remove unused dependencies & add GHA flow

.github/workflows/build_and_test.yml

@@ -2,7 +2,7 @@ on: [push, pull_request]
 name: Build and Test check
 jobs:
   builds:
-    name: "Build checks"
+    name: Build checks
     runs-on: ubuntu-20.04
     strategy:
       matrix:
@@ -16,26 +16,41 @@ jobs:
           target: thumbv6m-none-eabi
           override: true
           profile: minimal
-      - name: "Build workspace"
+      - name: Build workspace
         uses: actions-rs/cargo@v1
         with:
           command: build
           args: ${{ matrix.mode }} --workspace ${{ matrix.features }}
-      - name: "Build workspace and examples"
+      - name: Build workspace and examples
         uses: actions-rs/cargo@v1
         with:
           command: build
           args: ${{ matrix.mode }} --workspace --examples ${{ matrix.features }}
-      - name: "List built examples and clean"
+      - name: List built examples and clean
         run: rm -vrf target/thumbv6m-none-eabi/*/examples/* | sed -e "s/removed '\(.*\)'/\1/" | xargs -l basename | grep -Ev '(-|\.d)'
-      - name: "Test"
+      - name: Test
         uses: actions-rs/cargo@v1
         with:
           command: test
           args: --tests --target x86_64-unknown-linux-gnu ${{ matrix.features }}
-      - name: "Test docs"
+      - name: Test docs
         uses: actions-rs/cargo@v1
         with:
           command: test
           args: --doc --target x86_64-unknown-linux-gnu ${{ matrix.features }}
+      - name: Clean
+        uses: actions-rs/cargo@v1
+        with:
+          command: clean
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: nightly
+          target: thumbv6m-none-eabi
+          override: true
+          profile: minimal
+      - name: Check unused deps
+        uses: aig787/cargo-udeps-action@v1
+        with:
+          version: latest
+          args: ${{ matrix.mode }} --workspace ${{ matrix.features }}
 

boards/arduino_nano_connect/Cargo.toml

@@ -16,7 +16,6 @@ rp2040-boot2 = { version = "0.2.0", optional = true }
 rp2040-hal = { path = "../../rp2040-hal", version = "0.5.0" }
 cortex-m-rt = { version = "0.7.0", optional = true }
 embedded-hal = { version = "0.2.4", features = ["unproven"] }
-panic-probe = { version = "0.3.0", features = ["print-defmt"] }
 
 [dev-dependencies]
 panic-halt= "0.2.0"

boards/pimoroni-badger2040/Cargo.toml

@@ -21,10 +21,6 @@ embedded-hal ="0.2.5"
 [dev-dependencies]
 panic-halt= "0.2.0"
 nb = "1.0"
-embedded-graphics = "0.7.1"
-
-defmt = "0.3.0"
-defmt-rtt = "0.3.0"
 
 [features]
 default = ["boot2", "rt"]

boards/rp-pico/Cargo.toml

@@ -17,8 +17,6 @@ rp2040-hal = { path = "../../rp2040-hal", version = "0.5.0" }
 cortex-m-rt = { version = "0.7", optional = true }
 fugit = "0.3.5"
 usb-device= "0.2.9"
-usbd-serial = "0.1.1"
-usbd-hid = "0.5.1"
 futures = { version = "0.3", default-features = false, optional = true }
 
 [dev-dependencies]
@@ -38,6 +36,8 @@ hd44780-driver = "0.4.0"
 pio = "0.2.0"
 pio-proc = "0.2.1"
 critical-section = "1.0.0"
+usbd-serial = "0.1.1"
+usbd-hid = "0.5.1"
 
 defmt = "0.3.0"
 defmt-rtt = "0.3.0"

boards/vcc-gnd-yd-rp2040/Cargo.toml

@@ -17,24 +17,15 @@ rp2040-hal = { path = "../../rp2040-hal", version = "0.5.0" }
 cortex-m-rt = { version = "0.7", optional = true }
 fugit = "0.3.5"
 usb-device= "0.2.9"
-usbd-serial = "0.1.1"
-usbd-hid = "0.5.1"
 futures = { version = "0.3", default-features = false, optional = true }
 
 [dev-dependencies]
 panic-halt= "0.2.0"
 embedded-hal ="0.2.5"
-cortex-m-rtic = "1.1.2"
 nb = "1.0"
-i2c-pio = "0.4.0"
-heapless = "0.7.9"
 smart-leds = "0.3.0"
 ws2812-pio = "0.4.0"
-ssd1306 = "0.7.0"
-embedded-graphics = "0.7.1"
-hd44780-driver = "0.4.0"
 pio = "0.2.0"
-pio-proc = "0.2.1"
 
 [features]
 default = ["boot2", "rt"]

rp2040-hal-macros/Cargo.toml

@@ -12,7 +12,6 @@ proc-macro = true
 [dependencies]
 quote = "1.0"
 proc-macro2 = "1.0"
-cortex-m-rt = "0.7.0"
 
 [dependencies.syn]
 features = ["extra-traits", "full"]