Difference between revisions of "IoTGateway/Features/Linux/Peripheral"

Revision as of 04:25, 3 August 2016 (view source) Daniel.hung (talk | contribs) ← Older edit		Revision as of 04:34, 5 August 2016 (view source) Weichih.lin (talk | contribs) (add IR control) Newer edit →
Line 52:		Line 52:
	==Watchdog==		==Watchdog==
	Example		Example
		+
		+	==IR==
		+	To decode the infrared signals and provide an uniform interface
		+	lircd -d /dev/lirc0
		+
		+	used parameters:
		+	-d --device=device    read from given device
		+	-u --uinput          generate Linux input events
		+
		+	Executes commands on an IR signal decoded by lircd,
		+	irexec -d /devlirc0
		+
		+	Note:
		+	if show these message after running lircd
		+	lircd: can't open or create /var/run/lirc/lircd.pid
		+	lircd: No such file or directory
		+	It has to add the "/var/run/lirc" folder
		+	mkdir /var/run/lirc
		+
		+	How to debug:
		+
		+	1. To check that signals are decoded correctly
		+	mode2 -d /dev/lirc0
		+	It repeats to show "space" and "pulse" while clicking a control button
		+	space 8451531
		+	pulse 476
		+
		+	2. To check input events.
		+
		+	First, It must add the parameter,"-u", in lircd command
		+	lircd -d /dev/lirc0 -u
		+	It will register at inputX,
		+	input: lircd as /devices/virtual/input/input1
		+	Run evtest to check events
		+	evtest -d /dev/input/event1

---

Revision as of 04:34, 5 August 2016

ADC

analogue to digital converters

Backlight

Enable/read and modify backlight brightness

Camera

Example

CAN Bus

CAN subsystem

CPU Frequency

Example

Ethernet

Example

Framebuffer

Example

GPIO

Example

I2C

Example

JEDIA

Example

One Wire

Example

RTC

Example

SATA

Example

SD/MMC

Example

SPI

Example

UART

Example

USB

Example

Watchdog

Example

IR

To decode the infrared signals and provide an uniform interface

lircd -d /dev/lirc0

used parameters:

-d --device=device    read from given device
-u --uinput           generate Linux input events

Executes commands on an IR signal decoded by lircd,

irexec -d /devlirc0

Note: if show these message after running lircd

lircd: can't open or create /var/run/lirc/lircd.pid
lircd: No such file or directory

It has to add the "/var/run/lirc" folder

mkdir /var/run/lirc

How to debug:

1. To check that signals are decoded correctly

mode2 -d /dev/lirc0

It repeats to show "space" and "pulse" while clicking a control button

space 8451531
pulse 476

2. To check input events.

First, It must add the parameter,"-u", in lircd command

lircd -d /dev/lirc0 -u

It will register at inputX,

input: lircd as /devices/virtual/input/input1 

Run evtest to check events

evtest -d /dev/input/event1