We're no longer updating This wiki!!

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision
Previous revision
en:vu8c_backlightcontrol [2017/03/20 09:46]
codewalker [1. Download script]
en:vu8c_backlightcontrol [2017/06/09 15:39]
codewalker
Line 22: Line 22:
 path="/​sys/​class/​gpio"​ path="/​sys/​class/​gpio"​
  
-echo 234 > $path/​export 
 echo 214 > $path/​export echo 214 > $path/​export
  
-echo out > $path/​gpio234/​direction 
 echo out > $path/​gpio214/​direction echo out > $path/​gpio214/​direction
-echo 0 > $path/​gpio234/​value 
 echo 0 > $path/​gpio214/​value echo 0 > $path/​gpio214/​value
  
-chown odroid $path/​gpio234/​value 
 chown odroid $path/​gpio214/​value chown odroid $path/​gpio214/​value
 </​code>​ </​code>​
Line 40: Line 36:
  
 echo 97 > $path/​export echo 97 > $path/​export
-echo 108 > $path/​export 
  
 echo out > $path/​gpio97/​direction echo out > $path/​gpio97/​direction
-echo out > $path/​gpio108/​direction 
 echo 0 > $path/​gpio97/​value echo 0 > $path/​gpio97/​value
-echo 0 > $path/​gpio108/​value 
  
 chown odroid $path/​gpio97/​value chown odroid $path/​gpio97/​value
-chown odroid $path/​gpio108/​value 
 </​code>​ </​code>​
  
Line 82: Line 74:
         # backlight off first          # backlight off first 
         echo 1 > $path/​gpio214/​value         echo 1 > $path/​gpio214/​value
-        echo 1 > $path/​gpio234/​value 
         cur_stat=$stat         cur_stat=$stat
 elif [ "​$stat"​ == "​On"​ -a "​$cur_stat"​ == "​Off"​ ]; then elif [ "​$stat"​ == "​On"​ -a "​$cur_stat"​ == "​Off"​ ]; then
Line 110: Line 101:
         echo "​monitor goes to Off"         echo "​monitor goes to Off"
         echo 1 > $path/​gpio97/​value         echo 1 > $path/​gpio97/​value
-        echo 1 > $path/​gpio108/​value 
         cur_stat=$stat         cur_stat=$stat
 elif [ "​$stat"​ == "​On"​ -a "​$cur_stat"​ == "​Off"​ ]; then elif [ "​$stat"​ == "​On"​ -a "​$cur_stat"​ == "​Off"​ ]; then
         echo "​monitor turns back On"         echo "​monitor turns back On"
-        echo 0 > $path/​gpio108/​value 
         echo 0 > $path/​gpio97/​value         echo 0 > $path/​gpio97/​value
         cur_stat=$stat         cur_stat=$stat
Line 146: Line 135:
 </​code>​ </​code>​
 ===== [ Android ] ===== ===== [ Android ] =====
- +[[en:vu_backlight_with_android|How to control ​backlight ​of the ODROID-VU5/7/7+/8C]]
- +
-==== 1. Download script ==== +
- +
-First, set the root filesystem writable using remount command. +
-<​code>​ +
-# su +
-# mount -o rw,​remount ​ / +
-</​code>​ +
- +
-Make or download the following shell script of the board model that you're using (C1 or C2)\\ +
-and copy it in **/​system/​bin/​**.\\ +
-And make its permission executable +
-<​code>​ +
-# su +
-# chmod 755 /​system/​bin/​vu8c_backlight_c2_android.sh +
-</​code>​ +
- +
-  * ODROID-C2 +
-<file sh vu8c_backlight_c2_android.sh>​ +
-#!/bin/sh +
- +
-path="/​sys/​class/​gpio"​ +
- +
-echo 234 > $path/​export +
-echo 214 > $path/​export +
- +
-echo out > $path/​gpio234/​direction +
-echo out > $path/​gpio214/​direction +
-echo 0 > $path/​gpio234/​value +
-echo 0 > $path/​gpio214/​value +
- +
-chown system:system $path/​gpio234/​value +
-chown system:​system $path/​gpio214/​value +
- +
-cur_stat="​On"​ +
- +
-while [ 1 ]; do +
- +
-sleep 1 +
- +
-screen_info=`dumpsys power grep "​Display Power"​` +
- +
-if [[ $screen_info == *"​OFF"​* && $cur_stat == "​On"​ ]]; then +
- echo "​monitor goes to Off" +
-backlight ​off first +
- echo 1 > $path/​gpio214/​value +
- echo 1 > $path/​gpio234/​value +
- cur_stat="​Off"​ +
-elif [[ $screen_info == *"​ON"​* && $cur_stat == "​Off"​ ]]; then +
- echo "​monitor turns back On" +
- echo 0 > $path/​gpio234/​value +
- # backlight on later +
- echo 0 > $path/​gpio214/​value +
- cur_stat="​On"​ +
-fi +
-done +
-</​file>​ +
-  * ODROID-C1/C1+ +
-<file sh vu8c_backlight_c1_android.sh>​ +
-#!/bin/sh +
- +
-path="/​sys/​class/​gpio"​ +
- +
-echo 97 > $path/​export +
-echo 108 > $path/​export +
- +
-echo out > $path/​gpio97/​direction +
-echo out > $path/​gpio108/​direction +
-echo 0 > $path/​gpio97/​value +
-echo 0 > $path/​gpio108/​value +
- +
-chown system:​system $path/​gpio97/​value +
-chown system:​system $path/​gpio108/​value +
- +
-cur_stat="​On"​ +
- +
-while [ 1 ]; do +
- +
-sleep 1 +
- +
-screen_info=`dumpsys power | grep "​mScreenOn"​` +
- +
-if [[ $screen_info == *"​false"​* && $cur_stat == "​On" ​]]; then +
- echo "​monitor goes to Off" +
- echo 1 > $path/​gpio97/​value +
- echo 1 > $path/​gpio108/​value +
- cur_stat="​Off"​ +
-elif [[ $screen_info == *"​true"​* && $cur_stat == "​Off"​ ]]; then +
- echo "​monitor turns back On" +
- echo 0 > $path/​gpio108/​value +
- echo 0 > $path/​gpio97/​value +
- cur_stat="​On"​ +
-fi +
-done +
-</​file>​ +
-==== 2. Configure system init to run script on boot ==== +
-Now, you need to register the service to run this script automatically on boot time.\\ +
- +
-Add the following lines in the end of **/​system/​init.odroid.board.rc**.\\ +
-Don't forget the root filesystem should be writable as aforementioned. +
- +
-- in case of C2 +
-<​code>​ +
-# su +
-# vi /​system/​init.odroid.board.rc +
-..... +
-..... +
-service vu8c_backlight /​system/​bin/​vu8c_backlight_c2_android.sh +
-    class main +
-    user root +
-    group root +
-    oneshot +
-</​code>​ +
- +
-- in case of C1 +
-<​code>​ +
-# su +
-# vi /​system/​init.odroid.board.rc +
-..... +
-..... +
-service vu8c_backlight /​system/​bin/​vu8c_backlight_c1_android.sh +
-    class main                                 +
-    user root                                  +
-    group root                                 +
-    oneshot ​       +
-</​code>​ +
-And then, reboot the system. +
-<​code>​ +
-# reboot +
-</​code>​+
en/vu8c_backlightcontrol.txt · Last modified: 2017/06/09 15:39 by codewalker
CC Attribution-Share Alike 3.0 Unported
Driven by DokuWiki Recent changes RSS feed Valid CSS Valid XHTML 1.0