pro3288 Android5.1 开机后,红灯闪烁的app是在哪里
如题:有相关文档介绍更好。
led闪烁的功能,我们是通过驱动实现,没有app 在什么位置,我想研究下! kernel/drivers/rongpin/led-gpio.c at recovery_led/recovery <
[ 4331.488415] led_flash_status = 1
shell@rk3288_box:/sys/class $ cat recovery_led/recovery
[ 4333.623656] led_flash_status = 1
shell@rk3288_box:/sys/class $ cat recovery_led/recovery
[ 4334.076272] led_flash_status = 1
shell@rk3288_box:/sys/class $ cat recovery_led/recovery
[ 4334.715831] led_flash_status = 1
cho 2 1 recovery_led/recovery <
2 1 recovery_led/recovery
cho 2 1 > recovery_led/recovery <
[ 4360.634612] led_flash_status = 2
shell@rk3288_box:/sys/class $ echo 2 1 > recovery_led/recovery
[ 4363.084706] led_flash_status = 2
at recovery_led/recovery <
[ 4369.057425] led_flash_status = 2
shell@rk3288_box:/sys/class $ cat recovery_led/recovery
[ 4374.154764] led_flash_status = 2
cho 0 1 > recovery_led/recovery <
[ 4394.474408] led_flash_status = 0
shell@rk3288_box:/sys/class $
【疑问】:
这种echo,cat是shell的操作。
那这个recovery_led/recovery可以被app调用吗? app可以调用
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