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#include "trcRecorder.h"
#if (TRC_USE_TRACEALYZER_RECORDER == 1)
#if (TRC_CFG_RECORDER_MODE == TRC_RECORDER_MODE_STREAMING)
#include "stdint.h"
/* Include files as needed, in this case it is files from STM32Cube FW_F7 V1.4.1 */
#include "usb_device.h"
#include "usbd_cdc.h"
#include "usbd_CDC_if.h"
#include "usb_device.h"
#define BUFSIZE 64
typedef struct{
uint32_t idx;
uint8_t data[BUFSIZE];
}recBuf;
/* Define size for the receive and transmit buffer over CDC */
#define APP_RX_DATA_SIZE 8
#define APP_TX_DATA_SIZE 64
/* 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];
extern USBD_HandleTypeDef hUsbDeviceFS;
extern PCD_HandleTypeDef hpcd_USB_OTG_FS;
recBuf commandBuffer;
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);
USBD_CDC_ItfTypeDef USBD_Interface_fops_FS =
{
CDC_Init_FS,
CDC_DeInit_FS,
CDC_Control_FS,
CDC_Receive_FS
};
/* 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)
{
/* Set Application Buffers */
USBD_CDC_SetTxBuffer(&hUsbDeviceFS, UserTxBufferFS, 0);
USBD_CDC_SetRxBuffer(&hUsbDeviceFS, UserRxBufferFS);
return (USBD_OK);
}
/**
* @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)
{
return (USBD_OK);
}
/**
* @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)
{
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);
}
/**
* @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
* until exiting this function. If you exit this function before transfer
* is complete on CDC interface (i.e. 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)
{
for( uint32_t i=0;i<* Len;i++)
{
commandBuffer.data[commandBuffer.idx]=Buf[i];
commandBuffer.idx++;
}
USBD_CDC_SetRxBuffer(&hUsbDeviceFS, &Buf[0]);
USBD_CDC_ReceivePacket(&hUsbDeviceFS);
return (USBD_OK);
}
/**
* @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;
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);
return result;
}
/* The READ function, used in trcStreamingPort.h */
int32_t trcCDCReceive(void *data, uint32_t size, int32_t* NumBytes)
{
uint32_t i,diff;
if(commandBuffer.idx>0)
{
if (size >= commandBuffer.idx) // more than what is stored, number of bytes will be .idx
{
memcpy(data,commandBuffer.data, commandBuffer.idx);
*NumBytes=commandBuffer.idx;
commandBuffer.idx=0; // Make the buffer ready for a new command
}
else //If some data in the buffer is not read
{
diff = commandBuffer.idx-size;
memcpy(data,commandBuffer.data, size);
for(i=0;i<diff;i++)
{
commandBuffer.data[i]=commandBuffer.data[i+size];
}
*NumBytes=size;
commandBuffer.idx=diff;
}
}
else
{
*NumBytes=0;
}
return 0;
}
/* The WRITE function, used in trcStreamingPort.h */
int32_t trcCDCTransmit(void* data, uint32_t size, int32_t * noOfBytesSent )
{
int32_t result;
result=CDC_Transmit_FS(data, size);
*noOfBytesSent = size;
/* Return value should be 0 on success (not sure what the value of USBD_OK is) */
if (result == USBD_OK)
return 0;
else
return -1;
}
/**
* @brief This function handles USB On The Go FS global interrupt.
*/
void OTG_FS_IRQHandler(void)
{
HAL_PCD_IRQHandler(&hpcd_USB_OTG_FS);
}
#endif /*(TRC_CFG_RECORDER_MODE == TRC_RECORDER_MODE_STREAMING)*/
#endif /*(TRC_USE_TRACEALYZER_RECORDER == 1)*/
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