天狼星51AVR课上程序代码.docx

1、天狼星51AVR课上程序代码51篇51单片机第二十课 PS2键盘键值解码 所属类别: 课程代码 发布日期: 2011-03-05 点击量: 383 #include#define uchar unsigned char #define uint unsigned int sbit psdata=P30;sbit psclk=P32;uchar numbit;uchar keyv;uchar key3;uchar keynum;uchar m,n;unsigned char code smg_du=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f

2、,0x77,0x7c,0x39,0x5e,0x79,0x71,0x00;unsigned char code smg_we=0x08,0x18,0x28,0x38,0x48,0x58,0x68,0x78;/*/延时函数，在12MHz的晶振频率下/大约50us的延时/*void delay_50us(uint t) uchar j; for(;t0;t-) for(j=19;j0;j-);/*/延时函数，在12MHz的晶振频率下/大约50ms的延时/*void delay_50ms(uint t) uint j; for(;t0;t-) for(j=6245;j0;j-);void main()

3、 IT0=1; /外部中断下降沿触发 EX0=1; /打开外部中断0 EA=1; /打开总中断 while(1) if(keynum=3) keynum=0; /0x1c n=key0/16; m=key0%16; P1=smg_dum; P2=smg_we0; delay_50us(20); P1=smg_dun; P2=smg_we1; delay_50us(20); void int0 () interrupt 0 if(numbit0)&(numbit keyv=keyv1; /001000000 if(psdata) keyv=keyv | 0x80; /10000000 /01 n

4、umbit+; /0 if(numbit10) numbit=0; keykeynum=keyv; keynum+; 51单片机第二十三课 实时时钟芯片DS1302的读写 所属类别: 课程代码 发布日期: 2011-03-05 点击量: 531 #include#include #define uchar unsigned char #define uint unsigned int sbit sck=P10;sbit io=P11;sbit rst=P36;sbit smgen=P23;unsigned char code smg_du=0x3f,0x06,0x5b,0x4f,0x66,0x

5、6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x00,0x10;unsigned char code smg_we=0x08,0x18,0x28,0x38,0x48,0x58,0x68,0x78;uchar time_data7=10,6,4,17,11,58,30; /年周月日时分秒uchar write_add7=0x8c,0x8a,0x88,0x86,0x84,0x82,0x80;uchar read_add7=0x8d,0x8b,0x89,0x87,0x85,0x83,0x81;uchar disp8;void write_

6、ds1302_byte(uchar dat);void write_ds1302(uchar add,uchar dat);uchar read_ds1302(uchar add);void set_rtc(void);void read_rtc(void);void time_pros(void);void display(void);/*/延时函数，在12MHz的晶振频率下/大约50us的延时/*void delay_50us(uint t) uchar j; for(;t0;t-) for(j=19;j0;j-);/*/延时函数，在12MHz的晶振频率下/大约50ms的延时/*void

7、delay_50ms(uint t) uint j; for(;t0;t-) for(j=6245;j0;j-);void write_ds1302_byte(uchar dat) uchar i; for(i=0;i1; sck=1; void write_ds1302(uchar add,uchar dat) rst=0; _nop_(); sck=0;_nop_(); rst=1; _nop_(); write_ds1302_byte(add); write_ds1302_byte(dat); rst=0; _nop_(); io=1; sck=1;uchar read_ds1302(u

8、char add) uchar i,value; rst=0; _nop_(); sck=0; _nop_(); rst=1; _nop_(); write_ds1302_byte(add); for(i=0;i1; sck=0; if(io) value=value|0x80; sck=1; rst=0; _nop_(); sck=0; _nop_(); sck=1; io=1; return value;void set_rtc(void) uchar i,j; for(i=0;i7;i+) j=time_datai/10; time_datai=time_datai%10; time_d

9、atai=time_datai+j*16; write_ds1302(0x8e,0x00); /去除写保护 for(i=0;i7;i+) write_ds1302(write_addi,time_datai); write_ds1302(0x8e,0x80); /加写保护void read_rtc(void) uchar i; for(i=0;i7;i+) time_datai=read_ds1302(read_addi); void time_pros(void) disp0=time_data6%16; disp1=time_data6/16; disp2=16; disp3=time_d

10、ata5%16; disp4=time_data5/16; disp5=16; disp6=time_data4%16; disp7=time_data4/16; void display(void) uchar i; for(i=0;i8;i+) P1=smg_dudispi; P2=smg_wei; delay_50us(20); void main(void) set_rtc(); delay_50us(20); while(1) smgen=0; rst=1; read_rtc(); rst=0; time_pros(); smgen=1; display(); smgen=0; 51

11、单片机第二十四课 数字温度传感器DS18B20测温 所属类别: 课程代码 发布日期: 2011-03-05 点击量: 506 #include#define uchar unsigned char #define uint unsigned int sbit DQ=P22;sbit smg1=P24;sbit smg2=P25;sbit smg3=P26;uchar temp;unsigned char code smg_du=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x00

12、;unsigned char code smg_we=0x08,0x18,0x28,0x38,0x48,0x58,0x68,0x78;void init_ds18b20(void);void delay(uint t);void write_byte(uchar dat);uchar read_byte(void);uchar readtemperature(void);void display(void);/*/延时函数，在12MHz的晶振频率下/大约50us的延时/*void delay_50us(uint t) uchar j; for(;t0;t-) for(j=19;j0;j-);v

