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  • sama5d3 开入测试

    root@sama5d3-linux:~ echo 20 > /sys/class/gpio/export
    root@sama5d3-linux:~ echo 16 > /sys/class/gpio/export
    root@sama5d3-linux:~ echo 12 > /sys/class/gpio/export
    root@sama5d3-linux:~ echo 10 > /sys/class/gpio/export
    root@sama5d3-linux:~ echo 14 > /sys/class/gpio/export
    root@sama5d3-linux:~ echo 4 > /sys/class/gpio/export
    root@sama5d3-linux:~ echo 2 > /sys/class/gpio/export
    root@sama5d3-linux:~ echo 0 > /sys/class/gpio/export
    root@sama5d3-linux:~ echo in > /sys/class/gpio/pioA20/direction
    root@sama5d3-linux:~ echo in > /sys/class/gpio/pioA16/direction
    root@sama5d3-linux:~ echo in > /sys/class/gpio/pioA12/direction
    root@sama5d3-linux:~ echo in > /sys/class/gpio/pioA10/direction
    root@sama5d3-linux:~ echo in > /sys/class/gpio/pioA14/direction
    root@sama5d3-linux:~ echo in > /sys/class/gpio/pioA4/direction
    root@sama5d3-linux:~ echo in > /sys/class/gpio/pioA2/direction
    root@sama5d3-linux:~ echo in > /sys/class/gpio/pioA0/direction
    root@sama5d3-linux:~ cat /sys/gpio/pioA20/value
    cat: can't open '/sys/gpio/pioA20/value': No such file or directory
    root@sama5d3-linux:~ cat /sys/class/gpio/pioA20/value
    1
    root@sama5d3-linux:~ cat /sys/class/gpio/pioA16/value
    1
    root@sama5d3-linux:~ cat /sys/class/gpio/pioA12/value
    1
    root@sama5d3-linux:~ cat /sys/class/gpio/pioA10/value
    1
    root@sama5d3-linux:~ cat /sys/class/gpio/pioA14/value
    1
    root@sama5d3-linux:~ cat /sys/class/gpio/pioA4/value
    1
    root@sama5d3-linux:~ cat /sys/class/gpio/pioA2/value
    1
    root@sama5d3-linux:~ cat /sys/class/gpio/pioA0/value
    1

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  • 原文地址:https://www.cnblogs.com/zym0805/p/4835712.html
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