WMCOM_CNWRITE_1
WMCOM_CNWRITE_1(UARTFCR, wmcom_cflag2fcr(cflag));
WMCOM_CNWRITE_1(UARTCON, CON_UARTEN | CON_IRTXM);
WMCOM_CNWRITE_1(UARTCON, CON_UARTEN);
WMCOM_CNWRITE_1(UARTDR, c);