Posted on October 24, 2016 at 17:02Ok..I uninstalled the old VCP driver and installed the new one, so now windows recognizes my COM Port, but I can't open a serial connection via puTTy to it. although I use the right serial connection configuration..
Any ideas?
From: brammer.benjamin
Posted: Monday, October 24, 2016 4:41 PM
Subject: STM32446RE Nucleo as a USB CDC device
Hi Guys,
i try to experiment a bit with the USB CDC library. Sadly I don't get it to work out of the box after I configured everything in STMCubeMX.
I tried to learn something from the F4 firmware libraray tutorial projects on CDC. But I find it quite complicated to understand, since there's a complete different board used and also an USART used for communicating.
Basically I want to configure my STM446RE to behave as a USB CDC device with messages send over parallel port as a VCP device. But when I run the program Windows doesn't recognize my new device. Just the one created by the STV/Link debugger.
To send data over USB I added a message which I send in main while(1) loop:
/* USER CODE BEGIN 0 */
uint8_t HiMsg[] = ''hello HHI\r\n'';
/* USER CODE END 0 */
int main(void)
{
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration----------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* Configure the system clock */
SystemClock_Config();
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_TIM3_Init();
MX_TIM2_Init();
MX_USB_DEVICE_Init();
MX_USART3_UART_Init();
/* USER CODE BEGIN 2 */
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
CDC_Transmit_FS(HiMsg, strlen(HiMsg));
HAL_Delay(500);
}
/* USER CODE END 3 */
}
Would be glad if someone could help.
Thanks!