13、oid main(void) while(1) temp=readtemperature(); display(); void delay(uint t) while(t-); void init_ds18b20(void) uchar n; DQ=1; delay(8); DQ=0; delay(80); DQ=1; delay(8); n=DQ; delay(4);void write_byte(uchar dat) uchar i; for(i=0;i=1; delay(4);uchar read_byte(void) uchar i,value; for(i=0;i=1; DQ=1;

14、if(DQ) value|=0x80; delay(4); return value;uchar readtemperature(void) uchar a,b; init_ds18b20(); write_byte(0xcc); /跳过ROM write_byte(0x44); /启动温度测量 delay(300); init_ds18b20(); write_byte(0xcc); write_byte(0xbe); a=read_byte(); b=read_byte(); b4; return b;void display(void) smg3=0; smg2=0; smg1=0; P

15、1=smg_dutemp%10; delay_50us(20); smg2=0; smg1=1; P1=smg_dutemp/10; delay_50us(20); 51单片机第二十一课 红外遥控解码程序设计 所属类别: 课程代码 发布日期: 2011-03-05 点击量: 504 #include#define uchar unsigned char #define uint unsigned int unsigned char code smg_du=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,

16、0x79,0x71,0x00;unsigned char code smg_we=0x08,0x18,0x28,0x38,0x48,0x58,0x68,0x78;uchar irtime;uchar startflag;uchar irdata33;uchar bitnum;uchar irreceok;uchar ircode4;uchar irprosok;uchar disp8;/*/延时函数，在12MHz的晶振频率下/大约50us的延时/*void delay_50us(uint t) uchar j; for(;t0;t-) for(j=19;j0;j-);/*/延时函数，在12MH

17、z的晶振频率下/大约50ms的延时/*void delay_50ms(uint t) uint j; for(;t0;t-) for(j=6245;j0;j-);void timer0init(void) TMOD=0x02; TH0=0x00; TL0=0x00; ET0=1; EA=1; TR0=1;void int0init(void) IT0=1; EX0=1; EA=1;void irwork(void) disp0=ircode0/16; disp1=ircode0%16; disp2=ircode1/16; disp3=ircode1%16; disp4=ircode2/16;

18、disp5=ircode2%16; disp6=ircode3/16; disp7=ircode3%16; void display(void) uchar i; for(i=0;i8;i+) P1=smg_dudispi; P2=smg_wei; delay_50us(20); void irpros(void) /0x1c uchar k,i,j; uchar value; k=1; for(j=0;j4;j+) for(i=0;i1; /7 if(irdatak6) /8 value=value | 0x80; k+; ircodej=value; irprosok=1;void mai

19、n() timer0init(); int0init(); while(1) if(irreceok) irpros(); irreceok=0; if(irprosok) irwork(); irprosok=0; display(); void timer0 () interrupt 1 irtime+; /255void int0 () interrupt 0 if(startflag) if(irtime32) /检测引导码 bitnum=0; irdatabitnum=irtime; irtime=0; bitnum+; if(bitnum=33) bitnum=0; irreceo

20、k=1; else startflag=1; irtime=0; 51单片机第十六课 串口数据收发实验 所属类别: 课程代码 发布日期: 2011-03-05 点击量: 358 #include unsigned char a;unsigned char flag;void main() TMOD=0x20; /设置定时器1为方式2 TH1=0xfd; /装入初值 TL1=0xfd; TR1=1; /启动定时器1 SM0=0; SM1=1; /设置串口为方式1 REN=1; /接受使能 EA=1; /打开总中断开关 ES=1; /打开串口中断开关 while(1) if(flag=1) ES=

21、0; flag=0; SBUF=a; while(!TI); /等待数据发送结束 TI=0; ES=1; void serial() interrupt 4 a=SBUF; P1=a; RI=0; flag=1; /标志位51单片机第十七课 字符液晶LCD1602显示 所属类别: 课程代码 发布日期: 2011-03-05 点击量: 436 #include#define uchar unsigned char #define uint unsigned int sbit rs=P24;sbit rw=P25;sbit e=P26;uchar table1= ;uchar table2=LCD

22、1602 test ok!;/*/延时函数，在12MHz的晶振频率下/大约50us的延时/*void delay_50us(uint t) uchar j; for(;t0;t-) for(j=19;j0;j-);/*/延时函数，在12MHz的晶振频率下/大约50ms的延时/*void delay_50ms(uint t) uint j; for(;t0;t-) for(j=6245;j0;j-);void write_com(uchar com) e=0; rs=0; rw=0; P0=com; delay_50us(10); e=1; delay_50us(20); e=0;void wr

23、ite_data(uchar dat) e=0; rs=1; rw=0; P0=dat; delay_50us(10); e=1; delay_50us(20); e=0; void init(void) delay_50us(300); write_com(0x38); delay_50us(100); write_com(0x38); delay_50us(100); write_com(0x38); write_com(0x38); write_com(0x08); write_com(0x01); write_com(0x06); write_com(0x0c);void main() uchar j; init(); write_com(0x80); for(j=0;j16;j+) write_data(table1j); delay_50us(10); write_com(0x80+0x40); for(j=0;j16;j+) write_data(table2j); delay_50us(10); while(1); 51单片机第十三课 矩阵键盘扫描实验 所属类别: 课程代码 发布日期: 2011-03-05 点击量: 343 #include#de