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en:vu8c_backlightcontrol [2017/01/13 13:40] joy.cho [1. Download script] |
en:vu8c_backlightcontrol [2017/05/01 10:19] codewalker |
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| ====== VU8C Backlight On/Off Control by Monitor Status ====== | ====== VU8C Backlight On/Off Control by Monitor Status ====== | ||
| This wiki page describes the way how to control vu8c backlight on/off when monitor status is triggered by controlling the related GPIO ports.\\ | This wiki page describes the way how to control vu8c backlight on/off when monitor status is triggered by controlling the related GPIO ports.\\ | ||
| - | So far, Ubuntu is available with the following scheme and we're investigating it on Android platform now. | + | |
| 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 147: | Line 136: | ||
| ===== [ Android ] ===== | ===== [ Android ] ===== | ||
| - | On Android, we are investigating how to control and run auto control scheme. \\ | ||
| - | As soon as it's done, we will make the instruction guide here. | ||
| - | |||
| - | (UNDER CONSTRUCTION!!!) | ||
| ==== 1. Download script ==== | ==== 1. Download script ==== | ||
| Line 162: | Line 147: | ||
| Make or download the following shell script of the board model that you're using (C1 or C2)\\ | 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 copy it in **/system/bin/**.\\ | ||
| - | And set its permission. | + | And make its permission executable |
| <code> | <code> | ||
| # su | # su | ||
| Line 174: | Line 159: | ||
| 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 system system $path/gpio234/value | + | chown system:system $path/gpio214/value |
| - | chown system system $path/gpio214/value | + | |
| cur_stat="On" | cur_stat="On" | ||
| Line 197: | Line 178: | ||
| # backlight off first | # backlight off first | ||
| echo 1 > $path/gpio214/value | echo 1 > $path/gpio214/value | ||
| - | echo 1 > $path/gpio234/value | ||
| cur_stat="Off" | cur_stat="Off" | ||
| elif [[ $screen_info == *"ON"* && $cur_stat == "Off" ]]; then | elif [[ $screen_info == *"ON"* && $cur_stat == "Off" ]]; then | ||
| echo "monitor turns back On" | echo "monitor turns back On" | ||
| - | echo 0 > $path/gpio234/value | ||
| # backlight on later | # backlight on later | ||
| echo 0 > $path/gpio214/value | echo 0 > $path/gpio214/value | ||
| Line 215: | Line 194: | ||
| 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 system system $path/gpio97/value | + | chown system:system $path/gpio97/value |
| - | chown system system $path/gpio108/value | + | |
| cur_stat="On" | cur_stat="On" | ||
| Line 231: | Line 206: | ||
| sleep 1 | sleep 1 | ||
| - | screen_info=`dumpsys power | grep "Display Power"` | + | screen_info=`dumpsys power | grep "mScreenOn"` |
| - | if [[ $screen_info == *"OFF"* && $cur_stat == "On" ]]; then | + | if [[ $screen_info == *"false"* && $cur_stat == "On" ]]; then |
| 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="Off" | cur_stat="Off" | ||
| - | elif [[ $screen_info == *"ON"* && $cur_stat == "Off" ]]; then | + | elif [[ $screen_info == *"true"* && $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="On" | cur_stat="On" | ||
| Line 246: | Line 219: | ||
| done | done | ||
| </file> | </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.\\ | ||
| - | ==== 2. Configure Init to run script on boot ==== | + | Add the following lines in the end of **/system/init.odroid.board.rc**.\\ |
| - | + | Don't forget the root filesystem should be writable as aforementioned. | |
| - | Add the following in the end point of **/system/init.odroid.board.rc** | + | |
| + | - in case of C2 | ||
| <code> | <code> | ||
| + | # su | ||
| # vi /system/init.odroid.board.rc | # 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 /system/bin/vu8c.sh | + | service vu8c_backlight /system/bin/vu8c_backlight_c1_android.sh |
| class main | class main | ||
| user root | user root | ||
| group root | group root | ||
| oneshot | oneshot | ||
| + | </code> | ||
| + | And then, reboot the system. | ||
| + | <code> | ||
| + | # reboot | ||
| </code> | </code> | ||
