Diff: timer.cpp

Revision:

20:26b1a4570f4b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/timer.cpp	Mon Nov 22 22:26:51 2021 +0530
@@ -0,0 +1,190 @@
+/**************************************************************************//**
+ *   @file    timer.cpp
+ *   @brief   Implementation of Timer MBED Platform Driver Interfaces
+*******************************************************************************
+ * Copyright (c) 2021 Analog Devices, Inc.
+ * All rights reserved.
+ *
+ * This software is proprietary to Analog Devices, Inc. and its licensors.
+ * By using this software you agree to the terms of the associated
+ * Analog Devices Software License Agreement.
+******************************************************************************/
+
+/*****************************************************************************/
+/***************************** Include Files *********************************/
+/*****************************************************************************/
+
+#include <stdio.h>
+#include <mbed.h>
+
+//Platform Drivers need to be C-compatible to work with other drivers
+#ifdef __cplusplus
+extern "C"
+{
+#endif	//__cplusplus
+
+#include "timer.h"
+#include "error.h"
+#include "timer_extra.h"
+using namespace std::chrono;
+
+/*****************************************************************************/
+/******************** Variables and User Defined Data Types ******************/
+/*****************************************************************************/
+
+/*****************************************************************************/
+/************************** Functions Declarations ***************************/
+/*****************************************************************************/
+
+/*****************************************************************************/
+/************************** Functions Definitions ****************************/
+/*****************************************************************************/
+
+/**
+ * @brief Initialize the timer peripheral
+ * @param desc[in, out] - The Timer descriptor
+ * @param init_param[in] - Structure that contains Timer Initialization Parameters
+ * @return SUCCESS in case of success, FAILURE otherwise
+ */
+int32_t timer_init(struct timer_desc **desc,
+		   struct timer_init_param *param)
+{
+	timer_desc *new_timer;			// Pointer to timer descriptor
+	mbed_timer_desc *mbed_desc;		// Pointer to mbed timer descriptor
+	mbed::Timer *timer;				// Pointer to new Timer instance
+
+	if (desc && param) {
+		new_timer = (timer_desc *)malloc(sizeof(timer_desc));
+		if (!new_timer) {
+			goto err_new_desc;
+		}
+		new_timer->freq_hz = param->freq_hz;
+		new_timer->id = param->id;
+		new_timer->load_value = param->load_value;
+
+		mbed_desc = (mbed_timer_desc *)malloc(sizeof(mbed_timer_desc));
+		if (!mbed_desc) {
+			goto err_mbed_desc;
+		}
+
+		timer  = new Timer();
+		if (!timer) {
+			goto err_timer_instance;
+		}
+
+		mbed_desc->timer  = timer;
+		new_timer->extra = (mbed_timer_desc *) mbed_desc;
+
+		*desc = new_timer;
+		return SUCCESS;
+	}
+	return FAILURE;
+
+err_timer_instance:
+	free(mbed_desc);
+	free(new_timer);
+err_mbed_desc:
+	free(new_timer);
+err_new_desc:
+	// Nothing to free
+
+	return FAILURE;
+}
+
+
+/**
+* @brief Start Timer.
+* @param desc[in] - The Timer Descriptor.
+* @return SUCCESS in case of success, FAILURE otherwise.
+*/
+int32_t timer_start(struct timer_desc *desc)
+{
+	mbed::Timer *timer;
+
+	if (!desc) {
+		return FAILURE;
+	}
+	timer = (Timer *)(((mbed_timer_desc *)(desc->extra))->timer);
+	if (!timer) {
+		return FAILURE;
+	}
+	timer->start();
+
+	return SUCCESS;
+}
+
+
+/**
+* @brief Stop Timer.
+* @param desc[in] - The Timer Descriptor.
+* @return SUCCESS in case of success, FAILURE otherwise.
+*/
+int32_t timer_stop(struct timer_desc *desc)
+{
+	mbed::Timer *timer;
+
+	if (!desc) {
+		return FAILURE;
+	}
+	timer = (Timer *)(((mbed_timer_desc *)(desc->extra))->timer);
+	if (!timer) {
+		return FAILURE;
+	}
+	timer->stop();
+
+	return SUCCESS;
+}
+
+
+/**
+* @brief Release all the resources allocated by Timer.
+* @param desc[in] - The Timer Descriptor.
+* @return SUCCESS in case of success, FAILURE otherwise
+*/
+int32_t timer_remove(struct timer_desc *desc)
+{
+	if (desc) {
+		// Free the timer object
+		if ((Timer *)(((mbed_timer_desc *)(desc->extra))->timer)) {
+			delete((Timer *)(((mbed_timer_desc *)(desc->extra))->timer));
+		}
+		// Free the extra descriptor object
+		if ((mbed_timer_desc *)(desc->extra)) {
+			free((mbed_timer_desc *)(desc->extra));
+		}
+		// Free the Timer descriptor
+		free(desc);
+
+		return SUCCESS;
+	}
+	return FAILURE;
+}
+
+
+/**
+* @brief Get the elapsed time in nanoseconds.
+* @param desc[in] - The Timer descriptor
+* @param elapsed_time[out] - Pointer where the elapsed time value is stored
+* @return SUCCESS in case of success, FAILURE otherwise
+*/
+int32_t get_elapsed_time_in_nsec(struct timer_desc *desc,
+				 uint64_t *elapsed_time)
+{
+	mbed::Timer *timer;
+
+	if (!desc) {
+		return FAILURE;
+	}
+
+	timer = (Timer *)(((mbed_timer_desc *)(desc->extra))->timer);
+	if (!timer) {
+		return FAILURE;
+	}
+	*elapsed_time = duration_cast<nanoseconds>(timer->elapsed_time()).count();
+
+	return SUCCESS;
+}
+
+#ifdef __cplusplus
+}
+#endif // __cplusplus