src/platform/STM32/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/system.h"
  40 #include "drivers/usb_io.h"
  41 #include "drivers/nvic.h"
  42
  43 #include "common/utils.h"
  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 static void (*ctrlLineStateCb)(void *context, uint16_t ctrlLineState);
  58 static void *ctrlLineStateCbContext;
  59 static void (*baudRateCb)(void *context, uint32_t baud);
  60 static void *baudRateCbContext;
  61
  62 /* Extern variables ----------------------------------------------------------*/
  63
  64 /* Private function prototypes -----------------------------------------------*/
  65 /* Private functions ---------------------------------------------------------*/
  66 /*******************************************************************************
  67  * Function Name  : Set_System
  68  * Description    : Configures Main system clocks & power
  69  * Input          : None.
  70  * Return         : None.
  71  *******************************************************************************/
  72 void Set_System(void)
  73 {
  74 #if !defined(STM32L1XX_MD) && !defined(STM32L1XX_HD) && !defined(STM32L1XX_MD_PLUS)
  75     GPIO_InitTypeDef GPIO_InitStructure;
  76 #endif /* STM32L1XX_MD && STM32L1XX_XD */
  77
  78 #if defined(USB_USE_EXTERNAL_PULLUP)
  79     GPIO_InitTypeDef GPIO_InitStructure;
  80 #endif /* USB_USE_EXTERNAL_PULLUP */
  81
  82     /*!< At this stage the microcontroller clock setting is already configured,
  83      this is done through SystemInit() function which is called from startup
  84      file (startup_stm32f10x_xx.s) before to branch to application main.
  85      To reconfigure the default setting of SystemInit() function, refer to
  86      system_stm32f10x.c file
  87      */
  88 #if defined(STM32L1XX_MD) || defined(STM32L1XX_HD)|| defined(STM32L1XX_MD_PLUS) || defined(STM32F37X) || defined(STM32F303xC)
  89     /* Enable the SYSCFG module clock */
  90     RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
  91 #endif /* STM32L1XX_XD */
  92
  93     usbGenerateDisconnectPulse();
  94
  95 #if defined(STM32F37X) || defined(STM32F303xC)
  96
  97     /*Set PA11,12 as IN - USB_DM,DP*/
  98     RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
  99     GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11 | GPIO_Pin_12;
 100     GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
 101     GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
 102     GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
 103     GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
 104     GPIO_Init(GPIOA, &GPIO_InitStructure);
 105
 106     /*SET PA11,12 for USB: USB_DM,DP*/
 107     GPIO_PinAFConfig(GPIOA, GPIO_PinSource11, GPIO_AF_14);
 108     GPIO_PinAFConfig(GPIOA, GPIO_PinSource12, GPIO_AF_14);
 109
 110 #endif /* STM32F37X  && STM32F303xC)*/
 111
 112     // Initialise callbacks
 113     ctrlLineStateCb = NULL;
 114     baudRateCb = NULL;
 115
 116     /* Configure the EXTI line 18 connected internally to the USB IP */
 117     EXTI_ClearITPendingBit(EXTI_Line18);
 118     EXTI_InitStructure.EXTI_Line = EXTI_Line18;
 119     EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
 120     EXTI_InitStructure.EXTI_LineCmd = ENABLE;
 121     EXTI_Init(&EXTI_InitStructure);
 122 }
 123
 124 /*******************************************************************************
 125  * Function Name  : Set_USBClock
 126  * Description    : Configures USB Clock input (48MHz)
 127  * Input          : None.
 128  * Return         : None.
 129  *******************************************************************************/
 130 void Set_USBClock(void)
 131 {
 132     /* Select USBCLK source */
 133     RCC_USBCLKConfig(RCC_USBCLKSource_PLLCLK_1Div5);
 134
 135     /* Enable the USB clock */
 136     RCC_APB1PeriphClockCmd(RCC_APB1Periph_USB, ENABLE);
 137 }
 138
 139 /*******************************************************************************
 140  * Function Name  : Enter_LowPowerMode
 141  * Description    : Power-off system clocks and power while entering suspend mode
 142  * Input          : None.
 143  * Return         : None.
 144  *******************************************************************************/
 145 void Enter_LowPowerMode(void)
 146 {
 147     /* Set the device state to suspend */
 148     bDeviceState = SUSPENDED;
 149 }
 150
 151 /*******************************************************************************
 152  * Function Name  : Leave_LowPowerMode
 153  * Description    : Restores system clocks and power while exiting suspend mode
 154  * Input          : None.
