Getting Started

This guide helps you build and run CrossPoint locally.

Prerequisites

PlatformIO Core (pio) or VS Code + PlatformIO IDE
Python 3.8+
clang-format 21+ in your PATH (CI uses clang-format 21)
USB-C cable
Xteink X4 device for hardware testing

If ./bin/clang-format-fix fails with either of these errors, install clang-format 21:

clang-format: No such file or directory
.clang-format: error: unknown key 'AlignFunctionDeclarations'

Examples:

# Debian/Ubuntu (try this first)
sudo apt-get update && sudo apt-get install -y clang-format-21

# If the package is unavailable, add LLVM apt repo and retry
wget https://apt.llvm.org/llvm.sh
chmod +x llvm.sh
sudo ./llvm.sh 21
sudo apt-get update
sudo apt-get install -y clang-format-21

# macOS (Homebrew)
brew install clang-format

Then verify:

clang-format-21 --version

The reported major version must be 21 or newer.

Clone and initialize

git clone --recursive https://github.com/crosspoint-reader/crosspoint-reader
cd crosspoint-reader

If you already cloned without submodules:

git submodule update --init --recursive

Enable the repository-managed Git hooks (required once per clone):

git config core.hooksPath .githooks
chmod +x .githooks/pre-commit

Build

pio run

Flash

pio run --target upload

First checks before opening a PR

./bin/clang-format-fix
pio check --fail-on-defect low --fail-on-defect medium --fail-on-defect high
pio run