1.修改配置
sudo nano /boot/config.txt
在最后一行添加:
enable_uart =1
2.下载安装ckermit
sudo apt-get install ckermit
在用户目录下添加配置
sudo nano ~/.kermrc
--------------------------------
set line /dev/ttyUSB0
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 windows 5
-------------------------------
3.硬件引出UART口,打开串口调试工具,设置一下波特率等参数,reboot树莓派 ,就可以看到打印信息了
遇到问题,参考:http://blog.sina.com.cn/s/blog_946b3ae2010108an.html