flipperzero-firmware/firmware/targets/f6/usb-glue/usbd_cdc_if.c

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#include "usbd_cdc_if.h"
#include <furi-hal-vcp_i.h>
extern USBD_HandleTypeDef hUsbDeviceFS;
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_TransmitCplt_FS(uint8_t *pbuf, uint32_t *Len, uint8_t epnum);
USBD_CDC_ItfTypeDef USBD_Interface_fops_FS =
{
CDC_Init_FS,
CDC_DeInit_FS,
CDC_Control_FS,
CDC_Receive_FS,
CDC_TransmitCplt_FS
};
uint8_t UserRxBufferFS[APP_RX_DATA_SIZE];
uint8_t UserTxBufferFS[APP_TX_DATA_SIZE];
/** 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) {
/* Set Application Buffers */
USBD_CDC_SetTxBuffer(&hUsbDeviceFS, UserTxBufferFS, 0);
USBD_CDC_SetRxBuffer(&hUsbDeviceFS, UserRxBufferFS);
return (USBD_OK);
}
/**
* @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) {
return (USBD_OK);
}
/** 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) {
if (cmd == CDC_SEND_ENCAPSULATED_COMMAND) {
} else if (cmd == CDC_GET_ENCAPSULATED_RESPONSE) {
} else if (cmd == CDC_SET_COMM_FEATURE) {
} else if (cmd == CDC_GET_COMM_FEATURE) {
} else if (cmd == CDC_CLEAR_COMM_FEATURE) {
} else if (cmd == CDC_SET_LINE_CODING) {
/*******************************************************************************/
/* 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). */
/*******************************************************************************/
} else if (cmd == CDC_GET_LINE_CODING) {
} else if (cmd == CDC_SET_CONTROL_LINE_STATE) {
furi_hal_vcp_on_cdc_control_line(((USBD_SetupReqTypedef*)pbuf)->wValue);
} else if (cmd == CDC_SEND_BREAK) {
} else {
}
return (USBD_OK);
}
/** 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) {
if (*Len) {
furi_hal_vcp_on_cdc_rx(Buf, *Len);
} else {
USBD_CDC_ReceivePacket(&hUsbDeviceFS);
}
return (USBD_OK);
}
/** CDC_Transmit_FS Data to send over USB IN endpoint are sent over CDC interface
* through this function.
* @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;
USBD_CDC_HandleTypeDef *hcdc = (USBD_CDC_HandleTypeDef*)hUsbDeviceFS.pClassData;
if (hcdc->TxState != 0){
return USBD_BUSY;
}
memcpy(UserTxBufferFS, Buf, Len);
USBD_CDC_SetTxBuffer(&hUsbDeviceFS, UserTxBufferFS, Len);
result = USBD_CDC_TransmitPacket(&hUsbDeviceFS);
return result;
}
/** CDC_TransmitCplt_FS Data transmited callback
*
* @note
* This function is IN transfer complete callback used to inform user that
* the submitted Data is successfully sent over USB.
*
* @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_TransmitCplt_FS(uint8_t *Buf, uint32_t *Len, uint8_t epnum) {
uint8_t result = USBD_OK;
furi_hal_vcp_on_cdc_tx_complete(*Len);
return result;
}