 155  * Return         : None.
 156  *******************************************************************************/
 157 void Leave_LowPowerMode(void)
 158 {
 159     DEVICE_INFO *pInfo = &Device_Info;
 160
 161     /* Set the device state to the correct state */
 162     if (pInfo->Current_Configuration != 0) {
 163         /* Device configured */
 164         bDeviceState = CONFIGURED;
 165     } else {
 166         bDeviceState = ATTACHED;
 167     }
 168     /*Enable SystemCoreClock*/
 169     SystemInit();
 170 }
 171
 172 /*******************************************************************************
 173  * Function Name  : USB_Interrupts_Config
 174  * Description    : Configures the USB interrupts
 175  * Input          : None.
 176  * Return         : None.
 177  *******************************************************************************/
 178 void USB_Interrupts_Config(void)
 179 {
 180     NVIC_InitTypeDef NVIC_InitStructure;
 181
 182     /* 2 bit for pre-emption priority, 2 bits for subpriority */
 183     NVIC_PriorityGroupConfig(NVIC_PRIORITY_GROUPING);     // is this really neccesary?
 184
 185     /* Enable the USB interrupt */
 186     NVIC_InitStructure.NVIC_IRQChannel = USB_LP_CAN1_RX0_IRQn;
 187     NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = NVIC_PRIORITY_BASE(NVIC_PRIO_USB);
 188     NVIC_InitStructure.NVIC_IRQChannelSubPriority = NVIC_PRIORITY_SUB(NVIC_PRIO_USB);
 189     NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
 190     NVIC_Init(&NVIC_InitStructure);
 191
 192     /* Enable the USB Wake-up interrupt */
 193     NVIC_InitStructure.NVIC_IRQChannel = USBWakeUp_IRQn;
 194     NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = NVIC_PRIORITY_BASE(NVIC_PRIO_USB_WUP);
 195     NVIC_InitStructure.NVIC_IRQChannelSubPriority = NVIC_PRIORITY_SUB(NVIC_PRIO_USB_WUP);
 196     NVIC_Init(&NVIC_InitStructure);
 197 }
 198
 199 /*******************************************************************************
 200  * Function Name  : USB_Cable_Config
 201  * Description    : Software Connection/Disconnection of USB Cable
 202  * Input          : None.
 203  * Return         : Status
 204  *******************************************************************************/
 205 void USB_Cable_Config(FunctionalState NewState)
 206 {
 207     UNUSED(NewState);
 208 }
 209
 210 /*******************************************************************************
 211  * Function Name  : Get_SerialNum.
 212  * Description    : Create the serial number string descriptor.
 213  * Input          : None.
 214  * Output         : None.
 215  * Return         : None.
 216  *******************************************************************************/
 217 void Get_SerialNum(void)
 218 {
 219     uint32_t Device_Serial0, Device_Serial1, Device_Serial2;
 220
 221     Device_Serial0 = *(uint32_t*)ID1;
 222     Device_Serial1 = *(uint32_t*)ID2;
 223     Device_Serial2 = *(uint32_t*)ID3;
 224
 225     Device_Serial0 += Device_Serial2;
 226
 227     if (Device_Serial0 != 0) {
 228         IntToUnicode(Device_Serial0, &Virtual_Com_Port_StringSerial[2], 8);
 229         IntToUnicode(Device_Serial1, &Virtual_Com_Port_StringSerial[18], 4);
 230     }
 231 }
 232
 233 /*******************************************************************************
 234  * Function Name  : HexToChar.
 235  * Description    : Convert Hex 32Bits value into char.
 236  * Input          : None.
 237  * Output         : None.
 238  * Return         : None.
 239  *******************************************************************************/
 240 static void IntToUnicode(uint32_t value, uint8_t *pbuf, uint8_t len)
 241 {
 242     uint8_t idx = 0;
 243
 244     for (idx = 0; idx < len; idx++) {
 245         if (((value >> 28)) < 0xA) {
 246             pbuf[2 * idx] = (value >> 28) + '0';
 247         } else {
 248             pbuf[2 * idx] = (value >> 28) + 'A' - 10;
 249         }
 250
 251         value = value << 4;
 252
 253         pbuf[2 * idx + 1] = 0;
 254     }
 255 }
 256
 257 /*******************************************************************************
 258  * Function Name  : Send DATA .
 259  * Description    : send the data received from the STM32 to the PC through USB
 260  * Input          : None.
 261  * Output         : None.
