I am trying to use USB port on a Nucleo-F303ZE board as CDC. I am using the latest CubeMX IDE. To get the PC to recognize USB device, I had to modify the HAL_PCDEx_SetConnectionState function as follows to get PC to recognize the USB device:
void HAL_PCDEx_SetConnectionState(PCD_HandleTypeDef *hpcd, uint8_t state)
{
/* USER CODE BEGIN 6 */
HAL_GPIO_WritePin(USB_PowerSwitchOn_GPIO_Port,USB_PowerSwitchOn_Pin,state);
/* USER CODE END 6 */
}
However, the USB CDC_DeInit_FS is not getting called when the USB cable is disconnected. It is getting called when the cable is re-inserted. Re-inserting the USB cable triggers the USB_LP_CAN_RX0_IRQ which eventually calls the CDC DeInit.
void USB_LP_CAN_RX0_IRQHandler(void)
{
/* USER CODE BEGIN USB_LP_CAN_RX0_IRQn 0 */
/* USER CODE END USB_LP_CAN_RX0_IRQn 0 */
HAL_PCD_IRQHandler(&hpcd_USB_FS);
/* USER CODE BEGIN USB_LP_CAN_RX0_IRQn 1 */
/* USER CODE END USB_LP_CAN_RX0_IRQn 1 */
}
After re-inserting the USB cable, the DeInit is called followed by an Init.
What do I need to change to get the Nucleo to recognize the USB cable has been disconnected?
Thanks
