src/main/vcp/hw_config.c

   1 /**
   2  ******************************************************************************
   3  * @file    hw_config.c
   4  * @author  MCD Application Team
   5  * @version V4.0.0
   6  * @date    21-January-2013
   7  * @brief   Hardware Configuration & Setup
   8  ******************************************************************************
   9  * @attention
  10  *
  11  * <h2><center>&copy; COPYRIGHT 2013 STMicroelectronics</center></h2>
  12  *
  13  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
  14  * You may not use this file except in compliance with the License.
  15  * You may obtain a copy of the License at:
  16  *
  17  *        http://www.st.com/software_license_agreement_liberty_v2
  18  *
  19  * Unless required by applicable law or agreed to in writing, software
  20  * distributed under the License is distributed on an "AS IS" BASIS,
  21  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  22  * See the License for the specific language governing permissions and
  23  * limitations under the License.
  24  *
  25  ******************************************************************************
  26  */
  27
  28 /* Includes ------------------------------------------------------------------*/
  29
  30 #include "stm32_it.h"
  31 #include "platform.h"
  32 #include "usb_lib.h"
  33 #include "usb_prop.h"
  34 #include "usb_desc.h"
  35 #include "hw_config.h"
  36 #include "usb_pwr.h"
  37
  38 #include <stdbool.h>
  39 #include "drivers/time.h"
  40 #include "drivers/nvic.h"
  41
  42 #include "common/utils.h"
  43
  44
  45 /* Private typedef -----------------------------------------------------------*/
  46 /* Private define ------------------------------------------------------------*/
  47 /* Private macro -------------------------------------------------------------*/
  48 /* Private variables ---------------------------------------------------------*/
  49 ErrorStatus HSEStartUpStatus;
  50 EXTI_InitTypeDef EXTI_InitStructure;
  51 __IO uint32_t packetSent;                                     // HJI
  52 extern __IO uint32_t receiveLength;                          // HJI
  53
  54 uint8_t receiveBuffer[64];                                   // HJI
  55 uint32_t sendLength;                                          // HJI
  56 static void IntToUnicode(uint32_t value, uint8_t *pbuf, uint8_t len);
  57 /* Extern variables ----------------------------------------------------------*/
  58
  59 /* Private function prototypes -----------------------------------------------*/
  60 /* Private functions ---------------------------------------------------------*/
  61 /*******************************************************************************
  62  * Function Name  : Set_System
  63  * Description    : Configures Main system clocks & power
  64  * Input          : None.
  65  * Return         : None.
  66  *******************************************************************************/
  67 void Set_System(void)
  68 {
  69 #if !defined(STM32L1XX_MD) && !defined(STM32L1XX_HD) && !defined(STM32L1XX_MD_PLUS)
  70     GPIO_InitTypeDef GPIO_InitStructure;
  71 #endif /* STM32L1XX_MD && STM32L1XX_XD */
  72
  73 #if defined(USB_USE_EXTERNAL_PULLUP)
  74     GPIO_InitTypeDef GPIO_InitStructure;
  75 #endif /* USB_USE_EXTERNAL_PULLUP */
  76
  77     /*!< At this stage the microcontroller clock setting is already configured,
  78      this is done through SystemInit() function which is called from startup
  79      file (startup_stm32f10x_xx.s) before to branch to application main.
  80      To reconfigure the default setting of SystemInit() function, refer to
  81      system_stm32f10x.c file
  82      */
  83 #if defined(STM32L1XX_MD) || defined(STM32L1XX_HD)|| defined(STM32L1XX_MD_PLUS) || defined(STM32F37X) || defined(STM32F303xC)
  84     /* Enable the SYSCFG module clock */
  85     RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
  86 #endif /* STM32L1XX_XD */
  87
  88     /*Pull down PA12 to create USB Disconnect Pulse*/     // HJI
  89 #if defined(STM32F303xC)                                  // HJI
  90     RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);   // HJI
  91
  92     GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;            // HJI
  93     GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;     // HJI
  94     GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;         // HJI
  95     GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;        // HJI
  96     GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;      // HJI
  97 #else
  98     RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); // HJI
  99
 100     GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;            // HJI
 101     GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;     // HJI
 102     GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_OD;      // HJI
 103 #endif
 104
 105     GPIO_Init(GPIOA, &GPIO_InitStructure);                // HJI
 106
 107     GPIO_ResetBits(GPIOA, GPIO_Pin_12);                   // HJI
 108
 109     delay(200);                                           // HJI
 110
 111     GPIO_SetBits(GPIOA, GPIO_Pin_12);                     // HJI
 112
 113 #if defined(STM32F37X) || defined(STM32F303xC)
 114
 115     /*Set PA11,12 as IN - USB_DM,DP*/
 116     RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
 117     GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11 | GPIO_Pin_12;
 118     GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
 119     GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
 120     GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
 121     GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
 122     GPIO_Init(GPIOA, &GPIO_InitStructure);
 123
 124     /*SET PA11,12 for USB: USB_DM,DP*/
 125     GPIO_PinAFConfig(GPIOA, GPIO_PinSource11, GPIO_AF_14);
 126     GPIO_PinAFConfig(GPIOA, GPIO_PinSource12, GPIO_AF_14);
 127
 128 #endif /* STM32F37X  && STM32F303xC)*/
 129
 130     /* Configure the EXTI line 18 connected internally to the USB IP */
 131     EXTI_ClearITPendingBit(EXTI_Line18);
 132     EXTI_InitStructure.EXTI_Line = EXTI_Line18;
 133     EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
 134     EXTI_InitStructure.EXTI_LineCmd = ENABLE;
 135     EXTI_Init(&EXTI_InitStructure);
 136 }
 137
 138 /*******************************************************************************
 139  * Function Name  : Set_USBClock
 140  * Description    : Configures USB Clock input (48MHz)
 141  * Input          : None.
