UART2 receive on interrupt examples required for STM32F103C8T6...

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.

Can you please give me any example code???

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

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.

 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
 }
 
}