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LED error codes

Hardware and peripherals

SunWukong April 1, 2019, 7:31pm 2

I’d forgotten and it just came back to me.

How to control the GPIO? Hardware and peripherals

For newer kernel, the LED is configured as heart beat device. You can not control it. You can control it with led trigger. cat /sys/class/leds/user-led2/trigger none rc-feedback kbd-scrolllock kbd-numlock kbd-capslock kbd-kanalock kbd-shiftlock kbd-altgrlock kbd-ctrllock kbd-altlock kbd-shiftllock kbd-shiftrlock kbd-ctrlllock kbd-ctrlrlock mmc0 mmc1 timer oneshot [heartbeat] backlight gpio cpu0 cpu1 cpu2 cpu3 cpu4 cpu5 default-on rfkill0 mmc2 rfkill1 rfkill2 For example, you can set it to emmc…

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