Open Flashloader for Realtek Ameba MCUs

This project provides a standalone Open Flashloader implementation built using:

• arm-none-eabi-gcc
• CMake
• Ninja
• Python build script
• CMSIS-based flash programming interface

The output is a .elf binary compatible with SEGGER JFlash.

Supported Ameba Boards

• AmebaDPlus (RTL8721DXX)
• AmebaGreen2 (RTL8721F)
• AmebaSmart (RTL8730EX)

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✅ Requirements

Dependency	Purpose
arm-none-eabi-gcc	Cross compiler
CMake ≥ 3.20	Build generator
Ninja	Fast build tool
Python 3	Build automation

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🚀 Build Instructions

From the project root:

./build.py

to perform build on all supported chips.

To perform a clean build

rm -rf build/

Then run build.py

Output Files

After a successful build, you will find:

output/
└── CHIPNAME_FLASHSIZE.elf

Usage

SEGGER JFLASH

Requirements

• SEGGER JLINK PLUS or higher

Installation

Automated Installation

1. cd into the scripts directory.

2. Build the installer by first executing package.py and then CI.py

3. Execute the RTKJLinkDevicesInstaller executable.

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Manual Installation

Note

AmebaDPlus is used as the example

Copy the respective device .xml located in devices/ to the following directory:

Windows C:\Users\user\AppData\Roaming\SEGGER\JLinkDevices\Realtek\AmebaDPlus\RTL8721DXX.xml

or

Linux /home/user/.SEGGER/JLinkDevices\Realtek\AmebaDPlus\RTL8721DXX.xml

Place the FlashLoader.elf in the same level directory as the RTL8721DXX.xml

Note

You should have already added the jlink_scripts into a folder called JLinkDevices\Realtek\AmebaDPlus\jlink_script

Reference: J-Link Device Support Kit

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📜 License

This project is licensed under the MIT License - see the LICENSE file for details.