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LED handling under Linux — The Linux Kernel documentation

In its simplest form, the LED class just allows control of LEDs from userspace. LEDs appear in /sys/class/leds/. The maximum brightness of the LED is defined in max_brightness file. The brightness file will set the brightness of the LED ( taking a ...

https://www.kernel.org/doc/html/latest/leds/leds-class.html  - 26k

LED subsystem - The Linux Kernel Archives

LED handling under Linux ======================== In its simplest form, the LED class just allows control of LEDs from userspace. LEDs appear in /sys/class/ leds/. The maximum brightness of the LED is defined in max_brightness file.

https://www.kernel.org/doc/Documentation/leds/leds-class.txt  - 6k

LinuxLED 制御 - Qiita

2018年9月10日 ... はじめに. LinuxでIoTデバイス開発をしていると、「LEDをこのパターンで点灯/消灯 したい」という場合があります。 この記事ではその方法を記載します。 点灯/消灯. まず、 対象のデバイスにどのようなLEDが定義されているかを確認しましょう。

https://qiita.com/masap/items/5734fe8e325ced76194e  - 57k

Linux LED Subsystem | fabiobaltieri

Sep 21, 2011 ... LEDs... Everyone likes that! Those little shiny electronic devices are mounted on any well-made electronic equipment to indicate at a glance its working status. They tell you when your network has activity, when your laptop ...

https://fabiobaltieri.com/2011/09/21/linux-led-subsystem/  - 81k

linux/drivers/leds at master · torvalds/linux · GitHub

Linux kernel source tree. Contribute to torvalds/linux development by creating an account on GitHub.

https://github.com/torvalds/linux/tree/master/drivers/leds  - 2020/01/23 - 262k

linux/led-triggers.c at master · torvalds/linux · GitHub

#include <linux/slab.h>. #include <linux/mm.h>. #include "leds.h". /*. * Nests outside led_cdev->trigger_lock. */. static DECLARE_RWSEM(triggers_list_lock);. LIST_HEAD(trigger_list);. /* Used by LED Class */. ssize_t led_trigger_write(struct  ...

https://github.com/torvalds/linux/blob/master/drivers/leds/l  - 161k

GPIO LEDS - ArmadeusWiki

Sep 7, 2017 ... You need to enable the leds-gpio driver in your kernel and some triggers like the "heartbeat". Configure Linux kernel: $ make linux-menuconfig. Device Drivers --- > --- LED support [*] LED Class Support *** LED drivers ...

http://www.armadeus.org/wiki/index.php?title=GPIO_LEDS  - 28k

Linux Kernel Interface To Finally Allow For Programmable LED ...

Oct 22, 2018 ... It's not often we get to talk about the LED drivers for the Linux kernel... Yes, the class of Linux kernel drivers to support controlling the brightness of LEDs via supported drivers and exposing that to user-space. With Linux ...

https://www.phoronix.com/scan.php?page=news_item&px=Linux-LE  - 32k

EBC Exercise 10 Flashing an LED - eLinux.org

Sep 3, 2018 ... Embedded Linux Class by Mark A. Yoder. 3.8 Kernel. This page is for the Bone ( Black or White) running the 3.8 Kernel. See EBC_Exercise_10_Flashing_an_LED_-_xM_WhiteBone for the White Bone or xM running 3.2.

https://elinux.org/EBC_Exercise_10_Flashing_an_LED  - 29k

Writing a Linux Kernel Module — Part 3: Buttons and LEDs

Apr 26, 2015 ... Example 3: Enhanced LED GPIO Driver: This example is used to flash an LED, which allows for a discussion on Linux kthreads. Essentially, an LED is flashed at a frequency using a kernel module, which can be controlled ...

http://derekmolloy.ie/kernel-gpio-programming-buttons-and-le  - 747k

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