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System Login

Account and Password

Default user and passwords for different systems are as follows:

System Username Password
Debian11 linaro linaro
Debian11 root root
Ubuntu20.04 kickpi kickpi
Ubuntu20.04 root root

Mobaxterm

UART Pins

Before performing UART debugging, please locate the UART pins as described.

K5C

  • Pinout Diagram

image-20251106190342567

  • Diagram

image-20251106190650437

Preparation

Note

Red: VCC (Not needed); Green: TX; White: RX; Black: GND

Connection Setup

  • Installation Example

image-20251106190934108

Mobaxterm Configuration

1. Open Mobaxterm on your Windows computer and click "Session" to create a new session window.

2. Select the session type as "Serial".

3. Select the COM port number (Check the COM number in Windows Device Manager under "Ports (COM & LPT)").

4. Set the Speed (bps) to 115200.

5. Start the session window.

As shown in the figure, after clicking OK, you will enter the command line input window.

If the board is powered on and connected to the computer, Mobaxterm will show kernel print during board's boot process.

Once connected successfully, press Enter in the command line interface to start entering commands.

At this point, you have successfully connected to the board's terminal via the serial port. You can now use various commands to control and debug .

ADB

The Android system supports ADB functionality. ADB (Android Debug Bridge) is a debug bridge tool for Android system development. It supports connecting to devices via USB or network, enabling device management and debugging operations such as app installation, file transfer, and command execution.

Preparation

Connection Setup

  • K5C Installation Diagram: Connect one end of the Type-C cable to the board and the other end to your host computer.

ADB Installation

  1. Unzip the adb-tools.rar file, for example, to the path D:\ADB\adb-tools.

  2. Open a Command Prompt (cmd) window and switch to the unzipped directory.

    cd D:\ADB\adb-tools
    3. Run the following command. A successful run indicates ADB is installed correctly.

    adb --version

    image-20251030103509920 4. Start ADB debugging.

    .\adb.exe shell

    image-20251030103154909