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树莓派模型分类-串行通讯

一.树莓派换国内软件源(buster版本)

镜像源地址: http://www.raspbian.org/RaspbianMirrors

sudo nano /etc/apt/sources.list   #编辑系统源文件

把原来的源注释,输入

deb http://mirrors.tuna.tsinghua.edu.cn/raspbian/raspbian/ buster main contrib non-free rpi
deb-src http://mirrors.tuna.tsinghua.edu.cn/raspbian/raspbian/ buster main contrib non-free rpi
#输入结束 crtl+O保存 crtl+X退出
sudo nano /etc/apt/sources.list.d/raspi.list  #修改系统源

注释原来的源,输入

deb http://mirrors.tuna.tsinghua.edu.cn/raspberrypi/ buster main ui
deb-src http://mirrors.tuna.tsinghua.edu.cn/raspberrypi/ buster main ui
#输入结束 crtl+o保存 crtl+x退出
sudo apt-get update&&upgrade         #完成源的更新软件包索引
                                     #修改pip源

二.配置python并安装必要库

设置python3为默认python

sudo update-alternatives --install /usr/bin/python python /usr/bin/python2 100
sudo update-alternatives --install /usr/bin/python python /usr/bin/python3 150

三.配置串口

sudo raspi-config

四.设置树莓派开机自启

sudo vim /etc/rc.local

五.通信协议

包头 校验和 包尾 | 数据
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单片机发送指令,树莓派识别并串口发送给单片机

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