STM32, Virtual COM Port, USB CDC, Embedded Systems, Serial Communication, Device Driver 1. Introduction Embedded systems frequently require communication with a host PC for debugging, configuration, or data transfer. Traditional RS-232 serial ports are increasingly absent from modern computers. STMicroelectronics addresses this gap by providing a Virtual COM Port driver that allows an STM32 microcontroller with USB peripheral to appear as a standard serial port on the host OS.
// Copy Buf to application buffer USBD_CDC_SetRxBuffer(&hUsbDeviceFS, &RxBuffer[0]); USBD_CDC_ReceivePacket(&hUsbDeviceFS); return (USBD_OK); stmicroelectronics virtual com port driver
static int8_t CDC_Receive_FS(uint8_t* Buf, uint32_t *Len) STM32, Virtual COM Port, USB CDC, Embedded Systems,