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

Revision as of 10:36, 5 August 2016 (view source) Clayder.huang (talk | contribs) (→‎VESA/JEDIA) ← Older edit		Revision as of 10:46, 5 August 2016 (view source) Clayder.huang (talk | contribs) (→‎VESA/JEDIA) Newer edit →
Line 26:		Line 26:
	Example		Example
−	==VESA/JEDIA==	+	==SPWG/JEDIA==
−	Video Electronics Standards Association (VESA)	+	Standard Panels Working Group '''(SPWG)'''
−	Japan Electronic Industry Development Association(JEIDA)	+	Japan Electronic Industry Development Association '''(JEIDA)'''
−	How to setting VESA/JEIDA mode in RISC?	+	How to setting '''SPWG/JEIDA''' mode in RISC?
		+
		+	Modify Register '''GPR(IOMUXC_GPR2)'''value
		+
		+	Address :  0x020E0008(h)
		+
		+	Value : BIT6 and BIT8 set "0" '''(SPWG)'''
		+
		+	BIT6 and BIT8 set "1" '''(JEIDA)'''
		+
	:[[Image:JEIDA1.png|350px]]		:[[Image:JEIDA1.png|350px]]
	:[[Image:JEIDA2.png|350px]]		:[[Image:JEIDA2.png|350px]]

---

Revision as of 10:46, 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

SPWG/JEDIA

Standard Panels Working Group (SPWG)

Japan Electronic Industry Development Association (JEIDA)

How to setting SPWG/JEIDA mode in RISC?

Modify Register GPR(IOMUXC_GPR2)value

Address : 0x020E0008(h)

Value : BIT6 and BIT8 set "0" (SPWG)

       BIT6 and BIT8 set "1" (JEIDA)

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