUT)

+  {

+    (*pProperty->Process_Status_OUT)();

+    ControlState = STALLED;

+  }

+

+  else if ((ControlState == IN_DATA) || (ControlState == LAST_IN_DATA))

+  {

+    /* host aborts the transfer before finish */

+    ControlState = STALLED;

+  }

+

+  /* Unexpect state, STALL the endpoint */

+  else

+  {

+    ControlState = STALLED;

+  }

+

+  pInformation->ControlState = ControlState;

+

+  return Post0_Process();

+}

+

+/*******************************************************************************

+* Function Name  : Post0_Process

+* Description    : Stall the Endpoint 0 in case of error.

+* Input          : None.

+* Output         : None.

+* Return         : - 0 if the control State is in PAUSE

+*                  - 1 if not.

+*******************************************************************************/

+u8 Post0_Process(void)

+{

+  SetEPRxCount(ENDP0, Device_Property.MaxPacketSize);

+

+  if (pInformation->ControlState == STALLED)

+  {

+    vSetEPRxStatus(EP_RX_STALL);

+    vSetEPTxStatus(EP_TX_STALL);

+  }

+

+  return (pInformation->ControlState == PAUSE);

+}

+

+/*******************************************************************************

+* Function Name  : SetDeviceAddress.

+* Description    : Set the device and all the used Endpoints addresses.

+* Input          : - Val: device adress.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void SetDeviceAddress(u8 Val)

+{

+  u32 i;

+  u32 nEP = Device_Table.Total_Endpoint;

+

+  /* set address in every used endpoint */

+  for (i = 0; i < nEP; i++)

+  {

+    _SetEPAddress((u8)i, (u8)i);

+  } /* for */

+  _SetDADDR(Val | DADDR_EF); /* set device address and enable function */

+}

+

+/*******************************************************************************

+* Function Name  : NOP_Process

+* Description    : No operation function.

+* Input          : None.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void NOP_Process(void)

+{

+}

+

+/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/

diff --git a/libmaple/usb/usb_lib/usb_core.h b/libmaple/usb/usb_lib/usb_core.h
new file mode 100644
index 0000000..1931fbf
--- /dev/null
+++ b/libmaple/usb/usb_lib/usb_core.h
@@ -0,0 +1,252 @@
+/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************

+* File Name          : usb_core.h

+* Author             : MCD Application Team

+* Version            : V2.2.1

+* Date               : 09/22/2008

+* Description        : Standard protocol processing functions prototypes

+********************************************************************************

+* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS

+* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.

+* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,

+* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE

+* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING

+* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.

+*******************************************************************************/

+

+/* Define to prevent recursive inclusion -------------------------------------*/

+#ifndef __USB_CORE_H

+#define __USB_CORE_H

+

+#if defined(__cplusplus)

+extern "C" {

+#endif

+

+/* Includes ------------------------------------------------------------------*/

+/* Exported types ------------------------------------------------------------*/

+typedef enum _CONTROL_STATE

+{

+  WAIT_SETUP,       /* 0 */

+  SETTING_UP,       /* 1 */

+  IN_DATA,          /* 2 */

+  OUT_DATA,         /* 3 */

+  LAST_IN_DATA,     /* 4 */

+  LAST_OUT_DATA,    /* 5 */

+  WAIT_STATUS_IN,   /* 7 */

+  WAIT_STATUS_OUT,  /* 8 */

+  STALLED,          /* 9 */

+  PAUSE             /* 10 */

+} CONTROL_STATE;    /* The state machine states of a control pipe */

+

+typedef struct OneDescriptor

+{

+  u8 *Descriptor;

+  u16 Descriptor_Size;

+}

+ONE_DESCRIPTOR, *PONE_DESCRIPTOR;

+/* All the request process routines return a value of this type

+   If the return value is not SUCCESS or NOT_READY,

+   the software will STALL the correspond endpoint */

+typedef enum _RESULT

+{

+  USB_SUCCESS = 0,    /* Process sucessfully */

+  USB_ERROR,

+  USB_UNSUPPORT,

+  USB_NOT_READY       /* The process has not been finished, endpoint will be

+                         NAK to further rquest */

+} RESULT;

+

+

+/*-*-*-*-*-*-*-*-*-*-* Definitions for endpoint level -*-*-*-*-*-*-*-*-*-*-*-*/

+typedef struct _ENDPOINT_INFO

+{

+  /* When send data out of the device,

+   CopyData() is used to get data buffer 'Length' bytes data

+   if Length is 0,

+    CopyData() returns the total length of the data

+    if the request is not supported, returns 0

+    (NEW Feature )

+     if CopyData() returns -1, the calling routine should not proceed

+     further and will resume the SETUP process by the class device

+   if Length is not 0,

+    CopyData() returns a pointer to indicate the data location

+   Usb_wLength is the data remain to be sent,

+   Usb_wOffset is the Offset of original data

+  When receive data from the host,

+   CopyData() is used to get user data buffer which is capable

+   of Length bytes data to copy data from the endpoint buffer.

+   if Length is 0,

+    CopyData() returns the available data length,

+   if Length is not 0,

+    CopyData() returns user buffer address

+   Usb_rLength is the data remain to be received,

+   Usb_rPointer is the Offset of data buffer

+  */

+  u16  Usb_wLength;

+  u16  Usb_wOffset;

+  u16  PacketSize;

+  u8   *(*CopyData)(u16 Length);

+}ENDPOINT_INFO;

+

+/*-*-*-*-*-*-*-*-*-*-*-* Definitions for device level -*-*-*-*-*-*-*-*-*-*-*-*/

+

+typedef struct _DEVICE

+{

+  u8 Total_Endpoint;     /* Number of endpoints that are used */

+  u8 Total_Configuration;/* Number of configuration available */

+}

+DEVICE;

+

+typedef union

+{

+  u16 w;

+  struct BW

+  {

+    u8 bb1;

+    u8 bb0;

+  }

+  bw;

+} u16_u8;

+

+typedef struct _DEVICE_INFO

+{

+  u8 USBbmRequestType;       /* bmRequestType */

+  u8 USBbRequest;            /* bRequest */

+  u16_u8 USBwValues;         /* wValue */

+  u16_u8 USBwIndexs;         /* wIndex */

+  u16_u8 USBwLengths;        /* wLength */

+

+  u8 ControlState;           /* of type CONTROL_STATE */

+  u8 Current_Feature;

+  u8 Current_Configuration;   /* Selected configuration */

+  u8 Current_Interface;       /* Selected interface of current configuration */

+  u8 Current_AlternateSetting;/* Selected Alternate Setting of current

+                                     interface*/

+

+  ENDPOINT_INFO Ctrl_Info;

+}DEVICE_INFO;

+

+typedef struct _DEVICE_PROP

+{

+  void (*Init)(void);        /* Initialize the device */

+  void (*Reset)(void);       /* Reset routine of this device */

+

+  /* Device dependent process after the status stage */

+  void (*Process_Status_IN)(void);

+  void (*Process_Status_OUT)(void);

+

+  /* Procedure of process on setup stage of a class specified request with data stage */

+  /* All class specified requests with data stage are processed in Class_Data_Setup

+   Class_Data_Setup()

+    responses to check all special requests and fills ENDPOINT_INFO

+    according to the request

+    If IN tokens are expected, then wLength & wOffset will be filled

+    with the total transferring bytes and the starting position

+    If OUT tokens are expected, then rLength & rOffset will be filled

+    with the total expected bytes and the starting position in the buffer

+

+    If the request is valid, Class_Data_Setup returns SUCCESS, else UNSUPPORT

+

+   CAUTION:

+    Since GET_CONFIGURATION & GET_INTERFACE are highly related to

+    the individual classes, they will be checked and processed here.

+  */

+  RESULT (*Class_Data_Setup)(u8 RequestNo);

+

+  /* Procedure of process on setup stage of a class specified request without data stage */

+  /* All class specified requests without data stage are processed in Class_NoData_Setup

+   Class_NoData_Setup

+    responses to check all special requests and perform the request

+

+   CAUTION:

+    Since SET_CONFIGURATION & SET_INTERFACE are highly related to

+    the individual classes, they will be checked and processed here.

+  */

+  RESULT (*Class_NoData_Setup)(u8 RequestNo);

+

+  /*Class_Get_Interface_Setting

+   This function is used by the file usb_core.c to test if the selected Interface

+   and Alternate Setting (u8 Interface, u8 AlternateSetting) are supported by

+   the application.

+   This function is writing by user. It should return "SUCCESS" if the Interface

+   and Alternate Setting are supported by the application or "UNSUPPORT" if they

+   are not supported. */

+

+  RESULT  (*Class_Get_Interface_Setting)(u8 Interface, u8 AlternateSetting);

+

+  u8* (*GetDeviceDescriptor)(u16 Length);

+  u8* (*GetConfigDescriptor)(u16 Length);

+  u8* (*GetStringDescriptor)(u16 Length);

+  u8* (*GetFunctionalDescriptor)(u16 Length);

+

+  u8* RxEP_buffer;

+  u8 MaxPacketSize;

+

+}DEVICE_PROP;

+

+typedef struct _USER_STANDARD_REQUESTS

+{

+  void (*User_GetConfiguration)(void);       /* Get Configuration */

+  void (*User_SetConfiguration)(void);       /* Set Configuration */

+  void (*User_GetInterface)(void);           /* Get Interface */

+  void (*User_SetInterface)(void);           /* Set Interface */

+  void (*User_GetStatus)(void);              /* Get Status */

+  void (*User_ClearFeature)(void);           /* Clear Feature */

+  void (*User_SetEndPointFeature)(void);     /* Set Endpoint Feature */

+  void (*User_SetDeviceFeature)(void);       /* Set Device Feature */

+  void (*User_SetDeviceAddress)(void);       /* Set Device Address */

+}

+USER_STANDARD_REQUESTS;

+

+/* Exported constants --------------------------------------------------------*/

+#define Type_Recipient (pInformation->USBbmRequestType & (REQUEST_TYPE | RECIPIENT))

+

+#define Usb_rLength Usb_wLength

+#define Usb_rOffset Usb_wOffset

+

+#define USBwValue USBwValues.w

+#define USBwValue0 USBwValues.bw.bb0

+#define USBwValue1 USBwValues.bw.bb1

+#define USBwIndex USBwIndexs.w

+#define USBwIndex0 USBwIndexs.bw.bb0

+#define USBwIndex1 USBwIndexs.bw.bb1

+#define USBwLength USBwLengths.w

+#define USBwLength0 USBwLengths.bw.bb0

+#define USBwLength1 USBwLengths.bw.bb1

+

+/* Exported macro ------------------------------------------------------------*/

+/* Exported functions ------------------------------------------------------- */

+u8 Setup0_Process(void);

+u8 Post0_Process(void);

+u8 Out0_Process(void);

+u8 In0_Process(void);

+

+RESULT Standard_SetEndPointFeature(void);

+RESULT Standard_SetDeviceFeature(void);

+

+u8 *Standard_GetConfiguration(u16 Length);

+RESULT Standard_SetConfiguration(void);

+u8 *Standard_GetInterface(u16 Length);

+RESULT Standard_SetInterface(void);

+u8 *Standard_GetDescriptorData(u16 Length, PONE_DESCRIPTOR pDesc);

+

+u8 *Standard_GetStatus(u16 Length);

+RESULT Standard_ClearFeature(void);

+void SetDeviceAddress(u8);

+void NOP_Process(void);

+

+extern DEVICE_PROP Device_Property;

+extern  USER_STANDARD_REQUESTS User_Standard_Requests;

+extern  DEVICE  Device_Table;

+extern DEVICE_INFO Device_Info;

+

+/* cells saving status during interrupt servicing */

+extern u16 SaveRState;

+extern u16 SaveTState;

+

+#if defined(__cplusplus)

+}

+#endif

+

+#endif /* __USB_CORE_H */

+

+/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/

diff --git a/libmaple/usb/usb_lib/usb_def.h b/libmaple/usb/usb_lib/usb_def.h
new file mode 100644
index 0000000..aa6bcba
--- /dev/null
+++ b/libmaple/usb/usb_lib/usb_def.h
@@ -0,0 +1,88 @@
+/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************

+* File Name          : usb_def.h

+* Author             : MCD Application Team

+* Version            : V2.2.1

+* Date               : 09/22/2008

+* Description        : Definitions related to USB Core

+********************************************************************************

+* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS

+* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.

+* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,

+* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE

+* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING

+* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.

+*******************************************************************************/

+

+/* Define to prevent recursive inclusion -------------------------------------*/

+#ifndef __USB_DEF_H

+#define __USB_DEF_H

+

+#if defined(__cplusplus)

+extern "C" {

+#endif

+

+/* Includes ------------------------------------------------------------------*/

+/* Exported types ------------------------------------------------------------*/

+typedef enum _RECIPIENT_TYPE

+{

+  DEVICE_RECIPIENT,     /* Recipient device */

+  INTERFACE_RECIPIENT,  /* Recipient interface */

+  ENDPOINT_RECIPIENT,   /* Recipient endpoint */

+  OTHER_RECIPIENT

+} RECIPIENT_TYPE;

+

+

+typedef enum _STANDARD_REQUESTS

+{

+  GET_STATUS = 0,

+  CLEAR_FEATURE,

+  RESERVED1,

+  SET_FEATURE,

+  RESERVED2,

+  SET_ADDRESS,

+  GET_DESCRIPTOR,

+  SET_DESCRIPTOR,

+  GET_CONFIGURATION,

+  SET_CONFIGURATION,

+  GET_INTERFACE,

+  SET_INTERFACE,

+  TOTAL_sREQUEST,  /* Total number of Standard request */

+  SYNCH_FRAME = 12

+} STANDARD_REQUESTS;

+

+/* Definition of "USBwValue" */

+typedef enum _DESCRIPTOR_TYPE

+{

+  DEVICE_DESCRIPTOR = 1,

+  CONFIG_DESCRIPTOR,

+  STRING_DESCRIPTOR,

+  INTERFACE_DESCRIPTOR,

+  ENDPOINT_DESCRIPTOR

+} DESCRIPTOR_TYPE;

+

+/* Feature selector of a SET_FEATURE or CLEAR_FEATURE */

+typedef enum _FEATURE_SELECTOR

+{

+  ENDPOINT_STALL,

+  DEVICE_REMOTE_WAKEUP

+} FEATURE_SELECTOR;

+

+/* Exported constants --------------------------------------------------------*/

+/* Definition of "USBbmRequestType" */

+#define REQUEST_TYPE      0x60  /* Mask to get request type */

+#define STANDARD_REQUEST  0x00  /* Standard request */

+#define CLASS_REQUEST     0x20  /* Class request */

+#define VENDOR_REQUEST    0x40  /* Vendor request */

+

+#define RECIPIENT         0x1F  /* Mask to get recipient */

+

+/* Exported macro ------------------------------------------------------------*/

+/* Exported functions ------------------------------------------------------- */

+

+#if defined(__cplusplus)

+}

+#endif

+

+#endif /* __USB_DEF_H */

+

+/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/

diff --git a/libmaple/usb/usb_lib/usb_init.c b/libmaple/usb/usb_lib/usb_init.c
new file mode 100644
index 0000000..5862145
--- /dev/null
+++ b/libmaple/usb/usb_lib/usb_init.c
@@ -0,0 +1,64 @@
+/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************

+* File Name          : usb_init.c

+* Author             : MCD Application Team

+* Version            : V2.2.1

+* Date               : 09/22/2008

+* Description        : Initialization routines & global variables

+********************************************************************************

+* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS

+* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.

+* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,

+* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE

+* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING

+* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.

+*******************************************************************************/

+

+/* Includes ------------------------------------------------------------------*/

+#include "usb_lib.h"

+

+/* Private typedef -----------------------------------------------------------*/

+/* Private define ------------------------------------------------------------*/

+/* Private macro -------------------------------------------------------------*/

+/* Private variables ---------------------------------------------------------*/

+/*  The number of current endpoint, it will be used to specify an endpoint */

+ u8	EPindex;

+/*  The number of current device, it is an index to the Device_Table */

+/* u8	Device_no; */

+/*  Points to the DEVICE_INFO structure of current device */

+/*  The purpose of this register is to speed up the execution */

+DEVICE_INFO *pInformation;

+/*  Points to the DEVICE_PROP structure of current device */

+/*  The purpose of this register is to speed up the execution */

+DEVICE_PROP *pProperty;

+/*  Temporary save the state of Rx & Tx status. */

+/*  Whenever the Rx or Tx state is changed, its value is saved */

+/*  in this variable first and will be set to the EPRB or EPRA */

+/*  at the end of interrupt process */

+u16	SaveState ;

+u16  wInterrupt_Mask;

+DEVICE_INFO	Device_Info;

+USER_STANDARD_REQUESTS  *pUser_Standard_Requests;

+

+/* Extern variables ----------------------------------------------------------*/

+/* Private function prototypes -----------------------------------------------*/

+/* Private functions ---------------------------------------------------------*/

+

+/*******************************************************************************

+* Function Name  : USB_Init

+* Description    : USB system initialization

+* Input          : None.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void USB_Init(void)

+{

+  pInformation = &Device_Info;

+  pInformation->ControlState = 2;

+  pProperty = &Device_Property;

+  pUser_Standard_Requests = &User_Standard_Requests;

+  /* Initialize devices one by one */

+  

+  pProperty->Init();

+}

+

+/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/

diff --git a/libmaple/usb/usb_lib/usb_init.h b/libmaple/usb/usb_lib/usb_init.h
new file mode 100644
index 0000000..1091ce5
--- /dev/null
+++ b/libmaple/usb/usb_lib/usb_init.h
@@ -0,0 +1,57 @@
+/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************

+* File Name          : usb_init.h

+* Author             : MCD Application Team

+* Version            : V2.2.1

+* Date               : 09/22/2008

+* Description        : Initialization routines & global variables

+********************************************************************************

+* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS

+* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.

+* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,

+* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE

+* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING

+* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.

+*******************************************************************************/

+

+/* Define to prevent recursive inclusion -------------------------------------*/

+#ifndef __USB_INIT_H

+#define __USB_INIT_H

+

+#if defined(__cplusplus)

+extern "C" {

+#endif

+

+/* Includes ------------------------------------------------------------------*/

+/* Exported types ------------------------------------------------------------*/

+/* Exported constants --------------------------------------------------------*/

+/* Exported macro ------------------------------------------------------------*/

+/* Exported functions ------------------------------------------------------- */

+void USB_Init(void);

+

+/* External variables --------------------------------------------------------*/

+/*  The number of current endpoint, it will be used to specify an endpoint */

+extern u8	EPindex;

+/*  The number of current device, it is an index to the Device_Table */

+/*extern u8	Device_no; */

+/*  Points to the DEVICE_INFO structure of current device */

+/*  The purpose of this register is to speed up the execution */

+extern DEVICE_INFO*	pInformation;

+/*  Points to the DEVICE_PROP structure of current device */

+/*  The purpose of this register is to speed up the execution */

+extern DEVICE_PROP*	pProperty;

+/*  Temporary save the state of Rx & Tx status. */

+/*  Whenever the Rx or Tx state is changed, its value is saved */

+/*  in this variable first and will be set to the EPRB or EPRA */

+/*  at the end of interrupt process */

+extern USER_STANDARD_REQUESTS *pUser_Standard_Requests;

+

+extern u16	SaveState ;

+extern u16 wInterrupt_Mask;

+

+#if defined(__cplusplus)

+}

+#endif

+

+#endif /* __USB_INIT_H */

+

+/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/

diff --git a/libmaple/usb/usb_lib/usb_int.c b/libmaple/usb/usb_lib/usb_int.c
new file mode 100644
index 0000000..f1d82be
--- /dev/null
+++ b/libmaple/usb/usb_lib/usb_int.c
@@ -0,0 +1,192 @@
+/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************

+* File Name          : usb_int.c

+* Author             : MCD Application Team

+* Version            : V2.2.1

+* Date               : 09/22/2008

+* Description        : Endpoint CTR (Low and High) interrupt's service routines

+********************************************************************************

+* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS

+* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.

+* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,

+* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE

+* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING

+* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.

+*******************************************************************************/

+

+/* Includes ------------------------------------------------------------------*/

+#include "usb_lib.h"

+

+/* Private typedef -----------------------------------------------------------*/

+/* Private define ------------------------------------------------------------*/

+/* Private macro -------------------------------------------------------------*/

+/* Private variables ---------------------------------------------------------*/

+u16 SaveRState;

+u16 SaveTState;

+

+/* Extern variables ----------------------------------------------------------*/

+extern void (*pEpInt_IN[7])(void);    /*  Handles IN  interrupts   */

+extern void (*pEpInt_OUT[7])(void);   /*  Handles OUT interrupts   */

+

+/* Private function prototypes -----------------------------------------------*/

+/* Private functions ---------------------------------------------------------*/

+

+/*******************************************************************************

+* Function Name  : CTR_LP.

+* Description    : Low priority Endpoint Correct Transfer interrupt's service

+*                  routine.

