/* Select the SCK pin as the source of baud rate for the USART synchronous slave modes.  */
static void usart_set_sync_slave_baudrate(Usart *p_usart)
/* Select the SCK pin as the source of baud rate for the USART synchronous slave modes.  */
static void usart_set_sync_slave_baudrate(Usart *p_usart)
{
	p_usart->US_MR = (p_usart->US_MR & ~US_MR_USCLKS_Msk) |
			US_MR_USCLKS_SCK | US_MR_SYNC;
}