[1] | 1 | /* USER CODE BEGIN Header */
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| 2 | /**
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| 3 | ******************************************************************************
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| 4 | * @file : usbd_cdc_if.c
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| 5 | * @version : v1.0_Cube
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| 6 | * @brief : Usb device for Virtual Com Port.
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| 7 | ******************************************************************************
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| 8 | * @attention
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| 9 | *
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| 10 | * <h2><center>© Copyright (c) 2021 STMicroelectronics.
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| 11 | * All rights reserved.</center></h2>
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| 12 | *
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| 13 | * This software component is licensed by ST under Ultimate Liberty license
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| 14 | * SLA0044, the "License"; You may not use this file except in compliance with
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| 15 | * the License. You may obtain a copy of the License at:
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| 16 | * www.st.com/SLA0044
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| 17 | *
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| 18 | ******************************************************************************
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| 19 | */
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| 20 | /* USER CODE END Header */
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| 21 |
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| 22 | /* Includes ------------------------------------------------------------------*/
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| 23 | #include "usbd_cdc_if.h"
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| 24 |
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| 25 | /* USER CODE BEGIN INCLUDE */
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| 26 | #include "log_and_debug.h"
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| 27 | /* USER CODE END INCLUDE */
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| 28 |
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| 29 | /* Private typedef -----------------------------------------------------------*/
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| 30 | /* Private define ------------------------------------------------------------*/
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| 31 | /* Private macro -------------------------------------------------------------*/
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| 32 |
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| 33 | /* USER CODE BEGIN PV */
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| 34 | /* Private variables ---------------------------------------------------------*/
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| 35 |
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| 36 | /* USER CODE END PV */
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| 37 |
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| 38 | /** @addtogroup STM32_USB_OTG_DEVICE_LIBRARY
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| 39 | * @brief Usb device library.
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| 40 | * @{
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| 41 | */
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| 42 |
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| 43 | /** @addtogroup USBD_CDC_IF
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| 44 | * @{
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| 45 | */
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| 46 |
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| 47 | /** @defgroup USBD_CDC_IF_Private_TypesDefinitions USBD_CDC_IF_Private_TypesDefinitions
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| 48 | * @brief Private types.
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| 49 | * @{
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| 50 | */
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| 51 |
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| 52 | /* USER CODE BEGIN PRIVATE_TYPES */
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| 53 |
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| 54 | /* USER CODE END PRIVATE_TYPES */
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| 55 |
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| 56 | /**
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| 57 | * @}
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| 58 | */
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| 59 |
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| 60 | /** @defgroup USBD_CDC_IF_Private_Defines USBD_CDC_IF_Private_Defines
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| 61 | * @brief Private defines.
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| 62 | * @{
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| 63 | */
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| 64 |
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| 65 | /* USER CODE BEGIN PRIVATE_DEFINES */
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| 66 | /* USER CODE END PRIVATE_DEFINES */
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| 67 |
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| 68 | /**
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| 69 | * @}
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| 70 | */
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| 71 |
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| 72 | /** @defgroup USBD_CDC_IF_Private_Macros USBD_CDC_IF_Private_Macros
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| 73 | * @brief Private macros.
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| 74 | * @{
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| 75 | */
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| 76 |
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| 77 | /* USER CODE BEGIN PRIVATE_MACRO */
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| 78 |
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| 79 | /* USER CODE END PRIVATE_MACRO */
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| 80 |
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| 81 | /**
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| 82 | * @}
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| 83 | */
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| 84 |
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| 85 | /** @defgroup USBD_CDC_IF_Private_Variables USBD_CDC_IF_Private_Variables
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| 86 | * @brief Private variables.
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| 87 | * @{
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| 88 | */
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| 89 | /* Create buffer for reception and transmission */
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| 90 | /* It's up to user to redefine and/or remove those define */
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| 91 | /** Received data over USB are stored in this buffer */
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| 92 | uint8_t UserRxBufferFS[APP_RX_DATA_SIZE];
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| 93 |
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| 94 | /** Data to send over USB CDC are stored in this buffer */
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| 95 | uint8_t UserTxBufferFS[APP_TX_DATA_SIZE];
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| 96 |
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| 97 | /* USER CODE BEGIN PRIVATE_VARIABLES */
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| 98 |
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| 99 | /* USER CODE END PRIVATE_VARIABLES */
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| 100 |
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| 101 | /**
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| 102 | * @}
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| 103 | */
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| 104 |
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| 105 | /** @defgroup USBD_CDC_IF_Exported_Variables USBD_CDC_IF_Exported_Variables
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| 106 | * @brief Public variables.
