【linux】openwrt安装和使用minicom进行串口通信

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【linux】openwrt安装和使用minicom进行串口通信

查询软件源里面有没有minicom包

opkg list先看一下软件源里面有没有minicom包

安装 minicom
有的话就直接安装 opkg install minicom，安装完后执行minicom -v查看版本信息确认是否安装成功
没有话联网更新opkg, 操作如下：

1. root@SunLink:~# opkg update
   
2. Downloading [url]http://downloads.openwrt.org/chaos_calmer/15.05.1/ramips/mt7628/packages/base/Packages.gz.[/url]
   
3. Updated list of available packages in /var/opkg-lists/chaos_calmer_base.
   
4. Downloading [url]http://downloads.openwrt.org/chaos_calmer/15.05.1/ramips/mt7628/packages/base/Packages.sig.[/url]
   
5. Signature check passed.
   
6. Downloading [url]http://downloads.openwrt.org/chaos_calmer/15.05.1/ramips/mt7628/packages/luci/Packages.gz.[/url]
   
7. Updated list of available packages in /var/opkg-lists/chaos_calmer_luci.
   
8. Downloading [url]http://downloads.openwrt.org/chaos_calmer/15.05.1/ramips/mt7628/packages/luci/Packages.sig.[/url]
   
9. Signature check passed.
   
10. Downloading [url]http://downloads.openwrt.org/chaos_calmer/15.05.1/ramips/mt7628/packages/management/Packages.gz.[/url]
    
11. Updated list of available packages in /var/opkg-lists/chaos_calmer_management.
    
12. Downloading [url]http://downloads.openwrt.org/chaos_calmer/15.05.1/ramips/mt7628/packages/management/Packages.sig.[/url]
    
13. Signature check passed.
    
14. Downloading [url]http://downloads.openwrt.org/chaos_calmer/15.05.1/ramips/mt7628/packages/packages/Packages.gz.[/url]
    
15. Updated list of available packages in /var/opkg-lists/chaos_calmer_packages.
    
16. Downloading [url]http://downloads.openwrt.org/chaos_calmer/15.05.1/ramips/mt7628/packages/packages/Packages.sig.[/url]
    
17. Signature check passed.
    
18. Downloading [url]http://downloads.openwrt.org/chaos_calmer/15.05.1/ramips/mt7628/packages/routing/Packages.gz.[/url]
    
19. Updated list of available packages in /var/opkg-lists/chaos_calmer_routing.
    
20. Downloading [url]http://downloads.openwrt.org/chaos_calmer/15.05.1/ramips/mt7628/packages/routing/Packages.sig.[/url]
    
21. Signature check passed.
    
22. Downloading [url]http://downloads.openwrt.org/chaos_calmer/15.05.1/ramips/mt7628/packages/telephony/Packages.gz.[/url]
    
23. Updated list of available packages in /var/opkg-lists/chaos_calmer_telephony.
    
24. Downloading [url]http://downloads.openwrt.org/chaos_calmer/15.05.1/ramips/mt7628/packages/telephony/Packages.sig.[/url]
    
25. Signature check passed.
    
26. root@SunLink:~# opkg install minicom
    
27. Installing minicom (2.7-1) to root...
    
28. Downloading [url]http://downloads.openwrt.org/chaos_calmer/15.05.1/ramips/mt7628/packages/packages/minicom_2.7-1_ramips_24kec.ipk.[/url]
    
29. Configuring minicom.
    

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查看开发板串口设备

1. root@SunLink:~# ls /dev/tty*
   
2. /dev/tty      /dev/ttyS0    /dev/ttyS1    /dev/ttyS2    /dev/ttyUSB0  /dev/ttyUSB1  /dev/ttyUSB2  /dev/ttyUSB3
   

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注：
/dev/ttyS0 /dev/ttyS1 /dev/ttyS2 MT7628开发自带的串口


UART2与网口1复用说明
UART2与网口1不能同时使用，只能2选1
/dev/ttyUSB0  /dev/ttyUSB1  /dev/ttyUSB2  /dev/ttyUSB3 是EC20 4G模块枚举的串口，下期讲用4G模块拔打电话时，会用到。
用minicom进行串口通信
我们这次用到的串口是ttyS1，执行minicom -s ttyS1 进行配置，选择serial port setup菜单
配置相应的波特率，关闭流控


然后保存配置，save setup as ttyS1，保存完后选择Exit，进入到minicom主界面


PC端打串口调试助手，就可以测试串口通信了

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minicom 退出:
ctrl+A  Z X