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Android User Guide

Debug Console​

Connect to the UART0 debug port at 115200 8N1 with hardware and software flow control disabled. The serial console provides boot logs and a shell after Android starts.

Android serial console

Common ADB commands:

adb devices
adb shell
adb push local-file /data/local/tmp/
adb pull /data/local/tmp/remote-file .

Audio Playback​

Place audio files on a TF card or USB drive. After media scanning completes, play them from the music application.

Android music playback

Video Playback​

The gallery application scans external storage for videos and images.

Video library

Video playback

Wi-Fi​

Open Settings, Network and Internet, then Wi-Fi. Enable Wi-Fi, select the SSID, and enter the password.

Wi-Fi settings

Wireless network selection

Bluetooth​

Open Settings, Connected devices, then Bluetooth. Search for and pair a phone, speaker, or another device.

Bluetooth settings

Bluetooth pairing

USB Mouse and Keyboard​

Connect a USB mouse, keyboard, or wireless receiver to a USB Host port. Android automatically detects standard HID devices.

TF Card and USB Drive​

Android normally mounts removable storage below /storage/. Check it with:

adb shell ls -l /storage
adb shell df -h

External storage mount

Screen Rotation​

The on-board gravity sensor reports orientation changes. Rotation also depends on the system setting and whether the application allows rotation.

Camera​

Open the camera application for preview, still capture, and video recording. The camera module must match the active device tree, driver, supply, and timing configuration.

Android camera

Wired Ethernet​

After a live cable is connected, Android normally obtains an address through DHCP. Useful checks are:

adb shell ip addr show eth0
adb shell ip route
adb shell ping -c 4 8.8.8.8

Android Ethernet

HDMI Output​

HDMI carries video and audio. The actual modes depend on the firmware, monitor EDID, and display driver.

HDMI output

Power and Suspend​

  • Depending on the PMIC configuration, the board starts automatically when 12V is applied or starts through the Power key.
  • Hold the Power key to open the shutdown menu.
  • Press the Power key briefly to suspend and press it again to resume.

Android power menu