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| 107 | * @{
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| 108 | */
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| 109 |
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| 110 | extern USBD_HandleTypeDef hUsbDeviceFS;
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| 111 |
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| 112 | /* USER CODE BEGIN EXPORTED_VARIABLES */
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| 113 |
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| 114 | /* USER CODE END EXPORTED_VARIABLES */
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| 115 |
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| 116 | /**
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| 117 | * @}
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| 118 | */
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| 119 |
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| 120 | /** @defgroup USBD_CDC_IF_Private_FunctionPrototypes USBD_CDC_IF_Private_FunctionPrototypes
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| 121 | * @brief Private functions declaration.
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| 122 | * @{
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| 123 | */
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| 124 |
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| 125 | static int8_t CDC_Init_FS(void);
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| 126 | static int8_t CDC_DeInit_FS(void);
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| 127 | static int8_t CDC_Control_FS(uint8_t cmd, uint8_t* pbuf, uint16_t length);
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| 128 | static int8_t CDC_Receive_FS(uint8_t* pbuf, uint32_t *Len);
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| 129 | static int8_t CDC_TransmitCplt_FS(uint8_t *pbuf, uint32_t *Len, uint8_t epnum);
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| 130 |
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| 131 | /* USER CODE BEGIN PRIVATE_FUNCTIONS_DECLARATION */
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| 132 |
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| 133 | /* USER CODE END PRIVATE_FUNCTIONS_DECLARATION */
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| 134 |
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| 135 | /**
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| 136 | * @}
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| 137 | */
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| 138 |
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| 139 | USBD_CDC_ItfTypeDef USBD_Interface_fops_FS =
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| 140 | {
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| 141 | CDC_Init_FS,
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| 142 | CDC_DeInit_FS,
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| 143 | CDC_Control_FS,
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| 144 | CDC_Receive_FS,
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| 145 | CDC_TransmitCplt_FS
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| 146 | };
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| 147 |
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| 148 | /* Private functions ---------------------------------------------------------*/
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| 149 | /**
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| 150 | * @brief Initializes the CDC media low layer over the FS USB IP
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| 151 | * @retval USBD_OK if all operations are OK else USBD_FAIL
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| 152 | */
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| 153 | static int8_t CDC_Init_FS(void)
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| 154 | {
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| 155 | /* USER CODE BEGIN 3 */
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| 156 | /* Set Application Buffers */
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| 157 | USBD_CDC_SetTxBuffer(&hUsbDeviceFS, UserTxBufferFS, 0);
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| 158 | USBD_CDC_SetRxBuffer(&hUsbDeviceFS, UserRxBufferFS);
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| 159 | return (USBD_OK);
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| 160 | /* USER CODE END 3 */
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| 161 | }
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| 162 |
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| 163 | /**
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| 164 | * @brief DeInitializes the CDC media low layer
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| 165 | * @retval USBD_OK if all operations are OK else USBD_FAIL
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| 166 | */
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| 167 | static int8_t CDC_DeInit_FS(void)
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| 168 | {
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| 169 | /* USER CODE BEGIN 4 */
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| 170 | return (USBD_OK);
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| 171 | /* USER CODE END 4 */
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| 172 | }
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| 173 |
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| 174 | /**
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| 175 | * @brief Manage the CDC class requests
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| 176 | * @param cmd: Command code
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| 177 | * @param pbuf: Buffer containing command data (request parameters)
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| 178 | * @param length: Number of data to be sent (in bytes)
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| 179 | * @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
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| 180 | */
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| 181 | static int8_t CDC_Control_FS(uint8_t cmd, uint8_t* pbuf, uint16_t length)
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| 182 | {
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| 183 | /* USER CODE BEGIN 5 */
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| 184 | switch(cmd)
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| 185 | {
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| 186 | case CDC_SEND_ENCAPSULATED_COMMAND:
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| 187 |
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| 188 | break;
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| 189 |
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| 190 | case CDC_GET_ENCAPSULATED_RESPONSE:
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| 191 |
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| 192 | break;
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| 193 |
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| 194 | case CDC_SET_COMM_FEATURE:
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| 195 |
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| 196 | break;
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| 197 |
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| 198 | case CDC_GET_COMM_FEATURE:
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| 199 |
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| 200 | break;
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| 201 |
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| 202 | case CDC_CLEAR_COMM_FEATURE:
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| 203 |
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| 204 | break;
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| 205 |
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| 206 | /*******************************************************************************/
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| 207 | /* Line Coding Structure */
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| 208 | /*-----------------------------------------------------------------------------*/
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| 209 | /* Offset | Field | Size | Value | Description */
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| 210 | /* 0 | dwDTERate | 4 | Number |Data terminal rate, in bits per second*/
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| 211 | /* 4 | bCharFormat | 1 | Number | Stop bits */
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| 212 | /* 0 - 1 Stop bit */
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| 213 | /* 1 - 1.5 Stop bits */
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| 214 | /* 2 - 2 Stop bits */
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| 215 | /* 5 | bParityType | 1 | Number | Parity */
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| 216 | /* 0 - None */
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| 217 | /* 1 - Odd */
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| 218 | /* 2 - Even */
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| 219 | /* 3 - Mark */
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| 220 | /* 4 - Space */
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| 221 | /* 6 | bDataBits | 1 | Number Data bits (5, 6, 7, 8 or 16). */
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| 222 | /*******************************************************************************/
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| 223 | case CDC_SET_LINE_CODING:
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| 224 |
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| 225 | break;
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| 226 |
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| 227 | case CDC_GET_LINE_CODING:
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| 228 |
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| 229 | break;
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| 230 |
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| 231 | case CDC_SET_CONTROL_LINE_STATE:
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| 232 |
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| 233 | break;
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| 234 |
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| 235 | case CDC_SEND_BREAK:
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| 236 |
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| 237 | break;
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| 238 |
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| 239 | default:
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| 240 | break;
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| 241 | }
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| 242 |
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| 243 | return (USBD_OK);
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| 244 | /* USER CODE END 5 */
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| 245 | }
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| 246 |
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| 247 | #include "log_and_debug.h"
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| 248 | /**
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| 249 | * @brief Data received over USB OUT endpoint are sent over CDC interface
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| 250 | * through this function.
