Firefly Pixie: Firmware

This is early prototype firmware to help design and refine the Firefly SDK.

It currently amounts to little more than a clone of Space Invaders, but has many of the necessary API to implement a hardware wallet.

• Device Design, Schematics and PCB
• Case

Development

To get this project and it's submodules:

git clone --recurse-submodules https://github.com/firefly/pixie-firmware.git

If you already cloned the project and forgot --recurse-submodules

git submodule update --init --recursive

To get upstream changes from the remote submodules

git pull --recurse-submodules

Use docker to build the project:

docker run --rm -v $PWD:/project -w /project -e HOME=/tmp espressif/idf idf.py build

Troubleshooting

1. If you get error: implicit declaration of function x; did you mean function y? [-Wimplicit-function-declaration], check and update the firefly-scene and firefly-display submodules in the components folder:

# check the submodules are from the correct branch
git submodule status

# update the submodules
git submodule update --init --recursive

# pull submodules changes from the remote repositories
git pull --recurse-submodules

Hardware Specifications

• Processor: ESP32-C3 (32-bit RISC-V)
• Speed: 160Mhz
• Memory: 400kb RAM, 16Mb Flash, 4kb eFuse
• Inputs: 4x tactile buttons
• Outputs:
  • 240x240px IPS 1.3" display (16-bit color)
  • 4x RGB LED (WS2812B)
• Conectivity:
  • USB-C
  • BLE

License

BSD License.