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//EXPERIMENT # 2 - EXERCISE 1
//BALMORI, KEVIN M. / GROUP # 4
//JANUARY 27, 2014
//DIFFERENT LED SEQUENCE USING SENSORS


#include<ez8.h>
#define sw1 (PBIN&0x01)
#define sw2 (PBIN&0x02)
#define sw3 (PBIN&0x04)
#define sw4 (PBIN&0x08)
void delay_ms(unsigned int delay);

void main()
{
    PADD = 0X00;// Data Direction=Output;
    PAAF = 0X00;// Alternate Function=Normal;
    PAOC = 0X00;// Output Control=Push/pull;
    PAHDE = 0XFF;// High Drive Enable=15mA;

    PBDD |= 0X0F;// Data Direction=Input;
    PBAF &=~0X0F;// Alternate Function=Normal;

    while(1)
    {
        if ((sw1==0)&&(sw2!=0)&&(sw3!=0)&&(sw4!=0))
        {
            PAOUT =~0xC0;delay_ms(500);
            PAOUT =~0x60;delay_ms(500);
            PAOUT =~0x30;delay_ms(500);
            PAOUT =~0x18;delay_ms(500);
            PAOUT =~0x0C;delay_ms(500);
            PAOUT =~0x06;delay_ms(500);
            PAOUT =~0x03;delay_ms(500);
        }
        else if ((sw1==0)&&(sw2!=0)&&(sw3==0)&&(sw4==0))
        {
            PAOUT =~0x05;delay_ms(500);
            PAOUT =~0x0A;delay_ms(500);
            PAOUT =~0x14;delay_ms(500);
            PAOUT =~0x28;delay_ms(500);
            PAOUT =~0x50;delay_ms(500);
            PAOUT =~0xA0;delay_ms(500);
        }
        else if ((sw1!=0)&&(sw2!=0)&&(sw3==0)&&(sw4!=0))
        {
            PAOUT =~0x81;delay_ms(500);
            PAOUT =~0x42;delay_ms(500);
            PAOUT =~0x24;delay_ms(500);
            PAOUT =~0x18;delay_ms(500);
        }
        else if ((sw1==0)&&(sw2==0)&&(sw3==0)&&(sw4!=0))
        {
            PAOUT =~0x01;delay_ms(500);
            PAOUT =~0x03;delay_ms(500);
            PAOUT =~0x07;delay_ms(500);
            PAOUT =~0x0F;delay_ms(500);
            PAOUT =~0x1F;delay_ms(500);
            PAOUT =~0x3F;delay_ms(500);
            PAOUT =~0x7F;delay_ms(500);
            PAOUT =~0xFF;delay_ms(500);
        }
        else
            PAOUT =~0xFF;
    }
}

void delay_ms(unsigned int delay)
{
    unsigned int x,y;
    for(x=0;x<=delay;x++)
        for(y=0;y<=512;y++);
}