温度传感器btoerom读系列号C程序,在单片机上测试通过.docVIP

/18B20序列号存于24c02E2ROM中，再从E2ROM中读取出序列号在数码管上显示。 #includeREG52.H #includemath.h #includeINTRINS.H #define uchar unsigned char #define uint unsigned int; /*****************************************************************************/ sbit seg1=P2^0; sbit seg2=P2^1; sbit seg3=P2^2; sbit DQ=P1^7;//ds18b20 端口 sfr dataled=0x80;//显示数据端口 /**********************************************************************/ uchar temp; uchar flag_get,count,num,minute,second; uchar code tab[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x80};//7段数码管段码表共阳09,a,b,C,d,E,F,。 uchar str[3]; /***********************************************************************/ void delay(uchar MS); unsigned char ReadTemperature(void); void Init_DS18B20(void); unsigned char ReadOneChar(void); void WriteOneChar(unsigned char dat); void delay(unsigned int i); void ReadRom2EERom(unsigned char addr); extern void WrToROM_B(unsigned char Data[],unsigned char Address,unsigned char Num); extern void WrToROM_P(unsigned char Data[],unsigned char Address,unsigned char Num); extern void display(unsigned char AdrE2rom,unsigned char delytime); //extern bit WP;//之前24C02.C中WP定义为sbit,这里外部引用要定义为bit extern void mDelay(unsigned char j); /************************************************************************/ main() { ///unsigned char Number2[8]={0xfe,0xdc,0xba,0x98,0x76,0x54,0x32,0x10}; //WrToROM_P(Number2,0,8); //测试用从E2OM显示数据 OK ReadRom2EERom(0); display(0,0xf0); //mDelay(200); display(4,0xf0); //mDelay(200); } /************************************************************************/ void tim(void) interrupt 1 using 1//中断，用于数码管扫描和温度检测间隔 { TH0=0xef;//定时器重装值 TL0=0xf0; num++; if (num==50) {num=0; flag_get=1;//标志位有效 second++; if(second=60) {second=0; minute++; } } count++; if(count==1) {P2=0; dataled=str[0];}//数码管扫描 if(count==2) {P2=1; dataled=str[1];} if(count==3) { P2=2; datal