用stc89c52单片机 c语言编的i2c总线 温度传感器ds1621的程序 非常急！！！！！！！

#include<at89x51.h>

#define uchar unsigned char

#define uint unsigned int

sbit SCL=P3^1

sbit SDA=P3^2

void delay(uint i)

{

uchar j

while(i--)

for(j=0j<100j++)

}

void write_add(uchar r)//r=1 读否则写

{

uchar i

uchar add_rw

if(r)

add_rw=0x91 //读

else

add_rw=0x90 //写蚂码

SCL=1 //START

SDA=1

SDA=0

SCL=0

for(i=0i<8i++) //ADDRESS

{

if(add_rw&0x80)

SDA=1

else SDA=0

SCL=1

SCL=0

add_rw=add_rw<<1

}

SDA=1

SCL=1

while(SDA) //等待应答

SCL=0

}

void write_data(uchar d)

{

uchar i

SCL=0

for(i=0i<8i++) //DATA

{

if(d&0x80)

SDA=1

else SDA=0

SCL=1

SCL=0

d=d<<1

}

SDA=1

SCL=1

while(SDA) //等待应答

SCL=0

}

void stop(void)

{

SCL=1

SDA=1

}

uchar read_data(uchar over)

{

uchar i,d

SCL=0

for(i=0i<8i++) //DATA

{

d=d<<1

SCL=1

if(SDA)

d=d|0x01

SCL=0

}

if(over) SDA=1

else SDA=0

SCL=1 //应答

SCL=0

SDA=0

return d

}

void write_cmd(uchar d)

{

uchar i,w_add=0x90

SCL=1 //START

SDA=1

SDA=0

SCL=0

for(i=0i<8i++) //ADDRESS

{

if(w_add&0x80)

SDA=1

else SDA=0

SCL=1

SCL=0

w_add=w_add<<1

}

SDA=1

SCL=1

while(SDA) //等待应答

SCL=0

SDA=0

for(i=0i<8i++) //DATA

{

if(d&0x80)

SDA=1

else SDA=0

SCL=1

SCL=0

d=d<<1

}

SDA=1

SCL=1

while(SDA) //等待樱物配应答

SCL=0

SDA=0

SCL=1

SDA=1

}

uchar read_tmp(void)

{

uchar h,l

write_add(0)

write_data(0xee)//转换

stop()

delay(1000)

write_add(0)

write_data(0xaa)//读温度脊指

stop()

write_add(1)

h=read_data(0)

l=read_data(1)

stop()

return(h)

}

void main(void)

{

while(1)

P0=read_tmp()

}

显示部分我用的串口，你改改就可以了

#include"歼数雀reg52.h"

#define u8 unsigned char

#define u16 unsigned int

sbit fengming_out=P0^0

main()

{

sp=0x5f

T6963_initialize()

eeprom_main()

key_init()

key_in()

while(1)

{

display

}

}

上面那部分氏早太乱了，不好看毕竖

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