Posted on November 03, 2016 at 17:41
Hi m.anjana,
First you should check if the NVIC is configured forUSART1_IRQn insidestm32f1xx_hal_msp.c. If it is not, you should enable the NVIC interrupt in the USART configuration window of CubeMX.
Second , you should initialize the data buffer as global and not local , the you pass it as pointer inside the USART interrupt transfer start function . The receive should start after checking the transfer has really complete by managing a ready flag. See example below:
/*- Start the transmission process */
if(HAL_UART_Transmit_IT(&UartHandle, (uint8_t*)DataTX, DataTX_SIZE)!= HAL_OK)
{
Error_Handler();
}
/*##-3- Wait for the end of the transfer ###################################*/
while (UartReady != SET)
{
}
/* Reset transmission flag */
UartReady = RESET;
/*##-4- Put UART peripheral in reception process ###########################*/
if(HAL_UART_Receive_IT(&UartHandle, (uint8_t *)DataRX, DataRX_SIZE) != HAL_OK)
{
Error_Handler();
}
Third, you manage the UartReady flag inside the Tx call back as follow :
void HAL_UART_TxCpltCallback(UART_HandleTypeDef *UartHandle)
{
/* Set transmission flag: transfer complete */
UartReady = SET;
}
-Hannibal-
