#include <pic.h>
#include <stdlib.h>
#include <math.h>

//__CONFIG(XT & PROTECT & LVPDIS & PWRTEN & DEBUGDIS & BORDIS & WDTDIS & DPROT & WP1 & WP2 & WP3);
__CONFIG(XT & PROTECT & LVPDIS & PWRTEN & DEBUGDIS & BORDIS & WDTDIS & DPROT & PROTECT);
//__CONFIG(XT & LVPDIS & PWRTEN & DEBUGEN & BORDIS & WDTDIS);


unsigned char ad=0,nu=0;
unsigned char t1n=0;
unsigned char tmp=128,tmp0=128;

void Initial(void);
void interrupt t1rb(void);
void tmr1(void);
char Int2Char(char nm);


void main(void)
{
	Initial();
	
	while(1)
	{
		if(ad>=2)
			ADON=1;
		if(ad>=3)
		{
			ad=0;
			ADGO=1;
		}
		if(ADIF)
		{
			ADIF=0;
			ADON=0;
			tmp0=ADRESH;
			break;
		}
	}

	while(1)
	{
		if(ad>=2)
			ADON=1;
		if(ad>=3)
		{
			ad=0;
			ADGO=1;
		}
		if(ADIF)
		{
			ADIF=0;
			ADON=0;
			tmp=ADRESH;
		}

		if(RB0)
		{
			if(tmp>=(tmp0+7))
			{
				PORTC=Int2Char(nu);
				if(t1n>=((255-tmp)/4))
				{
					t1n=0;
					nu++;
				}
				if(nu>=10)
					nu=0;
			}
//			else
			if(tmp<(tmp0+2))
			{
//				t1n=0;
				PORTC=0;
				if(t1n>=((255-tmp)/4))
				{
					t1n=0;
					nu++;
				}
				if(nu>=10)
					nu=0;
			}
		}
		else
		{
			if(tmp<(tmp0-7))
			{
				PORTC=Int2Char(nu);
				if(t1n>=(tmp/4))
				{
					t1n=0;
					nu--;
				}
				if(nu>=10)
					nu=9;
			}
//			else
			if(tmp>=tmp0-2)
			{
//				t1n=0;
				PORTC=0;
				if(t1n>=(tmp/4))
				{
					t1n=0;
					nu--;
				}
				if(nu>=10)
					nu=9;
			}
		}
	}
}

void Initial(void)
{
	PORTA=0;
	PORTB=0;
	PORTC=0;
	TRISA=0b00000001;
	TRISB=0b00000001;

	TRISC=0;

	ADCON0=0b01000000;
	ADCON1=0b00001110;

	TMR1IF=0;
	TMR1IE=1;
	T1CON=0b00000001;
	TMR1L=0xf0;
	TMR1H=0xd8;

	OPTION=0b00001000;
	INTCON=0b11000000;

	ADIF=0;
//	tmp=128;
}



void interrupt t1rb(void)
{
	if(TMR1IE&&TMR1IF)
		tmr1();
}

void tmr1(void)
{
	TMR1ON=0;
	TMR1IF=0;
	t1n++;
	ad++;
	TMR1L=0xf0;
	TMR1H=0xd8;
	TMR1ON=1;
}

char Int2Char(char nm)
{
	switch(nm)
	{
		case 0:
			return 0x3f;
		case 1:
			return 0x06;	
		case 2:
			return 0x5b;
		case 3:
			return 0x4f;
		case 4:
			return 0x66;
		case 5:
			return 0x6d;
		case 6:
			return 0x7d;
		case 7:
			return 0x07;
		case 8:
			return 0x7f;
		case 9:
			return 0x6f;
		default:
			return 0x0;
	}
}