基于msp430f249单片机的7段数码管显示

#include <msp430f249.h>
#include<stdbool.h>

/************************************************************************************
* AUTHOR: yyj
* DATE: 2014-11-21
* MODIFY: 2014-11-21 9:08
*************************************************************************************/

/************************************************************************************
* progect: 7SEG
* mcu: msp430f249
* component：    7seg-cc、74hc573
* datesheet: PxDIR
*************************************************************************************/

#define uchar unsigned char

unsigned long num;
uchar j, k;
unsigned a0, b0, c0, d0, e0, f0;

/*sbit dula = P2^0;
sbit wela = P2^1;
sbit cs88 = P2^3;
sbit LCD1602 = P2^5;
sbit DS1302 = P2^7;
sbit CS88 = P2^2;*/

void delay(uchar i);
void display(uchar a, uchar b, uchar c, uchar d, uchar e, uchar f);

uchar table[] = {0x3f, 0x06, 0x5b, 0x4f, 0x66, 0x6d, 0x7d, 0x07, 0x7f, 0x6f, 0x77, 0x7c, 0x39, 0x5e, 0x79, 0x71, 0x00};

void delay(uchar i)
{
    for(j=i; j>0; j--)
    {
        for(k=250; k>0; k--);
    }
}

void display(uchar a, uchar b, uchar c, uchar d, uchar e, uchar f)
{
    P2DIR = 0xff;
    P2OUT &= ~BIT0;
    //dula = 0;
    P1DIR = 0xff;
    P1OUT = table[a];
    //P0 = table[a];
    P2OUT |= BIT0;
    //dula = 1;
    P2OUT |= BIT0;
    //dula = 0;
    P2OUT &= ~BIT1;
    //wela = 0;
    //P2DIR = 0xff;
    P1OUT = 0xfe;
    //P0 = 0xfe;
    P2OUT &= ~BIT1;
    //wela = 0;
    P2OUT |= BIT1;
    //wela = 1;
    delay(5);

    P1OUT = table[b];
    P2OUT |= BIT0;
    //dula = 1;
    P2OUT &= ~BIT0;
    //dula = 0;
    //P1DIR = 0xff;
    P1OUT = 0xfd;
    P2OUT |= BIT1;
    //wela = 1;
    P2OUT &= ~BIT1;
    //wela = 0;
    delay(5);

    P1OUT = table[c];
    //P0 = table[c];
    P2OUT |= BIT0;
    //dula = 1;
    P2OUT &= ~BIT0;
    //dula = 0;
    //P1DIR = 0xff;
    P1OUT = 0xfb;
    //P0 = 0xfb;
    P2OUT |= BIT1;
    //wela = 1;
    P2OUT &= ~BIT1;
    //wela = 0;
    delay(5);

    P1OUT = table[d];
    //P0 = table[d];
    P2OUT |= BIT0;
    //dula = 1;
    P2OUT &= ~BIT0;
    //dula = 0;
    //P1DIR = 0xff;
    P1OUT = 0xf7;
    //P0 = 0xf7;
    P2OUT |= BIT1;
    //wela = 1;
    P2OUT &= ~BIT1;
    //wela = 0;
    delay(5);

    P1OUT = table[e];
    //P0 = table[e];
    P2OUT |= BIT0;
    //dula = 1;
    P2OUT &= ~BIT0;
    //dula = 0;
    //P1DIR = 0xff;
    P1OUT = 0xef;
    //P0 = 0xef;
    P2OUT |= BIT1;
    //wela = 1;
    P2OUT &= ~BIT1;
    //wela = 0;
    delay(5);

    P1OUT = table[f];
    //P0 = table[f];
    P2OUT |= BIT0;
    //dula = 1;
    P2OUT &= ~BIT0;
    //dula = 0;
    //P1DIR = 0xff;
    P1OUT = 0xdf;
    //P0 = 0xdf;
    P2OUT |= BIT1;
    //wela = 1;
    P2OUT &= ~BIT1;
    //wela = 0;
    delay(5);
}

void init()
{
    WDTCTL = (0x5a << 8) | (1 << 7);
    P1SEL=0X00;
    P2SEL=0X00;
}

void main()
{
    init();
    num = 87530;
    P1DIR = 0xff;
    P1OUT = 0X00;

    while(1)
    {
        if(num < 10)
        {
            a0 = num; b0 = 16; c0 = 16; d0 = 16; e0 = 16; f0 = 16;
        }

        else
        {
            if(num < 100)
            {
                a0 = num / 10; b0 = num % 10; c0 = 16; d0 = 16; e0 = 16; f0 = 16;
            }

            else
            {
                if(num < 1000)
                {
                    a0 = num / 100; b0 = num % 100 / 10; c0 = num % 10; d0 = 16; e0 = 16; f0 = 16;
                }

                else
                {
                    if(num < 10000)
                    {
                        a0 = num / 1000; b0 = num % 1000 / 100; c0 = num % 100 / 10; d0 = num % 10; e0 = 16; f0 = 16;
                    }

                    else
                    {
                        if(num < 100000)
                        {
                            a0 = num / 10000; b0 = num % 10000 / 1000; c0 = num % 1000 / 100; d0 = num % 100 / 10; e0 = num % 10; f0 = 16;
                        }

                        else
                        {
                            if(num < 1000000)
                            {
                                a0 = num / 100000; b0 = num % 100000 / 10000; c0 = num % 10000 / 1000; d0 = num % 1000 / 100; e0 = num % 100 / 10; f0 = num % 10;
                            }
                        }
                    }
                }

            }
        }

        display(a0, b0, c0, d0, e0, f0);
    }
}