kopia lustrzana https://github.com/micropython/micropython
220 wiersze
6.7 KiB
C
220 wiersze
6.7 KiB
C
/**
|
|
******************************************************************************
|
|
* @file usbd_cdc_vcp.c
|
|
* @author MCD Application Team
|
|
* @version V1.1.0
|
|
* @date 19-March-2012
|
|
* @brief Generic media access Layer.
|
|
******************************************************************************
|
|
* @attention
|
|
*
|
|
* <h2><center>© COPYRIGHT 2012 STMicroelectronics</center></h2>
|
|
*
|
|
* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
|
|
* You may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at:
|
|
*
|
|
* http://www.st.com/software_license_agreement_liberty_v2
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*
|
|
******************************************************************************
|
|
*/
|
|
|
|
#ifdef USB_OTG_HS_INTERNAL_DMA_ENABLED
|
|
#pragma data_alignment = 4
|
|
#endif /* USB_OTG_HS_INTERNAL_DMA_ENABLED */
|
|
|
|
/* Includes ------------------------------------------------------------------*/
|
|
#include "usbd_conf.h"
|
|
#include "usbd_cdc_vcp.h"
|
|
#include "std.h"
|
|
|
|
/* Private typedef -----------------------------------------------------------*/
|
|
/* Private define ------------------------------------------------------------*/
|
|
/* Private macro -------------------------------------------------------------*/
|
|
/* Private variables ---------------------------------------------------------*/
|
|
LINE_CODING linecoding =
|
|
{
|
|
115200, /* baud rate*/
|
|
0x00, /* stop bits-1*/
|
|
0x00, /* parity - none*/
|
|
0x08 /* nb. of bits 8*/
|
|
};
|
|
|
|
|
|
/* These are external variables imported from CDC core to be used for IN
|
|
transfer management. */
|
|
extern uint8_t APP_Rx_Buffer []; /* Write CDC received data in this buffer.
|
|
These data will be sent over USB IN endpoint
|
|
in the CDC core functions. */
|
|
extern uint32_t APP_Rx_ptr_in; /* Increment this pointer or roll it back to
|
|
start address when writing received data
|
|
in the buffer APP_Rx_Buffer. */
|
|
|
|
/* Private function prototypes -----------------------------------------------*/
|
|
static uint16_t VCP_Init (void);
|
|
static uint16_t VCP_DeInit (void);
|
|
static uint16_t VCP_Ctrl (uint32_t Cmd, uint8_t* Buf, uint32_t Len);
|
|
static uint16_t VCP_DataTx (const uint8_t* Buf, uint32_t Len);
|
|
static uint16_t VCP_DataRx (uint8_t* Buf, uint32_t Len);
|
|
|
|
CDC_IF_Prop_TypeDef VCP_fops =
|
|
{
|
|
VCP_Init,
|
|
VCP_DeInit,
|
|
VCP_Ctrl,
|
|
VCP_DataTx,
|
|
VCP_DataRx
|
|
};
|
|
|
|
/* Private functions ---------------------------------------------------------*/
|
|
/**
|
|
* @brief VCP_Init
|
|
* Initializes the Media on the STM32
|
|
* @param None
|
|
* @retval Result of the opeartion (USBD_OK in all cases)
|
|
*/
|
|
static uint16_t VCP_Init(void) {
|
|
return USBD_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief VCP_DeInit
|
|
* DeInitializes the Media on the STM32
|
|
* @param None
|
|
* @retval Result of the opeartion (USBD_OK in all cases)
|
|
*/
|
|
static uint16_t VCP_DeInit(void)
|
|
{
|
|
|
|
return USBD_OK;
|
|
}
|
|
|
|
|
|
/**
|
|
* @brief VCP_Ctrl
|
|
* Manage the CDC class requests
|
|
* @param Cmd: Command code
|
|
* @param Buf: Buffer containing command data (request parameters)
|
|
* @param Len: Number of data to be sent (in bytes)
|
|
* @retval Result of the opeartion (USBD_OK in all cases)
|
|
*/
|
|
static uint16_t VCP_Ctrl (uint32_t Cmd, uint8_t* Buf, uint32_t Len)
|
|
{
|
|
switch (Cmd)
|
|
{
|
|
case SEND_ENCAPSULATED_COMMAND:
|
|
/* Not needed for this driver */
|
|
break;
|
|
|
|
case GET_ENCAPSULATED_RESPONSE:
|
|
/* Not needed for this driver */
|
|
break;
|
|
|
|
case SET_COMM_FEATURE:
|
|
/* Not needed for this driver */
|
|
break;
|
|
|
|
case GET_COMM_FEATURE:
|
|
/* Not needed for this driver */
|
|
break;
|
|
|
|
case CLEAR_COMM_FEATURE:
|
|
/* Not needed for this driver */
|
|
break;
|
|
|
|
case SET_LINE_CODING:
|
|
/*
|
|
linecoding.bitrate = (uint32_t)(Buf[0] | (Buf[1] << 8) | (Buf[2] << 16) | (Buf[3] << 24));
|
|
linecoding.format = Buf[4];
|
|
linecoding.paritytype = Buf[5];
|
|
linecoding.datatype = Buf[6];
|
|
// Set the new configuration
|
|
VCP_COMConfig(OTHER_CONFIG);
|
|
*/
|
|
break;
|
|
|
|
case GET_LINE_CODING:
|
|
/*
|
|
Buf[0] = (uint8_t)(linecoding.bitrate);
|
|
Buf[1] = (uint8_t)(linecoding.bitrate >> 8);
|
|
Buf[2] = (uint8_t)(linecoding.bitrate >> 16);
|
|
Buf[3] = (uint8_t)(linecoding.bitrate >> 24);
|
|
Buf[4] = linecoding.format;
|
|
Buf[5] = linecoding.paritytype;
|
|
Buf[6] = linecoding.datatype;
|
|
*/
|
|
Buf[0] = 0;
|
|
Buf[1] = 0;
|
|
Buf[2] = 0;
|
|
Buf[3] = 0;
|
|
Buf[4] = 0;
|
|
Buf[5] = 0;
|
|
Buf[6] = 0;
|
|
break;
|
|
|
|
case SET_CONTROL_LINE_STATE:
|
|
/* Not needed for this driver */
|
|
break;
|
|
|
|
case SEND_BREAK:
|
|
/* Not needed for this driver */
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return USBD_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief VCP_DataTx
|
|
* CDC received data to be send over USB IN endpoint are managed in
|
|
* this function.
|
|
* @param Buf: Buffer of data to be sent
|
|
* @param Len: Number of data to be sent (in bytes)
|
|
* @retval Result of the opeartion: USBD_OK if all operations are OK else VCP_FAIL
|
|
*/
|
|
static uint16_t VCP_DataTx (const uint8_t* Buf, uint32_t Len)
|
|
{
|
|
for (int i = 0; i < Len; i++) {
|
|
APP_Rx_Buffer[APP_Rx_ptr_in] = Buf[i];
|
|
APP_Rx_ptr_in++;
|
|
|
|
/* To avoid buffer overflow */
|
|
if(APP_Rx_ptr_in == APP_RX_DATA_SIZE) {
|
|
APP_Rx_ptr_in = 0;
|
|
}
|
|
}
|
|
|
|
return USBD_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief VCP_DataRx
|
|
* 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 opeartion: USBD_OK if all operations are OK else VCP_FAIL
|
|
*/
|
|
static uint16_t VCP_DataRx (uint8_t* Buf, uint32_t Len) {
|
|
//printf("%.*s", (int)Len, Buf);
|
|
return USBD_OK;
|
|
}
|
|
|
|
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|