Rework structure and configuration

include/sta/os2/watchdog.hpp

@@ -0,0 +1,44 @@
+/**
+ * @brief Implementation of watchdog system task.
+ *
+ * Define STA_OS2_WATCHDOG_ENABLE in <sta/config.hpp> to enable.
+ *
+ * Configuration:
+ *     STA_OS2_WATCHDOG_TIMER_PERIOD:   Period of heartbeat timer (default: 1000)
+ *     STA_OS2_WATCHDOG_TIMER_HANDLE:   Name of global timer handle variable (default: heartbeatHandle)
+ *     STA_OS2_WATCHDOG_TIMER_CALLBACK: Name of timer callback function (default: heartbeatCallback)
+ *
+ *     STA_OS2_WATCHDOG_HANDLE:         Name of global task handle variable (default:  watchdogHandle)
+ *     STA_OS2_WATCHDOG_ENTRY_FUNCTION: Name of task entry function (default: watchdogTask)
+ */
+#ifndef STA_OS2_WATCHDOG_HPP
+#define STA_OS2_WATCHDOG_HPP
+
+#include <sta/config.hpp>
+#ifdef STA_OS2_WATCHDOG_ENABLE
+
+#include <stdint.h>
+
+
+// Watchdog task flags
+//
+
+#define STA_WATCHDOG_FLAG_HEARTBEAT	0x00001000U
+
+
+namespace sta
+{
+	/**
+	 * @brief Start heartbeat timer for watchdog.
+	 */
+	void startWatchdogTimer();
+	/**
+	 * @brief Send notification to watchdog task.
+	 */
+	void notifyWatchdog(uint32_t flags);
+} // namespace sta
+
+
+#endif // STA_OS2_WATCHDOG_ENABLE
+
+#endif // STA_OS2_WATCHDOG_HPP