CODEWITHSUNDEEP
stm32uart
Harzarics
Harzarics

Reputation: 101

hal_uart_transmit_it is not working(No interrupt occurs)

I am trying to do uart communication. However, HAL_UART_TxCpltCallback function does not work.

Also, USART1_IRQHandler is not executed. I think there is a setting that enables uart and interrupt, but

I don't know. The source code is as follows. If you have more information, please tell me. Thanks.

        /// main source

        HW_UART_Init( );
        uint8_t init_ment[60] = "\n\rWelcome to RF Test program\n\r";
        strcpy(uart1_txbuffer,init_ment);
        HAL_UART_Transmit_IT(&huart1, uart1_txbuffer, 30);
        HAL_Delay(50);
        InitQueue(&queue);
        HAL_UART_Receive_IT(&huart1, uart1_rxbuffer, 1);
        HAL_Delay(1);


       void HW_UART_Init( void )
        {
 

             /* USER CODE END USART1_Init 1 */
             huart1.Instance = USART1;
             huart1.Init.BaudRate = 19200;
             huart1.Init.WordLength = UART_WORDLENGTH_8B;
             huart1.Init.StopBits = UART_STOPBITS_1;
             huart1.Init.Parity = UART_PARITY_NONE;
             huart1.Init.Mode = UART_MODE_TX_RX;
             huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
             huart1.Init.OverSampling = UART_OVERSAMPLING_16;
             huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
             huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
             if (HAL_UART_Init(&huart1) != HAL_OK)
             {
                   Error_Handler();
             }
              /* USER CODE BEGIN USART1_Init 2 */


           }

Upvotes: 0

Views: 2890

Answers (2)

Ali Asghar Pourostad
Ali Asghar Pourostad

Reputation: 11

If you are using cubeMX for initializing your MCU, there is a tab in USART section "NVIC Settings" which you can enable USART1 global interrupt over there.
It adds these two lines in your code, in stm32f4xx_hal_msp.c file.

HAL_NVIC_SetPriority(USART1_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(USART1_IRQn);

I suggest you to use cubeMX.

Upvotes: 1

karamelekrobotics
karamelekrobotics

Reputation: 77

If you do your own configuration without cube mx, first you should check if you add convenient uart files into your project. STM32 Cube defines IRQ Handlers inside the "xxxx_it.c" file, so possibly you dont have it. On the other hand necessary NVIC configurations are also done by Cube MX.

I suggest you to use Cube MX, then you you can find what is wrong here. In your code snippet there seem nothing wrong.

Upvotes: 0

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