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Arduino core for GD32 devices, community developed, based on original GigaDevice's core

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GD32 Arduino Core (New)

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This is a Arduino core is based off of the original GigaDevice core that was provided by the company in early June 2021 (see https://github.com/CommunityGD32Cores/GD32Core/)

It is currently a work in progress, but believed to be functional on GigaDevice's mBed boards.

The intention is to further develop that original core in an open-source, community-driven manner.

Collaborating

Interested in collaborating? Join our dedicated Discord channel for this at https://discord.gg/59kf4JxsRM.

Media

A GD32F303CC chip (placed on a bluepill PCB) runs its first blinky code with the new Arduino core!

first_blinky_gd32f303cc_1080p.mp4

The same board reading out a DHT11 temperature & humidity sensor and displaying it on an SSD1306 OLED via the Adafruit GFX libraries

dht11_oled_preview

The board runs the Adafruit SSD1306 test sketch

i2c_oled.mp4

And here it is using analogRead() to read the voltage over a potentiomeneter as a 12-bit value.

ADC_OLED_preview

Using this core with PlatformIO

Currently, development of this core is being done using PlatformIO. It uses the custom PlatformIO platform https://github.com/CommunityGD32Cores/platform-gd32.

Using PlatformIO is already possible to very easily edit code in the IDE and even live-debug a chip (with e.g. an ST-Link)

Various example projects for this platform for the SPL framework and this Arduino core are currently hosted at https://github.com/CommunityGD32Cores/gd32-pio-projects.

Using this core with the Arduino IDE

To compile for this core with the Arduino IDE, add the following URL to the boards manager.

https://raw.githubusercontent.com/CommunityGD32Cores/GD32Core-New/main/package_gd32_index.json

This will install the core and compiler toolchain against the 'main' git branch.

grafik

Current state

The gd32-arduino-blinky project compiles for the gd32f307_mbed board and the genericGD32F303CC board and works (see video above).

Multiple more complicated demos work, like an SSD1306 OLED, analog input, Serial, etc. See issue CommunityGD32Cores#8 for the latest state of tested components.

Library compatibility list

Legend:

  • ✔️ = working
  • ❌ = not working at all
  • ⚠️ = some features not working
  • ⁉️ = untested
Name Works? Notes
Adafruit GFX ✔️ Tested in conjunction with SSD1306 OLED, CP437 symbols works
Adafruit SSD1306 ✔️ Tested on SSD1306 I2C 128x64 OLED, entire extensive demo works
SimpleDHT ✔️ Works with DHT11 (Temp & Humidity) and OLED, demo above

Updates / History

31.05.2021:

Initial contact and thoughts about an Arduino core implementation from scratch for GD32 devices with @kemotz via Email.

02.06.2021:

Creation of the Github project https://github.com/maxgerhardt/gd32-arduino-core/ and a discord channel.

10.06.2021:

A custom dev board has been designed and is in production. The repo with the files for it is at https://github.com/kemotz/GD32F1x0-dev-brd.

board_preview

@obra and @algernon join the project.

GigaDevices is contact with a request for information on a potentially existing in-house developed Arduino core and code licensing questions.

16.06.2021:

GigaDeviecs confirms that there is a internally developed Arduino core, sends it over to use and approves of publishing it. The code is also BSD 3-clause licensed.

The original files for this are found at https://github.com/CommunityGD32Cores/GD32Core.

The focus shifts from creating a new Arduino core from scratch to getting the retrieved one working and expanding upon it.

18.06.2021:

Arduino core:

  • Add package.json for PlatformIO compatibility
  • Add tools\platformio\platformio-build.py PlatformIO builder script
  • gives a successful build for the gd32f307_mbed board
  • gives a successful build for the genericGD32F303CC board (and gives a working blinky!)

19.06.2021:

24.07.2021:

  • moved all relevant projects into the Github org instead of personal accounts, adapted URLs
  • build fixes for Linux
  • added CI to projects repository, now builds 15 projects fully automatically
  • Jesse worked on merging new-style Arduino APIs (https://github.com/arduino/ArduinoCore-API/) to this core
  • Jesse started working on USB support (and USB bootloaders)
  • later that day, the new ArduinoCore-API adoption was successfully merged and tested

ToDo / thoughts

ToDos are now all moved to issues.

Supported boards

Everything is WIP now and no full support can be expected yet.

Planned support:

GD32F303CC based boards

bluepill_f303cc

custom GD32F190 board seen above

the boards previously supported by this core, so GD32F303ZE-EVAL and GD32F307VG-MBED

.. more?

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Arduino core for GD32 devices, community developed, based on original GigaDevice's core

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