Am using HAL library but the reception interrupt only fires once.
I've tried debugging it but i still cant figure out where to start from.
Am not sure which status flag that is set so that i could re-enable it or disable it to make it run another round. The datasheet is a bit sheety coz STM isn't providing a detailed copy. Am using an STM32F303K8.
uint8_t rcvd, count = 0, reception_complete = FALSE;
char buffer[100];
int main(void)
{
HAL_Init();
SystemClockConfig();
UART2_Init();
__HAL_UART_ENABLE_IT(&huart2, UART_IT_RXNE);
while(1){
if(reception_complete == FALSE) {
HAL_UART_Receive_IT(&huart2, &rcvd, 1);
}
else {
ReturnProcessedString();
reception_complete = FALSE;
}
}
return 0;
}
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{
if (huart->Instance == USART2)
{
if(rcvd == '\r'){
reception_complete = TRUE;
buffer[count++] = '\r';
count = 0;
}else {
buffer[count++] = rcvd;
}
}
}
I had the same problem with you and had many tests in five days, but the results were not good. But I solved this problem with the help of someone I learned through someone' blog. So I want yout to share the solution. My problem was that I used printf in interrupt route and callback. This is wrong behaviour. Also, the debugger only works once. Therefore, the results received should be verified by the trasmit command. I used TX with UART3 and RX with UART6. If there was a lot of RX data, there was a problem with sending TX as it is, so I had to print the 100th data. I confirmed that 3000Bytes are working without any problem. If you want my test code, send me the following email address. nicehans72@gmail.com. I'll let you go.
main.c
volatile uint8_t rxd[10];
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();
/* USER CODE BEGIN Init */
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_UART7_Init();
MX_UART8_Init();
MX_USART1_UART_Init();
MX_USART2_UART_Init();
MX_USART3_UART_Init();
MX_USART6_UART_Init();
/* USER CODE BEGIN 2 */
HAL_UART_Receive_IT(&huart6, (uint8_t *)rxd, 1);
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
int a=0;
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *UartHandle)
{
a++;
if(UartHandle->Instance == USART6)
{
if (a%100==0)
HAL_UART_Transmit(&huart3, (uint8_t *)rxd, 1, 0xFFFF);
HAL_UART_Receive_IT(&huart6, (uint8_t *)rxd, 1);
}
}
static void MX_USART3_UART_Init(void)
{
/* USER CODE BEGIN USART3_Init 0 */
/* USER CODE END USART3_Init 0 */
/* USER CODE BEGIN USART3_Init 1 */
/* USER CODE END USART3_Init 1 */
huart3.Instance = USART3;
huart3.Init.BaudRate = 9600;
huart3.Init.WordLength = UART_WORDLENGTH_8B;
huart3.Init.StopBits = UART_STOPBITS_1;
huart3.Init.Parity = UART_PARITY_NONE;
huart3.Init.Mode = UART_MODE_TX_RX;
huart3.Init.HwFlowCtl = UART_HWCONTROL_NONE;
huart3.Init.OverSampling = UART_OVERSAMPLING_16;
huart3.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
huart3.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
if (HAL_UART_Init(&huart3) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN USART3_Init 2 */
/* USER CODE END USART3_Init 2 */
}
static void MX_USART6_UART_Init(void)
{
/* USER CODE BEGIN USART6_Init 0 */
/* USER CODE END USART6_Init 0 */
/* USER CODE BEGIN USART6_Init 1 */
/* USER CODE END USART6_Init 1 */
huart6.Instance = USART6;
huart6.Init.BaudRate = 9600;
huart6.Init.WordLength = UART_WORDLENGTH_8B;
huart6.Init.StopBits = UART_STOPBITS_1;
huart6.Init.Parity = UART_PARITY_NONE;
huart6.Init.Mode = UART_MODE_TX_RX;
huart6.Init.HwFlowCtl = UART_HWCONTROL_NONE;
huart6.Init.OverSampling = UART_OVERSAMPLING_16;
huart6.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
huart6.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
if (HAL_UART_Init(&huart6) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN USART6_Init 2 */
/* USER CODE END USART6_Init 2 */
}
stm32f7xx_it.c
void USART3_IRQHandler(void)
{
/* USER CODE BEGIN USART3_IRQn 0 */
/* USER CODE END USART3_IRQn 0 */
HAL_UART_IRQHandler(&huart3);
/* USER CODE BEGIN USART3_IRQn 1 */
/* USER CODE END USART3_IRQn 1 */
}
void USART6_IRQHandler(void)
{
/* USER CODE BEGIN USART6_IRQn 0 */
/* USER CODE END USART6_IRQn 0 */
//
HAL_UART_IRQHandler(&huart6);
/* USER CODE BEGIN USART6_IRQn 1 */
/* USER CODE END USART6_IRQn 1 */
}