Merge pull request #55 from marcoveeneman/tiva-wdg-driver

Tiva WDG driver

1 files changed, 83 insertions, 0 deletions

diff --git a/testhal/TIVA/TM4C123x/WDG/main.c b/testhal/TIVA/TM4C123x/WDG/main.c
new file mode 100644
index 0000000..da08cfb
--- /dev/null
+++ b/testhal/TIVA/TM4C123x/WDG/main.c
@@ -0,0 +1,83 @@
+/*
+    Copyright (C) 2014..2016 Marco Veeneman
+
+    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"
+
+static bool watchdog_timeout(WDGDriver *wdgp)
+{
+  (void)wdgp;
+
+  palSetPad(GPIOF, GPIOF_LED_RED);
+
+  /* Return true to prevent a reset on the next timeout.*/
+  return true;
+}
+
+/*
+ * Watchdog deadline set to one second.
+ * Use callback on first timeout.
+ * Stall timer if paused by debugger.
+ */
+static const WDGConfig wdgcfg =
+{
+  TIVA_SYSCLK,
+  watchdog_timeout,
+  TEST_STALL
+};
+
+/*
+ * 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();
+
+  palSetPadMode(GPIOF, GPIOF_LED_RED, PAL_MODE_OUTPUT_PUSHPULL);
+  palSetPadMode(GPIOF, GPIOF_LED_BLUE, PAL_MODE_OUTPUT_PUSHPULL);
+
+  palSetPadMode(GPIOF, GPIOF_SW1, PAL_MODE_INPUT_PULLUP);
+  palSetPadMode(GPIOF, GPIOF_SW2, PAL_MODE_INPUT_PULLUP);
+
+  /*
+   * Starting the watchdog driver.
+   */
+  wdgStart(&WDGD1, &wdgcfg);
+
+  /*
+   * Normal main() thread activity, it resets the watchdog.
+   */
+  while (true) {
+    if (palReadPad(GPIOF, GPIOF_SW1)) {
+      /* Only reset the watchdog if the button is not pressed */
+      wdgReset(&WDGD1);
+      palClearPad(GPIOF, GPIOF_LED_RED);
+    }
+
+    palTogglePad(GPIOF, GPIOF_LED_BLUE);
+
+    chThdSleepMilliseconds(500);
+  }
+  return 0;
+}