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arduino-sketch-builder-nix/README.md
2023-12-03 16:38:37 +01:00

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# arduino-nix
A flake that allows building an `arduino-cli` environment with certain packages and libraries pre-installed.
## Example
You need to provide a package index and library index to use `arduino-nix`. You can find some at [arduino-indexes](https://github.com/bouk/arduino-indexes).
Alternatively, you can download them at https://downloads.arduino.cc/packages/package_index.json and https://downloads.arduino.cc/libraries/library_index.json
From the indexes you create overlays which then make the Arduino packages and libraries available for the wrapArduinoCLI function provided by this flake.
```nix
{
inputs = {
nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
flake-utils.url = "github:numtide/flake-utils";
arduino-nix.url = "github:bouk/arduino-nix";
arduino-library-index = {
url = "github:bouk/arduino-indexes/library_index";
flake = false;
};
arduino-package-index = {
url = "github:bouk/arduino-indexes/package_index";
flake = false;
};
arduino-package-rp2040-index = {
url = "github:bouk/arduino-indexes/package_rp2040_index";
flake = false;
};
};
outputs = {
self,
nixpkgs,
flake-utils,
arduino-nix,
arduino-package-index,
arduino-package-rp2040-index,
arduino-library-index,
...
}@attrs:
let
overlays = [
(arduino-nix.overlay)
(arduino-nix.mkArduinoPackageOverlay (arduino-package-index + "/package_index.json"))
(arduino-nix.mkArduinoPackageOverlay (arduino-package-rp2040-index + "/package_rp2040_index.json"))
(arduino-nix.mkArduinoLibraryOverlay (arduino-library-index + "/library_index.json"))
];
in
(flake-utils.lib.eachDefaultSystem (system:
let
pkgs = (import nixpkgs) {
inherit system overlays;
};
// arduinoEnv provides bin/arduino-cli and some useful helpers functions
arduinoEnv = pkgs.makeArduinoEnv {
libraries = with pkgs.arduinoLibraries; [
(arduino-nix.latestVersion ADS1X15)
(arduino-nix.latestVersion Ethernet_Generic)
(arduino-nix.latestVersion SCL3300)
(arduino-nix.latestVersion TMCStepper)
(arduino-nix.latestVersion pkgs.arduinoLibraries."Adafruit PWM Servo Driver Library")
];
packages = with pkgs.arduinoPackages; [
platforms.arduino.avr."1.6.23"
platforms.rp2040.rp2040."2.3.3"
];
};
in rec {
packages = {
inherit arduinoEnv;
my-rp2020-project = arduinoEnv.buildArduinoSketch {
name = "my-rp2040-project";
src = ./. + "/my-rp2040-project";
fqbn = "arduino:mbed_rp2040:pico";
};
}
));
}
```
## Interactive arduino-cli usage:
```
nix develop .#arduinoEnv
```
## Build Arduino Sketch
```
nix build .#my-rp2040-project
```
Now you have `result` in your current working directory containing the compile outputs.
## Upload to board
```
nix run .#my-rp2040-project.uploadArduinoSketch -- -p /dev/ttyUSB0
```
This with upload the sketch via serial on `/dev/ttyUSB0`.
You can append any additional options from `arduino-cli upload` after `--`.
It uses the same fqbn as specified in `buildArduinoSketch`.