This may be off topic, but I have some notes on how to switch a GPIO pin to be an LED.
https://elinux.org/EBC_Exercise_17_Switching_a_GPIO_to_an_LED --Mark On Sunday, October 11, 2020 at 5:54:41 PM UTC-4 jonn...@gmail.com wrote: > I'm not sure what board you have or what kernel you are running, however > on a Beaglebone Black running a 4.19 kernel, the LED settings are located > in the bone-common.dtsi file: > Note: From the BBB schematic, led1 is connected to the Ethernet port, so > perhaps you are trying to control usr0 LED. > Ex: > /opt/source/dtb-4.19-ti/src/arm/am335x-bone-common.dtsi > > * leds {* > * pinctrl-names = "default";* > * pinctrl-0 = <&user_leds_s0>;* > > * compatible = "gpio-leds";* > > * led2 {* > * label = "beaglebone:green:usr0";* > * gpios = <&gpio1 21 GPIO_ACTIVE_HIGH>;* > * linux,default-trigger = "heartbeat";* > * default-state = "off";* > * };* > > * led3 {* > * label = "beaglebone:green:usr1";* > * gpios = <&gpio1 22 GPIO_ACTIVE_HIGH>;* > * linux,default-trigger = "mmc0";* > * default-state = "off";* > * };* > > * led4 {* > * label = "beaglebone:green:usr2";* > * gpios = <&gpio1 23 GPIO_ACTIVE_HIGH>;* > * linux,default-trigger = "cpu0";* > * default-state = "off";* > * };* > > * led5 {* > * label = "beaglebone:green:usr3";* > * gpios = <&gpio1 24 GPIO_ACTIVE_HIGH>;* > * linux,default-trigger = "mmc1";* > * default-state = "off";* > * };* > * };* > > Cheers, > > Jon > > > On Sun, Oct 11, 2020 at 12:34 PM Joshua Park <joshua....@gmail.com> wrote: > >> Also, I figure that I process is controlling the blinking of user LED 1 >> since that is the only one I cannot change. Can anyone tell me what this >> process is and if I can stop it from controlling LED 1? >> >> On Sunday, October 11, 2020 at 3:01:06 PM UTC-4 Joshua Park wrote: >> >>> Hi all, >>> >>> I am trying to change the user LEDs but I am unable to make permanent >>> changes to the files in */sys/devices/platform/leds/leds*. Can someone >>> help me out? >>> >>> Thanks in advance. >>> >> -- >> For more options, visit http://beagleboard.org/discuss >> --- >> You received this message because you are subscribed to the Google Groups >> "BeagleBoard" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to beagleboard...@googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/beagleboard/acfff9b2-a632-47a7-a4f0-29991e4475c5n%40googlegroups.com >> >> <https://groups.google.com/d/msgid/beagleboard/acfff9b2-a632-47a7-a4f0-29991e4475c5n%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/cf2d3944-7e0f-46c0-8bb3-59c4c0e84cd9n%40googlegroups.com.
