Posted on February 07, 2016 at 22:52Hello guys,
I 'm a new STM32 user that started using and learning STM32 MCUs developing .
I have circuit that I have a usart connection at usart2.
I can transmit data from MCU perfectly and also I can receive data easily but after a few receiving data from the usart , my receive interrupt doesn't run.
In addition , my project generated by STMCUBEMx.
my code is :
''
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{
__HAL_UART_FLUSH_DRREGISTER(&huart2);
HAL_UART_Transmit(&huart2,(_8bit_var*)'' interrupt 1 '',sizeof('' interrupt 1 ''),100);
HAL_UART_Receive_IT(&huart2,data,5);
}
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_USART2_UART_Init();
/* USER CODE BEGIN 2 */
HAL_UART_Receive_IT(&huart2,data,5);
//int cun = 0;
HAL_GPIO_WritePin(BT_KEY_GPIO_Port,BT_KEY_Pin,GPIO_PIN_RESET);
HAL_GPIO_WritePin(LED3_GPIO_Port,LED3_Pin,GPIO_PIN_SET);
HAL_GPIO_WritePin(LED4_GPIO_Port,LED4_Pin,GPIO_PIN_SET);
HAL_Delay(500);
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
HAL_GPIO_TogglePin(LED3_GPIO_Port,LED3_Pin);
delay_ms(100); //works exactly like HAL_Delay();
HAL_GPIO_TogglePin(LED4_GPIO_Port,LED4_Pin);
delay_ms(100);
HAL_UART_Transmit(&huart2,data,5,100);
delay_ms(20);
int cu;
for (cu = 0;cu <5;cu++)
{
data[cu] = 0;
}
}
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
if (HAL_GPIO_ReadPin(S4_GPIO_Port,S4_Pin)==GPIO_PIN_RESET)
{
HAL_GPIO_WritePin(BT_KEY_GPIO_Port,BT_KEY_Pin,GPIO_PIN_SET);
HAL_UART_Transmit(&huart2,(_8bit_var*)'' mydata '',sizeof('' mydata ''),100);
}
else{
HAL_UART_Transmit(&huart2,(_8bit_var*)'' our data '',sizeof('' our data ''),100);
}
}
/* USER CODE END 3 */
}
''
#stm32f103 #uart #stm32f103 #stm32 #no-hablo-hal #usart