+* Input          : None.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void CTR_LP(void)

+{

+  u32 wEPVal = 0;

+  /* stay in loop while pending ints */

+  while (((wIstr = _GetISTR()) & ISTR_CTR) != 0)

+  {

+    _SetISTR((u16)CLR_CTR); /* clear CTR flag */

+    /* extract highest priority endpoint number */

+    EPindex = (u8)(wIstr & ISTR_EP_ID);

+    if (EPindex == 0)

+    {

+      /* Decode and service control endpoint interrupt */

+      /* calling related service routine */

+      /* (Setup0_Process, In0_Process, Out0_Process) */

+

+      /* save RX & TX status */

+      /* and set both to NAK */

+      SaveRState = _GetEPRxStatus(ENDP0);

+      SaveTState = _GetEPTxStatus(ENDP0);

+      _SetEPRxStatus(ENDP0, EP_RX_NAK);

+      _SetEPTxStatus(ENDP0, EP_TX_NAK);

+

+

+      /* DIR bit = origin of the interrupt */

+

+      if ((wIstr & ISTR_DIR) == 0)

+      {

+        /* DIR = 0 */

+

+        /* DIR = 0      => IN  int */

+        /* DIR = 0 implies that (EP_CTR_TX = 1) always  */

+

+

+        _ClearEP_CTR_TX(ENDP0);

+        In0_Process();

+

+           /* before terminate set Tx & Rx status */

+          _SetEPRxStatus(ENDP0, SaveRState);

+          _SetEPTxStatus(ENDP0, SaveTState);

+          return;

+      }

+      else

+      {

+        /* DIR = 1 */

+

+        /* DIR = 1 & CTR_RX       => SETUP or OUT int */

+        /* DIR = 1 & (CTR_TX | CTR_RX) => 2 int pending */

+

+        wEPVal = _GetENDPOINT(ENDP0);

+        if ((wEPVal & EP_CTR_TX) != 0)

+        {

+          _ClearEP_CTR_TX(ENDP0);

+          In0_Process();

+          /* before terminate set Tx & Rx status */

+          _SetEPRxStatus(ENDP0, SaveRState);

+          _SetEPTxStatus(ENDP0, SaveTState);

+          return;

+        }

+        else if ((wEPVal &EP_SETUP) != 0)

+        {

+          _ClearEP_CTR_RX(ENDP0); /* SETUP bit kept frozen while CTR_RX = 1 */

+          Setup0_Process();

+          /* before terminate set Tx & Rx status */

+          _SetEPRxStatus(ENDP0, SaveRState);

+          _SetEPTxStatus(ENDP0, SaveTState);

+          return;

+        }

+

+        else if ((wEPVal & EP_CTR_RX) != 0)

+        {

+          _ClearEP_CTR_RX(ENDP0);

+          Out0_Process();

+          /* before terminate set Tx & Rx status */

+          _SetEPRxStatus(ENDP0, SaveRState);

+          _SetEPTxStatus(ENDP0, SaveTState);

+          return;

+        }

+      }

+    }/* if(EPindex == 0) */

+    else

+    {

+      /* Decode and service non control endpoints interrupt  */

+

+      /* process related endpoint register */

+      wEPVal = _GetENDPOINT(EPindex);

+      if ((wEPVal & EP_CTR_RX) != 0)

+      {

+        /* clear int flag */

+        _ClearEP_CTR_RX(EPindex);

+

+        /* call OUT service function */

+        (*pEpInt_OUT[EPindex-1])();

+

+      } /* if((wEPVal & EP_CTR_RX) */

+

+      if ((wEPVal & EP_CTR_TX) != 0)

+      {

+        /* clear int flag */

+        _ClearEP_CTR_TX(EPindex);

+

+        /* call IN service function */

+        (*pEpInt_IN[EPindex-1])();

+      } /* if((wEPVal & EP_CTR_TX) != 0) */

+

+    }/* if(EPindex == 0) else */

+

+  }/* while(...) */

+}

+

+/*******************************************************************************

+* Function Name  : CTR_HP.

+* Description    : High Priority Endpoint Correct Transfer interrupt's service 

+*                  routine.

+* Input          : None.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void CTR_HP(void)

+{

+  u32 wEPVal = 0;

+

+  while (((wIstr = _GetISTR()) & ISTR_CTR) != 0)

+  {

+    _SetISTR((u16)CLR_CTR); /* clear CTR flag */

+    /* extract highest priority endpoint number */

+    EPindex = (u8)(wIstr & ISTR_EP_ID);

+    /* process related endpoint register */

+    wEPVal = _GetENDPOINT(EPindex);

+    if ((wEPVal & EP_CTR_RX) != 0)

+    {

+      /* clear int flag */

+      _ClearEP_CTR_RX(EPindex);

+

+      /* call OUT service function */

+      (*pEpInt_OUT[EPindex-1])();

+

+    } /* if((wEPVal & EP_CTR_RX) */

+    else if ((wEPVal & EP_CTR_TX) != 0)

+    {

+      /* clear int flag */

+      _ClearEP_CTR_TX(EPindex);

+

+      /* call IN service function */

+      (*pEpInt_IN[EPindex-1])();

+

+

+    } /* if((wEPVal & EP_CTR_TX) != 0) */

+

+  }/* while(...) */

+}

+

+/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/

diff --git a/libmaple/usb/usb_lib/usb_int.h b/libmaple/usb/usb_lib/usb_int.h
new file mode 100644
index 0000000..10a33fb
--- /dev/null
+++ b/libmaple/usb/usb_lib/usb_int.h
@@ -0,0 +1,41 @@
+/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************

+* File Name          : usb_int.h

+* Author             : MCD Application Team

+* Version            : V2.2.1

+* Date               : 09/22/2008

+* Description        : Endpoint CTR (Low and High) interrupt's service routines

+*                      prototypes

+********************************************************************************

+* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS

+* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.

+* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,

+* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE

+* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING

+* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.

+*******************************************************************************/

+

+/* Define to prevent recursive inclusion -------------------------------------*/

+#ifndef __USB_INT_H

+#define __USB_INT_H

+

+/* Includes ------------------------------------------------------------------*/

+/* Exported types ------------------------------------------------------------*/

+/* Exported constants --------------------------------------------------------*/

+/* Exported macro ------------------------------------------------------------*/

+/* Exported functions ------------------------------------------------------- */

+#if defined(__cplusplus)

+extern "C" {

+#endif

+

+void CTR_LP(void);

+void CTR_HP(void);

+

+/* External variables --------------------------------------------------------*/

+

+#if defined(__cplusplus)

+}

+#endif

+

+#endif /* __USB_INT_H */

+

+/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/

diff --git a/libmaple/usb/usb_lib/usb_lib.h b/libmaple/usb/usb_lib/usb_lib.h
new file mode 100644
index 0000000..5d14b5a
--- /dev/null
+++ b/libmaple/usb/usb_lib/usb_lib.h
@@ -0,0 +1,37 @@
+/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************

+* File Name          : usb_lib.h

+* Author             : MCD Application Team

+* Version            : V2.2.1

+* Date               : 09/22/2008

+* Description        : USB library include files

+********************************************************************************

+* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS

+* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.

+* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,

+* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE

+* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING

+* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.

+*******************************************************************************/

+

+/* Define to prevent recursive inclusion -------------------------------------*/

+#ifndef __USB_LIB_H

+#define __USB_LIB_H

+

+/* Includes ------------------------------------------------------------------*/

+#include "usb_type.h"

+#include "usb_regs.h"

+#include "usb_def.h"

+#include "usb_core.h"

+#include "usb_init.h"

+#include "usb_mem.h"

+#include "usb_int.h"

+

+/* Exported types ------------------------------------------------------------*/

+/* Exported constants --------------------------------------------------------*/

+/* Exported macro ------------------------------------------------------------*/

+/* Exported functions ------------------------------------------------------- */

+/* External variables --------------------------------------------------------*/

+

+#endif /* __USB_LIB_H */

+

+/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/

diff --git a/libmaple/usb/usb_lib/usb_mem.c b/libmaple/usb/usb_lib/usb_mem.c
new file mode 100644
index 0000000..ee698c5
--- /dev/null
+++ b/libmaple/usb/usb_lib/usb_mem.c
@@ -0,0 +1,73 @@
+/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************

+* File Name          : usb_mem.c

+* Author             : MCD Application Team

+* Version            : V2.2.1

+* Date               : 09/22/2008

+* Description        : Utility functions for memory transfers to/from PMA

+********************************************************************************

+* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS

+* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.

+* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,

+* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE

+* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING

+* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.

+*******************************************************************************/

+

+/* Includes ------------------------------------------------------------------*/

+#include "usb_lib.h"

+

+/* Private typedef -----------------------------------------------------------*/

+/* Private define ------------------------------------------------------------*/

+/* Private macro -------------------------------------------------------------*/

+/* Private variables ---------------------------------------------------------*/

+/* Extern variables ----------------------------------------------------------*/

+/* Private function prototypes -----------------------------------------------*/

+/* Private functions ---------------------------------------------------------*/

+/*******************************************************************************

+* Function Name  : UserToPMABufferCopy

+* Description    : Copy a buffer from user memory area to packet memory area (PMA)

+* Input          : - pbUsrBuf: pointer to user memory area.

+*                  - wPMABufAddr: address into PMA.

+*                  - wNBytes: no. of bytes to be copied.

+* Output         : None.

+* Return         : None	.

+*******************************************************************************/

+void UserToPMABufferCopy(u8 *pbUsrBuf, u16 wPMABufAddr, u16 wNBytes)

+{

+  u32 n = (wNBytes + 1) >> 1;   /* n = (wNBytes + 1) / 2 */

+  u32 i, temp1, temp2;

+  u16 *pdwVal;

+  pdwVal = (u16 *)(wPMABufAddr * 2 + PMAAddr);

+  for (i = n; i != 0; i--)

+  {

+    temp1 = (u16) * pbUsrBuf;

+    pbUsrBuf++;

+    temp2 = temp1 | (u16) * pbUsrBuf << 8;

+    *pdwVal++ = temp2;

+    pdwVal++;

+    pbUsrBuf++;

+  }

+}

+/*******************************************************************************

+* Function Name  : PMAToUserBufferCopy

+* Description    : Copy a buffer from user memory area to packet memory area (PMA)

+* Input          : - pbUsrBuf    = pointer to user memory area.

+*                  - wPMABufAddr = address into PMA.

+*                  - wNBytes     = no. of bytes to be copied.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void PMAToUserBufferCopy(u8 *pbUsrBuf, u16 wPMABufAddr, u16 wNBytes)

+{

+  u32 n = (wNBytes + 1) >> 1;/* /2*/

+  u32 i;

+  u32 *pdwVal;

+  pdwVal = (u32 *)(wPMABufAddr * 2 + PMAAddr);

+  for (i = n; i != 0; i--)

+  {

+    *(u16*)pbUsrBuf++ = *pdwVal++;

+    pbUsrBuf++;

+  }

+}

+

+/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/

diff --git a/libmaple/usb/usb_lib/usb_mem.h b/libmaple/usb/usb_lib/usb_mem.h
new file mode 100644
index 0000000..a3d7927
--- /dev/null
+++ b/libmaple/usb/usb_lib/usb_mem.h
@@ -0,0 +1,40 @@
+/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************

+* File Name          : usb_mem.h

+* Author             : MCD Application Team

+* Version            : V2.2.1

+* Date               : 09/22/2008

+* Description        : Utility prototypes functions for memory/PMA transfers

+********************************************************************************

+* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS

+* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.

+* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,

+* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE

+* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING

+* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.

