/* USER CODE BEGIN PV */
/* Private variables
---------------------------------------------------------*/
uint8_t RxBuffer[50];
#define MAX_RECEIVE 4
volatile int i = 0;
/* USER CODE END PV */
/* USER CODE BEGIN 0 */
/**
* @brief Rx Transfer completed callback.
* @param huart UART handle.
* @retval None
*/
__weak void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{
/* Prevent unused argument(s) compilation warning */
UNUSED(huart);
/* NOTE : This function should not be modified, when
the callback is needed,
the
HAL_UART_RxCpltCallback can be implemented in the user file.
*/
i += 3;
HAL_UART_Receive_DMA(&huart2, &RxBuffer, MAX_RECEIVE);//sizeof(RxBuffer)); // definate max len of RxBuffer
}
/* USER CODE END 0 */
/* USER CODE BEGIN 2 */
char Retezec[] = "STM32L476 USART DMA
Rx test JFila\r\n";
HAL_UART_Transmit(&huart2, &Retezec, (uint16_t)sizeof(Retezec), 10);
HAL_UART_Receive_DMA(&huart2, &RxBuffer, MAX_RECEIVE);//sizeof(RxBuffer)); // definate max len of RxBuffer
// ETXI0 also interrupt DMA transfer
/* USER CODE END 2 */
/**
*
@brief This function handles EXTI line0 interrupt.
*/
void EXTI0_IRQHandler(void)
{
/* USER CODE BEGIN EXTI0_IRQn 0 */
volatile uint8_t RxCount = MAX_RECEIVE - huart2.hdmarx->Instance->CNDTR;
RxBuffer[RxCount] = 0;
HAL_UART_AbortReceive_IT(&huart2);
HAL_UART_Receive_DMA(&huart2, &RxBuffer, MAX_RECEIVE);
/* USER CODE END EXTI0_IRQn 0 */
HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_0);
/* USER CODE BEGIN EXTI0_IRQn 1 */
/* USER CODE END EXTI0_IRQn 1 */
}
