DigiCron

Software and hardware for the DigiCron retro smartwatch.

Want to try out the software on your device? Just visit the DigiCron Simulator!

Getting the code

You must clone this repo like this:

git clone --recurse-submodules https://github.com/devicefuture/digicron

This is because this repo contains submodules which are used as libraries for the firmware and simulator.

Building

Before building for the first time, install dev dependencies:

./build.sh --install-dev

To build the firmware and upload it to the target device over USB, run:

./build.sh --upload

You can also check for compilation errors without uploading by removing the --upload flag.

To build the firmware and the simulator, run:

./build.sh --sim

Then to run the simulator locally, start a web server in this directory. Run the following to start the web server at localhost:8000:

python3 -m http.server

Building a system app

All system apps are already built when running the main build script, but it is possible to build apps separately anyway for debugging purposes.

First install the required dependencies (these are installed for you when you run ./build.sh --install-dev):

sudo apt install clang lld xxd

Then run (where $name is the name of the app's source directory, such as test):

apps/build.sh $name

Note

If you are experiencing segmentation faults with clang and lld (on version 19), then you may want to try installing clang-14 and lld-14, which are known working versions. The build script will automatically choose clang-14 (if available) over other installed versions.