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| 251 | *
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| 252 | * @note
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| 253 | * This function will issue a NAK packet on any OUT packet received on
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| 254 | * USB endpoint until exiting this function. If you exit this function
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| 255 | * before transfer is complete on CDC interface (ie. using DMA controller)
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| 256 | * it will result in receiving more data while previous ones are still
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| 257 | * not sent.
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| 258 | *
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| 259 | * @param Buf: Buffer of data to be received
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| 260 | * @param Len: Number of data received (in bytes)
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| 261 | * @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
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| 262 | */
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| 263 | static int8_t CDC_Receive_FS(uint8_t* Buf, uint32_t *Len)
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| 264 | {
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| 265 | /* USER CODE BEGIN 6 */
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| 266 |
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| 267 | //USBD_CDC_SetRxBuffer(&hUsbDeviceFS, &Buf[0]);
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| 268 | debug_receive(Buf, Len);
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| 269 | USBD_CDC_ReceivePacket(&hUsbDeviceFS);
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| 270 | return (USBD_OK);
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| 271 | /* USER CODE END 6 */
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| 272 | }
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| 273 |
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| 274 | /**
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| 275 | * @brief CDC_Transmit_FS
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| 276 | * Data to send over USB IN endpoint are sent over CDC interface
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| 277 | * through this function.
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| 278 | * @note
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| 279 | *
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| 280 | *
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| 281 | * @param Buf: Buffer of data to be sent
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| 282 | * @param Len: Number of data to be sent (in bytes)
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| 283 | * @retval USBD_OK if all operations are OK else USBD_FAIL or USBD_BUSY
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| 284 | */
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| 285 | uint8_t CDC_Transmit_FS(uint8_t* Buf, uint16_t Len)
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| 286 | {
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| 287 | uint8_t result = USBD_OK;
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| 288 | /* USER CODE BEGIN 7 */
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| 289 | USBD_CDC_HandleTypeDef *hcdc = (USBD_CDC_HandleTypeDef*)hUsbDeviceFS.pClassData;
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| 290 | if (hcdc->TxState != 0){
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| 291 | return USBD_BUSY;
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| 292 | }
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| 293 | USBD_CDC_SetTxBuffer(&hUsbDeviceFS, Buf, Len);
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| 294 | result = USBD_CDC_TransmitPacket(&hUsbDeviceFS);
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| 295 | /* USER CODE END 7 */
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| 296 | return result;
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| 297 | }
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| 298 |
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| 299 | /**
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| 300 | * @brief CDC_TransmitCplt_FS
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| 301 | * Data transmited callback
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| 302 | *
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| 303 | * @note
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| 304 | * This function is IN transfer complete callback used to inform user that
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| 305 | * the submitted Data is successfully sent over USB.
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| 306 | *
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| 307 | * @param Buf: Buffer of data to be received
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| 308 | * @param Len: Number of data received (in bytes)
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| 309 | * @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
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| 310 | */
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| 311 | static int8_t CDC_TransmitCplt_FS(uint8_t *Buf, uint32_t *Len, uint8_t epnum)
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| 312 | {
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| 313 | uint8_t result = USBD_OK;
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| 314 | /* USER CODE BEGIN 13 */
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| 315 | UNUSED(Buf);
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| 316 | UNUSED(Len);
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| 317 | UNUSED(epnum);
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| 318 | /* USER CODE END 13 */
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| 319 | return result;
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| 320 | }
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| 321 |
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| 322 | /* USER CODE BEGIN PRIVATE_FUNCTIONS_IMPLEMENTATION */
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| 323 |
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| 324 | /* USER CODE END PRIVATE_FUNCTIONS_IMPLEMENTATION */
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| 325 |
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| 326 | /**
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| 327 | * @}
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| 328 | */
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| 329 |
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| 330 | /**
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| 331 | * @}
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| 332 | */
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| 333 |
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| 334 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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