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Android User Guide

This page summarizes common operations after Android boots.

Terminal​

Use the debug UART to view boot logs. The manual screenshot marks the debug UART baud rate as 1500000 with no hardware flow control.

ADB can also be used:

adb devices
adb shell

If more than one device and emulator appears, close extra emulators or restart the adb process.

MP3 and Video Playback​

Place media files on TF card, USB disk, or internal storage and play them with the system player or a third-party player. Use hardware decoding where possible.

Wi-Fi and Bluetooth​

Enable Wi-Fi in Android Settings, select an AP, and enter the password. Bluetooth can be used for file transfer and Bluetooth speakers.

USB Mouse and Keyboard​

Connect a mouse, keyboard, or wireless receiver to a USB HOST port.

TF Card and USB Disk​

External storage is mounted automatically by Android. If it is not detected, check filesystem format, power, and driver state.

Screen Rotation​

Screen orientation can be controlled by system settings, application configuration, or Surface rotation settings.

Camera​

For CSI or USB camera testing, check power, reset, MCLK, I2C, MIPI/CSI lanes, device tree, and driver matching.

Ethernet​

ifconfig
ip addr
ping 8.8.8.8

HDMI Display​

The board supports HDMI output. If there is no image, check resolution, EDID, display service, and device-tree configuration.

Power, Suspend, and Wake-up​

Power, reset, suspend, and wake-up require coordination between keys, PMIC, device tree, and system services.