nix-scripts/mcu/default.nix

{ # Use master branch of the overlay by default
  mozillaOverlay ? import (builtins.fetchTarball https://github.com/mozilla/nixpkgs-mozilla/archive/master.tar.gz),
  rustManifest ? ./channel-rust-nightly.toml
}:

let
  pkgs = import <nixpkgs> { overlays = [ mozillaOverlay ]; };
  rustPlatform = pkgs.recurseIntoAttrs (pkgs.callPackage ./rustPlatform.nix {
    inherit rustManifest;
  });
  buildStm32Firmware = { name, src, patchPhase ? "", extraNativeBuildInputs ? [], checkPhase ? "", ... } @ args:
    let
      # If binaryName is specified as an arg of buildStm32Firmware,
      # then the .nix containing the cargoSha256 must be named "cargosha256-${binaryName}.nix";
      # otherwise, the .nix must be named "cargosha256.nix".
      cargoSha256Drv = pkgs.runCommand "${name}-cargosha256" { } ''
        cp "${src}/cargosha256${
          if (args ? binaryName) then "-" + args.binaryName else ""
        }.nix" $out
        '';
      # If binaryName is specified as an arg of buildStm32Firmware,
      # then use it as the filename of the ELF generated from `cargo build`;
      # otherwise, use the `name` arg (i.e. the Rust package name) as the ELF filename.
      binaryName = if (args ? binaryName) then args.binaryName else name;
    in
      rustPlatform.buildRustPackage rec {
        inherit name;
        version = "0.0.0";

        inherit src;
        cargoSha256 = (import cargoSha256Drv);

        inherit patchPhase;
        nativeBuildInputs = [ pkgs.llvm ] ++ extraNativeBuildInputs;
        buildPhase = ''
          export CARGO_HOME=$(mktemp -d cargo-home.XXX)
          cargo build --release
        '';

        inherit checkPhase;
        installPhase = ''
          mkdir -p $out $out/nix-support
          cp target/thumbv7em-none-eabihf/release/${binaryName} $out/${name}.elf
          echo file binary-dist $out/${name}.elf >> $out/nix-support/hydra-build-products
          llvm-objcopy -O binary target/thumbv7em-none-eabihf/release/${binaryName} $out/${name}.bin
          echo file binary-dist $out/${name}.bin >> $out/nix-support/hydra-build-products
        '';

        dontFixup = true;
      };
  migen = (import ../artiq-fast/pkgs/python-deps.nix { inherit (pkgs) stdenv fetchgit fetchFromGitHub python3Packages; misoc-new = true; }).migen;
in
  {
    stabilizer-dual-iir = buildStm32Firmware {
      name = "stabilizer-dual-iir";
      binaryName = "dual-iir";
      src = <stabilizerSrc>;
      patchPhase = ''
        substituteInPlace src/hardware/configuration.rs \
          --replace "IpAddress::v4(10, 34, 16, 103)" \
                    "IpAddress::v4(192, 168, 1, 76)" \
          --replace "Ipv4Address::new(10, 34, 16, 1)" \
                    "Ipv4Address::new(192, 168, 1, 1)"
      '';
    };
    thermostat = buildStm32Firmware {
      name = "thermostat";
      src = <thermostatSrc>;
      checkPhase = ''
        cargo test --target=${pkgs.rust.toRustTarget pkgs.stdenv.targetPlatform}
      '';
    };
    humpback-dds = buildStm32Firmware {
      name = "humpback-dds";
      src = <humpbackDdsSrc>;
      extraNativeBuildInputs = [
        (pkgs.python3.withPackages(ps: [ migen ]))
        pkgs.yosys
        pkgs.nextpnr
        pkgs.icestorm
      ];
    };
  }