基于msp430g2553数码管

其中，按键按一次数码管变化一次

#include "msp430g2553.h"
#define uint unsigned int
#define uchar unsigned char
void delay(uint z);
int num,wei;
unsigned long  i;
uchar table[11]={
0x3f,0x06,0x5b,0x4f,0x66,
0x6d,0x7d,0x07,0x7f,0x6f,
0x00
};
uchar table1[8]={
0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
void keyscan();
void main()
{   
  // Stop watchdog timer to prevent time out reset
        WDTCTL = WDTPW + WDTHOLD;
        //主系统时钟切换为外部高速晶振  
 if (CALBC1_8MHZ == 0xFF || CALDCO_8MHZ == 0xFF)
 {
     while(1);   // If calibration constants erased, trap CPU!!
 }
 // Configure Basic Clock
 BCSCTL1 = CALBC1_8MHZ;     // Set range
 DCOCTL = CALDCO_8MHZ;    // Set DCO step + modulation
 BCSCTL3 |= LFXT1S_2;    // Set LFXT1
       
       
        P1DIR=0XFF;//p4作为输出
        P1DIR&=~BIT3;//P1.3按键输入
        P2DIR=0XFF;//数码管段输出
      

        P1IE |=BIT3;   //使能按键P1.3引脚中断
        P1IES&=~BIT3;   //中断触发方式为上升降沿       
        P1IFG= 0x00;   //清除中断标志位
        _EINT();//开总中断
       
  while(1)
 {   
                P2OUT=table[10];
                P1OUT|=BIT5;//设置p5.5为高电平
                P2OUT=table1[wei];
                P1OUT^=BIT5;//设置p5.5为低电平 
               
                P1OUT|=BIT6;
                P2OUT=table[num];
                P1OUT^=BIT6;            
                for(i=0;i<100000;i++);
                P2OUT=table[10];               
   }
}
#pragma vector=PORT1_VECTOR
__interrupt void PORT1_ISR(void)
{
               
        for(i=0;i<1000;i++);//消抖
        if(P1IFG&BIT3)
        {
          num++;
          wei++;
          if(num==10)
            num=0;
          if(wei==8)
            wei=0;
        }
        P1IFG=0;   //清除中断标志位       
}