#include  <pic.h>
#include  <string.h>
#include  <stdio.h>
#include  <stdlib.h>


#define PIC_CLK 20000000
#include "delay_alternative_enhanced_precision.h"

//__CONFIG(WDTDIS & XT & UNPROTECT & LVPDIS);	// freq. clock 4MHz
//__CONFIG(WDTDIS & HS & UNPROTECT & LVPDIS);	// freq. clock 20MHz
__CONFIG(WDTDIS & PWRTEN & HS & UNPROTECT & DEBUGDIS & BORDIS & LVPDIS); 

#define PORTBIT(adr, bit) ((unsigned)(&adr)*8+(bit))

static bit MEM     @ PORTBIT(PORTA, 3);
static bit RDY     @ PORTBIT(PORTA, 2);
static bit LGT     @ PORTBIT(PORTA, 1);
static bit ALR     @ PORTBIT(PORTA, 0);

static bit IN1     @ PORTBIT(PORTB, 0);
static bit IN2     @ PORTBIT(PORTB, 1);
static bit PUD     @ PORTBIT(PORTB, 2);
static bit PUC     @ PORTBIT(PORTB, 3);
static bit PUB     @ PORTBIT(PORTB, 4);
static bit PUA     @ PORTBIT(PORTB, 5);


//******************************************************************************
//* function declarationis & global variables
//******************************************************************************

#define MIN3	(3*60*4)
#define SEC5	(5*4)

void DelayMs(unsigned char);
void Alarm_long(void);
void Alarm_prog(void);

int  Progressive = 1;


void main()
{
    int          vol;
    int          vdb;
    int          volume_up   = 0;
    int		 volume_down = 0;
  
	
    TRISA   = 0b00000000;  // All port A are output
    TRISB   = 0b11111111;  // All port B are input
    TRISC   = 0b00000000;  // All post C are output
	
    ADCON1  = 0x06;	   // All posts AN4-7 to digital

    PORTA   = 0b00000000;
    PORTC   = 0b00000000;


    RDY  = 0;
    ALR  = 0;
    LGT  = 0;
    MEM = 0;

    DelayMs(250);

    //##################################################
    //# main loop
    //################################################## 	
    while(1)
    {
    	//********************************************
	//* A button
	//*   Enable or disable manual alarm
    	//********************************************
	if (PUA == 1)
	{
	    if (ALR == 0)
	    {
	    	ALR = 1;
		LGT = 1;
	    }
	    else
	    {
	    	ALR = 0;
		LGT = 0;
	    }

	    DelayMs(250);
	    DelayMs(250);
	    DelayMs(250);
	    DelayMs(250);
	}
    	//********************************************
	//* B button
	//*   Enable Alarm system
    	//********************************************
	if (PUB == 1)
	{
	    Progressive = 1;

	    RDY = 1;
	    ALR = 0;
	    MEM = 0;

	    LGT = 1;
	    DelayMs(250);
	    DelayMs(250);
	    DelayMs(250);
	    DelayMs(250);
	    DelayMs(250);
	    DelayMs(250);
	    DelayMs(250);
	    DelayMs(250);
	    LGT = 0;
	}
    	//********************************************
	//* D button
	//*   Disable Alarm system
    	//********************************************
	if (PUD == 1)
	{
	    Progressive = 1;

	    RDY = 0;
	    ALR = 0;

	    LGT = 1;
	    DelayMs(250);
	    DelayMs(250);
	    DelayMs(250);
	    DelayMs(250);
	    DelayMs(250);
	    DelayMs(250);
	    DelayMs(250);
	    DelayMs(250);
	    LGT = 0;
	}
    	//********************************************
	//* Only if Alarm system is enable
    	//********************************************
	if (RDY == 1)
	{
	    //********************************************
	    //* Input signal received on vibration senson
	    //*   Start alarm with progressive incr. time
	    //********************************************
	    if (IN1 == 1)
	    {
		ALR = 1;
		LGT = 1;
		MEM = 1;

		Alarm_prog();

		ALR = 0;
		LGT = 0;

		Progressive++;
	    }
	    //********************************************
	    //* Input signal received on magnetic senson
	    //*   Start alarm with long time
	    //********************************************
	    if (IN2 == 1)
	    {
		ALR = 1;
		LGT = 1;
		MEM = 1;

		Alarm_long();

		ALR = 0;
		LGT = 0;
	    }
	}
    }
}

void Alarm_long(void)
{
    int i;


    //*******************************************
    //* create 3min loop
    //*******************************************
    for (i = 0; i < MIN3; i++)
    {
    	DelayMs(250);

	if (PUA == 1 || PUB == 1 || PUC == 1 || PUD == 1) break;
    }

}

void Alarm_prog(void)
{
    int i;


    //*******************************************
    //* max 3min for progressive alarm
    //*******************************************
    if ((SEC5 * Progressive) >= MIN3)
    	Progressive = 1;

    //*******************************************
    //* create dinamic loop
    //*******************************************
    for (i = 0; i < (SEC5 * Progressive); i++)
    {
    	DelayMs(250);

	if (PUA == 1 || PUB == 1 || PUC == 1 || PUD == 1) break;
    }
}


void DelayMs(unsigned char cnt)
{
    unsigned char	i;

    do {
	i = 4;

	do {
		DelayUs(250);
	    } while(--i);
    } while(--cnt);
}