Added CI. Moved script to new 'scripts/' directory.

.github/workflows/ci.yml

@@ -0,0 +1,90 @@
+on: [push, pull_request]
+
+name: Continuous integration
+
+jobs:
+  check:
+    name: Check
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        rust:
+          - stable
+          - 1.63.0
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: ${{ matrix.rust }}
+          override: true
+      - uses: actions-rs/cargo@v1
+        with:
+          command: check
+          args: --all-targets
+
+# The tests currently won't work without the 'industrialio' and 'iio_dummy'
+# modules, loaded into the kernel.
+# Perhaps split out a default set of tests that don't hit the kernel and
+# enable this.
+
+#  test:
+#    name: Test Suite
+#    runs-on: ubuntu-latest
+#    strategy:
+#      matrix:
+#        rust:
+#          - stable
+#          - 1.63.0
+#    steps:
+#      - uses: actions/checkout@v2
+#      - uses: actions-rs/toolchain@v1
+#        with:
+#          profile: minimal
+#          toolchain: ${{ matrix.rust }}
+#          override: true
+#      - uses: actions-rs/cargo@v1
+#        with:
+#          command: test
+
+  fmt:
+    name: Rustfmt
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        rust:
+          - stable
+          - 1.63.0
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: ${{ matrix.rust }}
+          override: true
+      - run: rustup component add rustfmt
+      - uses: actions-rs/cargo@v1
+        with:
+          command: fmt
+          args: --all -- --check
+
+  clippy:
+    name: Clippy
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        rust:
+          - stable
+          - 1.63.0
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: ${{ matrix.rust }}
+          override: true
+      - run: rustup component add clippy
+      - uses: actions-rs/cargo@v1
+        with:
+          command: clippy
+          args: -- -D warnings

scripts/load_dummy.sh

@@ -0,0 +1,104 @@
+#!/bin/bash
+#
+# load_dummy.sh
+#
+# Loads the required IIO kernel modules and then creates a dummy device
+# and one hrtimer.
+# 
+# This is useful for application testing and unit testing of the library.
+# 
+# The required IIO drivers must be comiled for the kernel as loadable modules.
+# This should be the case for Ubuntu 18.04 and Mint 19. Your mileage may vary.
+#
+
+# Names of the device and timer that will be created
+IIO_DEV_NAME=dummydev
+IIO_TIMER_NAME=timer0
+
+# ----- Must have root privleges to run this script -----
+
+if (( $EUID != 0 )); then
+   echo "This script must be run as root"
+   exit 1
+fi
+
+# ----- Load the kernel module(s) -----
+
+DUMMY_LOADED=$(lsmod | grep ^iio_dummy)
+
+if [ -n "${DUMMY_LOADED}" ]; then
+    printf "IIO dummy module already loaded.\n"
+else
+    if ! modprobe iio_dummy ; then
+        printf "Unable to load load the IIO dummy module.\n"
+        exit 1
+    fi
+    printf "IIO dummy module loaded.\n"
+fi
+
+HRTIMER_LOADED=$(lsmod | grep ^iio_trig_hrtimer)
+
+if [ -n "${HRTIMER_LOADED}" ]; then
+    printf "IIO hrtimer module already loaded.\n"
+else
+    if ! modprobe iio_trig_hrtimer ; then
+        printf "Unable to load load the IIO hrtimer module.\n"
+    fi
+    printf "IIO hrtimer module loaded.\n"
+fi
+
+
+# ----- Mount the config filesystem -----
+
+CONFIG_PATH=$(mount | awk '/^configfs/ { print $3 }')
+
+if [ -n "$CONFIG_PATH" ]; then
+    printf "Found configfs at '%s'\n" "${CONFIG_PATH}"
+else
+    CONFIG_PATH=/mnt/config
+    mkdir -p ${CONFIG_PATH}
+    if ! mount -t configfs none ${CONFIG_PATH} ; then
+        printf "Unable to mount configfs\n"
+        exit 1
+    fi
+    printf "Mounted configfs at %s\n" "${CONFIG_PATH}"
+fi
+
+IIO_CONFIG_PATH=${CONFIG_PATH}/iio
+
+# ----- Create a dummy device -----
+
+if [ ! -d ${IIO_CONFIG_PATH}/devices/dummy ]; then
+    printf "No configfs path to create IIO devices.\n"
+    exit 2
+fi
+
+DEV_CONFIG_PATH=${IIO_CONFIG_PATH}/devices/dummy/${IIO_DEV_NAME}
+
+if [ -d ${DEV_CONFIG_PATH} ]; then
+    printf "IIO dummy device already exists.\n"
+else
+    mkdir ${DEV_CONFIG_PATH}
+    printf "Created IIO dummy device: '%s'\n" "${IIO_DEV_NAME}"
+fi
+
+# ----- Create a timer -----
+
+if [ ! -d ${IIO_CONFIG_PATH}/triggers/hrtimer ]; then
+    printf "No configfs path to create an IIO hrtimer.\n"
+else
+    TIMER_CONFIG_PATH=${IIO_CONFIG_PATH}/triggers/hrtimer/${IIO_TIMER_NAME}
+
+    if [ -d ${TIMER_CONFIG_PATH} ]; then
+        printf "IIO hrtimer already exists.\n"
+    else
+        mkdir ${TIMER_CONFIG_PATH}
+        printf "Created IIO hrtimer: '%s'\n" "${IIO_TIMER_NAME}"
+    fi
+fi
+
+# ----- Dump the device info -----
+
+printf "\n--- IIO Info ---\n\n"
+iio_info
+