Posted on December 02, 2015 at 16:27
Hi,
I'm writing an app which will embed its own DFU.
In CubeMx gui, I checked usb as a DFU class.
Here's what I get in the main function:
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_DMA_Init();
MX_ADC_Init();
MX_CRC_Init();
MX_I2C2_Init();
MX_IWDG_Init();
MX_RTC_Init();
MX_SPI1_Init();
MX_SPI2_Init();
MX_TIM2_Init();
MX_TIM3_Init();
MX_TIM4_Init();
MX_TIM5_Init();
MX_TIM11_Init();
MX_UART4_Init();
MX_UART5_Init();
MX_USART1_UART_Init();
MX_USART2_UART_Init();
MX_USART3_UART_Init();
MX_USB_DEVICE_Init();
/* USER CODE BEGIN 2 */
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while
(1) {
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
The point is: I did not find any elegant way to initialize or not the usb port
depending on the user action (typically press a button at boot).
Suggestion : put the MX_USB_DEVICE_Init() at the end of the initialization
process (as it seems to be) and add a user code section before and after it, in which
we will be able to check the custom user action.
Of course, if you have a cool way to do it with the current generated code, I'll
be pleased to use it ! ;)
Best regards
Julien
