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 13:45] joy.cho [2. Backlight ON/OFF.] |
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 227: | Line 214: | ||
| echo 1 | sudo tee /sys/devices/platform/pwm-ctrl/enable0 | echo 1 | sudo tee /sys/devices/platform/pwm-ctrl/enable0 | ||
| </code> | </code> | ||
| - | Set duty ratio (value can be 0 to 1023. Higher is brighter) | + | Set duty ratio (value can be 0 to 1023. Lower is brighter) |
| <code> | <code> | ||
| echo 1023 | sudo tee /sys/devices/platform/pwm-ctrl/duty0 | echo 1023 | sudo tee /sys/devices/platform/pwm-ctrl/duty0 | ||
| Line 242: | Line 229: | ||
| <code> | <code> | ||
| - | root@odroidc2:/ # cd /sys/devices/pwm-ctrl.46/ | + | root@odroidc2:/ # cd /sys/devices/pwm-ctrl.43/ |
| - | root@odroidc2:/sys/devices/pwm-ctrl.46 # ls | + | root@odroidc2:/sys/devices/pwm-ctrl.43 # ls |
| driver | driver | ||
| duty0 | duty0 | ||
| Line 252: | Line 239: | ||
| subsystem | subsystem | ||
| uevent | uevent | ||
| - | root@odroidc2:/sys/devices/pwm-ctrl.46 # cat enable0 | + | root@odroidc2:/sys/devices/pwm-ctrl.43 # cat enable0 |
| PWM_0 : off | PWM_0 : off | ||
| - | root@odroidc2:/sys/devices/pwm-ctrl.46 # echo 1 > enable0 | + | root@odroidc2:/sys/devices/pwm-ctrl.43 # echo 1 > enable0 |
| - | root@odroidc2:/sys/devices/pwm-ctrl.46 # cat enable0 | + | root@odroidc2:/sys/devices/pwm-ctrl.43 # cat enable0 |
| PWM_0 : on | PWM_0 : on | ||
| + | </code> | ||
| + | Set default frequency. | ||
| + | <code> | ||
| + | root@odroidc2:/sys/devices/pwm-ctrl.43 # echo 100000 > freq0 | ||
| </code> | </code> | ||
| Set duty ratio.\\ | Set duty ratio.\\ | ||
| - | Value can be 0 to 1023 and higher 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> | ||