 142  * Return         : None.
 143  *******************************************************************************/
 144 void Set_USBClock(void)
 145 {
 146     RCC_ClocksTypeDef RCC_Clocks;
 147     RCC_GetClocksFreq(&RCC_Clocks);
 148
 149     /* Select USBCLK source */
 150     RCC_USBCLKConfig(RCC_Clocks.SYSCLK_Frequency == 72000000 ? RCC_USBCLKSource_PLLCLK_1Div5 : RCC_USBCLKSource_PLLCLK_Div1);
 151
 152     /* Enable the USB clock */
 153     RCC_APB1PeriphClockCmd(RCC_APB1Periph_USB, ENABLE);
 154 }
 155
 156 /*******************************************************************************
 157  * Function Name  : Enter_LowPowerMode
 158  * Description    : Power-off system clocks and power while entering suspend mode
 159  * Input          : None.
 160  * Return         : None.
 161  *******************************************************************************/
 162 void Enter_LowPowerMode(void)
 163 {
 164     /* Set the device state to suspend */
 165     bDeviceState = SUSPENDED;
 166 }
 167
 168 /*******************************************************************************
 169  * Function Name  : Leave_LowPowerMode
 170  * Description    : Restores system clocks and power while exiting suspend mode
 171  * Input          : None.
 172  * Return         : None.
 173  *******************************************************************************/
 174 void Leave_LowPowerMode(void)
 175 {
 176     DEVICE_INFO *pInfo = &Device_Info;
 177
 178     /* Set the device state to the correct state */
 179     if (pInfo->Current_Configuration != 0) {
 180         /* Device configured */
 181         bDeviceState = CONFIGURED;
 182     } else {
 183         bDeviceState = ATTACHED;
 184     }
 185     /*Enable SystemCoreClock*/
 186     SystemInit();
 187 }
 188
 189 /*******************************************************************************
 190  * Function Name  : USB_Interrupts_Config
 191  * Description    : Configures the USB interrupts
 192  * Input          : None.
 193  * Return         : None.
 194  *******************************************************************************/
 195 void USB_Interrupts_Config(void)
 196 {
 197     NVIC_SetPriority(USB_LP_CAN1_RX0_IRQn, NVIC_PRIO_USB);
 198     NVIC_EnableIRQ(USB_LP_CAN1_RX0_IRQn);
 199
 200     NVIC_SetPriority(USBWakeUp_IRQn, NVIC_PRIO_USB);
 201     NVIC_EnableIRQ(USBWakeUp_IRQn);
 202 }
 203
 204 /*******************************************************************************
 205  * Function Name  : USB_Cable_Config
 206  * Description    : Software Connection/Disconnection of USB Cable
 207  * Input          : None.
 208  * Return         : Status
 209  *******************************************************************************/
 210 void USB_Cable_Config(FunctionalState NewState)
 211 {
 212     UNUSED(NewState);
 213 }
 214
 215 /*******************************************************************************
 216  * Function Name  : Get_SerialNum.
 217  * Description    : Create the serial number string descriptor.
 218  * Input          : None.
 219  * Output         : None.
 220  * Return         : None.
 221  *******************************************************************************/
 222 void Get_SerialNum(void)
 223 {
 224     uint32_t Device_Serial0, Device_Serial1, Device_Serial2;
 225
 226     Device_Serial0 = *(uint32_t*)ID1;
 227     Device_Serial1 = *(uint32_t*)ID2;
 228     Device_Serial2 = *(uint32_t*)ID3;
 229
 230     Device_Serial0 += Device_Serial2;
 231
 232     if (Device_Serial0 != 0) {
 233         IntToUnicode(Device_Serial0, &Virtual_Com_Port_StringSerial[2], 8);
 234         IntToUnicode(Device_Serial1, &Virtual_Com_Port_StringSerial[18], 4);
 235     }
 236 }
 237
 238 /*******************************************************************************
 239  * Function Name  : HexToChar.
