5_1_5_1.c

MSP430系列单片机接口技术及系统设计实例_光盘资料

unsigned char disbuffer[8]={0,1,3,8,0xf,5};		//定义了8个字节的显示缓冲区
unsigned char seg[]={0x3f,0x06,0x5b,0x4f,		//显示字符的段码表
	0x66,0x6d,0x7d,0x07,
	0x7f,0x6f,0x77,0x7c,
	0x39,0x5e,0x79,0x71,
	0xbf,0x86,0xdb,0xcf,
	0xe6,0xed,0xfd,0x87,
	0xff,0xef,0xf7,0xfc,
	0xb9,0xde,0xf9,0xf1,
	0x80,0x40,0x00,0x73,0xc0};
//下面为延时子程序    						
void delay(int v)
    {
        while(v!=0)v--;
    }
//下面为显示子程序            
void disp(void)
    {
    unsigned char i=0;
    unsigned char temp=0x1; 
    for(i=0;i<8;i++)			//一共8位显示器，循环8次
      {
        P1DIR=0XFF;			//定义端口P1为输出方向
        P5DIR=0XFF; 		        //定义端口P5为输出方向
        P1OUT=~temp;   			//送位选码到P1口
        temp=temp<<1; 			//准备下一位数据的位选码
        P5OUT=seg[disbuffer[i]];	//送段码
        delay(500);			//延时一会儿
      }
    }