/*
 * Copyright 2016-2020 NXP
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * o Redistributions of source code must retain the above copyright notice, this list
 *   of conditions and the following disclaimer.
 *
 * o 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.
 *
 * o Neither the name of NXP Semiconductor, Inc. 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    LPC844_Project.c
 * @brief   Application entry point.
 */
/* #include <stdio.h>
 * #include "board.h"
 * #include "peripherals.h"
 * #include "pin_mux.h"
 */
#include "clock_config.h"
#include "LPC844.h"

#define SYSTICK_FREQ_HZ			200u

/*******************************************************************************
 * Global variables
 ******************************************************************************/
volatile uint32_t systick_counter;
volatile uint8_t test;
volatile uint8_t raw_switches_index;

/*******************************************************************************
 * SysTick interrupt handler.
 ******************************************************************************/
void SysTick_Handler(void)
{
    if (systick_counter != 0U)
    {
        systick_counter--;
    }

    test = raw_switches_index;

    if(raw_switches_index++ > 2) {
    	raw_switches_index = 0;
    }
}

/*
 * @brief   Application entry point.
 */
int main(void) {
  	/* Init board hardware. */
    BOARD_InitBootClocks();

    raw_switches_index = 0;

    // Set systick reload value
    if (SysTick_Config(SystemCoreClock / SYSTICK_FREQ_HZ)) {	// If illegal load value
        while (1) {
        }
    }

    while(1) {
        /* 'Dummy' NOP to allow source level single stepping of
            tight while() loop */
        __asm volatile ("nop");
    }
    return 0 ;
}