finished the entire low level usb app for virtual com minus the precise handling of get/send data callbacks and toggle line state. completely undebugged for now.

1 files changed, 145 insertions, 0 deletions

diff --git a/core/usb/usb_hardware.h b/core/usb/usb_hardware.h
new file mode 100644
index 0000000..e60567d
--- /dev/null
+++ b/core/usb/usb_hardware.h
@@ -0,0 +1,145 @@
+/* *****************************************************************************
+ * 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 "stm32f10x_type.h"
+#include "cortexm3_macro.h"
+
+/* macro'd register and peripheral definitions */
+#define RCC   ((u32)0x40021000)
+#define FLASH ((u32)0x40022000)
+#define GPIOA ((u32)0x40010800)
+#define GPIOC ((u32)0x40011000)
+
+#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)
+
+
+/* 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;
+  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);
+
+#endif