Set up CI

.github/workflows/ci.yml

@@ -0,0 +1,37 @@
+on:
+  push:
+    branches: [master, main]
+  pull_request:
+
+name: CI
+
+jobs:
+
+  firmware-build:
+    name: Build firmware
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: nightly-2024-10-10
+          target: riscv32imc-unknown-none-elf
+          override: true
+      - name: Run check
+        env:
+          WIFI_SSID: "example-ssid"
+          WIFI_PASS: "example-pass"
+          SPACEAPI_SENSOR_ENDPOINT: "http://example.com/sensors/people_now_present/"
+        run: cd firmware && cargo check --target riscv32imc-unknown-none-elf --release
+
+  rustfmt:
+    name: Check code formatting
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: 1.82.0
+          components: rustfmt
+          override: true
+      - run: cd firmware && cargo fmt -- --check

firmware/Cargo.toml

@@ -11,7 +11,11 @@ name = "firmware"
 harness = false   # do not use the built in cargo test harness -> resolve rust-analyzer errors
 
 [profile.release]
+lto = true
 opt-level = "s"
+incremental = false
+codegen-units = 1
+debug = true # note: debug = true is okay - debuginfo isn't flashed to the device!
 
 [profile.dev]
 debug = true    # Symbols are nice and they don't increase the size on Flash