UART2 receive on interrupt examples required for STM32F103C8T6...

[JPanc.1]

Can any body can give example for receive data on interrupt on uart??

I am using TRUE studio and CubeMx and STM32F103C8T6 device . I successfully tested UART-2 Transmit. It works perfectly.

But when I try to receive on interrupt I didn't get the data. i have tries many times as suggested in community but not get any success. Please somebody help me with this

[e-zeki]

Hi,

I'm assuming you've tested transmit function with polling receive.

Did you initialize interrupt for reception correctly?

You need to start Receive IT by HAL_UART_Receive_IT()

then if you like you can use

HAL_UART_RxCpltCallback() for reception or directly write down in to IRQ Handler.

[JPanc.1]

Can you please give me any example code???

[JPanc.1]

I have tried it many times but not get any success.....

I think I miss any step...I am trying from 4-5 days but not getting any success

[After Forever]

Why don't you check the Cube examples? Install STM32F1 package in Cube, open Help->Updater Settings and press the Browse button to open you repository directory.

Then, for example, go to STM32Cube_FW_F1_V1.7.0/Projects/STM32F103RB-Nucleo/Examples/UART/UART_TwoBoards_ComIT to find UART example which uses interrupts.

[JPanc.1]

  MX_USART2_UART_Init();
  __HAL_UART_ENABLE_IT(&huart2,UART_IT_RXNE);
 
 
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{
   uint8_t i;
    if (huart->Instance == USART2)  //current UART
        {
        if (Rx_indx==0) {for (i=0;i<100;i++) Rx_Buffer[i]=0;}   //clear Rx_Buffer before receiving new data
 
        if (Rx_data[0]!=13) //if received data different from ascii 13 (enter)
            {
            Rx_Buffer[Rx_indx++]=Rx_data[0];    //add data to Rx_Buffer
            }
        else            //if received data = 13
            {
            Rx_indx=0;
            Transfer_cplt=1;//transfer complete, data is ready to read
            }
 
        HAL_UART_Receive_IT(&huart2, Rx_data, 1);   //activate UART receive interrupt every time
        }
 
}