You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
306 lines
8.1 KiB
306 lines
8.1 KiB
/* USER CODE BEGIN Header */
|
|
/**
|
|
******************************************************************************
|
|
* @file : usbd_cdc_if.c
|
|
* @version : v2.0_Cube
|
|
* @brief : Usb device for Virtual Com Port.
|
|
******************************************************************************
|
|
* @attention
|
|
*
|
|
* Copyright (c) 2022 STMicroelectronics.
|
|
* All rights reserved.
|
|
*
|
|
* This software is licensed under terms that can be found in the LICENSE file
|
|
* in the root directory of this software component.
|
|
* If no LICENSE file comes with this software, it is provided AS-IS.
|
|
*
|
|
******************************************************************************
|
|
*/
|
|
/* USER CODE END Header */
|
|
|
|
/* Includes ------------------------------------------------------------------*/
|
|
#include "usbd_cdc_if.h"
|
|
|
|
/* USER CODE BEGIN INCLUDE */
|
|
|
|
/* USER CODE END INCLUDE */
|
|
|
|
/* Private typedef -----------------------------------------------------------*/
|
|
/* Private define ------------------------------------------------------------*/
|
|
/* Private macro -------------------------------------------------------------*/
|
|
|
|
/* USER CODE BEGIN PV */
|
|
/* Private variables ---------------------------------------------------------*/
|
|
|
|
/* USER CODE END PV */
|
|
|
|
/** @addtogroup STM32_USB_OTG_DEVICE_LIBRARY
|
|
* @brief Usb device library.
|
|
* @{
|
|
*/
|
|
|
|
/** @addtogroup USBD_CDC_IF
|
|
* @{
|
|
*/
|
|
|
|
/** @defgroup USBD_CDC_IF_Private_TypesDefinitions USBD_CDC_IF_Private_TypesDefinitions
|
|
* @brief Private types.
|
|
* @{
|
|
*/
|
|
|
|
/* USER CODE BEGIN PRIVATE_TYPES */
|
|
|
|
/* USER CODE END PRIVATE_TYPES */
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/** @defgroup USBD_CDC_IF_Private_Defines USBD_CDC_IF_Private_Defines
|
|
* @brief Private defines.
|
|
* @{
|
|
*/
|
|
|
|
/* USER CODE BEGIN PRIVATE_DEFINES */
|
|
/* USER CODE END PRIVATE_DEFINES */
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/** @defgroup USBD_CDC_IF_Private_Macros USBD_CDC_IF_Private_Macros
|
|
* @brief Private macros.
|
|
* @{
|
|
*/
|
|
|
|
/* USER CODE BEGIN PRIVATE_MACRO */
|
|
|
|
/* USER CODE END PRIVATE_MACRO */
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/** @defgroup USBD_CDC_IF_Private_Variables USBD_CDC_IF_Private_Variables
|
|
* @brief Private variables.
|
|
* @{
|
|
*/
|
|
/* Create buffer for reception and transmission */
|
|
/* It's up to user to redefine and/or remove those define */
|
|
/** Received data over USB are stored in this buffer */
|
|
uint8_t UserRxBufferFS[APP_RX_DATA_SIZE];
|
|
|
|
/** Data to send over USB CDC are stored in this buffer */
|
|
uint8_t UserTxBufferFS[APP_TX_DATA_SIZE];
|
|
|
|
/* USER CODE BEGIN PRIVATE_VARIABLES */
|
|
|
|
/* USER CODE END PRIVATE_VARIABLES */
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/** @defgroup USBD_CDC_IF_Exported_Variables USBD_CDC_IF_Exported_Variables
|
|
* @brief Public variables.
|
|
* @{
|
|
*/
|
|
|
|
extern USBD_HandleTypeDef hUsbDeviceFS;
|
|
|
|
/* USER CODE BEGIN EXPORTED_VARIABLES */
|
|
|
|
/* USER CODE END EXPORTED_VARIABLES */
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/** @defgroup USBD_CDC_IF_Private_FunctionPrototypes USBD_CDC_IF_Private_FunctionPrototypes
|
|
* @brief Private functions declaration.
