WhyCan Forum(哇酷开发者社区)

function ser {
    if   [ $# -eq 0 ]; then
        return
    elif [ $# -eq 1 ]; then
        port=/dev/ttyS$1
        baudrate=115200
    elif [ $# -eq 2 ]; then
        port=/dev/ttyS$1
        baudrate=$2
    fi

    echo "port: $port, baudrate: $baudrate"

    sudo chmod 666 $port
    sudo stty -F $port $baudrate
    sudo picocom -b $baudrate $port
}