bool USART_PutChar(char c){

	bool result = false;

	CORE_EnterCriticalSection();
	result = RingBuffer_PutChar(&USART_RingBuffer_Tx, c);
	CORE_ExitCriticalSection();

	if(result == true)
	{
		__USART_ENABLE_IT(&UartHandle, USART_IT_TXE);
	}

	return result;
}