void MyIsrFunction (void)
{
    HAL_UART_Transmit(&huart2, (uint8_t *)aRxBuffer, 1, 0xFFFF);
    CBUF_Push(RxDataBuffer, aRxBuffer[0]);
    HAL_UART_Receive_IT(&huart2, (uint8_t *)aRxBuffer, 1);
}