分享简洁单片机常用子程序.docVIP

　　　　/********本程序所有模块都在 11.0592 Mhz 晶振下测试通过,只供学习参考********//**************************本程序由精科创电子制作**************************/#includereg51.h//包含51单片机头文件,在51单片机C程序上,这是必须的#includeintrins.h//常用头文件，不是必须的，但这里用到其中的_nop_(空操作函数)，所以必须把这个头文件包含过来 #define uchar unsigned char//宏定义，这句话的作用就是--你这个unsigned char，太长了，我懒得写，以后就用uchar代替 #define uint unsigned int //和上面相似//***********以下是位定义*****************//sbit S1=P3^3;//按钮S1接P3.3sbit S2=P3^2;sbit S3=P3^5;sbit SPK=P3^5;//蜂鸣器接P3.5sbit P00=P0^0;sbit P01=P0^1;sbit P02=P0^2;sbit P03=P0^3;sbit P04=P0^4;sbit P05=P0^5;sbit P06=P0^6;sbit P07=P0^7;sbit P24=P2^4;sbit KeyBoadCon=P2^6;sbit col1=P1^4;sbit col2=P1^5;sbit col3=P1^6;sbit col4=P1^7;sbit Led4_1=P2^3;sbit Led4_2=P2^2;sbit Led4_3=P2^1;sbit Led4_4=P2^0;sbit DAC_WR=P3^6;//DAC 写引脚 sbit DAC_CS=P2^5;//DAC片选//***********位定义结束*****************////uchar seg[10]={0X3F,0X06,0X5B,0X4F,0X66,0X6D,0X7D,0X07,0X7F,0X6F};//七段uchar seg[10]={0XC0,0XF9,0XA4,0XB0,0X99,0X92,0X82,0XF8,0X80,0X90};//七段 小数点不亮/************* 音乐数据表 *****************/unsigned char n=0; //n为节拍常数变量unsigned char code music_tab[] ={0x18, 0x30, 0x1C , 0x10, //格式为: 频率常数, 节拍常数, 频率常数, 节拍常数,0x20, 0x40, 0x1C , 0x10,0x18, 0x10, 0x20 , 0x10,0x1C, 0x10, 0x18 , 0x40,0x1C, 0x20, 0x20 , 0x20,0x1C, 0x20, 0x18 , 0x20,0x20, 0x80, 0xFF , 0x20,0x30, 0x1C, 0x10 , 0x18,0x20, 0x15, 0x20 , 0x1C,0x20, 0x20, 0x20 , 0x26,0x40, 0x20, 0x20 , 0x2B,0x20, 0x26, 0x20 , 0x20,0x20, 0x30, 0x80 , 0xFF,0x20, 0x20, 0x1C , 0x10,0x18, 0x10, 0x20 , 0x20,0x26, 0x20, 0x2B , 0x20,0x30, 0x20, 0x2B , 0x40,0x20, 0x20, 0x1C , 0x10,0x18, 0x10, 0x20 , 0x20,0x26, 0x20, 0x2B , 0x20,0x30, 0x20, 0x2B , 0x40,0x20, 0x30, 0x1C , 0x10,0x18, 0x20, 0x15 , 0x20,0x1C, 0x20, 0x20 , 0x20,0x26, 0x40, 0x20 , 0x20,0x2B, 0x20, 0x26 , 0x20,0x20, 0x20, 0x30 , 0x80,0x20, 0x30, 0x1C , 0x10,0x20, 0x10, 0x1C , 0x10,0x20, 0x20, 0x26 , 0x20,0x2B, 0x20, 0x30 , 0x20,0x2B, 0x40, 0x20 , 0x15,0x1F, 0x05, 0x20 , 0x10,0x1C, 0x10, 0x20 , 0x