单片机程序汇总,大家参考一下.doc

第八章4节 支持手打！！ #includereg51.h #include math.h #define PI 3.1415 unsigned int num; void main() { while (1) { for (num = 0 ; num 360 ; num++) P2= 127 +127 * sin((float)num / 180 * PI);  } } #includeabsacc.h #define DAC0832 XBYTE[0xfeff] //设置DAC0832的访问地址 unsigned char num; void main() { while (1) { for (num = 0 ; num 255 ; num++) //上升段波形 DAC0832=num; for (num = 255 ; num 0 ; num--) //下降段波形 DAC0832=num; //DAC0832转换输出 } } #includeabsacc.h #includereg51.h #define DAC1 XBYTE[0xfeff] //设置1#DAC0832输入锁存器的访问地址 #define DAC2 XBYTE[0xfdff] //设置2#DAC0832输入锁存器的访问地址 #define DAOUT XBYTE[0xefff] //两个DAC0832的DAC寄存器访问地址 void main (void){ unsigned char num; //需要转换的数据 while(1){ for(num =0; num =255; num++){ DAC1 = num; //上锯齿送入1#DAC DAC2 = 255-num; //下锯齿送入2#DAC DAOUT = num; //两路同时进行D/A转换输出 } } } /*发送程序*/ #includereg51.h #define uchar unsigned char char code map[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F};//0~9 void delay(unsigned int time){ unsigned int j = 0; for(;time0;time--) for(j=0;j125;j++); } void main(void){ uchar counter=0; //定义计数器 TMOD=0x20; //T1定时方式2 TH1 = TL1 = 0xf4; //2400b/s PCON=0; //波特率不加倍 SCON = 0x50; //串口方式1,TI和RI清零,允许接收; TR1=1; //启动T1 while(1){ SBUF = counter; //发送联络信号 while(TI==0); //等待发送完成 TI = 0; //清TI标志位 while(RI==0); //等待乙机回答 RI = 0; if(SBUF ==counter){ //若返回值与发送值相同,组织新数据 P2 = map[counter]; //显示已发送值 if(++counter9) counter=0;//修正计数器值 delay(500); } } } /*接收程序*/ #includereg51.h #define uchar unsigned char char code map[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F};//0~9 void main(void){ uchar receiv; //定义接收缓冲 TMOD=0x20; //T1定时方式2 TH1=TL1=0xf4; //2400b/s PCON=0; //波特率不加倍 SCON=0x50; //串口方式1,TI和RI清零,允许接收; TR1=1; //启动T1 while(1){