+*******************************************************************************/

+

+/* Define to prevent recursive inclusion -------------------------------------*/

+#ifndef __USB_MEM_H

+#define __USB_MEM_H

+

+/* Includes ------------------------------------------------------------------*/

+/* Exported types ------------------------------------------------------------*/

+/* Exported constants --------------------------------------------------------*/

+/* Exported macro ------------------------------------------------------------*/

+/* Exported functions ------------------------------------------------------- */

+#if defined(__cplusplus)

+extern "C" {

+#endif

+

+void UserToPMABufferCopy(u8 *pbUsrBuf, u16 wPMABufAddr, u16 wNBytes);

+void PMAToUserBufferCopy(u8 *pbUsrBuf, u16 wPMABufAddr, u16 wNBytes);

+

+#if defined(__cplusplus)

+}

+#endif

+

+/* External variables --------------------------------------------------------*/

+

+#endif  /*__USB_MEM_H*/

+

+/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/

diff --git a/libmaple/usb/usb_lib/usb_regs.c b/libmaple/usb/usb_lib/usb_regs.c
new file mode 100644
index 0000000..c28ef5a
--- /dev/null
+++ b/libmaple/usb/usb_lib/usb_regs.c
@@ -0,0 +1,748 @@
+/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************

+* File Name          : usb_regs.c

+* Author             : MCD Application Team

+* Version            : V2.2.1

+* Date               : 09/22/2008

+* Description        : Interface functions to USB cell registers

+********************************************************************************

+* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS

+* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.

+* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,

+* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE

+* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING

+* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.

+*******************************************************************************/

+

+/* Includes ------------------------------------------------------------------*/

+#include "usb_lib.h"

+

+/* Private typedef -----------------------------------------------------------*/

+/* Private define ------------------------------------------------------------*/

+/* Private macro -------------------------------------------------------------*/

+/* Private variables ---------------------------------------------------------*/

+/* Extern variables ----------------------------------------------------------*/

+/* Private function prototypes -----------------------------------------------*/

+/* Private functions ---------------------------------------------------------*/

+

+/*******************************************************************************

+* Function Name  : SetCNTR.

+* Description    : Set the CNTR register value.

+* Input          : wRegValue: new register value.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void SetCNTR(u16 wRegValue)

+{

+  _SetCNTR(wRegValue);

+}

+

+/*******************************************************************************

+* Function Name  : GetCNTR.

+* Description    : returns the CNTR register value.

+* Input          : None.

+* Output         : None.

+* Return         : CNTR register Value.

+*******************************************************************************/

+u16 GetCNTR(void)

+{

+  return(_GetCNTR());

+}

+

+/*******************************************************************************

+* Function Name  : SetISTR.

+* Description    : Set the ISTR register value.

+* Input          : wRegValue: new register value.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void SetISTR(u16 wRegValue)

+{

+  _SetISTR(wRegValue);

+}

+

+/*******************************************************************************

+* Function Name  : GetISTR

+* Description    : Returns the ISTR register value.

+* Input          : None.

+* Output         : None.

+* Return         : ISTR register Value

+*******************************************************************************/

+u16 GetISTR(void)

+{

+  return(_GetISTR());

+}

+

+/*******************************************************************************

+* Function Name  : GetFNR

+* Description    : Returns the FNR register value.

+* Input          : None.

+* Output         : None.

+* Return         : FNR register Value

+*******************************************************************************/

+u16 GetFNR(void)

+{

+  return(_GetFNR());

+}

+

+/*******************************************************************************

+* Function Name  : SetDADDR

+* Description    : Set the DADDR register value.

+* Input          : wRegValue: new register value.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void SetDADDR(u16 wRegValue)

+{

+  _SetDADDR(wRegValue);

+}

+

+/*******************************************************************************

+* Function Name  : GetDADDR

+* Description    : Returns the DADDR register value.

+* Input          : None.

+* Output         : None.

+* Return         : DADDR register Value

+*******************************************************************************/

+u16 GetDADDR(void)

+{

+  return(_GetDADDR());

+}

+

+/*******************************************************************************

+* Function Name  : SetBTABLE

+* Description    : Set the BTABLE.

+* Input          : wRegValue: New register value.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void SetBTABLE(u16 wRegValue)

+{

+  _SetBTABLE(wRegValue);

+}

+

+/*******************************************************************************

+* Function Name  : GetBTABLE.

+* Description    : Returns the BTABLE register value.

+* Input          : None. 

+* Output         : None.

+* Return         : BTABLE address.

+*******************************************************************************/

+u16 GetBTABLE(void)

+{

+  return(_GetBTABLE());

+}

+

+/*******************************************************************************

+* Function Name  : SetENDPOINT

+* Description    : Setthe Endpoint register value.

+* Input          : bEpNum: Endpoint Number. 

+*                  wRegValue.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void SetENDPOINT(u8 bEpNum, u16 wRegValue)

+{

+  _SetENDPOINT(bEpNum, wRegValue);

+}

+

+/*******************************************************************************

+* Function Name  : GetENDPOINT

+* Description    : Return the Endpoint register value.

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : Endpoint register value.

+*******************************************************************************/

+u16 GetENDPOINT(u8 bEpNum)

+{

+  return(_GetENDPOINT(bEpNum));

+}

+

+/*******************************************************************************

+* Function Name  : SetEPType

+* Description    : sets the type in the endpoint register.

+* Input          : bEpNum: Endpoint Number. 

+*                  wType: type definition.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void SetEPType(u8 bEpNum, u16 wType)

+{

+  _SetEPType(bEpNum, wType);

+}

+

+/*******************************************************************************

+* Function Name  : GetEPType

+* Description    : Returns the endpoint type.

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : Endpoint Type

+*******************************************************************************/

+u16 GetEPType(u8 bEpNum)

+{

+  return(_GetEPType(bEpNum));

+}

+

+/*******************************************************************************

+* Function Name  : SetEPTxStatus

+* Description    : Set the status of Tx endpoint.

+* Input          : bEpNum: Endpoint Number. 

+*                  wState: new state.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void SetEPTxStatus(u8 bEpNum, u16 wState)

+{

+  _SetEPTxStatus(bEpNum, wState);

+}

+

+/*******************************************************************************

+* Function Name  : SetEPRxStatus

+* Description    : Set the status of Rx endpoint.

+* Input          : bEpNum: Endpoint Number. 

+*                  wState: new state.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void SetEPRxStatus(u8 bEpNum, u16 wState)

+{

+  _SetEPRxStatus(bEpNum, wState);

+}

+

+/*******************************************************************************

+* Function Name  : SetDouBleBuffEPStall

+* Description    : sets the status for Double Buffer Endpoint to STALL

+* Input          : bEpNum: Endpoint Number. 

+*                  bDir: Endpoint direction.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void SetDouBleBuffEPStall(u8 bEpNum, u8 bDir)

+{

+  u16 Endpoint_DTOG_Status;

+  Endpoint_DTOG_Status = GetENDPOINT(bEpNum);

+  if (bDir == EP_DBUF_OUT)

+  { /* OUT double buffered endpoint */

+    _SetENDPOINT(bEpNum, Endpoint_DTOG_Status & ~EPRX_DTOG1);

+  }

+  else if (bDir == EP_DBUF_IN)

+  { /* IN double buffered endpoint */

+    _SetENDPOINT(bEpNum, Endpoint_DTOG_Status & ~EPTX_DTOG1);

+  }

+}

+

+/*******************************************************************************

+* Function Name  : GetEPTxStatus

+* Description    : Returns the endpoint Tx status.

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : Endpoint TX Status

+*******************************************************************************/

+u16 GetEPTxStatus(u8 bEpNum)

+{

+  return(_GetEPTxStatus(bEpNum));

+}

+

+/*******************************************************************************

+* Function Name  : GetEPRxStatus

+* Description    : Returns the endpoint Rx status.

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : Endpoint RX Status

+*******************************************************************************/

+u16 GetEPRxStatus(u8 bEpNum)

+{

+  return(_GetEPRxStatus(bEpNum));

+}

+

+/*******************************************************************************

+* Function Name  : SetEPTxValid

+* Description    : Valid the endpoint Tx Status.

+* Input          : bEpNum: Endpoint Number.  

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void SetEPTxValid(u8 bEpNum)

+{

+  _SetEPTxStatus(bEpNum, EP_TX_VALID);

+}

+

+/*******************************************************************************

+* Function Name  : SetEPRxValid

+* Description    : Valid the endpoint Rx Status.

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void SetEPRxValid(u8 bEpNum)

+{

+  _SetEPRxStatus(bEpNum, EP_RX_VALID);

+}

+

+/*******************************************************************************

+* Function Name  : SetEP_KIND

+* Description    : Clear the EP_KIND bit.

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void SetEP_KIND(u8 bEpNum)

+{

+  _SetEP_KIND(bEpNum);

+}

+

+/*******************************************************************************

+* Function Name  : ClearEP_KIND

+* Description    : set the  EP_KIND bit.

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void ClearEP_KIND(u8 bEpNum)

+{

+  _ClearEP_KIND(bEpNum);

+}

+/*******************************************************************************

+* Function Name  : Clear_Status_Out

+* Description    : Clear the Status Out of the related Endpoint

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void Clear_Status_Out(u8 bEpNum)

+{

+  _ClearEP_KIND(bEpNum);

+}

+/*******************************************************************************

+* Function Name  : Set_Status_Out

+* Description    : Set the Status Out of the related Endpoint

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void Set_Status_Out(u8 bEpNum)

+{

+  _SetEP_KIND(bEpNum);

+}

+/*******************************************************************************

+* Function Name  : SetEPDoubleBuff

+* Description    : Enable the double buffer feature for the endpoint. 

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void SetEPDoubleBuff(u8 bEpNum)

+{

+  _SetEP_KIND(bEpNum);

+}

+/*******************************************************************************

+* Function Name  : ClearEPDoubleBuff

+* Description    : Disable the double buffer feature for the endpoint. 

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void ClearEPDoubleBuff(u8 bEpNum)

+{

+  _ClearEP_KIND(bEpNum);

+}

+/*******************************************************************************

+* Function Name  : GetTxStallStatus

+* Description    : Returns the Stall status of the Tx endpoint.

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : Tx Stall status.

+*******************************************************************************/

+u16 GetTxStallStatus(u8 bEpNum)

+{

+  return(_GetTxStallStatus(bEpNum));

+}

+/*******************************************************************************

+* Function Name  : GetRxStallStatus

+* Description    : Returns the Stall status of the Rx endpoint. 

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : Rx Stall status.

+*******************************************************************************/

+u16 GetRxStallStatus(u8 bEpNum)

+{

+  return(_GetRxStallStatus(bEpNum));

+}

+/*******************************************************************************

+* Function Name  : ClearEP_CTR_RX

+* Description    : Clear the CTR_RX bit.

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void ClearEP_CTR_RX(u8 bEpNum)

+{

+  _ClearEP_CTR_RX(bEpNum);

+}

+/*******************************************************************************

+* Function Name  : ClearEP_CTR_TX

+* Description    : Clear the CTR_TX bit.

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void ClearEP_CTR_TX(u8 bEpNum)

+{

+  _ClearEP_CTR_TX(bEpNum);

+}

+/*******************************************************************************

+* Function Name  : ToggleDTOG_RX

+* Description    : Toggle the DTOG_RX bit.

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void ToggleDTOG_RX(u8 bEpNum)

+{

+  _ToggleDTOG_RX(bEpNum);

+}

+/*******************************************************************************

+* Function Name  : ToggleDTOG_TX

+* Description    : Toggle the DTOG_TX bit.

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void ToggleDTOG_TX(u8 bEpNum)

+{

+  _ToggleDTOG_TX(bEpNum);

+}

+/*******************************************************************************

+* Function Name  : ClearDTOG_RX.

+* Description    : Clear the DTOG_RX bit.