 262  * Return         : None.
 263  *******************************************************************************/
 264 uint32_t CDC_Send_DATA(const uint8_t *ptrBuffer, uint32_t sendLength)
 265 {
 266     /* Last transmission hasn't finished, abort */
 267     if (packetSent) {
 268         return 0;
 269     }
 270
 271     // We can only put 64 bytes in the buffer
 272     if (sendLength > 64 / 2) {
 273         sendLength = 64 / 2;
 274     }
 275
 276     // Try to load some bytes if we can
 277     if (sendLength) {
 278         UserToPMABufferCopy(ptrBuffer, ENDP1_TXADDR, sendLength);
 279         SetEPTxCount(ENDP1, sendLength);
 280         packetSent += sendLength;
 281         SetEPTxValid(ENDP1);
 282     }
 283
 284     return sendLength;
 285 }
 286
 287 uint32_t CDC_Send_FreeBytes(void)
 288 {
 289     /* this driver is blocking, so the buffer is unlimited */
 290     return 255;
 291 }
 292
 293 /*******************************************************************************
 294  * Function Name  : Receive DATA .
 295  * Description    : receive the data from the PC to STM32 and send it through USB
 296  * Input          : None.
 297  * Output         : None.
 298  * Return         : None.
 299  *******************************************************************************/
 300 uint32_t CDC_Receive_DATA(uint8_t* recvBuf, uint32_t len)
 301 {
 302     static uint8_t offset = 0;
 303     uint8_t i;
 304
 305     if (len > receiveLength) {
 306         len = receiveLength;
 307     }
 308
 309     for (i = 0; i < len; i++) {
 310         recvBuf[i] = (uint8_t)(receiveBuffer[i + offset]);
 311     }
 312
 313     receiveLength -= len;
 314     offset += len;
 315
 316     /* re-enable the rx endpoint which we had set to receive 0 bytes */
 317     if (receiveLength == 0) {
 318         SetEPRxCount(ENDP3, 64);
 319         SetEPRxStatus(ENDP3, EP_RX_VALID);
 320         offset = 0;
 321     }
 322
 323     return len;
 324 }
 325
 326 uint32_t CDC_Receive_BytesAvailable(void)
 327 {
 328     return receiveLength;
 329 }
 330
 331 /*******************************************************************************
 332  * Function Name  : usbIsConfigured.
 333  * Description    : Determines if USB VCP is configured or not
 334  * Input          : None.
 335  * Output         : None.
 336  * Return         : True if configured.
 337  *******************************************************************************/
 338 uint8_t usbIsConfigured(void)
 339 {
 340     return (bDeviceState == CONFIGURED);
 341 }
 342
 343 /*******************************************************************************
 344  * Function Name  : usbIsConnected.
 345  * Description    : Determines if USB VCP is connected ot not
 346  * Input          : None.
 347  * Output         : None.
 348  * Return         : True if connected.
 349  *******************************************************************************/
 350 uint8_t usbIsConnected(void)
 351 {
 352     return (bDeviceState != UNCONNECTED);
 353 }
 354
 355 /*******************************************************************************
 356  * Function Name  : CDC_BaudRate.
 357  * Description    : Get the current baud rate
 358  * Input          : None.
 359  * Output         : None.
 360  * Return         : Baud rate in bps
 361  *******************************************************************************/
 362 uint32_t CDC_BaudRate(void)
 363 {
 364     return Virtual_Com_Port_GetBaudRate();
 365 }
 366
 367 /*******************************************************************************
 368  * Function Name  : CDC_SetBaudRateCb
 369  * Description    : Set a callback to call when baud rate changes
 370  * Input          : callback function and context.
 371  * Output         : None.
 372  * Return         : None.
 373  *******************************************************************************/
 374 void CDC_SetBaudRateCb(void (*cb)(void *context, uint32_t baud), void *context)
 375 {
 376     baudRateCbContext = context;
 377     baudRateCb = cb;
 378 }
 379
 380 /*******************************************************************************
 381  * Function Name  : CDC_SetCtrlLineStateCb
 382  * Description    : Set a callback to call when control line state changes
 383  * Input          : callback function and context.
 384  * Output         : None.
 385  * Return         : None.
 386  *******************************************************************************/
 387 void CDC_SetCtrlLineStateCb(void (*cb)(void *context, uint16_t ctrlLineState), void *context)
 388 {
 389     ctrlLineStateCbContext = context;
 390     ctrlLineStateCb = cb;
 391 }
 392
 393 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/