Split github ci into muliple parts

This allows to filter jobs on type of file
changes.

.github/workflows/codegen.yml

@@ -0,0 +1,22 @@
+name: Codegen CI
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    paths:
+      - 'codegen/**'
+
+jobs:
+  codegen:
+    name: Check Codegen
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          override: true
+          profile: minimal
+          components: rustfmt
+      - run: cargo check --target "x86_64-unknown-linux-gnu" -p codegen

.github/workflows/ci.yml → .github/workflows/hal.yml

@@ -1,9 +1,16 @@
-name: CI
+name: HAL CI
 
 on:
   push:
     branches: [master]
   pull_request:
+    paths:
+      - 'Cargo.toml'
+      - '.clippy.toml'
+      - 'build.rs'
+      - 'src/**'
+      - 'examples/**'
+      - '**.toml'
 
 jobs:
   check:
@@ -155,53 +162,19 @@ jobs:
             --features=stm32f303xc --lib --examples
             -- -D warnings
 
-  rustfmt:
-    name: Rustfmt
+  # This is only needed, becuase workflows can not trigger other workflows
+  build-testsuite:
+    name: Build Testsuite
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
       - uses: actions-rs/toolchain@v1
         with:
           toolchain: stable
+          target: thumbv7em-none-eabihf
           override: true
           profile: minimal
-          components: rustfmt
       - uses: actions-rs/cargo@v1
         with:
-          command: fmt
-          args: --all -- --check
-
-  codegen:
-    name: Check Codegen
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - uses: actions-rs/toolchain@v1
-        with:
-          toolchain: stable
-          override: true
-          profile: minimal
-          components: rustfmt
-      - run: cargo check --target "x86_64-unknown-linux-gnu" -p codegen
-
-  markdown-lint:
-    name: Markdown Lint
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - uses: nosborn/[email protected]
-        with:
-          files: .
-          config_file: .markdownlint.yml
-          ignore_files: target/
-
-  link-checker:
-    name: Link Checker
-    runs-on: ubuntu-latest
-    steps:
-    - name: Checkout
-      uses: actions/checkout@v2
-    - name: Check URLs in documentation
-      uses: lycheeverse/[email protected]
-      with:
-        args: --verbose --no-progress "**/*.md" "**/*.rs" "Cargo.toml" "**/Cargo.toml" -h accept=text/html
+          command: test
+          args: -p testsuite --no-run

.github/workflows/link-checker.yml

@@ -0,0 +1,22 @@
+name: Link Checker CI
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    paths:
+      - '**.md'
+      - '**.rs'
+      - '**.toml'
+
+jobs:
+  link-checker:
+    name: Link Checker
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+    - name: Check URLs in documentation
+      uses: lycheeverse/[email protected]
+      with:
+        args: --verbose --no-progress "**/*.md" "**/*.rs" "Cargo.toml" "**/Cargo.toml" -h accept=text/html

.github/workflows/markdown.yaml

@@ -0,0 +1,20 @@
+name: Markdown CI 
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    paths:
+      - '**.md'
+
+jobs:
+  markdown-lint:
+    name: Markdown Lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: nosborn/[email protected]
+        with:
+          files: .
+          config_file: .markdownlint.yml
+          ignore_files: target/

.github/workflows/rust.yml

@@ -0,0 +1,25 @@
+name: Rust CI
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    paths:
+      - '**.rs'
+
+jobs:
+  rustfmt:
+    name: Rustfmt
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          override: true
+          profile: minimal
+          components: rustfmt
+      - uses: actions-rs/cargo@v1
+        with:
+          command: fmt
+          args: --all -- --check

.github/workflows/testsuite.yml

@@ -0,0 +1,25 @@
+name: Testsuite CI
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    paths:
+      - 'testsuite/'
+
+jobs:
+  build-testsuite:
+    name: Build Testsuite
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          target: thumbv7em-none-eabihf
+          override: true
+          profile: minimal
+      - uses: actions-rs/cargo@v1
+        with:
+          command: test
+          args: -p testsuite --no-run