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361 lines
11 KiB
361 lines
11 KiB
/**
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******************************************************************************
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* @file : usbd_cdc_if.c
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* @version : v2.0_Cube
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* @brief : Usb device for Virtual Com Port.
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******************************************************************************
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* This notice applies to any and all portions of this file
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* that are not between comment pairs USER CODE BEGIN and
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* USER CODE END. Other portions of this file, whether
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* inserted by the user or by software development tools
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* are owned by their respective copyright owners.
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*
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* Copyright (c) 2018 STMicroelectronics International N.V.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted, provided that the following conditions are met:
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*
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* 1. Redistribution of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of STMicroelectronics nor the names of other
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* contributors to this software may be used to endorse or promote products
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* derived from this software without specific written permission.
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* 4. This software, including modifications and/or derivative works of this
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* software, must execute solely and exclusively on microcontroller or
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* microprocessor devices manufactured by or for STMicroelectronics.
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* 5. Redistribution and use of this software other than as permitted under
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* this license is void and will automatically terminate your rights under
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* this license.
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*
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* THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
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* PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
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* RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT
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* SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include <debug.h>
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#include <msg_queue.h>
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#include <gex_gateway.h>
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#include "usbd_cdc_if.h"
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/* USER CODE BEGIN INCLUDE */
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/* USER CODE END INCLUDE */
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* USER CODE BEGIN PV */
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/* Private variables ---------------------------------------------------------*/
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/* USER CODE END PV */
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/** @addtogroup STM32_USB_OTG_DEVICE_LIBRARY
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* @brief Usb device library.
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* @{
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*/
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/** @addtogroup USBD_CDC_IF
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* @{
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*/
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/** @defgroup USBD_CDC_IF_Private_TypesDefinitions USBD_CDC_IF_Private_TypesDefinitions
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* @brief Private types.
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* @{
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*/
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/* USER CODE BEGIN PRIVATE_TYPES */
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/* USER CODE END PRIVATE_TYPES */
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/**
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* @}
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*/
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/** @defgroup USBD_CDC_IF_Private_Defines USBD_CDC_IF_Private_Defines
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* @brief Private defines.
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* @{
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*/
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/* USER CODE BEGIN PRIVATE_DEFINES */
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/* Define size for the receive and transmit buffer over CDC */
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/* It's up to user to redefine and/or remove those define */
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#define APP_RX_DATA_SIZE 1000
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#define APP_TX_DATA_SIZE 1000
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/* USER CODE END PRIVATE_DEFINES */
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/**
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* @}
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*/
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/** @defgroup USBD_CDC_IF_Private_Macros USBD_CDC_IF_Private_Macros
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* @brief Private macros.
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* @{
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*/
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/* USER CODE BEGIN PRIVATE_MACRO */
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/* USER CODE END PRIVATE_MACRO */
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/**
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* @}
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*/
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volatile bool usb_tx_busy = false;
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/** @defgroup USBD_CDC_IF_Private_Variables USBD_CDC_IF_Private_Variables
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* @brief Private variables.
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* @{
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*/
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/* Create buffer for reception and transmission */
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/* It's up to user to redefine and/or remove those define */
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/** Received data over USB are stored in this buffer */
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uint8_t UserRxBufferFS[APP_RX_DATA_SIZE];
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/** Data to send over USB CDC are stored in this buffer */
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uint8_t UserTxBufferFS[APP_TX_DATA_SIZE];
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/* USER CODE BEGIN PRIVATE_VARIABLES */
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/* USER CODE END PRIVATE_VARIABLES */
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/**
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* @}
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*/
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/** @defgroup USBD_CDC_IF_Exported_Variables USBD_CDC_IF_Exported_Variables
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* @brief Public variables.
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* @{
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*/
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extern USBD_HandleTypeDef hUsbDeviceFS;
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/* USER CODE BEGIN EXPORTED_VARIABLES */
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/* USER CODE END EXPORTED_VARIABLES */
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/**
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* @}
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*/
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/** @defgroup USBD_CDC_IF_Private_FunctionPrototypes USBD_CDC_IF_Private_FunctionPrototypes
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* @brief Private functions declaration.