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void ClearDTOG_RX(u8 bEpNum)

+{

+  _ClearDTOG_RX(bEpNum);

+}

+/*******************************************************************************

+* Function Name  : ClearDTOG_TX.

+* Description    : Clear the DTOG_TX bit.

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void ClearDTOG_TX(u8 bEpNum)

+{

+  _ClearDTOG_TX(bEpNum);

+}

+/*******************************************************************************

+* Function Name  : SetEPAddress

+* Description    : Set the endpoint address.

+* Input          : bEpNum: Endpoint Number.

+*                  bAddr: New endpoint address.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void SetEPAddress(u8 bEpNum, u8 bAddr)

+{

+  _SetEPAddress(bEpNum, bAddr);

+}

+/*******************************************************************************

+* Function Name  : GetEPAddress

+* Description    : Get the endpoint address.

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : Endpoint address.

+*******************************************************************************/

+u8 GetEPAddress(u8 bEpNum)

+{

+  return(_GetEPAddress(bEpNum));

+}

+/*******************************************************************************

+* Function Name  : SetEPTxAddr

+* Description    : Set the endpoint Tx buffer address.

+* Input          : bEpNum: Endpoint Number.

+*                  wAddr: new address. 

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void SetEPTxAddr(u8 bEpNum, u16 wAddr)

+{

+  _SetEPTxAddr(bEpNum, wAddr);

+}

+/*******************************************************************************

+* Function Name  : SetEPRxAddr

+* Description    : Set the endpoint Rx buffer address.

+* Input          : bEpNum: Endpoint Number.

+*                  wAddr: new address.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void SetEPRxAddr(u8 bEpNum, u16 wAddr)

+{

+  _SetEPRxAddr(bEpNum, wAddr);

+}

+/*******************************************************************************

+* Function Name  : GetEPTxAddr

+* Description    : Returns the endpoint Tx buffer address.

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : Rx buffer address. 

+*******************************************************************************/

+u16 GetEPTxAddr(u8 bEpNum)

+{

+  return(_GetEPTxAddr(bEpNum));

+}

+/*******************************************************************************

+* Function Name  : GetEPRxAddr.

+* Description    : Returns the endpoint Rx buffer address.

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : Rx buffer address.

+*******************************************************************************/

+u16 GetEPRxAddr(u8 bEpNum)

+{

+  return(_GetEPRxAddr(bEpNum));

+}

+/*******************************************************************************

+* Function Name  : SetEPTxCount.

+* Description    : Set the Tx count.

+* Input          : bEpNum: Endpoint Number.

+*                  wCount: new count value.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void SetEPTxCount(u8 bEpNum, u16 wCount)

+{

+  _SetEPTxCount(bEpNum, wCount);

+}

+/*******************************************************************************

+* Function Name  : SetEPCountRxReg.

+* Description    : Set the Count Rx Register value.

+* Input          : *pdwReg: point to the register.

+*                  wCount: the new register value.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void SetEPCountRxReg(u32 *pdwReg, u16 wCount)

+{

+  _SetEPCountRxReg(dwReg, wCount);

+}

+/*******************************************************************************

+* Function Name  : SetEPRxCount

+* Description    : Set the Rx count.

+* Input          : bEpNum: Endpoint Number. 

+*                  wCount: the new count value.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void SetEPRxCount(u8 bEpNum, u16 wCount)

+{

+  _SetEPRxCount(bEpNum, wCount);

+}

+/*******************************************************************************

+* Function Name  : GetEPTxCount

+* Description    : Get the Tx count.

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None

+* Return         : Tx count value.

+*******************************************************************************/

+u16 GetEPTxCount(u8 bEpNum)

+{

+  return(_GetEPTxCount(bEpNum));

+}

+/*******************************************************************************

+* Function Name  : GetEPRxCount

+* Description    : Get the Rx count.

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : Rx count value.

+*******************************************************************************/

+u16 GetEPRxCount(u8 bEpNum)

+{

+  return(_GetEPRxCount(bEpNum));

+}

+/*******************************************************************************

+* Function Name  : SetEPDblBuffAddr

+* Description    : Set the addresses of the buffer 0 and 1.

+* Input          : bEpNum: Endpoint Number.  

+*                  wBuf0Addr: new address of buffer 0. 

+*                  wBuf1Addr: new address of buffer 1.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void SetEPDblBuffAddr(u8 bEpNum, u16 wBuf0Addr, u16 wBuf1Addr)

+{

+  _SetEPDblBuffAddr(bEpNum, wBuf0Addr, wBuf1Addr);

+}

+/*******************************************************************************

+* Function Name  : SetEPDblBuf0Addr

+* Description    : Set the Buffer 1 address.

+* Input          : bEpNum: Endpoint Number

+*                  wBuf0Addr: new address.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void SetEPDblBuf0Addr(u8 bEpNum, u16 wBuf0Addr)

+{

+  _SetEPDblBuf0Addr(bEpNum, wBuf0Addr);

+}

+/*******************************************************************************

+* Function Name  : SetEPDblBuf1Addr

+* Description    : Set the Buffer 1 address.

+* Input          : bEpNum: Endpoint Number

+*                  wBuf1Addr: new address.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void SetEPDblBuf1Addr(u8 bEpNum, u16 wBuf1Addr)

+{

+  _SetEPDblBuf1Addr(bEpNum, wBuf1Addr);

+}

+/*******************************************************************************

+* Function Name  : GetEPDblBuf0Addr

+* Description    : Returns the address of the Buffer 0.

+* Input          : bEpNum: Endpoint Number.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+u16 GetEPDblBuf0Addr(u8 bEpNum)

+{

+  return(_GetEPDblBuf0Addr(bEpNum));

+}

+/*******************************************************************************

+* Function Name  : GetEPDblBuf1Addr

+* Description    : Returns the address of the Buffer 1.

+* Input          : bEpNum: Endpoint Number.

+* Output         : None.

+* Return         : Address of the Buffer 1.

+*******************************************************************************/

+u16 GetEPDblBuf1Addr(u8 bEpNum)

+{

+  return(_GetEPDblBuf1Addr(bEpNum));

+}

+/*******************************************************************************

+* Function Name  : SetEPDblBuffCount

+* Description    : Set the number of bytes for a double Buffer 

+*                  endpoint.

+* Input          : bEpNum,bDir, wCount

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void SetEPDblBuffCount(u8 bEpNum, u8 bDir, u16 wCount)

+{

+  _SetEPDblBuffCount(bEpNum, bDir, wCount);

+}

+/*******************************************************************************

+* Function Name  : SetEPDblBuf0Count

+* Description    : Set the number of bytes in the buffer 0 of a double Buffer 

+*                  endpoint.

+* Input          : bEpNum, bDir,  wCount

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void SetEPDblBuf0Count(u8 bEpNum, u8 bDir, u16 wCount)

+{

+  _SetEPDblBuf0Count(bEpNum, bDir, wCount);

+}

+/*******************************************************************************

+* Function Name  : SetEPDblBuf1Count

+* Description    : Set the number of bytes in the buffer 0 of a double Buffer 

+*                  endpoint.

+* Input          : bEpNum,  bDir,  wCount

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void SetEPDblBuf1Count(u8 bEpNum, u8 bDir, u16 wCount)

+{

+  _SetEPDblBuf1Count(bEpNum, bDir, wCount);

+}

+/*******************************************************************************

+* Function Name  : GetEPDblBuf0Count

+* Description    : Returns the number of byte received in the buffer 0 of a double

+*                  Buffer endpoint.

+* Input          : bEpNum: Endpoint Number.

+* Output         : None.

+* Return         : Endpoint Buffer 0 count

+*******************************************************************************/

+u16 GetEPDblBuf0Count(u8 bEpNum)

+{

+  return(_GetEPDblBuf0Count(bEpNum));

+}

+/*******************************************************************************

+* Function Name  : GetEPDblBuf1Count

+* Description    : Returns the number of data received in the buffer 1 of a double

+*                  Buffer endpoint.

+* Input          : bEpNum: Endpoint Number.

+* Output         : None.

+* Return         : Endpoint Buffer 1 count.

+*******************************************************************************/

+u16 GetEPDblBuf1Count(u8 bEpNum)

+{

+  return(_GetEPDblBuf1Count(bEpNum));

+}

+/*******************************************************************************

+* Function Name  : GetEPDblBufDir

+* Description    : gets direction of the double buffered endpoint

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : EP_DBUF_OUT, EP_DBUF_IN,

+*                  EP_DBUF_ERR if the endpoint counter not yet programmed.

+*******************************************************************************/

+EP_DBUF_DIR GetEPDblBufDir(u8 bEpNum)

+{

+  if ((u16)(*_pEPRxCount(bEpNum) & 0xFC00) != 0)

+    return(EP_DBUF_OUT);

+  else if (((u16)(*_pEPTxCount(bEpNum)) & 0x03FF) != 0)

+    return(EP_DBUF_IN);

+  else

+    return(EP_DBUF_ERR);

+}

+/*******************************************************************************

+* Function Name  : FreeUserBuffer

+* Description    : free buffer used from the application realizing it to the line

+                   toggles bit SW_BUF in the double buffered endpoint register

+* Input          : bEpNum, bDir

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+void FreeUserBuffer(u8 bEpNum, u8 bDir)

+{

+  if (bDir == EP_DBUF_OUT)

+  { /* OUT double buffered endpoint */

+    _ToggleDTOG_TX(bEpNum);

+  }

+  else if (bDir == EP_DBUF_IN)

+  { /* IN double buffered endpoint */

+    _ToggleDTOG_RX(bEpNum);

+  }

+}

+

+/*******************************************************************************

+* Function Name  : ToWord

+* Description    : merge two byte in a word.

+* Input          : bh: byte high, bl: bytes low.

+* Output         : None.

+* Return         : resulted word.

+*******************************************************************************/

+u16 ToWord(u8 bh, u8 bl)

+{

+  u16 wRet;

+  wRet = (u16)bl | ((u16)bh << 8);

+  return(wRet);

+}

+/*******************************************************************************

+* Function Name  : ByteSwap

+* Description    : Swap two byte in a word.

+* Input          : wSwW: word to Swap.

+* Output         : None.

+* Return         : resulted word.

+*******************************************************************************/

+u16 ByteSwap(u16 wSwW)

+{

+  u8 bTemp;

+  u16 wRet;

+  bTemp = (u8)(wSwW & 0xff);

+  wRet =  (wSwW >> 8) | ((u16)bTemp << 8);

+  return(wRet);

+}

+

+/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/

diff --git a/libmaple/usb/usb_lib/usb_regs.h b/libmaple/usb/usb_lib/usb_regs.h
new file mode 100644
index 0000000..9a4df75
--- /dev/null
+++ b/libmaple/usb/usb_lib/usb_regs.h
@@ -0,0 +1,627 @@
+/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************

+* File Name          : usb_regs.h

+* Author             : MCD Application Team

+* Version            : V2.2.1

+* Date               : 09/22/2008

+* Description        : Interface prototype functions to USB cell registers

+********************************************************************************

+* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS

+* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.

+* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,

+* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE

+* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING

+* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.

