usbd_cdc_if.c File Reference

: Usb device for Virtual Com Port. More...

#include "usbd_cdc_if.h"
#include <string.h>
#include <stdbool.h>
#include "stm32h7xx.h"
#include "mode.h"

Include dependency graph for usbd_cdc_if.c:

Go to the source code of this file.

Macros
#define	BOOTLOADER_ADDR   0x1FF09800UL /* ST's H723 example; confirm in AN2606 */
#define	BOOTLOADER_MAGIC   0xB007100DUL /* RTC->BKP0R, survives the reset */

Functions
static int8_t	CDC_Init_HS (void)
	Initializes the CDC media low layer over the USB HS IP.
static int8_t	CDC_DeInit_HS (void)
	DeInitializes the CDC media low layer.
static int8_t	CDC_Control_HS (uint8_t cmd, uint8_t *pbuf, uint16_t length)
	Manage the CDC class requests.
static int8_t	CDC_Receive_HS (uint8_t *Buf, uint32_t *Len)
	Data received over USB OUT endpoint are sent over CDC interface through this function.
static int8_t	CDC_TransmitCplt_HS (uint8_t *Buf, uint32_t *Len, uint8_t epnum)
	CDC_TransmitCplt_HS Data transmitted callback.
static bool	is_bootloader_cmd (const uint8_t *b, uint32_t n)
uint8_t	CDC_Transmit_HS (uint8_t *Buf, uint16_t Len)
	Data to send over USB IN endpoint are sent over CDC interface through this function.
bool	usb_configured (void)
bool	usb_terminal_open (void)
void	usb_bootloader_check (void)

Variables
volatile bool	g_usb_terminal_connected = false
static uint8_t	line_coding [7] = {0x00, 0xC2, 0x01, 0x00, 0, 0, 8}
uint8_t	UserRxBufferHS [APP_RX_DATA_SIZE]
	Received data over USB are stored in this buffer.
uint8_t	UserTxBufferHS [APP_TX_DATA_SIZE]
	Data to send over USB CDC are stored in this buffer.
USBD_HandleTypeDef	hUsbDeviceHS
USBD_CDC_ItfTypeDef	USBD_Interface_fops_HS
	CDC Interface callback.

Detailed Description

: Usb device for Virtual Com Port.

Version

: v1.0_Cube

Attention

Copyright (c) 2026 STMicroelectronics. All rights reserved.

This software is licensed under terms that can be found in the LICENSE file in the root directory of this software component. If no LICENSE file comes with this software, it is provided AS-IS.

Definition in file usbd_cdc_if.c.

Variable Documentation

line_coding

uint8_t line_coding[7] = {0x00, 0xC2, 0x01, 0x00, 0, 0, 8}

static

Definition at line 38 of file usbd_cdc_if.c.

Referenced by CDC_Control_HS().