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* @{
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*/
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static int8_t CDC_Init_FS(void);
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static int8_t CDC_DeInit_FS(void);
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static int8_t CDC_Control_FS(uint8_t cmd, uint8_t* pbuf, uint16_t length);
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static int8_t CDC_Receive_FS(uint8_t* pbuf, uint32_t *Len);
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/* USER CODE BEGIN PRIVATE_FUNCTIONS_DECLARATION */
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/* USER CODE END PRIVATE_FUNCTIONS_DECLARATION */
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/**
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* @}
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*/
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USBD_CDC_ItfTypeDef USBD_Interface_fops_FS =
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{
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CDC_Init_FS,
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CDC_DeInit_FS,
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CDC_Control_FS,
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CDC_Receive_FS
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};
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/* Private functions ---------------------------------------------------------*/
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/**
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* @brief Initializes the CDC media low layer over the FS USB IP
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* @retval USBD_OK if all operations are OK else USBD_FAIL
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*/
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static int8_t CDC_Init_FS(void)
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{
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/* USER CODE BEGIN 3 */
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/* Set Application Buffers */
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USBD_CDC_SetTxBuffer(&hUsbDeviceFS, UserTxBufferFS, 0);
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USBD_CDC_SetRxBuffer(&hUsbDeviceFS, UserRxBufferFS);
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return (USBD_OK);
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/* USER CODE END 3 */
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}
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/**
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* @brief DeInitializes the CDC media low layer
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* @retval USBD_OK if all operations are OK else USBD_FAIL
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*/
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static int8_t CDC_DeInit_FS(void)
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{
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/* USER CODE BEGIN 4 */
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return (USBD_OK);
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/* USER CODE END 4 */
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}
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/**
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* @brief Manage the CDC class requests
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* @param cmd: Command code
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* @param pbuf: Buffer containing command data (request parameters)
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* @param length: Number of data to be sent (in bytes)
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* @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
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*/
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static int8_t CDC_Control_FS(uint8_t cmd, uint8_t* pbuf, uint16_t length)
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{
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/* USER CODE BEGIN 5 */
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switch(cmd)
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{
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case CDC_SEND_ENCAPSULATED_COMMAND:
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break;
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case CDC_GET_ENCAPSULATED_RESPONSE:
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break;
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case CDC_SET_COMM_FEATURE:
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break;
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case CDC_GET_COMM_FEATURE:
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break;
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case CDC_CLEAR_COMM_FEATURE:
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break;
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/*******************************************************************************/
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/* Line Coding Structure */
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/*-----------------------------------------------------------------------------*/
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/* Offset | Field | Size | Value | Description */
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/* 0 | dwDTERate | 4 | Number |Data terminal rate, in bits per second*/
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/* 4 | bCharFormat | 1 | Number | Stop bits */
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/* 0 - 1 Stop bit */
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/* 1 - 1.5 Stop bits */
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/* 2 - 2 Stop bits */
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/* 5 | bParityType | 1 | Number | Parity */
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/* 0 - None */
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/* 1 - Odd */
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/* 2 - Even */
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/* 3 - Mark */
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/* 4 - Space */
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/* 6 | bDataBits | 1 | Number Data bits (5, 6, 7, 8 or 16). */
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/*******************************************************************************/
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case CDC_SET_LINE_CODING:
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break;
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case CDC_GET_LINE_CODING:
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break;
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case CDC_SET_CONTROL_LINE_STATE:
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break;
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case CDC_SEND_BREAK:
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break;
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default:
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break;
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}
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return (USBD_OK);
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/* USER CODE END 5 */
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}
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/**
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* @brief Data received over USB OUT endpoint are sent over CDC interface
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* through this function.
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*
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* @note
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* This function will block any OUT packet reception on USB endpoint
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* untill exiting this function. If you exit this function before transfer
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* is complete on CDC interface (ie. using DMA controller) it will result
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* in receiving more data while previous ones are still not sent.
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*
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* @param Buf: Buffer of data to be received
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* @param Len: Number of data received (in bytes)
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* @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
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*/
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static int8_t CDC_Receive_FS(uint8_t* Buf, uint32_t *Len)
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{
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/* USER CODE BEGIN 6 */
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USBD_CDC_SetRxBuffer(&hUsbDeviceFS, &Buf[0]);
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USBD_CDC_ReceivePacket(&hUsbDeviceFS);
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// queue the frame
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gw_handle_usb_out(Buf); // this expects full 64byte frames always starting with magic or useful data
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// handled immediately in the interrupt to block USB (NAK)
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//
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// bool suc = mq_post(&usb_rxq, Buf, *Len);
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// if (!suc) {
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// dbg("USB rxq overrun!");
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// }
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return (USBD_OK);
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/* USER CODE END 6 */
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}
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/**
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* @brief CDC_Transmit_FS
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* Data to send over USB IN endpoint are sent over CDC interface
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* through this function.
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* @note
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*
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*
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* @param Buf: Buffer of data to be sent
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* @param Len: Number of data to be sent (in bytes)
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* @retval USBD_OK if all operations are OK else USBD_FAIL or USBD_BUSY
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*/
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uint8_t CDC_Transmit_FS(uint8_t* Buf, uint16_t Len)
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{
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uint8_t result = USBD_OK;
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/* USER CODE BEGIN 7 */
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USBD_CDC_HandleTypeDef *hcdc = (USBD_CDC_HandleTypeDef*)hUsbDeviceFS.pClassData;
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if (hcdc->TxState != 0){
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return USBD_BUSY;
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}
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usb_tx_busy = true;
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USBD_CDC_SetTxBuffer(&hUsbDeviceFS, Buf, Len);
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result = USBD_CDC_TransmitPacket(&hUsbDeviceFS);
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/* USER CODE END 7 */
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return result;
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}
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/* USER CODE BEGIN PRIVATE_FUNCTIONS_IMPLEMENTATION */
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/* USER CODE END PRIVATE_FUNCTIONS_IMPLEMENTATION */
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void USBD_CDC_TransmitDone(USBD_HandleTypeDef *pdev)
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{
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usb_tx_busy = false;
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}
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/**
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* @}
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*/
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/**
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* @}
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*/
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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