+*******************************************************************************/

+

+/* Define to prevent recursive inclusion -------------------------------------*/

+#ifndef __USB_REGS_H

+#define __USB_REGS_H

+

+/* Includes ------------------------------------------------------------------*/

+/* Exported types ------------------------------------------------------------*/

+#if defined(__cplusplus)

+extern "C" {

+#endif

+

+typedef enum _EP_DBUF_DIR

+{

+  /* double buffered endpoint direction */

+  EP_DBUF_ERR,

+  EP_DBUF_OUT,

+  EP_DBUF_IN

+}EP_DBUF_DIR;

+

+/* endpoint buffer number */

+enum EP_BUF_NUM

+{

+  EP_NOBUF,

+  EP_BUF0,

+  EP_BUF1

+};

+

+/* Exported constants --------------------------------------------------------*/

+#define RegBase  (0x40005C00L)  /* USB_IP Peripheral Registers base address */

+#define PMAAddr  (0x40006000L)  /* USB_IP Packet Memory Area base address   */

+

+/******************************************************************************/

+/*                         General registers                                  */

+/******************************************************************************/

+

+/* Control register */

+#define CNTR    ((volatile unsigned *)(RegBase + 0x40))

+/* Interrupt status register */

+#define ISTR    ((volatile unsigned *)(RegBase + 0x44))

+/* Frame number register */

+#define FNR     ((volatile unsigned *)(RegBase + 0x48))

+/* Device address register */

+#define DADDR   ((volatile unsigned *)(RegBase + 0x4C))

+/* Buffer Table address register */

+#define BTABLE  ((volatile unsigned *)(RegBase + 0x50))

+/******************************************************************************/

+/*                         Endpoint registers                                 */

+/******************************************************************************/

+#define EP0REG  ((volatile unsigned *)(RegBase)) /* endpoint 0 register address */

+

+/* endpoints enumeration */

+#define ENDP0   ((u8)0)

+#define ENDP1   ((u8)1)

+#define ENDP2   ((u8)2)

+#define ENDP3   ((u8)3)

+#define ENDP4   ((u8)4)

+#define ENDP5   ((u8)5)

+#define ENDP6   ((u8)6)

+#define ENDP7   ((u8)7)

+/******************************************************************************/

+/*                       ISTR interrupt events                                */

+/******************************************************************************/

+#define ISTR_CTR    (0x8000) /* Correct TRansfer (clear-only bit) */

+#define ISTR_DOVR   (0x4000) /* DMA OVeR/underrun (clear-only bit) */

+#define ISTR_ERR    (0x2000) /* ERRor (clear-only bit) */

+#define ISTR_WKUP   (0x1000) /* WaKe UP (clear-only bit) */

+#define ISTR_SUSP   (0x0800) /* SUSPend (clear-only bit) */

+#define ISTR_RESET  (0x0400) /* RESET (clear-only bit) */

+#define ISTR_SOF    (0x0200) /* Start Of Frame (clear-only bit) */

+#define ISTR_ESOF   (0x0100) /* Expected Start Of Frame (clear-only bit) */

+

+

+#define ISTR_DIR    (0x0010)  /* DIRection of transaction (read-only bit)  */

+#define ISTR_EP_ID  (0x000F)  /* EndPoint IDentifier (read-only bit)  */

+

+#define CLR_CTR    (~ISTR_CTR)   /* clear Correct TRansfer bit */

+#define CLR_DOVR   (~ISTR_DOVR)  /* clear DMA OVeR/underrun bit*/

+#define CLR_ERR    (~ISTR_ERR)   /* clear ERRor bit */

+#define CLR_WKUP   (~ISTR_WKUP)  /* clear WaKe UP bit     */

+#define CLR_SUSP   (~ISTR_SUSP)  /* clear SUSPend bit     */

+#define CLR_RESET  (~ISTR_RESET) /* clear RESET bit      */

+#define CLR_SOF    (~ISTR_SOF)   /* clear Start Of Frame bit   */

+#define CLR_ESOF   (~ISTR_ESOF)  /* clear Expected Start Of Frame bit */

+

+/******************************************************************************/

+/*             CNTR control register bits definitions                         */

+/******************************************************************************/

+#define CNTR_CTRM   (0x8000) /* Correct TRansfer Mask */

+#define CNTR_DOVRM  (0x4000) /* DMA OVeR/underrun Mask */

+#define CNTR_ERRM   (0x2000) /* ERRor Mask */

+#define CNTR_WKUPM  (0x1000) /* WaKe UP Mask */

+#define CNTR_SUSPM  (0x0800) /* SUSPend Mask */

+#define CNTR_RESETM (0x0400) /* RESET Mask   */

+#define CNTR_SOFM   (0x0200) /* Start Of Frame Mask */

+#define CNTR_ESOFM  (0x0100) /* Expected Start Of Frame Mask */

+

+

+#define CNTR_RESUME (0x0010) /* RESUME request */

+#define CNTR_FSUSP  (0x0008) /* Force SUSPend */

+#define CNTR_LPMODE (0x0004) /* Low-power MODE */

+#define CNTR_PDWN   (0x0002) /* Power DoWN */

+#define CNTR_FRES   (0x0001) /* Force USB RESet */

+

+/******************************************************************************/

+/*                FNR Frame Number Register bit definitions                   */

+/******************************************************************************/

+#define FNR_RXDP (0x8000) /* status of D+ data line */

+#define FNR_RXDM (0x4000) /* status of D- data line */

+#define FNR_LCK  (0x2000) /* LoCKed */

+#define FNR_LSOF (0x1800) /* Lost SOF */

+#define FNR_FN  (0x07FF) /* Frame Number */

+/******************************************************************************/

+/*               DADDR Device ADDRess bit definitions                         */

+/******************************************************************************/

+#define DADDR_EF (0x80)

+#define DADDR_ADD (0x7F)

+/******************************************************************************/

+/*                            Endpoint register                               */

+/******************************************************************************/

+/* bit positions */

+#define EP_CTR_RX      (0x8000) /* EndPoint Correct TRansfer RX */

+#define EP_DTOG_RX     (0x4000) /* EndPoint Data TOGGLE RX */

+#define EPRX_STAT      (0x3000) /* EndPoint RX STATus bit field */

+#define EP_SETUP       (0x0800) /* EndPoint SETUP */

+#define EP_T_FIELD     (0x0600) /* EndPoint TYPE */

+#define EP_KIND        (0x0100) /* EndPoint KIND */

+#define EP_CTR_TX      (0x0080) /* EndPoint Correct TRansfer TX */

+#define EP_DTOG_TX     (0x0040) /* EndPoint Data TOGGLE TX */

+#define EPTX_STAT      (0x0030) /* EndPoint TX STATus bit field */

+#define EPADDR_FIELD   (0x000F) /* EndPoint ADDRess FIELD */

+

+/* EndPoint REGister MASK (no toggle fields) */

+#define EPREG_MASK     (EP_CTR_RX|EP_SETUP|EP_T_FIELD|EP_KIND|EP_CTR_TX|EPADDR_FIELD)

+

+/* EP_TYPE[1:0] EndPoint TYPE */

+#define EP_TYPE_MASK   (0x0600) /* EndPoint TYPE Mask */

+#define EP_BULK        (0x0000) /* EndPoint BULK */

+#define EP_CONTROL     (0x0200) /* EndPoint CONTROL */

+#define EP_ISOCHRONOUS (0x0400) /* EndPoint ISOCHRONOUS */

+#define EP_INTERRUPT   (0x0600) /* EndPoint INTERRUPT */

+#define EP_T_MASK      (~EP_T_FIELD & EPREG_MASK)

+

+

+/* EP_KIND EndPoint KIND */

+#define EPKIND_MASK    (~EP_KIND & EPREG_MASK)

+

+/* STAT_TX[1:0] STATus for TX transfer */

+#define EP_TX_DIS      (0x0000) /* EndPoint TX DISabled */

+#define EP_TX_STALL    (0x0010) /* EndPoint TX STALLed */

+#define EP_TX_NAK      (0x0020) /* EndPoint TX NAKed */

+#define EP_TX_VALID    (0x0030) /* EndPoint TX VALID */

+#define EPTX_DTOG1     (0x0010) /* EndPoint TX Data TOGgle bit1 */

+#define EPTX_DTOG2     (0x0020) /* EndPoint TX Data TOGgle bit2 */

+#define EPTX_DTOGMASK  (EPTX_STAT|EPREG_MASK)

+

+/* STAT_RX[1:0] STATus for RX transfer */

+#define EP_RX_DIS      (0x0000) /* EndPoint RX DISabled */

+#define EP_RX_STALL    (0x1000) /* EndPoint RX STALLed */

+#define EP_RX_NAK      (0x2000) /* EndPoint RX NAKed */

+#define EP_RX_VALID    (0x3000) /* EndPoint RX VALID */

+#define EPRX_DTOG1     (0x1000) /* EndPoint RX Data TOGgle bit1 */

+#define EPRX_DTOG2     (0x2000) /* EndPoint RX Data TOGgle bit1 */

+#define EPRX_DTOGMASK  (EPRX_STAT|EPREG_MASK)

+/* Exported macro ------------------------------------------------------------*/

+/* SetCNTR */

+#define _SetCNTR(wRegValue)  (*CNTR   = (u16)wRegValue)

+

+/* SetISTR */

+#define _SetISTR(wRegValue)  (*ISTR   = (u16)wRegValue)

+

+/* SetDADDR */

+#define _SetDADDR(wRegValue) (*DADDR  = (u16)wRegValue)

+

+/* SetBTABLE */

+#define _SetBTABLE(wRegValue)(*BTABLE = (u16)(wRegValue & 0xFFF8))

+

+/* GetCNTR */

+#define _GetCNTR()   ((u16) *CNTR)

+

+/* GetISTR */

+#define _GetISTR()   ((u16) *ISTR)

+

+/* GetFNR */

+#define _GetFNR()    ((u16) *FNR)

+

+/* GetDADDR */

+#define _GetDADDR()  ((u16) *DADDR)

+

+/* GetBTABLE */

+#define _GetBTABLE() ((u16) *BTABLE)

+

+/* SetENDPOINT */

+#define _SetENDPOINT(bEpNum,wRegValue)  (*(EP0REG + bEpNum)= \

+    (u16)wRegValue)

+

+/* GetENDPOINT */

+#define _GetENDPOINT(bEpNum)        ((u16)(*(EP0REG + bEpNum)))

+

+/*******************************************************************************

+* Macro Name     : SetEPType

+* Description    : sets the type in the endpoint register(bits EP_TYPE[1:0])

+* Input          : bEpNum: Endpoint Number. 

+*                  wType

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+#define _SetEPType(bEpNum,wType) (_SetENDPOINT(bEpNum,\

+                                  ((_GetENDPOINT(bEpNum) & EP_T_MASK) | wType)))

+

+/*******************************************************************************

+* Macro Name     : GetEPType

+* Description    : gets the type in the endpoint register(bits EP_TYPE[1:0]) 

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : Endpoint Type

+*******************************************************************************/

+#define _GetEPType(bEpNum) (_GetENDPOINT(bEpNum) & EP_T_FIELD)

+

+/*******************************************************************************

+* Macro Name     : SetEPTxStatus

+* Description    : sets the status for tx transfer (bits STAT_TX[1:0]).

