/* USART able to wake up the MCU from deep-sleep mode.  */
void usart_wakeup_enable(uint32_t usart_periph)
/* USART able to wake up the MCU from deep-sleep mode.  */
void usart_wakeup_enable(uint32_t usart_periph)
{      
    USART_CTL0(usart_periph) |=USART_CTL0_UESM;
}