 240  * Description    : Convert Hex 32Bits value into char.
 241  * Input          : None.
 242  * Output         : None.
 243  * Return         : None.
 244  *******************************************************************************/
 245 static void IntToUnicode(uint32_t value, uint8_t *pbuf, uint8_t len)
 246 {
 247     uint8_t idx = 0;
 248
 249     for (idx = 0; idx < len; idx++) {
 250         if (((value >> 28)) < 0xA) {
 251             pbuf[2 * idx] = (value >> 28) + '0';
 252         } else {
 253             pbuf[2 * idx] = (value >> 28) + 'A' - 10;
 254         }
 255
 256         value = value << 4;
 257
 258         pbuf[2 * idx + 1] = 0;
 259     }
 260 }
 261
 262 /*******************************************************************************
 263  * Function Name  : Send DATA .
 264  * Description    : send the data received from the STM32 to the PC through USB
 265  * Input          : None.
 266  * Output         : None.
 267  * Return         : None.
 268  *******************************************************************************/
 269 uint32_t CDC_Send_DATA(const uint8_t *ptrBuffer, uint32_t sendLength)
 270 {
 271     /* Last transmission hasn't finished, abort */
 272     if (packetSent) {
 273         return 0;
 274     }
 275
 276     // We can only put 64 bytes in the buffer
 277     if (sendLength > 64 / 2) {
 278         sendLength = 64 / 2;
 279     }
 280
 281     // Try to load some bytes if we can
 282     if (sendLength) {
 283         UserToPMABufferCopy(ptrBuffer, ENDP1_TXADDR, sendLength);
 284         SetEPTxCount(ENDP1, sendLength);
 285         packetSent += sendLength;
 286         SetEPTxValid(ENDP1);
 287     }
 288
 289     return sendLength;
 290 }
 291
 292 uint32_t CDC_Send_FreeBytes(void)
 293 {
 294     /* this driver is blocking, so the buffer is unlimited */
 295     return 255;
 296 }
 297
 298 /*******************************************************************************
 299  * Function Name  : Receive DATA .
 300  * Description    : receive the data from the PC to STM32 and send it through USB
 301  * Input          : None.
 302  * Output         : None.
 303  * Return         : None.
 304  *******************************************************************************/
 305 uint32_t CDC_Receive_DATA(uint8_t* recvBuf, uint32_t len)
 306 {
 307     static uint8_t offset = 0;
 308     uint8_t i;
 309
 310     if (len > receiveLength) {
 311         len = receiveLength;
 312     }
 313
 314     for (i = 0; i < len; i++) {
 315         recvBuf[i] = (uint8_t)(receiveBuffer[i + offset]);
 316     }
 317
 318     receiveLength -= len;
 319     offset += len;
 320
 321     /* re-enable the rx endpoint which we had set to receive 0 bytes */
 322     if (receiveLength == 0) {
 323         SetEPRxCount(ENDP3, 64);
 324         SetEPRxStatus(ENDP3, EP_RX_VALID);
 325         offset = 0;
 326     }
 327
 328     return len;
 329 }
 330
 331 uint32_t CDC_Receive_BytesAvailable(void)
 332 {
 333     return receiveLength;
 334 }
 335
 336 /*******************************************************************************
 337  * Function Name  : usbIsConfigured.
 338  * Description    : Determines if USB VCP is configured or not
 339  * Input          : None.
 340  * Output         : None.
 341  * Return         : True if configured.
 342  *******************************************************************************/
 343 uint8_t usbIsConfigured(void)
 344 {
 345     return (bDeviceState == CONFIGURED);
 346 }
 347
 348 /*******************************************************************************
 349  * Function Name  : usbIsConnected.
 350  * Description    : Determines if USB VCP is connected ot not
 351  * Input          : None.
 352  * Output         : None.
 353  * Return         : True if connected.
 354  *******************************************************************************/
 355 uint8_t usbIsConnected(void)
 356 {
 357     return (bDeviceState != UNCONNECTED);
 358 }
 359
 360
 361 /*******************************************************************************
 362  * Function Name  : CDC_BaudRate.
 363  * Description    : Get the current baud rate
 364  * Input          : None.
 365  * Output         : None.
 366  * Return         : Baud rate in bps
 367  *******************************************************************************/
 368 uint32_t CDC_BaudRate(void)
 369 {
 370     return Virtual_Com_Port_GetBaudRate();
 371 }
 372
 373 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/