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| Both sides previous revision Previous revision Next revision | Previous revision | ||
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en:vu8c_backlightcontrol [2017/01/13 11:00] joy.cho [Android] |
en:vu8c_backlightcontrol [2017/06/09 15:39] (current) codewalker |
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| 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 10: | Line 9: | ||
| - | ===== Ubuntu ===== | + | ===== [ Ubuntu ] ===== |
| On Ubuntu, monitor standby time can be set using **Power Management Preferences** menu. \\ | On Ubuntu, monitor standby time can be set using **Power Management Preferences** menu. \\ | ||
| Line 23: | 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 41: | 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 83: | 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 111: | 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 135: | ||
| </code> | </code> | ||
| ===== [ Android ] ===== | ===== [ Android ] ===== | ||
| - | + | [[en:vu_backlight_with_android|How to control backlight of the ODROID-VU5/7/7+/8C]] | |
| - | 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. | + | |
| - | + | ||
| - | <file sh vu8c_backlight_c2_android.sh> | + | |
| - | #!/system/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> | + | |