+* Input          : bEpNum: Endpoint Number. 

+*                  wState: new state

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+#define _SetEPTxStatus(bEpNum,wState) {\

+    register u16 _wRegVal;       \

+    _wRegVal = _GetENDPOINT(bEpNum) & EPTX_DTOGMASK;\

+    /* toggle first bit ? */     \

+    if((EPTX_DTOG1 & wState)!= 0)      \

+      _wRegVal ^= EPTX_DTOG1;        \

+    /* toggle second bit ?  */         \

+    if((EPTX_DTOG2 & wState)!= 0)      \

+      _wRegVal ^= EPTX_DTOG2;        \

+    _SetENDPOINT(bEpNum, _wRegVal);    \

+  } /* _SetEPTxStatus */

+

+/*******************************************************************************

+* Macro Name     : SetEPRxStatus

+* Description    : sets the status for rx transfer (bits STAT_TX[1:0])

+* Input          : bEpNum: Endpoint Number. 

+*                  wState: new state.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+#define _SetEPRxStatus(bEpNum,wState) {\

+    register u16 _wRegVal;   \

+    \

+    _wRegVal = _GetENDPOINT(bEpNum) & EPRX_DTOGMASK;\

+    /* toggle first bit ? */  \

+    if((EPRX_DTOG1 & wState)!= 0) \

+      _wRegVal ^= EPRX_DTOG1;  \

+    /* toggle second bit ? */  \

+    if((EPRX_DTOG2 & wState)!= 0) \

+      _wRegVal ^= EPRX_DTOG2;  \

+    _SetENDPOINT(bEpNum, _wRegVal); \

+  } /* _SetEPRxStatus */

+/*******************************************************************************

+* Macro Name     : GetEPTxStatus / GetEPRxStatus 

+* Description    : gets the status for tx/rx transfer (bits STAT_TX[1:0]

+*                  /STAT_RX[1:0])

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : status .

+*******************************************************************************/

+#define _GetEPTxStatus(bEpNum) ((u16)_GetENDPOINT(bEpNum) & EPTX_STAT)

+

+#define _GetEPRxStatus(bEpNum) ((u16)_GetENDPOINT(bEpNum) & EPRX_STAT)

+

+/*******************************************************************************

+* Macro Name     : SetEPTxValid / SetEPRxValid 

+* Description    : sets directly the VALID tx/rx-status into the enpoint register

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+#define _SetEPTxValid(bEpNum)     (_SetEPTxStatus(bEpNum, EP_TX_VALID))

+

+#define _SetEPRxValid(bEpNum)     (_SetEPRxStatus(bEpNum, EP_RX_VALID))

+

+/*******************************************************************************

+* Macro Name     : GetTxStallStatus / GetRxStallStatus.

+* Description    : checks stall condition in an endpoint.

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : TRUE = endpoint in stall condition.

+*******************************************************************************/

+#define _GetTxStallStatus(bEpNum) (_GetEPTxStatus(bEpNum) \

+                                   == EP_TX_STALL)

+#define _GetRxStallStatus(bEpNum) (_GetEPRxStatus(bEpNum) \

+                                   == EP_RX_STALL)

+

+/*******************************************************************************

+* Macro Name     : SetEP_KIND / ClearEP_KIND.

+* Description    : set & clear EP_KIND bit.

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+#define _SetEP_KIND(bEpNum)    (_SetENDPOINT(bEpNum, \

+                                (_GetENDPOINT(bEpNum) | EP_KIND) & EPREG_MASK))

+#define _ClearEP_KIND(bEpNum)  (_SetENDPOINT(bEpNum, \

+                                (_GetENDPOINT(bEpNum) & EPKIND_MASK)))

+

+/*******************************************************************************

+* Macro Name     : Set_Status_Out / Clear_Status_Out.

+* Description    : Sets/clears directly STATUS_OUT bit in the endpoint register.

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+#define _Set_Status_Out(bEpNum)    _SetEP_KIND(bEpNum)

+#define _Clear_Status_Out(bEpNum)  _ClearEP_KIND(bEpNum)

+

+/*******************************************************************************

+* Macro Name     : SetEPDoubleBuff / ClearEPDoubleBuff.

+* Description    : Sets/clears directly EP_KIND bit in the endpoint register.

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+#define _SetEPDoubleBuff(bEpNum)   _SetEP_KIND(bEpNum)

+#define _ClearEPDoubleBuff(bEpNum) _ClearEP_KIND(bEpNum)

+

+/*******************************************************************************

+* Macro Name     : ClearEP_CTR_RX / ClearEP_CTR_TX.

+* Description    : Clears bit CTR_RX / CTR_TX in the endpoint register.

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+#define _ClearEP_CTR_RX(bEpNum)   (_SetENDPOINT(bEpNum,\

+                                   _GetENDPOINT(bEpNum) & 0x7FFF & EPREG_MASK))

+#define _ClearEP_CTR_TX(bEpNum)   (_SetENDPOINT(bEpNum,\

+                                   _GetENDPOINT(bEpNum) & 0xFF7F & EPREG_MASK))

+

+/*******************************************************************************

+* Macro Name     : ToggleDTOG_RX / ToggleDTOG_TX .

+* Description    : Toggles DTOG_RX / DTOG_TX bit in the endpoint register.

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+#define _ToggleDTOG_RX(bEpNum)    (_SetENDPOINT(bEpNum, \

+                                   EP_DTOG_RX | _GetENDPOINT(bEpNum) & EPREG_MASK))

+#define _ToggleDTOG_TX(bEpNum)    (_SetENDPOINT(bEpNum, \

+                                   EP_DTOG_TX | _GetENDPOINT(bEpNum) & EPREG_MASK))

+

+/*******************************************************************************

+* Macro Name     : ClearDTOG_RX / ClearDTOG_TX.

+* Description    : Clears DTOG_RX / DTOG_TX bit in the endpoint register.

+* Input          : bEpNum: Endpoint Number. 

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+#define _ClearDTOG_RX(bEpNum)  if((_GetENDPOINT(bEpNum) & EP_DTOG_RX) != 0)\

+    _ToggleDTOG_RX(bEpNum)

+#define _ClearDTOG_TX(bEpNum)  if((_GetENDPOINT(bEpNum) & EP_DTOG_TX) != 0)\

+    _ToggleDTOG_TX(bEpNum)

+/*******************************************************************************

+* Macro Name     : SetEPAddress.

+* Description    : Sets address in an endpoint register.

+* Input          : bEpNum: Endpoint Number.

+*                  bAddr: Address. 

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+#define _SetEPAddress(bEpNum,bAddr) _SetENDPOINT(bEpNum,\

+    _GetENDPOINT(bEpNum) & EPREG_MASK | bAddr)

+

+/*******************************************************************************

+* Macro Name     : GetEPAddress.

+* Description    : Gets address in an endpoint register.

+* Input          : bEpNum: Endpoint Number.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+#define _GetEPAddress(bEpNum) ((u8)(_GetENDPOINT(bEpNum) & EPADDR_FIELD))

+

+#define _pEPTxAddr(bEpNum) ((u32 *)((_GetBTABLE()+bEpNum*8  )*2 + PMAAddr))

+#define _pEPTxCount(bEpNum) ((u32 *)((_GetBTABLE()+bEpNum*8+2)*2 + PMAAddr))

+#define _pEPRxAddr(bEpNum) ((u32 *)((_GetBTABLE()+bEpNum*8+4)*2 + PMAAddr))

+#define _pEPRxCount(bEpNum) ((u32 *)((_GetBTABLE()+bEpNum*8+6)*2 + PMAAddr))

+

+/*******************************************************************************

+* Macro Name     : SetEPTxAddr / SetEPRxAddr.

+* Description    : sets address of the tx/rx buffer.

+* Input          : bEpNum: Endpoint Number.

+*                  wAddr: address to be set (must be word aligned).

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+#define _SetEPTxAddr(bEpNum,wAddr) (*_pEPTxAddr(bEpNum) = ((wAddr >> 1) << 1))

+#define _SetEPRxAddr(bEpNum,wAddr) (*_pEPRxAddr(bEpNum) = ((wAddr >> 1) << 1))

+

+/*******************************************************************************

+* Macro Name     : GetEPTxAddr / GetEPRxAddr.

+* Description    : Gets address of the tx/rx buffer.

+* Input          : bEpNum: Endpoint Number.

+* Output         : None.

+* Return         : address of the buffer.

+*******************************************************************************/

+#define _GetEPTxAddr(bEpNum) ((u16)*_pEPTxAddr(bEpNum))

+#define _GetEPRxAddr(bEpNum) ((u16)*_pEPRxAddr(bEpNum))

+

+/*******************************************************************************

+* Macro Name     : SetEPCountRxReg.

+* Description    : Sets counter of rx buffer with no. of blocks.

+* Input          : pdwReg: pointer to counter.

+*                  wCount: Counter.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+#define _BlocksOf32(dwReg,wCount,wNBlocks) {\

+    wNBlocks = wCount >> 5;\

+    if((wCount & 0x1f) == 0)\

+      wNBlocks--;\

+    *pdwReg = (u32)((wNBlocks << 10) | 0x8000);\

+  }/* _BlocksOf32 */

+

+#define _BlocksOf2(dwReg,wCount,wNBlocks) {\

+    wNBlocks = wCount >> 1;\

+    if((wCount & 0x1) != 0)\

+      wNBlocks++;\

+    *pdwReg = (u32)(wNBlocks << 10);\

+  }/* _BlocksOf2 */

+

+#define _SetEPCountRxReg(dwReg,wCount)  {\

+    u16 wNBlocks;\

+    if(wCount > 62){_BlocksOf32(dwReg,wCount,wNBlocks);}\

+    else {_BlocksOf2(dwReg,wCount,wNBlocks);}\

+  }/* _SetEPCountRxReg */

+

+

+

+#define _SetEPRxDblBuf0Count(bEpNum,wCount) {\

+    u32 *pdwReg = _pEPTxCount(bEpNum); \

+    _SetEPCountRxReg(pdwReg, wCount);\

+  }

+/*******************************************************************************

+* Macro Name     : SetEPTxCount / SetEPRxCount.

+* Description    : sets counter for the tx/rx buffer.

+* Input          : bEpNum: endpoint number.

+*                  wCount: Counter value.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+#define _SetEPTxCount(bEpNum,wCount) (*_pEPTxCount(bEpNum) = wCount)

+#define _SetEPRxCount(bEpNum,wCount) {\

+    u32 *pdwReg = _pEPRxCount(bEpNum); \

+    _SetEPCountRxReg(pdwReg, wCount);\

+  }

+/*******************************************************************************

+* Macro Name     : GetEPTxCount / GetEPRxCount.

+* Description    : gets counter of the tx buffer.

+* Input          : bEpNum: endpoint number.

+* Output         : None.

+* Return         : Counter value.

+*******************************************************************************/

+#define _GetEPTxCount(bEpNum)((u16)(*_pEPTxCount(bEpNum)) & 0x3ff)

+#define _GetEPRxCount(bEpNum)((u16)(*_pEPRxCount(bEpNum)) & 0x3ff)

+

+/*******************************************************************************

+* Macro Name     : SetEPDblBuf0Addr / SetEPDblBuf1Addr.

