Posted on April 17, 2015 at 10:48Hi there
I designed a print with a STM32F072CBT6 and connect with a Discovery Board.
First I designed the software on the Discovery Board. After that, i want to test the connection to the CBT6. My Code works fine on the first try but after disconnect, the mcu starts itself after 5ms, repeating itself and i cant connect with to stop an reprogram it. Is there a way to force the chip to reset/flash the rom?
My IDE is the free version of Keil
My Startup Code:
/* Includes ------------------------------------------------------------------*/
&sharpinclude ''stm32f0xx_hal.h''
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Private variables ---------------------------------------------------------*/
UART_HandleTypeDef huart1;
DMA_HandleTypeDef hdma_usart1_rx;
DMA_HandleTypeDef hdma_usart1_tx;
/* USER CODE BEGIN PV */
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_DMA_Init(void);
static void MX_USART1_UART_Init(void);
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
int main(void)
{
/* USER CODE BEGIN 1 */
uint8_t aTransmitBuffer[3];
aTransmitBuffer[0]=0x55;
aTransmitBuffer[1]=0xFF;
aTransmitBuffer[2]=0x32;
/* 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_USART1_UART_Init();
/* USER CODE BEGIN 2 */
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_6, GPIO_PIN_SET);
HAL_UART_Transmit_DMA(&huart1, &aTransmitBuffer[0], 3);
/* USER CODE END 2 */
/* USER CODE BEGIN 3 */
/* Infinite loop */
while (1)
{
}
/* USER CODE END 3 */
}
#external-reset
