Solved
The function HAL_UART_RxCpltCallback won't be called in Nucleo F401RE
Hi!
I have a Nucleo F401RE that works great! But the problem I have is that the board cannot be call the function HAL_UART_RxCpltCallback after it has recieve its bytes.
I have:
- Using DMA
- Enable global interupt
- Using USART2
- Calling DMA inside HAL_UART_RxCpltCallback function
- Using STM32CubeIDE 1.1.0 and firwire 1.24.2
I'm expecting a LED lamp to light up, the one in the function below. But it does not light up because the function won't be called, why?
But when I try to send some bytes via CuteCom software, nothing happens. Here is a minimal C-code from me.
This code waits until it have got 41 bytes, then this function will be called.
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart) {
HAL_GPIO_WritePin(Digital0_GPIO_Port, Digital0_Pin, 1); // If this method be called, then light up LED lamp
// Convert ADC values to
TXData[0] = (uint8_t) (ADCValues[0] >> 8);
TXData[1] = (uint8_t) (ADCValues[0] & 0xFF);
TXData[2] = (uint8_t) (ADCValues[1] >> 8);
TXData[3] = (uint8_t) (ADCValues[1] & 0xFF);
TXData[4] = (uint8_t) (ADCValues[2] >> 8);
TXData[5] = (uint8_t) (ADCValues[2] & 0xFF);
TXData[6] = (uint8_t) (ADCValues[3] >> 8);
TXData[7] = (uint8_t) (ADCValues[3] & 0xFF);
TXData[8] = (uint8_t) (ADCValues[4] >> 8);
TXData[9] = (uint8_t) (ADCValues[4] & 0xFF);
TXData[10] = (uint8_t) (ADCValues[5] >> 8);
TXData[11] = (uint8_t) (ADCValues[5] & 0xFF);
// Send data to JLoggerServer in about 5 milliseconds
HAL_UART_Transmit(&huart2, TXData, sizeof(TXData) / sizeof(TXData[0]), 5);
// Listen for a new receive
HAL_UART_Receive_DMA(&huart2, RXData, sizeof(RXData) / sizeof(RXData[0]));
}My USART2 and DMA configuration.
/**
* @brief USART2 Initialization Function
* @param None
* @retval None
*/
static void MX_USART2_UART_Init(void)
{
/* USER CODE BEGIN USART2_Init 0 */
/* USER CODE END USART2_Init 0 */
/* USER CODE BEGIN USART2_Init 1 */
/* USER CODE END USART2_Init 1 */
huart2.Instance = USART2;
huart2.Init.BaudRate = 115200;
huart2.Init.WordLength = UART_WORDLENGTH_8B;
huart2.Init.StopBits = UART_STOPBITS_1;
huart2.Init.Parity = UART_PARITY_NONE;
huart2.Init.Mode = UART_MODE_TX_RX;
huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
huart2.Init.OverSampling = UART_OVERSAMPLING_16;
if (HAL_UART_Init(&huart2) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN USART2_Init 2 */
/* USER CODE END USART2_Init 2 */
}
/**
* Enable DMA controller clock
*/
static void MX_DMA_Init(void)
{
/* DMA controller clock enable */
__HAL_RCC_DMA2_CLK_ENABLE();
__HAL_RCC_DMA1_CLK_ENABLE();
/* DMA interrupt init */
/* DMA1_Stream5_IRQn interrupt configuration */
HAL_NVIC_SetPriority(DMA1_Stream5_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(DMA1_Stream5_IRQn);
/* DMA2_Stream0_IRQn interrupt configuration */
HAL_NVIC_SetPriority(DMA2_Stream0_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(DMA2_Stream0_IRQn);
}And at the main function. I'm calling these functions as well.
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_USART2_UART_Init();
MX_DMA_Init();
MX_ADC1_Init();
MX_TIM1_Init();
MX_TIM2_Init();
/* USER CODE BEGIN 2 */
// Enable ADC1 AND UART RX with DMA
HAL_ADC_Start_DMA(&hadc1, ADCValues, sizeof(ADCValues) / sizeof(ADCValues[0]));
HAL_UART_Receive_DMA(&huart2, RXData, sizeof(RXData) / sizeof(RXData[0]));The fields are declared as
uint32_t ADCValues[6];
uint8_t RXData[12 + 28 + 1]; // 12 = sliders, 28 = digitals, 1 = send state
uint8_t TXData[12];I hope this information helps. Else, ask for more.
Best regards