+* Description    : Sets buffer 0/1 address in a double buffer endpoint.

+* Input          : bEpNum: endpoint number.

+*                : wBuf0Addr: buffer 0 address.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+#define _SetEPDblBuf0Addr(bEpNum,wBuf0Addr) {_SetEPTxAddr(bEpNum, wBuf0Addr);}

+#define _SetEPDblBuf1Addr(bEpNum,wBuf1Addr) {_SetEPRxAddr(bEpNum, wBuf1Addr);}

+

+/*******************************************************************************

+* Macro Name     : SetEPDblBuffAddr.

+* Description    : Sets addresses in a double buffer endpoint.

+* Input          : bEpNum: endpoint number.

+*                : wBuf0Addr: buffer 0 address.

+*                : wBuf1Addr = buffer 1 address.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+#define _SetEPDblBuffAddr(bEpNum,wBuf0Addr,wBuf1Addr) { \

+    _SetEPDblBuf0Addr(bEpNum, wBuf0Addr);\

+    _SetEPDblBuf1Addr(bEpNum, wBuf1Addr);\

+  } /* _SetEPDblBuffAddr */

+

+/*******************************************************************************

+* Macro Name     : GetEPDblBuf0Addr / GetEPDblBuf1Addr.

+* Description    : Gets buffer 0/1 address of a double buffer endpoint.

+* Input          : bEpNum: endpoint number.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+#define _GetEPDblBuf0Addr(bEpNum) (_GetEPTxAddr(bEpNum))

+#define _GetEPDblBuf1Addr(bEpNum) (_GetEPRxAddr(bEpNum))

+

+/*******************************************************************************

+* Macro Name     : SetEPDblBuffCount / SetEPDblBuf0Count / SetEPDblBuf1Count.

+* Description    : Gets buffer 0/1 address of a double buffer endpoint.

+* Input          : bEpNum: endpoint number.

+*                : bDir: endpoint dir  EP_DBUF_OUT = OUT 

+*                                      EP_DBUF_IN  = IN 

+*                : wCount: Counter value    

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+#define _SetEPDblBuf0Count(bEpNum, bDir, wCount)  { \

+    if(bDir == EP_DBUF_OUT)\

+      /* OUT endpoint */ \

+    {_SetEPRxDblBuf0Count(bEpNum,wCount);} \

+    else if(bDir == EP_DBUF_IN)\

+      /* IN endpoint */ \

+      *_pEPTxCount(bEpNum) = (u32)wCount;  \

+  } /* SetEPDblBuf0Count*/

+

+#define _SetEPDblBuf1Count(bEpNum, bDir, wCount)  { \

+    if(bDir == EP_DBUF_OUT)\

+      /* OUT endpoint */ \

+    {_SetEPRxCount(bEpNum,wCount);}\

+    else if(bDir == EP_DBUF_IN)\

+      /* IN endpoint */\

+      *_pEPRxCount(bEpNum) = (u32)wCount; \

+  } /* SetEPDblBuf1Count */

+

+#define _SetEPDblBuffCount(bEpNum, bDir, wCount) {\

+    _SetEPDblBuf0Count(bEpNum, bDir, wCount); \

+    _SetEPDblBuf1Count(bEpNum, bDir, wCount); \

+  } /* _SetEPDblBuffCount  */

+

+/*******************************************************************************

+* Macro Name     : GetEPDblBuf0Count / GetEPDblBuf1Count.

+* Description    : Gets buffer 0/1 rx/tx counter for double buffering.

+* Input          : bEpNum: endpoint number.

+* Output         : None.

+* Return         : None.

+*******************************************************************************/

+#define _GetEPDblBuf0Count(bEpNum) (_GetEPTxCount(bEpNum))

+#define _GetEPDblBuf1Count(bEpNum) (_GetEPRxCount(bEpNum))

+

+

+/* External variables --------------------------------------------------------*/

+extern volatile u16 wIstr;  /* ISTR register last read value */

+

+/* Exported functions ------------------------------------------------------- */

+void SetCNTR(u16 /*wRegValue*/);

+void SetISTR(u16 /*wRegValue*/);

+void SetDADDR(u16 /*wRegValue*/);

+void SetBTABLE(u16 /*wRegValue*/);

+u16 GetCNTR(void);

+u16 GetISTR(void);

+u16 GetFNR(void);

+u16 GetDADDR(void);

+u16 GetBTABLE(void);

+void SetENDPOINT(u8 /*bEpNum*/, u16 /*wRegValue*/);

+u16 GetENDPOINT(u8 /*bEpNum*/);

+void SetEPType(u8 /*bEpNum*/, u16 /*wType*/);

+u16 GetEPType(u8 /*bEpNum*/);

+void SetEPTxStatus(u8 /*bEpNum*/, u16 /*wState*/);

+void SetEPRxStatus(u8 /*bEpNum*/, u16 /*wState*/);

+void SetDouBleBuffEPStall(u8 /*bEpNum*/, u8 bDir);

+u16 GetEPTxStatus(u8 /*bEpNum*/);

+u16 GetEPRxStatus(u8 /*bEpNum*/);

+void SetEPTxValid(u8 /*bEpNum*/);

+void SetEPRxValid(u8 /*bEpNum*/);

+u16 GetTxStallStatus(u8 /*bEpNum*/);

+u16 GetRxStallStatus(u8 /*bEpNum*/);

+void SetEP_KIND(u8 /*bEpNum*/);

+void ClearEP_KIND(u8 /*bEpNum*/);

+void Set_Status_Out(u8 /*bEpNum*/);

+void Clear_Status_Out(u8 /*bEpNum*/);

+void SetEPDoubleBuff(u8 /*bEpNum*/);

+void ClearEPDoubleBuff(u8 /*bEpNum*/);

+void ClearEP_CTR_RX(u8 /*bEpNum*/);

+void ClearEP_CTR_TX(u8 /*bEpNum*/);

+void ToggleDTOG_RX(u8 /*bEpNum*/);

+void ToggleDTOG_TX(u8 /*bEpNum*/);

+void ClearDTOG_RX(u8 /*bEpNum*/);

+void ClearDTOG_TX(u8 /*bEpNum*/);

+void SetEPAddress(u8 /*bEpNum*/, u8 /*bAddr*/);

+u8 GetEPAddress(u8 /*bEpNum*/);

+void SetEPTxAddr(u8 /*bEpNum*/, u16 /*wAddr*/);

+void SetEPRxAddr(u8 /*bEpNum*/, u16 /*wAddr*/);

+u16 GetEPTxAddr(u8 /*bEpNum*/);

+u16 GetEPRxAddr(u8 /*bEpNum*/);

+void SetEPCountRxReg(u32 * /*pdwReg*/, u16 /*wCount*/);

+void SetEPTxCount(u8 /*bEpNum*/, u16 /*wCount*/);

+void SetEPRxCount(u8 /*bEpNum*/, u16 /*wCount*/);

+u16 GetEPTxCount(u8 /*bEpNum*/);

+u16 GetEPRxCount(u8 /*bEpNum*/);

+void SetEPDblBuf0Addr(u8 /*bEpNum*/, u16 /*wBuf0Addr*/);

+void SetEPDblBuf1Addr(u8 /*bEpNum*/, u16 /*wBuf1Addr*/);

+void SetEPDblBuffAddr(u8 /*bEpNum*/, u16 /*wBuf0Addr*/, u16 /*wBuf1Addr*/);

+u16 GetEPDblBuf0Addr(u8 /*bEpNum*/);

+u16 GetEPDblBuf1Addr(u8 /*bEpNum*/);

+void SetEPDblBuffCount(u8 /*bEpNum*/, u8 /*bDir*/, u16 /*wCount*/);

+void SetEPDblBuf0Count(u8 /*bEpNum*/, u8 /*bDir*/, u16 /*wCount*/);

+void SetEPDblBuf1Count(u8 /*bEpNum*/, u8 /*bDir*/, u16 /*wCount*/);

+u16 GetEPDblBuf0Count(u8 /*bEpNum*/);

+u16 GetEPDblBuf1Count(u8 /*bEpNum*/);

+EP_DBUF_DIR GetEPDblBufDir(u8 /*bEpNum*/);

+void FreeUserBuffer(u8 bEpNum/*bEpNum*/, u8 bDir);

+u16 ToWord(u8, u8);

+u16 ByteSwap(u16);

+

+#if defined(__cplusplus)

+}

+#endif

+

+#endif /* __USB_REGS_H */

+

+/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/

diff --git a/libmaple/usb/usb_lib/usb_type.h b/libmaple/usb/usb_lib/usb_type.h
new file mode 100644
index 0000000..44b1f8c
--- /dev/null
+++ b/libmaple/usb/usb_lib/usb_type.h
@@ -0,0 +1,80 @@
+/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************

+* File Name          : usb_type.h

+* Author             : MCD Application Team

+* Version            : V2.2.1

+* Date               : 09/22/2008

+* Description        : Type definitions used by the USB Library

+********************************************************************************

+* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS

+* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.

+* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,

+* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE

+* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING

+* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.

+*******************************************************************************/

+

+/* Define to prevent recursive inclusion -------------------------------------*/

+#ifndef __USB_TYPE_H

+#define __USB_TYPE_H

+

+#if defined(__cplusplus)

+extern "C" {

+#endif

+

+/* Exported types ------------------------------------------------------------*/

+/* Exported constants --------------------------------------------------------*/

+#ifndef NULL

+#define NULL ((void *)0)

+#endif

+

+#ifndef __STM32F10x_TYPE_H

+

+typedef signed long      s32;

+typedef signed short     s16;

+typedef signed char      s8;

+

+typedef volatile signed long      vs32;

+typedef volatile signed short     vs16;

+typedef volatile signed char      vs8;

+

+typedef unsigned long       u32;

+typedef unsigned short      u16;

+typedef unsigned char       u8;

+

+typedef unsigned long  const    uc32;  /* Read Only */

+typedef unsigned short const    uc16;  /* Read Only */

+typedef unsigned char  const    uc8;   /* Read Only */

+

+typedef volatile unsigned long      vu32;

+typedef volatile unsigned short     vu16;

+typedef volatile unsigned char      vu8;

+

+typedef volatile unsigned long  const    vuc32;  /* Read Only */

+typedef volatile unsigned short const    vuc16;  /* Read Only */

+typedef volatile unsigned char  const    vuc8;   /* Read Only */

+

+

+typedef enum

+{

+  FALSE = 0, TRUE  = !FALSE

+}

+USB_Bool;

+

+typedef enum { RESET = 0, SET   = !RESET } FlagStatus, ITStatus;

+

+typedef enum { DISABLE = 0, ENABLE  = !DISABLE} FunctionalState;

+

+typedef enum { ERROR = 0, SUCCESS  = !ERROR} ErrorStatus;

+#endif

+

+/* Exported macro ------------------------------------------------------------*/

+/* Exported functions ------------------------------------------------------- */

+/* External variables --------------------------------------------------------*/

+

+#if defined(__cplusplus)

+}

+#endif

+

+#endif /* __USB_TYPE_H */

+

+/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/