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启用树莓派串口设备

参考连接： https://www.raspberrypi.com/documentation/computers/configuration.html#configure-uarts

对于树莓派5，要启用经典位置的串口需要在config.txt中添加以下配置 dtoverlay=uart0-pi5 uart0对应linux下的/dev/ttyAMA0，GPIO14和GPIO15。而默认的/dev/ttyAMA10是树莓派5主板上的专用串口。 不同的串口设备的默认GPIO号可以参考：https://github.com/raspberrypi/linux/blob/rpi-6.1.y/arch/arm/boot/dts/overlays/README

同时需要在/boot/firmware/cmdline.txt删除串口终端部分的内容（暂时不确定该串口终端是否对应主板上的专用串口）

运行dtoverlay -a查看系统可用的串口设备

uart0
uart0-pi5
uart1
uart1-pi5
uart2
uart2-pi5
uart3
uart3-pi5
uart4
uart4-pi5
uart5

启用树莓派的spi设备

参考连接： https://www.raspberrypi.com/documentation/computers/raspberry-pi.html#spi-overview

dtparam=spi=on
dtoverlay=spi0-2cs
dtoverlay=spi1-2cs

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