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1、1、 温度uchar read_temp(void)a) uint temp;b) uchar low,high;c) Init_DS18B20();d) Write_DS18B20(0xcc);e) Write_DS18B20(0x44);f) while(!DQ);g) Init_DS18B20();h) Write_DS18B20(0xcc);i) Write_DS18B20(0xbe);j) low=Read_DS18B20();k) high=Read_DS18B20();l) temp=high&0x0f;m) temp=8;n) temp|=low;o) return (ucha
2、r)(temp*0.0625);2、 时钟void settime(uchar *p)a) uchar addr=0x8c,i=7;b) DS1302_write(0x8e,0x00); /关闭写保护c) while(i-)d) e) DS1302_write(addr,*p);f) p+;g) addr-=2;h) i) DS1302_write(0x8e,0x80);void gettime(uchar *p)j) uchar addr=0x8d,i=7;k) while(i-)l) m) *p+=DS1302_read(addr);n) addr-=2;o) void settime(u
3、char *p)uchar addr=0x80,i;Write_Ds1302(0x8e,0x00);for(i=0;i3;i+)Write_Ds1302(addr,*p+);addr+=2;Write_Ds1302(0x8e,0x80);3、 ADvoid adc_init()a) IIC_Start();b) IIC_SendByte(0x90);c) IIC_WaitAck();d) IIC_SendByte(0x05);e) IIC_WaitAck();f) IIC_Stop();void getadc(unsigned char *p)g) unsigned char i;h) IIC
4、_Start();i) IIC_SendByte(0x91);j) IIC_WaitAck();k) for(i=0;i3;i+)l) m) *p+=IIC_RecByte();n) IIC_Ack(1);o) p) *p=IIC_RecByte();q) IIC_Ack(0);r) IIC_Stop();4、 eepromvoid eeprom_write(unsigned char addr,unsigned char p)a) IIC_Start();b) IIC_SendByte(0xa0);c) IIC_WaitAck();d) IIC_SendByte(addr);e) IIC_W
5、aitAck();f) IIC_SendByte(p);g) IIC_WaitAck();h) IIC_Stop();i) Delay10ms();unsigned char eeprom_read(unsigned char addr)j) unsigned char i;k) IIC_Start();l) IIC_SendByte(0xa0);m) IIC_WaitAck();n) IIC_SendByte(addr);o) IIC_WaitAck();p) q) IIC_Start();r) IIC_SendByte(0xa1);s) IIC_WaitAck();t) i=IIC_Rec
6、Byte();u) IIC_Ack(0);v) IIC_Stop();w) return i;5、 蜂鸣器void BuzzInit()a) P2=(P2&0x1f)|0xa0);b) P0=0x00;c) P2&=0x1f;6、 显示void Display()a) static uchar dspom=0;b) P2=(P2&0x1f)|0xe0);c) P0=0xff;d) P2=(P2&0x1f)|0xc0);e) P0=1dspom;f) P2=(P2&0x1f)|0xe0);g) P0=tabdspbufdspom;h) P2&=0x1f;i) if(dspom=7)j) dspo
7、m=0;k) elsel) dspom+;7、 按键（0-9、-、不亮、C、H）code tab=0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xbf,0xff,0xc6,0x89;unsigned char key_scan()a) static uchar keytime=0;b) uchar i;c) P3|=0x0f;d) i=P3&0x0f;e) if(i=0x0f)f) if(keytime2)key_time=0;return 1;elsekey_time=0;elsekey_time+;switch(a)case 0x0e
8、:hang=4;break;case 0x0d:hang=3;break;case 0x0b:hang=2;break;case 0x07:hang=1;break;default:hang=0;keyline1=1;keyline2=1;keyline3=1;keyline4=1;P3&=0xf0;if(!keyline1)lie=1;else if(!keyline2)lie=2;else if(!keyline3)lie=3;elselie=4;keyvalue=lie*4+hang-1;return 2;return 0;9、 串口void sendstr(unsigned char
9、*p)ES=0;while(*p!=0)SBUF=*p+;while(!TI);TI=0;ES=1;void uart_isr() interrupt 4unsigned char a;static unsigned char i;RI=0;rectabi+=SBUF;/ if(rectab0 = A)&(rectab1 = A)&(rectab2 = A)&(rectab3 = S)&(rectab4 = S)&(rectab5 = S)if(strcmp(rectab,AAASSS)=0)for(a=0;a6;a+)rectaba=0;i=0;/ES=0;uartflag=1;10、 超声波unsigned int sonic_test()unsigned int p;for(p=0;p8;p+)TX=1;Delay10us();TX=0;Delay10us();while(!RX);TR1=1;while(RX=1)&(TF1=0);TR1=0;if(TF1=1)TF1=0;return 999;elsep=TH1;p=8;p|=TL1;p*=0.017;TH1=0;TL1=0;return p;
