serialposix.py 文件源码

def set_special_baudrate(port, baudrate):
        # right size is 44 on x86_64, allow for some growth
        import array
        buf = array.array('i', [0] * 64)

        try:
            # get serial_struct
            FCNTL.ioctl(port.fd, TCGETS2, buf)
            # set custom speed
            buf[2] &= ~TERMIOS.CBAUD
            buf[2] |= BOTHER
            buf[9] = buf[10] = baudrate

            # set serial_struct
            res = FCNTL.ioctl(port.fd, TCSETS2, buf)
        except IOError, e:
            raise ValueError('Failed to set custom baud rate (%s): %s' % (baudrate, e))