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products:sbc:common:applications:gpio:led

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products:sbc:common:applications:gpio:led [2022/07/13 02:18]
hyphop [Device LED configurations] 		products:sbc:common:applications:gpio:led [2026/09/15 03:23] (current)
nick
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 ===== Introduction ===== ===== Introduction =====
 /* /*
-This document mainly describes the onboard LEDs. You will learn how to control the LEDs.+This page mainly describes the onboard LEDs and leads you to control the LEDs.
 */ */
-Onboard LED indicators usage under Linux . You will learn how to control the LEDs. +This page introduces the usage of Onboard LED indicators under Linux, and leads you to control the LEDs. 
  
 ===== Device LED configurations ===== ===== Device LED configurations =====
  
-|   Device ^ Node name              ^ LED color  ^ +^  Device            ^  Node name                  ^  LED color  ^ 
-^   VIM1/2 | /sys/class/leds/sys_led  | White      | +^  VIM1/2            |  /sys/class/leds/sys_led    |  White      | 
-^  VIM3/3L | /sys/class/leds/red_led  | Red        | +^  VIM3/3L           |  /sys/class/leds/red_led    |  Red        | 
-|      ::: | /sys/class/leds/sys_led  |            | +|  :::               |  /sys/class/leds/sys_led    |             | 
-^     VIM4 | /sys/class/leds/pwmled   |            | +^  VIM1S/VIM4/VIM-5  |  /sys/class/leds/pwmled     |  White      | 
-^    Edge1 | /sys/class/leds/red_led  |            | +^  Edge1             |  /sys/class/leds/red_led    |             | 
-|      ::: | /sys/class/leds/sys_led  |            |+|  :::               |  /sys/class/leds/sys_led    |             | 
 +^  Edge2/Edge-2L     |  /sys/class/leds/red_led    |  Red        | 
 +|  :::               |  /sys/class/leds/green_led  |  Green      | 
 +|  :::               |  /sys/class/leds/blue_led   |  Blue       |
  
  
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 ```shell ```shell
-$ echo heartbeat > /sys/class/leds/sys_led/trigger+$ echo heartbeat | sudo tee /sys/class/leds/sys_led/trigger
 ``` ```
  
-You can also try other parameters.+You can also experiment with other parameters.
  
-<tabbox VIM4>+<tabbox VIM1S/VIM4/VIM 5>
  
 We will take ''pwmled'' (white) as an example. We will take ''pwmled'' (white) as an example.
Line 77: Line 80:
  
 ```shell ```shell
-$ echo heartbeat > /sys/class/leds/pwmled/trigger+$ echo heartbeat | sudo tee /sys/class/leds/pwmled/trigger
 ``` ```
  
Line 84: Line 87:
 <tabbox Edge1> <tabbox Edge1>
  
-We will use sys_led as an example:+We will use ''sys_led'' as an example:
  
 **Turn off** **Turn off**
Line 106: Line 109:
  
 ```shell ```shell
-$ echo heartbeat > /sys/class/leds/sys_led/trigger+$ echo heartbeat | sudo tee /sys/class/leds/sys_led/trigger
 ``` ```
  
 You can also experiment with other parameters. You can also experiment with other parameters.
  
-<tabbox Edge2>+<tabbox Edge2/Edge-2L> 
 +We will use ''red_led'' as an example: 
 + 
 +**Turn off** 
 + 
 +Set the LED node parameter to ''none'' to turn off the LED: 
 + 
 +```shell 
 +$ echo none | sudo tee /sys/class/leds/red_led/trigger 
 +``` 
 + 
 +**Turn on** 
 + 
 +Set the LED node parameter to ''default-on'' to keep the LED permanently on: 
 + 
 +```shell 
 +$ echo default-on | sudo tee /sys/class/leds/red_led/trigger 
 +``` 
 +**Set LED heartbeat** 
 + 
 +Set the LED node parameter to ''heartbeat'', to make the LED flash with a heartbeat blink: 
 + 
 +```shell 
 +$ echo heartbeat | sudo tee /sys/class/leds/red_led/trigger 
 +``` 
 +The others are similar. 
 +  
 +You can also experiment with other parameters.
  
 </tabbox> </tabbox>
Last modified: 2022/07/13 02:18 by hyphop

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