Added Timer Wrapper

include/sta/rtos/timer.hpp

@@ -0,0 +1,34 @@
+/**
+ * @file
+ * @brief RTOS timer implementation.
+ */
+
+#ifndef STA_RTOS_TIMER_HPP
+#define STA_RTOS_TIMER_HPP
+
+#include <cmsis_os2.h>
+#include <sta/timer.hpp>
+
+namespace sta
+{
+	/**
+	 * @brief Implementation of Timer using CMSIS RTOS2.
+	 *
+	 * @ingroup STA_RTOS_API
+	 */
+	class RtosTimer : public Timer
+	{
+	public:
+		RtosTimer(void (*callback)(void *arg), void *arg);
+        ~RtosTimer();
+
+		void start(uint32_t millis) override;
+		void stop() override;
+
+	private:
+		osTimerId_t timer_id_;                  /**< CMSIS RTOS2 Timer */
+        osTimerAttr_t timer_attr_;         /**< CMSIS RTOS2 Timer attributes */
+	};
+} // namespace sta
+
+#endif // STA_RTOS_TIMER_HPP