1. 安装kermit
2. 在用户目录下添加配置文件 .kermrc
set line /dev/ttyS0
set speed 115200
set carrier-watch off
set handshake none
set flow-control none
robust
set file type bin
set file name lit
set rec pack 1000
set send pack 1000
set window 5
3. sudo kermit -c (注意串口线连接， 板子电源连接)