Add github actions CI

.github/bors.toml

@@ -1,4 +1,8 @@
 block_labels = ["needs-decision"]
 delete_merged_branches = true
 required_approvals = 1
-status = ["continuous-integration/travis-ci/push"]
+status = [
+  "CI (stable, x86_64-unknown-linux-gnu)",
+  "CI (stable, armv7-unknown-linux-gnueabihf)",
+  "CI (1.35.0, x86_64-unknown-linux-gnu)",
+]

.github/workflows/ci.yml

@@ -0,0 +1,49 @@
+on:
+  push:
+    branches: [ staging, trying, master ]
+  pull_request:
+
+name: Continuous integration
+
+jobs:
+  ci-linux:
+    name: CI
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        # All generated code should be running on stable now
+        rust: [stable]
+
+        # The default target we're compiling on and for
+        TARGET: [x86_64-unknown-linux-gnu, armv7-unknown-linux-gnueabihf]
+
+        include:
+          # Test MSRV
+          - rust: 1.35.0
+            TARGET: x86_64-unknown-linux-gnu
+
+          # Test nightly but don't fail
+          - rust: nightly
+            experimental: true
+            TARGET: x86_64-unknown-linux-gnu
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: ${{ matrix.rust }}
+          target: ${{ matrix.TARGET }}
+          override: true
+
+      - name: Install armv7 libraries
+        if: ${{ matrix.TARGET == 'armv7-unknown-linux-gnueabihf' }}
+        run: sudo apt-get install -y libc6-armhf-cross libc6-dev-armhf-cross gcc-arm-linux-gnueabihf
+
+      - uses: actions-rs/cargo@v1
+        with:
+          command: check
+          args: --target=${{ matrix.TARGET }}

.github/workflows/clippy.yml

@@ -0,0 +1,20 @@
+on:
+  push:
+    branches: [ staging, trying, master ]
+  pull_request:
+
+name: Clippy check
+jobs:
+  clippy_check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+          components: clippy
+      - uses: actions-rs/clippy-check@v1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/rustfmt.yml

@@ -0,0 +1,23 @@
+on:
+  push:
+    branches: [ staging, trying, master ]
+  pull_request:
+
+name: Code formatting check
+
+jobs:
+  fmt:
+    name: Rustfmt
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+          components: rustfmt
+      - uses: actions-rs/cargo@v1
+        with:
+          command: fmt
+          args: --all -- --check

src/lib.rs

@@ -25,7 +25,6 @@ pub use sysfs_gpio;
 #[cfg(feature = "gpio_cdev")]
 pub use gpio_cdev;
 
-
 use core::convert::Infallible;
 use std::io::{self, Write};
 use std::path::{Path, PathBuf};
@@ -202,19 +201,19 @@ impl embedded_hal::blocking::i2c::WriteRead for I2cdev {
         buffer: &mut [u8],
     ) -> Result<(), Self::Error> {
         self.set_address(address)?;
-        let mut messages = [
-            LinuxI2CMessage::write(bytes),
-            LinuxI2CMessage::read(buffer),
-        ];
+        let mut messages = [LinuxI2CMessage::write(bytes), LinuxI2CMessage::read(buffer)];
         self.inner.transfer(&mut messages).map(drop)
     }
 }
 
 impl embedded_hal::blocking::i2c::Transactional for I2cdev {
     type Error = i2cdev::linux::LinuxI2CError;
 
-    fn try_exec(&mut self, address: u8, operations: &mut [I2cOperation]) -> Result<(), Self::Error>
-    {
+    fn try_exec(
+        &mut self,
+        address: u8,
+        operations: &mut [I2cOperation],
+    ) -> Result<(), Self::Error> {
         // Map operations from generic to linux objects
         let mut messages: Vec<_> = operations
             .as_mut()
@@ -280,30 +279,32 @@ impl embedded_hal::blocking::spi::Write<u8> for Spidev {
     }
 }
 
-pub use embedded_hal::blocking::spi::{Operation as SpiOperation};
+pub use embedded_hal::blocking::spi::Operation as SpiOperation;
 
 /// Transactional implementation batches SPI operations into a single transaction
 impl embedded_hal::blocking::spi::Transactional<u8> for Spidev {
     type Error = io::Error;
 
     fn try_exec<'a>(&mut self, operations: &mut [SpiOperation<'a, u8>]) -> Result<(), Self::Error> {
-
         // Map types from generic to linux objects
-        let mut messages: Vec<_> = operations.iter_mut().map(|a| {
-            match a {
-                SpiOperation::Write(w) => SpidevTransfer::write(w),
-                SpiOperation::Transfer(r) => {
-                    // Clone read to write pointer
-                    // SPIdev is okay with having w == r but this is tricky to achieve in safe rust
-                    let w = unsafe {
-                        let p = r.as_ptr();
-                        std::slice::from_raw_parts(p, r.len())
-                    };
-
-                    SpidevTransfer::read_write(w, r)
-                },
-            }
-        }).collect();
+        let mut messages: Vec<_> = operations
+            .iter_mut()
+            .map(|a| {
+                match a {
+                    SpiOperation::Write(w) => SpidevTransfer::write(w),
+                    SpiOperation::Transfer(r) => {
+                        // Clone read to write pointer
+                        // SPIdev is okay with having w == r but this is tricky to achieve in safe rust
+                        let w = unsafe {
+                            let p = r.as_ptr();
+                            std::slice::from_raw_parts(p, r.len())
+                        };
+
+                        SpidevTransfer::read_write(w, r)
+                    }
+                }
+            })
+            .collect();
 
         // Execute transfer
         self.0.transfer_multiple(&mut messages)