UARTMODIR
u32 modem = lpuart32_read(port, UARTMODIR)
lpuart32_write(port, modem, UARTMODIR);
lpuart32_write(port, modem, UARTMODIR);
val = lpuart32_read(&sport->port, UARTMODIR);
lpuart32_write(&sport->port, val, UARTMODIR);
modem = lpuart32_read(port, UARTMODIR);
lpuart32_write(port, modem & ~UARTMODIR_TXCTSE, UARTMODIR);
lpuart32_write(port, modem, UARTMODIR);