|
|
* @{
|
|
*/
|
|
|
|
static int8_t CDC_Init_FS(void);
|
|
static int8_t CDC_DeInit_FS(void);
|
|
static int8_t CDC_Control_FS(uint8_t cmd, uint8_t* pbuf, uint16_t length);
|
|
static int8_t CDC_Receive_FS(uint8_t* pbuf, uint32_t *Len);
|
|
|
|
/* USER CODE BEGIN PRIVATE_FUNCTIONS_DECLARATION */
|
|
|
|
/* USER CODE END PRIVATE_FUNCTIONS_DECLARATION */
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
USBD_CDC_ItfTypeDef USBD_Interface_fops_FS =
|
|
{
|
|
CDC_Init_FS,
|
|
CDC_DeInit_FS,
|
|
CDC_Control_FS,
|
|
CDC_Receive_FS
|
|
};
|
|
|
|
/* Private functions ---------------------------------------------------------*/
|
|
/**
|
|
* @brief Initializes the CDC media low layer over the FS USB IP
|
|
* @retval USBD_OK if all operations are OK else USBD_FAIL
|
|
*/
|
|
static int8_t CDC_Init_FS(void)
|
|
{
|
|
/* USER CODE BEGIN 3 */
|
|
/* Set Application Buffers */
|
|
USBD_CDC_SetTxBuffer(&hUsbDeviceFS, UserTxBufferFS, 0);
|
|
USBD_CDC_SetRxBuffer(&hUsbDeviceFS, UserRxBufferFS);
|
|
return (USBD_OK);
|
|
/* USER CODE END 3 */
|
|
}
|
|
|
|
/**
|
|
* @brief DeInitializes the CDC media low layer
|
|
* @retval USBD_OK if all operations are OK else USBD_FAIL
|
|
*/
|
|
static int8_t CDC_DeInit_FS(void)
|
|
{
|
|
/* USER CODE BEGIN 4 */
|
|
return (USBD_OK);
|
|
/* USER CODE END 4 */
|
|
}
|
|
|
|
/**
|
|
* @brief Manage the CDC class requests
|
|
* @param cmd: Command code
|
|
* @param pbuf: Buffer containing command data (request parameters)
|
|
* @param length: Number of data to be sent (in bytes)
|
|
* @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
|
|
*/
|
|
static int8_t CDC_Control_FS(uint8_t cmd, uint8_t* pbuf, uint16_t length)
|
|
{
|
|
/* USER CODE BEGIN 5 */
|
|
switch(cmd)
|
|
{
|
|
case CDC_SEND_ENCAPSULATED_COMMAND:
|
|
|
|
break;
|
|
|
|
case CDC_GET_ENCAPSULATED_RESPONSE:
|
|
|
|
break;
|
|
|
|
case CDC_SET_COMM_FEATURE:
|
|
|
|
break;
|
|
|
|
case CDC_GET_COMM_FEATURE:
|
|
|
|
break;
|
|
|
|
case CDC_CLEAR_COMM_FEATURE:
|
|
|
|
break;
|
|
|
|
/*******************************************************************************/
|
|
/* Line Coding Structure */
|
|
/*-----------------------------------------------------------------------------*/
|
|
/* Offset | Field | Size | Value | Description */
|
|
/* 0 | dwDTERate | 4 | Number |Data terminal rate, in bits per second*/
|
|
/* 4 | bCharFormat | 1 | Number | Stop bits */
|
|
/* 0 - 1 Stop bit */
|
|
/* 1 - 1.5 Stop bits */
|
|
/* 2 - 2 Stop bits */
|
|
/* 5 | bParityType | 1 | Number | Parity */
|
|
/* 0 - None */
|
|
/* 1 - Odd */
|
|
/* 2 - Even */
|
|
/* 3 - Mark */
|
|
/* 4 - Space */
|
|
/* 6 | bDataBits | 1 | Number Data bits (5, 6, 7, 8 or 16). */
|
|
/*******************************************************************************/
|
|
case CDC_SET_LINE_CODING:
|
|
|
|
break;
|
|
|
|
case CDC_GET_LINE_CODING:
|
|
|
|
break;
|
|
|
|
case CDC_SET_CONTROL_LINE_STATE:
|
|
|
|
break;
|
|
|
|
case CDC_SEND_BREAK:
|
|
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return (USBD_OK);
|
|
/* USER CODE END 5 */
|
|
}
|
|
|
|
/**
|
|
* @brief Data received over USB OUT endpoint are sent over CDC interface
|
|
* through this function.
|
|
*
|
|
* @note
|
|
* This function will issue a NAK packet on any OUT packet received on
|
|
* USB endpoint until exiting this function. If you exit this function
|
|
* before transfer is complete on CDC interface (ie. using DMA controller)
|
|
* it will result in receiving more data while previous ones are still
|
|
* not sent.
|
|
*
|
|
* @param Buf: Buffer of data to be received
|
|
* @param Len: Number of data received (in bytes)
|
|
* @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
|
|
*/
|
|
static int8_t CDC_Receive_FS(uint8_t* Buf, uint32_t *Len)
|
|
{
|
|
/* USER CODE BEGIN 6 */
|
|
printf("Rx %d b\r\n", (int) *Len);
|
|
printf("Bytes: %.*s\r\n", (int) *Len, Buf);
|
|
|
|
USBD_CDC_SetRxBuffer(&hUsbDeviceFS, &Buf[0]);
|
|
USBD_CDC_ReceivePacket(&hUsbDeviceFS);
|
|
return (USBD_OK);
|
|
/* USER CODE END 6 */
|
|
}
|
|
|
|
/**
|
|
* @brief CDC_Transmit_FS
|
|
* Data to send over USB IN endpoint are sent over CDC interface
|
|
* through this function.
|
|
* @note
|
|
*
|
|
*
|
|
* @param Buf: Buffer of data to be sent
|
|
* @param Len: Number of data to be sent (in bytes)
|
|
* @retval USBD_OK if all operations are OK else USBD_FAIL or USBD_BUSY
|
|
*/
|
|
uint8_t CDC_Transmit_FS(uint8_t* Buf, uint16_t Len)
|
|
{
|
|
uint8_t result = USBD_OK;
|
|
/* USER CODE BEGIN 7 */
|
|
USBD_CDC_HandleTypeDef *hcdc = (USBD_CDC_HandleTypeDef*)hUsbDeviceFS.pClassData;
|
|
if (hcdc->TxState != 0){
|
|
return USBD_BUSY;
|
|
}
|
|
USBD_CDC_SetTxBuffer(&hUsbDeviceFS, Buf, Len);
|
|
result = USBD_CDC_TransmitPacket(&hUsbDeviceFS);
|
|
/* USER CODE END 7 */
|
|
return result;
|
|
}
|
|
|
|
/* USER CODE BEGIN PRIVATE_FUNCTIONS_IMPLEMENTATION */
|
|
|
|
/* USER CODE END PRIVATE_FUNCTIONS_IMPLEMENTATION */
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|