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author | AJM <poslathian@poslathian.(none)> | 2010-05-20 22:47:59 -0400 |
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committer | AJM <poslathian@poslathian.(none)> | 2010-05-20 22:47:59 -0400 |
commit | dcc4c457f0cad15b9d60e8fc3afa913bacacdbc6 (patch) | |
tree | ad805c404ec1414a330aad74fb833137a44ad136 /core/usb/usb.c | |
parent | 3d0c8c9b374a9a2e3e9fb296cf8a89239106eea2 (diff) | |
download | librambutan-dcc4c457f0cad15b9d60e8fc3afa913bacacdbc6.tar.gz librambutan-dcc4c457f0cad15b9d60e8fc3afa913bacacdbc6.zip |
moved the usb directory to its proper home in ./libmaple
also, removed some old usb file, bootVect.h, which setup the static table for the runtime usb lib that no longer exists and was provided by the bootloader rev 1
Diffstat (limited to 'core/usb/usb.c')
-rw-r--r-- | core/usb/usb.c | 470 |
1 files changed, 0 insertions, 470 deletions
diff --git a/core/usb/usb.c b/core/usb/usb.c deleted file mode 100644 index bbea77d..0000000 --- a/core/usb/usb.c +++ /dev/null @@ -1,470 +0,0 @@ -/* ***************************************************************************** - * 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); -} |