busybox microcom

/*************************************************************************
 *                       busybox microcom
 * 说明：
 *     有时候我们可能仅仅是在嵌入系统里使用一下串口，看是否有数据存在，
 * 而这种情况下，没有必要花大把的时间去自己搞一个命令行的串口工具，于是
 * busybox 提供的microcom就是一个很好的工具。
 *
 *                                        2016-2-2 深圳 南山平山村 曾剑锋
 ************************************************************************/

一、参考文章：
    . Linux Busybox Minicom简单用法
        http://blog.sina.com.cn/s/blog_67c9a89901019z3c.html
    . Busybox microcom
        https://lnguin.wordpress.com/2013/05/06/busybox-microcom/

二、busybox microcom help:
    root@android:/ # busybox microcom -h
    microcom: invalid option -- 'h'
    BusyBox v1.15.3 (-- :: CST) multi-call binary

    Usage: microcom [-d DELAY] [-t TIMEOUT] [-s SPEED] [-X] TTY

    Copy bytes for stdin to TTY and from TTY to stdout

    Options:
            -d      Wait up to DELAY ms for TTY output before sending every
                    next byte to it
            -t      Exit if both stdin and TTY are silent for TIMEOUT ms
            -s      Set serial line to SPEED
            -X      Disable special meaning of NUL and Ctrl-X from stdin

    root@android:/ # 

三、android下GPS模块测试：
    root@android:/ # busybox microcom -t  -s  /dev/ttymxc1
    $GPGGA,,,,,,,,,,M,0.0,M,,*
    $GPGSA,A,,,,,,,,,,,,,,,,*1E
    $GPGSV,,,,,,,,,,,,,,,,,,,*7C
    $GPGSV,,,,,,,,,,,,,,,,,,,*
    $GPGSV,,,,,,,,,,,,,,,,,,,*
    $GPRMC,,V,,,,,,,,,,N*
    $GPGGA,,,,,,,,,,M,0.0,M,,*
    $GPGSA,A,,,,,,,,,,,,,,,,*1E
    $GPRMC,,V,,,,,,,,,,N*
    $GPGGA,,,,,,,,,,M,0.0,M,,*
    $GPGSA,A,,,,,,,,,,,,,,,,*1E
    $GPRMC,,V,,,,,,,,,,N*
    $GPGGA,,,,,,,,,,M,0.0,M,,*
    $GPGSA,A,,,,,,,,,,,,,,,,*1E
    $GPRMC,,V,,,,,,,,,,N*
    $GPGGA,,,,,,,,,,M,0.0,M,,*
    $GPGSA,A,,,,,,,,,,,,,,,,*1E
    $GPRMC,,V,,,,,,,,,,N*
    $GPGGA,,,,,,,,,,M,0.0,M,,*
    $GPGSA,A,,,,,,,,,,,,,,,,*1E
    $GPGSV,,,,,,,,,,,,,,,,,,,*7C
    $GPGSV,,,,,,,,,,,,,,,,,,,*
    $GPGSV,,,,,,,,,,,,,,,,,,,*
    $GPRMC,,V,,,,,,,,,,N*
    $GPGGA,,,,,,,,,,M,0.0,M,,*
    $GPGSA,A,,,,,,,,,,,,,,,,*1E
    $GPRMC,,V,,,,,,,,,,N*
    $GPGGA,,,,,,,,,,M,0.0,M,,*
    $GPGSA,A,,,,,,,,,,,,,,,,*1E
    $GPRMC,,V,,,,,,,,,,N*
    $GPGGA,,,,,,,,,,M,0.0,M,,*
    $GPGSA,A,,,,,,,,,,,,,,,,*1E

四、exit(quit) microcom：
    Ctrl-x to exit.