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@weiweiwei 这个是匹配4b板
@weiweiwei 我是用 echo 115 > /sys/class/gpio/export这个指令弄的
@weiweiwei 这个export每次启动都需要重新运行的。你可以把这个命令写入/etc/rc.local开机自动运行。
@weiweiwei 参考如下文档 https://cool-pi.com/topic/72/coolpi-4b硬件扩展四-gpio/2