UHSDR/UHSDR-active-devel/mchf-eclipse/drivers/usb/app/usbd_cdc_if.c
2022-11-08 16:13:55 +01:00

472 lines
13 KiB
C

/**
******************************************************************************
* @file : usbd_cdc_if.c
* @brief :
******************************************************************************
*
* Copyright (c) 2017 STMicroelectronics International N.V.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted, provided that the following conditions are met:
*
* 1. Redistribution of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of other
* contributors to this software may be used to endorse or promote products
* derived from this software without specific written permission.
* 4. This software, including modifications and/or derivative works of this
* software, must execute solely and exclusively on microcontroller or
* microprocessor devices manufactured by or for STMicroelectronics.
* 5. Redistribution and use of this software other than as permitted under
* this license is void and will automatically terminate your rights under
* this license.
*
* THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
* RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT
* SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "usbd_cdc_if.h"
#include "cat_driver.h"
#include "usb_device.h"
#include "usbd_composite.h"
#include "usbd_composite_desc.h"
/* USER CODE BEGIN INCLUDE */
/* USER CODE END INCLUDE */
/** @addtogroup STM32_USB_OTG_DEVICE_LIBRARY
* @{
*/
/** @defgroup USBD_CDC
* @brief usbd core module
* @{
*/
/** @defgroup USBD_CDC_Private_TypesDefinitions
* @{
*/
/* USER CODE BEGIN PRIVATE_TYPES */
/* USER CODE END PRIVATE_TYPES */
/**
* @}
*/
/** @defgroup USBD_CDC_Private_Defines
* @{
*/
/* USER CODE BEGIN PRIVATE_DEFINES */
/* Define size for the receive and transmit buffer over CDC */
/* It's up to user to redefine and/or remove those define */
#define APP_RX_DATA_SIZE 64
#define APP_TX_DATA_SIZE 2048
/* USER CODE END PRIVATE_DEFINES */
/**
* @}
*/
/** @defgroup USBD_CDC_Private_Macros
* @{
*/
/* USER CODE BEGIN PRIVATE_MACRO */
/* USER CODE END PRIVATE_MACRO */
/**
* @}
*/
/** @defgroup USBD_CDC_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];
/* Send Data over USB CDC are stored in this buffer */
uint8_t UserTxBufferFS [APP_TX_DATA_SIZE];
uint32_t CDC_Tx_PtrIn = 0;
uint32_t CDC_Tx_PtrOut = 0;
uint32_t CDC_Tx_Length = 0;
uint8_t CDC_Tx_State = 0;
typedef struct
{
uint32_t speed;
uint8_t stop;
uint8_t parity;
uint8_t bits;
} CdvVcp_LineCoding_t;
static CdvVcp_LineCoding_t CDC_Linecoding =
{
// 9600 8n1
.speed = 9600,
.stop = 0, // 1 stop bit
.bits = 8, // 8 data bits
.parity = 0, // parity none
};
/* USER CODE BEGIN PRIVATE_VARIABLES */
/* USER CODE END PRIVATE_VARIABLES */
/**
* @}
*/
/** @defgroup USBD_CDC_IF_Exported_Variables
* @{
*/
__IO CdcVcp_CtrlLines_t cdcvcp_ctrllines;
/* USER CODE BEGIN EXPORTED_VARIABLES */
/* USER CODE END EXPORTED_VARIABLES */
/**
* @}
*/
/** @defgroup USBD_CDC_Private_FunctionPrototypes
* @{
*/
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);
static int8_t CDC_SOF (USBD_HandleTypeDef *pdev);
static int8_t CDC_DataIn (USBD_HandleTypeDef *pdev);
/* 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,
CDC_SOF,
CDC_DataIn
};
/* Private functions ---------------------------------------------------------*/
/**
* @brief CDC_Init_FS
* Initializes the CDC media low layer over the FS USB IP
* @param None
* @retval Result of the operation: 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 CDC_DeInit_FS
* DeInitializes the CDC media low layer
* @param None
* @retval Result of the operation: 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 CDC_Control_FS
* 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:
// just copy the requested line coding
// we ignore it for now but keep it to
// satisfy the host when it asks for the current
// line coding
memcpy(&CDC_Linecoding,pbuf,sizeof(CDC_Linecoding));
break;
case CDC_GET_LINE_CODING:
memcpy(pbuf,&CDC_Linecoding,length);
break;
case CDC_SET_CONTROL_LINE_STATE:
{
// we get wValue here as buffer
uint16_t wValue = *(uint16_t*)&(pbuf[0]);
cdcvcp_ctrllines.dtr = (wValue & 0x01)?1:0;
cdcvcp_ctrllines.rts = (wValue & 0x02)?1:0;
break;
}
break;
case CDC_SEND_BREAK:
break;
default:
break;
}
return (USBD_OK);
/* USER CODE END 5 */
}
/**
* @brief CDC_Receive_FS
* Data received over USB OUT endpoint are sent over CDC interface
* through this function.
