SFUART_IRQ_ENABLE
uart_setreg(bas, SFUART_IRQ_ENABLE, 0);
uart_setreg(bas, SFUART_IRQ_ENABLE, SFUART_IRQ_ENABLE_RXWM);
uart_setreg(bas, SFUART_IRQ_ENABLE, 0);
ie = uart_getreg(bas, SFUART_IRQ_ENABLE);
uart_setreg(bas, SFUART_IRQ_ENABLE, ie);
reg = uart_getreg(bas, SFUART_IRQ_ENABLE);
uart_setreg(bas, SFUART_IRQ_ENABLE, reg);
reg = uart_getreg(bas, SFUART_IRQ_ENABLE);
uart_setreg(bas, SFUART_IRQ_ENABLE, reg);
reg = uart_getreg(bas, SFUART_IRQ_ENABLE);
uart_setreg(bas, SFUART_IRQ_ENABLE, reg);