Add CI and fix the rest of the readme

.cargo/config.toml

@@ -14,7 +14,7 @@ rustflags = [
 # TODO(3) Adjust the compilation target.
 # (`thumbv6m-*` is compatible with all ARM Cortex-M chips but using the right
 # target improves performance)
-target = "thumbv6m-none-eabi"    # Cortex-M0 and Cortex-M0+
+# target = "thumbv6m-none-eabi"    # Cortex-M0 and Cortex-M0+
 # target = "thumbv7m-none-eabi"    # Cortex-M3
 # target = "thumbv7em-none-eabi"   # Cortex-M4 and Cortex-M7 (no FPU)
 # target = "thumbv7em-none-eabihf" # Cortex-M4F and Cortex-M7F (with FPU)
@@ -22,3 +22,4 @@ target = "thumbv6m-none-eabi"    # Cortex-M0 and Cortex-M0+
 [alias]
 rb = "run --bin"
 rrb = "run --release --bin"
+bbr = "build --release --bin"

.github/workflows/build.yaml

@@ -0,0 +1,32 @@
+name: Build
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build:
+    name: Build the project according to the steps
+    runs-on: ubuntu:22.04
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      
+      - name: Install rust nightly
+        run: |
+          rustup override set nightly
+
+      - name: Configure rust target
+        run: |
+          rustup target add thumbv7em-none-eabihf
+
+      - name: Cache Dependencies
+        uses: Swatinem/rust-cache@v2
+
+      - name: Run steps
+        run: |
+          ./run-steps.sh

Cargo.toml

@@ -7,11 +7,11 @@ version = "0.1.0"
 
 [dependencies]
 cortex-m = { version = "0.7", features = ["critical-section-single-core"] }
-defmt = { version = "0.3", features = ["encoding-rzcobs"]
+defmt = { version = "0.3", features = ["encoding-rzcobs"] }
 defmt-brtt = { version = "0.1", default-features = false, features = ["rtt"] }
 panic-probe = { version = "0.3", features = ["print-defmt"] }
 # TODO select the correct rtic backend
-rtic = { version = "2.0.0-alpha.1", features = [ "correct-rtic-backend" ] }
+rtic = { version = "2.0.0-alpha.1", features = [ "$RTIC_BACKEND" ] }
 # TODO enter your HAL here
 # some-hal = "1.2.3"
 # TODO add a monotonic if you use scheduling

README.md

@@ -54,14 +54,14 @@ Let's walk through them together now.
 
 Pick a chip from `probe-run --list-chips` and enter it into `.cargo/config.toml`.
 
-If, for example, you have a nRF52840 Development Kit from one of [our workshops], replace `{{chip}}` with `nRF52840_xxAA`.
+If, for example, you have a nRF52840 Development Kit from one of [our workshops], replace `$CHIP` with `nRF52840_xxAA`.
 
 [our workshops]: https://github.com/ferrous-systems/embedded-trainings-2020
 
 ``` diff
  # .cargo/config.toml
  [target.'cfg(all(target_arch = "arm", target_os = "none"))']
--runner = "probe-run --chip {{chip}}"
+-runner = "probe-run --chip $CHIP"
 +runner = "probe-run --chip nRF52840_xxAA"
 ```
 
@@ -72,7 +72,7 @@ In `.cargo/config.toml`, pick the right compilation target for your board.
 ``` diff
  # .cargo/config.toml
  [build]
--target = "thumbv6m-none-eabi"    # Cortex-M0 and Cortex-M0+
+-# target = "thumbv6m-none-eabi"    # Cortex-M0 and Cortex-M0+
 -# target = "thumbv7m-none-eabi"    # Cortex-M3
 -# target = "thumbv7em-none-eabi"   # Cortex-M4 and Cortex-M7 (no FPU)
 -# target = "thumbv7em-none-eabihf" # Cortex-M4F and Cortex-M7F (with FPU)
@@ -87,11 +87,11 @@ $ rustup +nightly target add thumbv7em-none-eabihf
 
 #### 4. Activate the correct `rtic` backend
 
-In `Cargo.toml`, activate the correct `rtic` backend for your target by replacing `correct-rtic-backend` with one of `thumbv6-backend`, `thumbv7-backend`, `thumbv8base-backend`, or `thumbv8main-backend`, depending on the target you are compiling for.
+In `Cargo.toml`, activate the correct `rtic` backend for your target by replacing `$RTIC_BACKEND` with one of `thumbv6-backend`, `thumbv7-backend`, `thumbv8base-backend`, or `thumbv8main-backend`, depending on the target you are compiling for.
 
 ```diff
 # Cargo.toml
--rtic = { version = "2.0.0-alhpa.1", features = [ "correct-rtic-backend" ] }
+-rtic = { version = "2.0.0-alhpa.1", features = [ "$RTIC_BACKEND" ] }
 +rtic = { version = "2.0.0-alhpa.1", features = [ "thumbv7-backend" ] }
 ```
 

cargo-generate.toml

@@ -1,2 +1,2 @@
 [template]
-ignore = ["README.md"]
+ignore = ["README.md", "run-steps.sh"]

run-steps.sh

@@ -0,0 +1,37 @@
+#!/bin/sh
+
+set -ex
+
+project="test-app"
+
+echo "Installing necessary tools"
+cargo install flip-link cargo-generate sd probe-run
+
+echo "Cleaning up old project"
+rm -rf "$project"
+
+echo "Creating new project"
+cargo generate -p . --name "$project"
+
+echo "Storing current config so that the child project will compile."
+mv Cargo.toml Cargo.toml.tmp
+mv .cargo/config.toml .cargo/config.toml.tmp
+
+cd "$project"
+
+echo "Performing steps"
+
+sd -s -- '--chip $CHIP' '--chip nRF52840_xxAA' .cargo/config.toml
+sd -s '# target = "thumbv7em-none-eabihf" # Cortex-M4F and Cortex-M7F (with FPU)' 'target = "thumbv7em-none-eabihf"' .cargo/config.toml
+sd -s '$RTIC_BACKEND' 'thumbv7-backend' Cargo.toml
+sd -s '# some-hal = "1.2.3"' 'nrf52840-hal = "0.16.0"' Cargo.toml
+sd -s '// use some_hal as _; // memory layout' 'use nrf52840_hal as _;' src/lib.rs
+sd -s 'some_hal::pac' 'nrf52840_hal::pac' src/bin/minimal.rs
+sd -s 'FreeInterrupt1, ...' 'SWI0_EGU0' src/bin/minimal.rs
+
+cargo bbr minimal
+
+cd ..
+echo "Cleaning up"
+mv Cargo.toml.tmp Cargo.toml
+mv .cargo/config.toml.tmp .cargo/config.toml