*
* @note
* This function will block any OUT packet reception on USB endpoint
* untill 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 */
for (uint32_t i = 0; i < *Len; i++)
{
CatDriver_InterfaceBufferAddData(Buf[i]);
}
USBD_CDC_SetRxBuffer(&hUsbDeviceFS, &Buf[0]);
USBD_CDC_ReceivePacket(&hUsbDeviceFS);
return (USBD_OK);
/* USER CODE END 6 */
}
/**
* @brief CDC_Transmit_FS
* Data send over USB IN endpoint are sent over CDC interface
* through this function.
* @note
*
*
* @param Buf: Buffer of data to be send
* @param Len: Number of data to be send (in bytes)
* @retval Result of the operation: 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 */
uint32_t tx_counter = 0;
while (tx_counter < Len)
{
UserTxBufferFS[CDC_Tx_PtrIn] = *(Buf+tx_counter);
CDC_Tx_PtrIn++;
/* To avoid buffer overflow */
if (CDC_Tx_PtrIn >= APP_TX_DATA_SIZE)
{
CDC_Tx_PtrIn = 0;
}
tx_counter++;
}
/* USER CODE END 7 */
return result;
}
/* USER CODE BEGIN PRIVATE_FUNCTIONS_IMPLEMENTATION */
/* USER CODE END PRIVATE_FUNCTIONS_IMPLEMENTATION */
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
static void CDC_InitiateTransmit(USBD_HandleTypeDef *pdev)
{
uint16_t USB_Tx_ptr;
uint16_t USB_Tx_length;
if (CDC_Tx_Length > CDC_DATA_FS_IN_PACKET_SIZE)
{
USB_Tx_ptr = CDC_Tx_PtrOut;
USB_Tx_length = CDC_DATA_FS_IN_PACKET_SIZE;
CDC_Tx_PtrOut += CDC_DATA_FS_IN_PACKET_SIZE;
CDC_Tx_Length -= CDC_DATA_FS_IN_PACKET_SIZE;
}
else
{
USB_Tx_ptr = CDC_Tx_PtrOut;
USB_Tx_length = CDC_Tx_Length;
CDC_Tx_PtrOut += CDC_Tx_Length;
CDC_Tx_Length = 0;
}
CDC_Tx_State = 1;
USBD_CDC_SetTxBuffer(pdev,
&UserTxBufferFS[USB_Tx_ptr],
USB_Tx_length);
/* Prepare the available data buffer to be sent on IN endpoint */
USBD_CDC_TransmitPacket(pdev);
}
/**
* @brief Handle_USBAsynchXfer
* Send data to USB
* @param pdev: instance
* @retval None
*/
static void CDC_Handle_USBAsynchXfer (USBD_HandleTypeDef *pdev)
{
if(CDC_Tx_State != 1)
{
if (CDC_Tx_PtrOut == APP_TX_DATA_SIZE)
{
CDC_Tx_PtrOut = 0;
}
if(CDC_Tx_PtrOut == CDC_Tx_PtrIn)
{
CDC_Tx_Length = 0;
CDC_Tx_State = 0;
}
else
{
if(CDC_Tx_PtrOut > CDC_Tx_PtrIn) /* rollback */
{
CDC_Tx_Length = APP_TX_DATA_SIZE - CDC_Tx_PtrOut;
}
else
{
CDC_Tx_Length = CDC_Tx_PtrIn - CDC_Tx_PtrOut;
}
CDC_InitiateTransmit(pdev);
}
}
}
static int8_t CDC_DataIn (USBD_HandleTypeDef *pdev)
{
if (CDC_Tx_State == 1)
{
if (CDC_Tx_Length == 0)
{
CDC_Tx_State = 0;
}
else
{
CDC_InitiateTransmit(pdev);
}
}
return CDC_Tx_State;
}
static int8_t CDC_SOF (USBD_HandleTypeDef *pdev)
{
static uint32_t FrameCount = 0;
if (FrameCount++ == 2) // every second frame
{
/* Reset the frame counter */
FrameCount = 0;
/* Check the data to be sent through IN pipe */
CDC_Handle_USBAsynchXfer(pdev);
}
return USBD_OK;
}