Solved
USB CDC does not work when I unplug and replug STM32
I'm using the Nucleo-H743ZI STM32 development board on windows 10. When I upload a program that sends out data through CDC with CDC_Transmit_FS and open a serial monitor right after, it works fine. But when I disconnect and reconnect the Nucleo to my computer the serial port cannot seem to be able to open. In Putty I get unable to configure serial port. This only happens when I unplug the ST-Link side of the nucleo. My code is very basic and shown below:
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
CDC_Transmit_FS((uint8_t *) "AAAAAAAA\r\n", 10);
HAL_Delay(100);
}What do you think is the problem?
Thank you.