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  1. /**
  2.   ******************************************************************************
  3.   * @file    usbd_cdc_if_template.c
  4.   * @author  MCD Application Team
  5.   * @brief   Generic media access Layer.
  6.   ******************************************************************************
  7.   * @attention
  8.   *
  9.   * <h2><center>&copy; Copyright (c) 2015 STMicroelectronics.
  10.   * All rights reserved.</center></h2>
  11.   *
  12.   * This software component is licensed by ST under Ultimate Liberty license
  13.   * SLA0044, the "License"; You may not use this file except in compliance with
  14.   * the License. You may obtain a copy of the License at:
  15.   *                      www.st.com/SLA0044
  16.   *
  17.   ******************************************************************************
  18.   */
  19.  
  20. /* BSPDependencies
  21. - "stm32xxxxx_{eval}{discovery}{nucleo_144}.c"
  22. - "stm32xxxxx_{eval}{discovery}_io.c"
  23. EndBSPDependencies */
  24.  
  25. /* Includes ------------------------------------------------------------------*/
  26. #include "usbd_cdc_if_template.h"
  27.  
  28. /** @addtogroup STM32_USB_DEVICE_LIBRARY
  29.   * @{
  30.   */
  31.  
  32.  
  33. /** @defgroup USBD_CDC
  34.   * @brief usbd core module
  35.   * @{
  36.   */
  37.  
  38. /** @defgroup USBD_CDC_Private_TypesDefinitions
  39.   * @{
  40.   */
  41. /**
  42.   * @}
  43.   */
  44.  
  45.  
  46. /** @defgroup USBD_CDC_Private_Defines
  47.   * @{
  48.   */
  49. /**
  50.   * @}
  51.   */
  52.  
  53.  
  54. /** @defgroup USBD_CDC_Private_Macros
  55.   * @{
  56.   */
  57.  
  58. /**
  59.   * @}
  60.   */
  61.  
  62.  
  63. /** @defgroup USBD_CDC_Private_FunctionPrototypes
  64.   * @{
  65.   */
  66.  
  67. static int8_t TEMPLATE_Init(void);
  68. static int8_t TEMPLATE_DeInit(void);
  69. static int8_t TEMPLATE_Control(uint8_t cmd, uint8_t *pbuf, uint16_t length);
  70. static int8_t TEMPLATE_Receive(uint8_t *pbuf, uint32_t *Len);
  71.  
  72. USBD_CDC_ItfTypeDef USBD_CDC_Template_fops =
  73. {
  74.   TEMPLATE_Init,
  75.   TEMPLATE_DeInit,
  76.   TEMPLATE_Control,
  77.   TEMPLATE_Receive
  78. };
  79.  
  80. USBD_CDC_LineCodingTypeDef linecoding =
  81. {
  82.   115200, /* baud rate*/
  83.   0x00,   /* stop bits-1*/
  84.   0x00,   /* parity - none*/
  85.   0x08    /* nb. of bits 8*/
  86. };
  87.  
  88. /* Private functions ---------------------------------------------------------*/
  89.  
  90. /**
  91.   * @brief  TEMPLATE_Init
  92.   *         Initializes the CDC media low layer
  93.   * @param  None
  94.   * @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
  95.   */
  96. static int8_t TEMPLATE_Init(void)
  97. {
  98.   /*
  99.      Add your initialization code here
  100.   */
  101.   return (0);
  102. }
  103.  
  104. /**
  105.   * @brief  TEMPLATE_DeInit
  106.   *         DeInitializes the CDC media low layer
  107.   * @param  None
  108.   * @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
  109.   */
  110. static int8_t TEMPLATE_DeInit(void)
  111. {
  112.   /*
  113.      Add your deinitialization code here
  114.   */
  115.   return (0);
  116. }
  117.  
  118.  
  119. /**
  120.   * @brief  TEMPLATE_Control
  121.   *         Manage the CDC class requests
  122.   * @param  Cmd: Command code
  123.   * @param  Buf: Buffer containing command data (request parameters)
  124.   * @param  Len: Number of data to be sent (in bytes)
  125.   * @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
  126.   */
  127. static int8_t TEMPLATE_Control(uint8_t cmd, uint8_t *pbuf, uint16_t length)
  128. {
  129.   switch (cmd)
  130.   {
  131.     case CDC_SEND_ENCAPSULATED_COMMAND:
  132.       /* Add your code here */
  133.       break;
  134.  
  135.     case CDC_GET_ENCAPSULATED_RESPONSE:
  136.       /* Add your code here */
  137.       break;
  138.  
  139.     case CDC_SET_COMM_FEATURE:
  140.       /* Add your code here */
  141.       break;
  142.  
  143.     case CDC_GET_COMM_FEATURE:
  144.       /* Add your code here */
  145.       break;
  146.  
  147.     case CDC_CLEAR_COMM_FEATURE:
  148.       /* Add your code here */
  149.       break;
  150.  
  151.     case CDC_SET_LINE_CODING:
  152.       linecoding.bitrate    = (uint32_t)(pbuf[0] | (pbuf[1] << 8) | \
  153.                                          (pbuf[2] << 16) | (pbuf[3] << 24));
  154.       linecoding.format     = pbuf[4];
  155.       linecoding.paritytype = pbuf[5];
  156.       linecoding.datatype   = pbuf[6];
  157.  
  158.       /* Add your code here */
  159.       break;
  160.  
  161.     case CDC_GET_LINE_CODING:
  162.       pbuf[0] = (uint8_t)(linecoding.bitrate);
  163.       pbuf[1] = (uint8_t)(linecoding.bitrate >> 8);
  164.       pbuf[2] = (uint8_t)(linecoding.bitrate >> 16);
  165.       pbuf[3] = (uint8_t)(linecoding.bitrate >> 24);
  166.       pbuf[4] = linecoding.format;
  167.       pbuf[5] = linecoding.paritytype;
  168.       pbuf[6] = linecoding.datatype;
  169.  
  170.       /* Add your code here */
  171.       break;
  172.  
  173.     case CDC_SET_CONTROL_LINE_STATE:
  174.       /* Add your code here */
  175.       break;
  176.  
  177.     case CDC_SEND_BREAK:
  178.       /* Add your code here */
  179.       break;
  180.  
  181.     default:
  182.       break;
  183.   }
  184.  
  185.   return (0);
  186. }
  187.  
  188. /**
  189.   * @brief  TEMPLATE_Receive
  190.   *         Data received over USB OUT endpoint are sent over CDC interface
  191.   *         through this function.
  192.   *
  193.   *         @note
  194.   *         This function will issue a NAK packet on any OUT packet received on
  195.   *         USB endpoint untill exiting this function. If you exit this function
  196.   *         before transfer is complete on CDC interface (ie. using DMA controller)
  197.   *         it will result in receiving more data while previous ones are still
  198.   *         not sent.
  199.   *
  200.   * @param  Buf: Buffer of data to be received
  201.   * @param  Len: Number of data received (in bytes)
  202.   * @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
  203.   */
  204. static int8_t TEMPLATE_Receive(uint8_t *Buf, uint32_t *Len)
  205. {
  206.  
  207.   return (0);
  208. }
  209.  
  210. /**
  211.   * @}
  212.   */
  213.  
  214. /**
  215.   * @}
  216.   */
  217.  
  218. /**
  219.   * @}
  220.   */
  221.  
  222. /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
  223.  
  224.