ODROID C2 User manual

2023/09/02 08:29 1/3 USB Hub IC reset script
ODROID Wiki - https://wiki.odroid.com/
Power On/Off switch
You can control power supplying to ODROID-C2 while DC adaptor is connected with external switch,
Sliding or Toggle Switch for example, if you connect such switch to J4 on the board. J4 is connected to
NCP372 (Protection IC). There is an ENABLE pin on the NCP372 and it is a low-active and have an
internal pull-down resistor for default on.
Switch status Output of NCP372
ON(short) OFF
OFF(open) ON (+5V)
With this hacking, we strongly recommend to shutdown the O/S
completely before turn-off. Otherwise the file system could be
corrupted very easily. In Linux, for example, please make sure to
execute shutdown -r now or poweroff.
Alternative power input
The J8 pins are added for an alternative power input (for easier wiring/soldering to power supply cable
on PCB rev0.2 20160226)
Alternative heartbeat LED
If you want to remap the blue heartbeat LED to other GPIO, refer this great instruction.
paulcrawford's guide on the forum

Last update:
2016/11/18 09:49 odroid-c2:troubleshooting:usb_hub_ic https://wiki.odroid.com/odroid-c2/troubleshooting/usb_hub_ic?rev=1479431988
https://wiki.odroid.com/ Printed on 2023/09/02 08:29
IR Remote Controller (Android)
Manufacturer Code: 0x4DB2
Button IR code Scancode Android
Power 0xDC 116 KEYCODE_POWER
Mute 0x88 113 KEYCODE_VOLUME_MUTE
Home 0x82 102 KEYCODE_HOME
OK 0xCE 97 KEYCODE_DPAD_CENTER
Up 0xCA 103 KEYCODE_DPAD_UP
Left 0x99 105 KEYCODE_DPAD_LEFT
Right 0xC1 106 KEYCODE_DPAD_RIGHT
Down 0xD2 108 KEYCODE_DPAD_DOWN
Menu 0xC5 139 KEYCODE_MENU
Back 0x9A 158 KEYCODE_BACK
Volume Down 0x81 109 KEYCODE_VOLUME_DOWN
Volume Up 0x80 104 KEYCODE_VOLUME_UP
The IR remote key map is defined in /system/etc/remote.conf file.
Default IR protocol is NEC type.
USB Hub IC reset
echo 126 > /sys/class/gpio/export
echo out > /sys/class/gpio/gpio126/direction

2023/09/02 08:29 3/3 USB Hub IC reset script
ODROID Wiki - https://wiki.odroid.com/
sleep 1
echo 0 > /sys/class/gpio/gpio126/value
sleep 1
echo 1 > /sys/class/gpio/gpio126/value
echo 126 > /sys/class/gpio/unexport
sleep 1
From:
https://wiki.odroid.com/ - ODROID Wiki
Permanent link:
https://wiki.odroid.com/odroid-c2/troubleshooting/usb_hub_ic?rev=1479431988
Last update: 2016/11/18 09:49