App Boilerplates: C & Rust
The Boilerplates showcase the Ledger Device SDK and the surrounding development tooling (Docker containers, Speculos emulator, Ragger test framework). It contains examples for APDU handling, UI flows, cryptography, build/test/CI integration.
Who is it for
- Developers beginning Ledger signer app development.
- Developers who want a concise reference for build, test and CI logic in a Ledger signer app.
Quick start
Fork the App Boilerplate (C)
Click here to fork the repository and start your project.
Use the VSCode Extension
Use Ledger’s VSCode developer tools to build, run on Speculos, run functional tests and load on a device from the VSCode UI.
Continuous Integration (CI)
Two workflows are required for an app submission: Build_and_functional_tests and Guidelines_enforcer.
Build_and_functional_tests
Build_and_functional_tests builds the app and runs functional tests using Ragger + Speculos.
Guidelines_enforcer
Guidelines_enforcer calls a reusable guidelines_enforcer workflow used for submission checks.
Next steps
After forking either boilerplate and reviewing the included CI workflows and guidelines, adapt the application to your project by updating metadata, implementing APDU handlers, and designing UI flows that follow the Graphic Library Usage Guidelines.
