Differences
This shows you the differences between two versions of the page.
Both sides previous revision Previous revision Next revision | Previous revision | ||
en:acc:vu8 [2017/01/19 14:15] joy.cho [3. Backlight control with PWM.] |
en:acc:vu8 [2017/05/22 09:09] (current) odroid [ODROID-VU8C] |
||
---|---|---|---|
Line 6: | Line 6: | ||
[[http://www.hardkernel.com/main/products/prdt_info.php?g_code=G147918565945|Where to buy]] | [[http://www.hardkernel.com/main/products/prdt_info.php?g_code=G147918565945|Where to buy]] | ||
+ | |||
+ | Assembly guide by ETA PRIME ! | ||
+ | {{youtube>0eSQ7iG_PlY?medium}} | ||
====== Specifications ====== | ====== Specifications ====== | ||
* 8-inch TFT-LCD | * 8-inch TFT-LCD | ||
Line 64: | Line 67: | ||
<code> | <code> | ||
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 | ||
</code> | </code> | ||
Line 75: | Line 75: | ||
path="/sys/class/gpio" | path="/sys/class/gpio" | ||
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 | ||
</code> | </code> | ||
Line 105: | Line 102: | ||
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 | ||
</file> | </file> | ||
Line 136: | Line 129: | ||
$ reboot | $ reboot | ||
</code> | </code> | ||
- | After reboot, you can confirm if the nodes are configured normally by checking "gpio214" and "gpio234". | + | After reboot, you can confirm if the nodes are configured normally by checking "gpio214". |
<code> | <code> | ||
$ ls /sys/class/gpio/ | $ ls /sys/class/gpio/ | ||
export | export | ||
gpio214 | gpio214 | ||
- | gpio234 | ||
gpiochip122 | gpiochip122 | ||
gpiochip136 | gpiochip136 | ||
Line 154: | Line 146: | ||
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 | ||
</file> | </file> | ||
Now, you need to register the service to run this script automatically on boot time.\\ | Now, you need to register the service to run this script automatically on boot time.\\ | ||
Line 183: | Line 171: | ||
$ reboot | $ reboot | ||
</code> | </code> | ||
- | After reboot, you can confirm if the nodes are configured normally by checking "gpio97" and "gpio108". | + | After reboot, you can confirm if the nodes are configured normally by checking "gpio97". |
<code> | <code> | ||
$ ls /sys/class/gpio/ | $ ls /sys/class/gpio/ | ||
export | export | ||
gpio97 | gpio97 | ||
- | gpio108 | ||
...... | ...... | ||
...... | ...... | ||
Line 265: | Line 252: | ||
Value can be 0 to 1023 and lower value means brighter. | Value can be 0 to 1023 and lower value means brighter. | ||
<code> | <code> | ||
- | root@odroidc2:/sys/devices/pwm-ctrl.46 # cat duty0 | + | root@odroidc2:/sys/devices/pwm-ctrl.43 # cat duty0 |
0 | 0 | ||
- | root@odroidc2:/sys/devices/pwm-ctrl.46 #echo 160 > duty0 | + | root@odroidc2:/sys/devices/pwm-ctrl.43 #echo 160 > duty0 |
- | root@odroidc2:/sys/devices/pwm-ctrl.46 # cat duty0 | + | root@odroidc2:/sys/devices/pwm-ctrl.43 # cat duty0 |
160 | 160 | ||
</code> | </code> |