当前位置：网站首页>Rk3308 key and LED light

Rk3308 key and LED light

2022-06-10 15:59:00 【Cat teacher NIA~】

Hardware schematic diagram

LED Indicator light

Used on the microphone array daughter board 12 star RGB Light as effect indicator . The user can go through I2C Bus configuration LED Lamp drive IC To realize the lighting effect in different scenes .
Insert picture description here

Key Key

Insert picture description here
Five control keys are integrated into the microphone array daughter board , Respectively ： To control the volume increase or decrease VOL- and VOL+、 prohibit MIC Recorded
MIC_MUTE、 Switch device mode MODE、 Control the device to play or pause Play/Pause

POWER Control

Insert picture description here

GPIO To choose GPIO0 Of pin, Generally, when the master is asleep ,GPIO0 The controller works with electricity , The others are out of power , Can't wake up （ Set interrupt ,linux Under the system , To be in dts Set in ）
Sleep （suspend） Refer to , The system freezes the process , Then suspend the power supply of the equipment in turn to stop working , Enter low power mode ; Sleep Command ：echo mem > /sys/power/state
Wake up the （resume） Refer to , Recover from sleep mode to normal working mode .EVB On power The key has a wake-up function , Press down power key , The system will wake up

Insert picture description here

Configuration on the software

Key Key Configuration of

buildroot Compile configuration

1. Source path ：Y:\hxy\RK3308\sdk-1.5\buildroot\output\rockchip_rk3308_release\build\input-event-daemon-v0.1.3

2. Code directory description ：

input-event-daemon.c Monitor kernel event event , Then respond to the corresponding event according to the configuration file
target\etc\input-event-daemon.conf Key event settings

3.buildroot Add the corresponding compilation configuration ：

#cd buildroot/output/rockchip_rk3308_release
#make menuconfig
choice Target packages -> Hardware handling -> input-event-daemon
#make input-event-daemon-dirclean && make input-event-daemon-rebuild
#./build.sh

Yes conf File configuration and writing shell Script

input-event-daemon.conf The file configuration is as follows （Keys Your name is not written casually , Yes. input-event-table.h Configured in ）：
Linux in && and &,| and ||

[Global]
listen = /dev/input/event0
listen = /dev/input/event1
#listen = /dev/input/event2
#listen = /dev/input/event3

[Keys]
MODE          = ./data/LedTest 2&&echo 1 > /sys/class/leds/led33/brightness&&echo 0 > /sys/class/leds/led14/brightness&&source /data/openAPP.sh
PLAY		  = echo "-----Press PLAY-----"
MUTE          = ./data/LedTest 2&&echo 0 > /sys/class/leds/led33/brightness&&echo 1 > /sys/class/leds/led14/brightness&&source /data/closeAPP.sh
VOLUMEDOWN	  = export ALSA_LIB_ADD_GAIN=2
VOLUMEUP      = ./data/LedTest 2&&export ALSA_LIB_ADD_GAIN=4&&echo 1 > /sys/class/leds/led4/brightness
#PLAY = source /data/closeAPP.sh
#MUTE = echo "-----Press MUTE-----"
#POWER = echo mem > /sys/power/state
#MUTE = amixer -q set Master mute
#FN+VOLUMEUP = factory_reset_cfg
#CTRL+ALT+ESC = beep
#FN = softapServer Rockchip-Echo-123 &

[Switches]
RADIO:0 = ifconfig wlan0 down

[Idle]
1h 30m = vbetool dpms off
reset  = vbetool dpms on

There are... On the small board 12 individual LED The lamp , From the triangle marked LED Start , according to green 、 red 、 blue The order of （ Corresponding led1、led2、led3 ） Sort

openAPP.sh The configuration is as follows ：（ Be careful not to end with Enter Key end , Otherwise, it will report a mistake ）

#!/bin/sh
echo "open APP"
./data/rk_hw_vad

closeAPP.sh The configuration is as follows ：

#!/bin/sh
echo "close APP"
kill -9 $(pidof rk_hw_vad)

LED Lamp configuration

echo 1 > /sys/class/leds/led33/brightness Turn on the blue light （ Changing the number size can adjust the brightness 0~255）
echo 0 > /sys/class/leds/led14/brightness Put out the red light
echo 1 > /sys/class/leds/led4/brightness Turn on the green light