Hello guys. I am struggling to run flashlight on sc66 development board. sc66 uses flashlight power management pins in source codes, but I want to cancel power management pins and use gpio72 in gpio77 torch for flash. How can I do that. Flashlight is controlled by gpio in SC20, but I wrote the codes there but it didn’t work.
If you do not understand, please write, I will try to explain better.
maybe these two pin have been used for another purpose…
How you check it?
You can check it with
/sys/kernel/debug/pinctrl/100000.pinctrl/pinmux-pins
Hello, can you please explain to me what to do?
I want it to work with gpio pins, not power management pins.
@Bean.Wang-Q
From that, at least the GPIO 77 is not used for any other purpose.
Do you use the EVB from Quectel？I 'll try to test it…
I think you can try to test the GPIO72 and GPIO75 by using sysfs.
like
GPIO Sysfs Interface for Userspace — The Linux Kernel documentation
Yes im use evb. SDM660 SoC. When I set the pin high with ECHO, gpio72 works, but gpio77 does not allow it. On the gpio 72, it only flashes for 2 seconds and then turns off.