24C02数据读取到数码管显示.doc

/* 1001qq625799961 */*: 24C021 SE5 ON(2-3)SE11EEPROM (2-3)*/*/#include #include #define uint unsigned int#define uchar unsigned char#define _Nop() _nop_()/*/#define sled_dm_port P0 /*LED*/#define sled_wm_port P2 /*LED*/*IIC*/sbit SDA=P34; /*I2C*/sbit SCL=P33; /*I2C*/#define at24c02 0xa0 /*IC*/*/uchar ack; /*/*/uchar mun_to_char=0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e;/* 0 1 2 3 4 5 6 7 8 9 a b c d e f */*/uchar code sled_bit_table=0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe;/*: void Start_I2c();: I2C,I2C.*/void Start_I2c()SDA=1; /*/_Nop();SCL=1;_Nop(); /*4.7us,*/_Nop();_Nop();_Nop();_Nop();SDA=0; /*/_Nop(); /* 4s*/_Nop();_Nop();_Nop();_Nop();SCL=0; /*I2C */_Nop();_Nop();/*: void Stop_I2c();: I2C,I2C.*/void Stop_I2c()SDA=0; /*/_Nop(); /*/SCL=1; /*4s*/_Nop();_Nop();_Nop();_Nop();_Nop();SDA=1; /*I2C*/_Nop();_Nop();_Nop();_Nop();/*: void SendByte(uchar c);: c,.(ack=0 )ack=1; ack=0*/void SendByte(uchar c)uchar BitCnt;for(BitCnt=0;BitCnt8;BitCnt+) /*8*/if(cBitCnt)&0x80)SDA=1; /*/else SDA=0;_Nop();SCL=1; /*/_Nop();_Nop(); /*4s*/_Nop();_Nop();_Nop();SCL=0;_Nop();_Nop();SDA=1; /*8*/_Nop();_Nop();SCL=1;_Nop();_Nop();_Nop();if(SDA=1)ack=0;else ack=1; /*/SCL=0;_Nop();_Nop();/*: uchar RcvByte();: ,()*/uchar RcvByte()uchar retc;uchar BitCnt;retc=0;SDA=1; /*/for(BitCnt=0;BitCnt8;BitCnt+)_Nop();SCL=0; /*/_Nop();_Nop(); /*4.7s*/_Nop();_Nop();_Nop();SCL=1; /*/_Nop();_Nop();retc=retc1;if(SDA=1)retc=retc+1; /*,retc */_Nop();_Nop();SCL=0;_Nop();_Nop();return(retc);/*: void Ack_I2c(bit a);:,()*/void Ack_I2c(bit a)if(a=0)SDA=0; /* */else SDA=1;_Nop();_Nop();_Nop();SCL=1;_Nop();_Nop(); /*4s*/_Nop();_Nop();_Nop();SCL=0; /*I2C*/_Nop();_Nop();/*: bit ISendStr(uchar sla,uchar suba,ucahr *s,uchar no);: ,slasubasno1 ,no8Byte*/bit ISendStr(uchar sla,uchar suba,uchar *s,uchar no)uchar i;if(no=0) return(1);Start_I2c(); /*/SendByte(sla); /*/if(ack=0)return(0);SendByte(suba); /*/if(ack=0)return(0);for(i=0;ino;i+)SendByte(*s); /*/if(ack=0)return(0);s+;Stop_I2c(); /*/return(1);/*: bit IRcvStr(uchar sla,uchar suba,ucahr *s,uchar no);: ,slasubasno1 ,no8Byte*/bit IRcvStr(uchar sla,uchar suba,uchar *s,uchar no)uchar i;Start_I2c(); /*/SendByte(sla); /*/if(ack=0)return(0);SendByte(suba); /*/if(ack=0)return(0);Start_I2c();SendByte(sla+1);if(ack=0)return(0);for(i=0;ino-1;i+)* s=RcvByte(); /*/Ack_I2c(0); /*/s+;* s=RcvByte();Ack_I2c(1); /*/Stop_I2c(); /*/return(1);/*1MS*/void delay_1ms(uchar x)uchar j;while(x-)for(j=0;j125;j+);/*/void main()uchar i;uchar j;uchar temp2; /*IIC*/uchar sled_disp_buff8=0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff; /*8*/IRcvStr(at24c02,0x60,temp,2); /*/if(temp0!=temp1) /*EEPROMEEPROM*/temp0 = 0;temp1 = temp0;ISendStr(at24c02,0x60,temp,2); /*EEPROM*/temp0+;temp1 = temp0;ISendStr(at24c02,0x60,temp,2); /*EEPROM*/*/sled_disp_buff0 = 0xce; /* */sled_disp_buff1 = mun_to_chartemp0/0x10;sled_disp_buff2 = mun_to_chartemp0%0x10;sled_disp_buff3 = 0xf1; /* */sled_disp_buff5 = mun_to_chartemp0/100;sled_disp_buff6 = mun_to_chartemp0%100/10;sled_disp_buff7 = mun_to_chartemp0