Initial

.cargo/config.toml

@@ -0,0 +1,18 @@
+[build]
+target = "xtensa-esp32s3-espidf"
+
+[target.xtensa-esp32s3-espidf]
+linker = "ldproxy"
+runner = "espflash flash --monitor" # Select this runner for espflash v3.x.x
+rustflags = [ "--cfg",  "espidf_time64"] # Extending time_t for ESP IDF 5: https://github.com/esp-rs/rust/issues/110
+
+[unstable]
+build-std = ["std", "panic_abort"]
+
+[env]
+MCU="esp32s3"
+# Note: this variable is not used by the pio builder (`cargo build --features pio`)
+ESP_IDF_VERSION = "v5.2.2"
+
+# Workaround for https://github.com/esp-rs/esp-idf-template/issues/174 
+CRATE_CC_NO_DEFAULTS = "1"

.github/workflows/rust_ci.yml

@@ -0,0 +1,40 @@
+name: Continuous Integration
+
+on:
+  push:
+    paths-ignore:
+      - "**/README.md"
+  pull_request:
+  workflow_dispatch:
+
+env:
+  CARGO_TERM_COLOR: always
+  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+jobs:
+  rust-checks:
+    name: Rust Checks
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        action:
+          - command: build
+            args: --release
+          - command: fmt
+            args: --all -- --check --color always
+          - command: clippy
+            args: --all-targets --all-features --workspace -- -D warnings
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Setup Rust
+        uses: esp-rs/xtensa-toolchain@v1.5
+        with:
+          default: true
+          buildtargets: esp32s3
+          ldproxy: true
+      - name: Enable caching
+        uses: Swatinem/rust-cache@v2
+      - name: Run command
+        run: cargo ${{ matrix.action.command }} ${{ matrix.action.args }}

.gitignore

@@ -0,0 +1,4 @@
+/.vscode
+/.embuild
+/target
+/Cargo.lock

Cargo.toml

@@ -0,0 +1,31 @@
+[package]
+name = "beacons"
+version = "0.1.0"
+authors = ["jack"]
+edition = "2021"
+resolver = "2"
+rust-version = "1.77"
+
+[[bin]]
+name = "beacons"
+harness = false # do not use the built in cargo test harness -> resolve rust-analyzer errors
+
+[profile.release]
+opt-level = "s"
+
+[profile.dev]
+debug = true    # Symbols are nice and they don't increase the size on Flash
+opt-level = "z"
+
+[features]
+default = []
+
+experimental = ["esp-idf-svc/experimental"]
+
+[dependencies]
+log = "0.4"
+esp-idf-svc = { version = "0.49", features = ["critical-section", "embassy-time-driver", "embassy-sync"] }
+
+[build-dependencies]
+embuild = "0.32.0"
+cc = "=1.1.30" # Version "1.1.30" necessary until a new version of `esp-idf-sys` is released

build.rs

@@ -0,0 +1,3 @@
+fn main() {
+    embuild::espidf::sysenv::output();
+}

rust-toolchain.toml

@@ -0,0 +1,2 @@
+[toolchain]
+channel = "esp"

sdkconfig.defaults

@@ -0,0 +1,10 @@
+# Rust often needs a bit of an extra main task stack size compared to C (the default is 3K)
+CONFIG_ESP_MAIN_TASK_STACK_SIZE=8000
+
+# Use this to set FreeRTOS kernel tick frequency to 1000 Hz (100 Hz by default).
+# This allows to use 1 ms granularity for thread sleeps (10 ms by default).
+#CONFIG_FREERTOS_HZ=1000
+
+# Workaround for https://github.com/espressif/esp-idf/issues/7631
+#CONFIG_MBEDTLS_CERTIFICATE_BUNDLE=n
+#CONFIG_MBEDTLS_CERTIFICATE_BUNDLE_DEFAULT_FULL=n

src/main.rs

@@ -0,0 +1,10 @@
+fn main() {
+    // It is necessary to call this function once. Otherwise some patches to the runtime
+    // implemented by esp-idf-sys might not link properly. See https://github.com/esp-rs/esp-idf-template/issues/71
+    esp_idf_svc::sys::link_patches();
+
+    // Bind the log crate to the ESP Logging facilities
+    esp_idf_svc::log::EspLogger::initialize_default();
+
+    log::info!("Hello, world!");
+}