/* Check if the received data are ready. Check if Data have been received and loaded into USART_RHR.  */
uint32_t usart_is_rx_ready(Usart *p_usart)
/* Check if the received data are ready. Check if Data have been received and loaded into USART_RHR.  */
uint32_t usart_is_rx_ready(Usart *p_usart)
{
	return (p_usart->US_CSR & US_CSR_RXRDY) > 0;
}