/* This function handles External interrupt Line 0 request.  */
void EXTI0_IRQHandler(void)
/* This function handles External interrupt Line 0 request.  */
void EXTI0_IRQHandler(void)
{
  USART_SendData(USARTy, 0x102);
  while(USART_GetFlagStatus(USARTy, USART_FLAG_TXE) == RESET)
  {
  }
  EXTI_ClearITPendingBit(EXTI_Line0);
}