单片机复习code程序

//8255数码管滚动显示20120818 //ＡＬＥ的作用:访问片外存储器时，ＡＬＥ为有效高电平， //Ｐ０口可做外部地址锁存器的锁存信号 #include #include #define uint unsigned int #define uchar unsigned char #define PA XBYTE[0xfff8] //1111 1111 111 1000 #define PB XBYTE[0xfff9] //1111 1111 111 1001 #define COM XBYTE[0xfffb] //1111 1111 111 1011

uchar code weima[]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};//共阳极 /*uchar code table[]= {0xc0,0xf9,0xa4,0xb0, 0x99,0x92,0x82,0xf8, 0x80,0x90,0x88,0x83, 0xc6,0xa1,0x86,0x8e}; //0—F */ uchar code duanma[]={0xff,0xff,0xff,0xff,0xff,0xff,0xff, 0xa4,0xc0, 0xf9, 0xa4,0xc0,0x80,0xf9,0x80, 0xff,0xff,0xff,0xff,0xff,0xff,0xff};

void delayms(uint z); void main() { uchar i,j,k; P3=0xfe; COM=0x80; while(1) { for(j=0;j<10;j++) //为了延长显示时间 { for(i=0;i<8;i++) { PB=weima[i]; PA=duanma[i+k]; delayms(1); } } k=(k+1)%15; //8+14=22 } }

void delayms(uint z) { uchar i; while(z--) for(i=0;i<120;i++); } /* //锯齿波 #include #include #define uint unsigned int #define uchar unsigned char #define DAC0832 XBYTE[0x7fff]

void main() { uchar i; while(1) { for(i=0;i<250;i++) DAC0832=i; } } */

/* //三角波 #include #include #define uint unsigned int #define uchar unsigned char #define DAC0832 XBYTE[0x7fff]

void delayms(uint z); void main() { uchar i; while(1) { for(i=0;i<250;i++) { DAC0832=i; //没有delayms()函数T=2ms delayms(1); //加了delayms()函数T=0.5s } for(i=250;i>0;i--) { DAC0832=i; delayms(1); } } }

void delayms(uint z) { uint x,y; for(x=120;x>0;x--) for(y=z;y>0;y--); } */

//梯形 #include #include #define uint unsigned int #define uchar unsigned char #define DAC0832 XBYTE[0x7fff]

void delayms(uint z); void main() { uchar i; while(1) { for(i=0;i<250;i++) { DAC0832=i; //没有delayms()函数T=2ms // delayms(1); //加了delayms()函数T=0.5s } DAC0832=250; //可以不用 delayms(1); for(i=250;i>0;i--) { DAC0832=i; // delayms(1); } } }

void delayms(uint z) { uint x,y; for(x=120;x>0;x--) for(y=z;y>0;y--); }

//先开输入寄存器，然后关闭输入寄存器，再开DAC寄存器 #include #include #define input1 XBYTE[0x8fff] #define input2 XBYTE[0xa7ff] #define DACR XBYTE[0x2fff] #define uint unsigned int #define uchar unsigned char

void delayms(uint z); void transmit(uchar date1,uchar date2); void main() { uchar i,j; while(1) { for(i=0,j=255;i<255;i++,j--) { transmit(i,j); } } }

void delayms(uint z) { uint x,y; for(x=120;x>0;x--) for(y=z;y>0;y--); }

//2路信号 void transmit(uchar date1,uchar date2) { input1=date1; input2=date2; DACR=0; } //先开输入寄存器，然后关闭输入寄存器，再开DAC寄存器 #include #include #define input XBYTE[0x8fff] #define DACR XBYTE[0x2fff] #define uint unsigned int #define uchar unsigned char

sbit key1=P3^0; sbit key2=P3^1; sbit key3=P3^3; sbit key4=P3^4;zzzx

void delayms(uint z) { uint x,y; for(x=120;x>0;x--) for(y=z;y>0;y--); } void main() { uchar i,j,k; while(1) { if(key1==0) { i++; while(!key1); } if(key2==0) { i--; while(!key3); } if(key3==0) { j=j+10; while(!key1); } if(key4==0) { j=j-10; while(!key3); } for(k=0;k<0x80+j;k++) { input=k; DACR=0; delayms(i); } } }

AT24C02 #include #include #define uint unsigned int #define uchar unsigned char #define NOP5() {_nop_();_nop_();_nop_();_nop_();_nop_();}

sbit SDA=P2^5; sbit SCL=P2^6;

void delayms(uint z); void start_i2c(); void stop_i2c(); void ack(); void noack(); void write_byte(uchar j); void write_i2c(uchar add,uchar date); uchar read_byte(); uchar read_current(); uchar read_random(uchar add); uchar code weima[]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80}; uchar code duanma[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90}; // 显示段码值0~9 uchar code led[]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};

void main() { uchar i; SDA=1; SCL=1; for(i=0;i<8;i++) { write_i2c(i,weima[i]);