/*
 * Copyright (c) 2023 Juan Manuel Cruz <jcruz@fi.uba.ar> <jcruz@frba.utn.edu.ar>.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its
 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * @file   : app.c
 * @date   : Set 26, 2023
 * @author : Juan Manuel Cruz <jcruz@fi.uba.ar> <jcruz@frba.utn.edu.ar>
 * @version	v1.0.0
 */


/* Project includes. */
#include "main.h"

/* Demo includes. */
#include "logger.h"
#include "dwt.h"

/* Application & Tasks includes. */
#include "app.h"
#include "board.h"
#include "task_adc.h"
#include "task_pwm.h"


/********************** macros and definitions *******************************/


#define G_APP_CNT_INI       0ul
#define G_APP_TICK_CNT_INI  0ul

#define TASK_X_WCET_INI     0ul

typedef struct {
	void (*task_init)(void *);
	void (*task_update)(void *);
	void *parameters;
} task_cfg_t;

typedef struct {
    uint32_t WCET;
} task_dta_t;

/********************** internal data declaration ****************************/

shared_data_type shared_data;

const task_cfg_t task_cfg_list[]	= {
		{task_adc_init, task_adc_update, &shared_data},
		{task_pwm_init, task_pwm_update, &shared_data},
};

#define TASK_QTY (sizeof(task_cfg_list)/sizeof(task_cfg_t))

/********************** internal functions declaration ***********************/

/********************** internal data definition *****************************/

const char *p_sys = " Bare Metal - Event-Triggered Systems (ETS)\n";
const char *p_app = " ADC + PWM\n";

/********************** external data declaration *****************************/

uint32_t g_app_cnt;
uint32_t g_app_time_us;

volatile uint32_t g_app_tick_cnt;
task_dta_t task_dta_list[TASK_QTY];

/********************** external functions definition ************************/

void app_init(void)
{
    uint32_t index;

    /* Print out: Application Initialized */
    LOGGER_LOG("\n");
    LOGGER_LOG("%s is running - Tick [mS] = %lu\r\n", GET_NAME(app_init), HAL_GetTick());

    LOGGER_LOG(p_sys);
    LOGGER_LOG(p_app);

    g_app_cnt = G_APP_CNT_INI;

    /* Print out: Application execution counter */
    LOGGER_LOG(" %s = %lu\n", GET_NAME(g_app_cnt), g_app_cnt);

    /* Go through the task arrays */
    for (index = 0; TASK_QTY > index; index++)
    {
        /* Run task_x_init */
        (*task_cfg_list[index].task_init)(task_cfg_list[index].parameters);

        /* Init variables */
        task_dta_list[index].WCET = TASK_X_WCET_INI;
    }

    cycle_counter_init();
}

void app_update(void)
{
    uint32_t index;
    //uint32_t cycle_counter;
    uint32_t cycle_counter_time_us;

    /* Check if it's time to run tasks */
    if (G_APP_TICK_CNT_INI < g_app_tick_cnt)
    {
        g_app_tick_cnt--;

        /* Update App Counter */
        g_app_cnt++;
        g_app_time_us = 0;

        /* Print out: Application execution counter */
        //LOGGER_LOG(" %s = %lu\r\n", GET_NAME(g_app_cnt), g_app_cnt);

        /* Go through the task arrays */
        for (index = 0; TASK_QTY > index; index++)
        {
            cycle_counter_reset();

            /* Run task_x_update */
            (*task_cfg_list[index].task_update)(task_cfg_list[index].parameters);


            //cycle_counter = cycle_counter_get();
            cycle_counter_time_us = cycle_counter_time_us();

            /* Update variables */
            g_app_time_us += cycle_counter_time_us;

            if (task_dta_list[index].WCET < cycle_counter_time_us)
            {
                task_dta_list[index].WCET = cycle_counter_time_us;
            }

            /* Print out: Cycle Counter */
            //LOGGER_LOG(" %s: %lu - %s: %lu uS\r\n", GET_NAME(cycle_counter), cycle_counter, GET_NAME(cycle_counter_time_us), cycle_counter_time_us);
            //LOGGER_LOG(" %s: %lu uS\r\n", GET_NAME(g_app_time_us), g_app_time_us);
        }

        LOGGER_LOG("%d,%d\n", shared_data.pwm_active, shared_data.adc_value);
    }
}

/* Callbacks in C (https://www.geeksforgeeks.org/) */
/*
 * A callback is any executable code that is passed as an argument to another
 * code, which is expected to call back (execute) the argument at a given time.
 * In simple language, If a reference of a function is passed to another
 * function as an argument to call it, then it will be called a Callback
 * function.
 */

void HAL_SYSTICK_Callback(void)
{
	g_app_tick_cnt++;
}

/********************** end of file ******************************************/