[examples] Add Feather-M0 example

.circleci/config.yml

@@ -122,6 +122,17 @@ jobs:
           command: |
             (cd examples && ../tools/scripts/examples_compile.py avr arduino_uno)
 
+  sam-examples:
+    docker:
+      - image: modm/modm-build:latest
+    steps:
+      - checkout
+      - run: (git submodule sync && git submodule update --init --jobs 8) & pip3 install -U lbuild & wait
+      - run:
+          name: Examples SAMD21 Series
+          command: |
+            (cd examples && ../tools/scripts/examples_compile.py feather_m0)
+
   avr-compile-all:
     docker:
       - image: modm/modm-build:latest
@@ -303,6 +314,7 @@ workflows:
       - unittests-linux-generic
       - avr-examples
       - stm32-examples
+      - sam-examples
 
       - avr-compile-all:
           requires:

examples/feather_m0/blink/main.cpp

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2019, Ethan Slattery
+ *
+ * This file is part of the modm project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <modm/board.hpp>
+
+using namespace Board;
+
+int
+main()
+{
+    Board::initialize();
+    // LedD13::setOutput();
+
+    while (1)
+    {
+        // LedD13::toggle();
+        modm::delayMilliseconds(500);
+
+#ifdef MODM_BOARD_HAS_LOGGER
+        static uint32_t counter(0);
+        MODM_LOG_INFO << "Loop counter: " << (counter++) << modm::endl;
+#endif
+    }
+
+    return 0;
+}

examples/feather_m0/blink/project.xml

@@ -0,0 +1,9 @@
+<library>
+  <extends>modm:feather-m0</extends>
+  <options>
+    <option name="modm:build:build.path">../../../build/feather_m0/blink</option>
+  </options>
+  <modules>
+    <module>modm:build:scons</module>
+  </modules>
+</library>