1 files changed, 62 insertions, 0 deletions
diff --git a/demos/KINETIS/RT-FREEDOM-K20D50M-EXT/main.c b/demos/KINETIS/RT-FREEDOM-K20D50M-EXT/main.c
new file mode 100644
index 0000000..a329884
--- /dev/null
+++ b/demos/KINETIS/RT-FREEDOM-K20D50M-EXT/main.c
@@ -0,0 +1,62 @@
+/*
+    ChibiOS - Copyright (C) 2006..2015 Giovanni Di Sirio
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+*/
+
+#include "ch.h"
+#include "hal.h"
+
+/* Triggered when the button is pressed. The blue led is toggled. */
+static void extcb1(EXTDriver *extp, expchannel_t channel) {
+  (void)extp;
+  (void)channel;
+
+  palTogglePad(IOPORT4, 4);
+}
+
+static const EXTConfig extcfg = {
+  {
+   {EXT_CH_MODE_FALLING_EDGE | EXT_CH_MODE_AUTOSTART, extcb1, PORTA, 1}
+  }
+};
+
+/*
+ * Application entry point.
+ */
+int main(void) {
+
+  /*
+   * System initializations.
+   * - HAL initialization, this also initializes the configured device drivers
+   *   and performs the board-specific initializations.
+   * - Kernel initialization, the main() function becomes a thread and the
+   *   RTOS is active.
+   */
+  halInit();
+  chSysInit();
+
+  palSetPad(IOPORT3, 3);    // Red
+  palSetPad(IOPORT4, 4);    // Green
+  palSetPad(IOPORT1, 2);    // Blue
+
+  /*
+   * Activates the EXT driver 1.
+   */
+  palSetPadMode(IOPORT1, 1, PAL_MODE_INPUT_PULLUP);
+  extStart(&EXTD1, &extcfg);
+
+  while (1) {
+    chThdSleepMilliseconds(500);
+  }
+}