#include????
#include?
unsigned?char?code?digit[10]={“0123456789“};?????
unsigned?char?code?Str[]={“Test?by?DS18B20“};????
unsigned?char?code?Error[]={“Error!Check!“};?????//說明沒有檢測到DS18B20
unsigned?char?code?Temp[]={“Temp:“};?????????????
unsigned?char?code?Cent[]={“Cent“};????????????//溫度單位

sbit?RS=P2^5;???????????//寄存器選擇位將RS位定義為P2.5引腳
sbit?RW=P2^6;??????????//讀寫選擇位將RW位定義為P2.6引腳
sbit?E=P2^7;??????????//使能信號位，
sbit?BF=P0^7;??????????//忙碌標志位，，將BF位定義為P0.7引腳
sbit?DQ=P2^3;
sbit?PWM?=?P1^0;

unsigned?char?CYCLEPWM_ONcount;?
	unsigned?char?PWM_Num;



void?delay1ms（）
{
????unsigned?char?ij;?
	for（i=0;i<4;i++）
????for（j=0;j<33;j++）?;???
}

void?delaynms（unsigned?int?n）
{
????unsigned?int?i;
	for（i=0;i????delay1ms（）;
}
bit?BusyTest（void）
{
????bit?result;
	RS=0;???????
????RW=1;
????E=1;????????
????_nop_（）;???
????_nop_（）;
????_nop_（）;?
????_nop_（）;???
????result=BF;?
????E=0;?????????
????return?result;
}
void?WriteInstruction?（unsigned?char?dictate）
{???
????while（BusyTest（）==1）;???
	RS=0;??????????????????
	RW=0;???
	E=0;??????????????????
	??????????????????????????
	_nop_（）;
	_nop_（）;??????????????
	P0=dictate;???????????
	_nop_（）;
	_nop_（）;
	_nop_（）;
	_nop_（）;??????????????
	E=1;???????????????????
	_nop_（）;
	_nop_（）;
	_nop_（）;
	_nop_（）;???????????????
	???E=0;?????????????????
}

void?WriteAddress（unsigned?char?x）
{
?????WriteInstruction（x|0x80）;?
}
void?WriteData（unsigned?char?y）
{
????while（BusyTest（）==1）;?
????RS=1;???????????
????RW=0;
????E=0;????????????
????P0=y;???????????
????_nop_（）;
????_nop_（）;
????_nop_（）;
????_nop_（）;???????
????E=1;???????????
????_nop_（）;
????_nop_（）;
????_nop_（）;
	_nop_（）;????????
	E=0;????????
}

void?LcdInitiate（void）
{?????????????
?????????????
	WriteInstruction（0x38）;????
	?????????????
	WriteInstruction（0x0c）;?????
	?????????????
	WriteInstruction（0x06）;?????
	?????????????
	WriteInstruction（0x01）;????????????????

}?
unsigned?char?time;???
bit?Init_DS18B20（void）?
{
	bit?flag;?????????
	DQ?=?1;??????????
	for（time=0;time<2;time++）;
	DQ?=?0;???????????
	for（time=0;time<200;time++）;????????
	DQ?=?1;??????????
	for（time=0;time<10;time++）;
	flag=DQ;????????????
	for（time=0;time<200;time++）;
	return?（flag）;????
}

unsigned?char?ReadOneChar（void）
{
???unsigned?char?i=0;?
???unsigned?char?dat;?
???for?（i=0;i<8;i++）
???{
?????
	?????DQ?=1;??????
	?????_nop_（）;?????
	?????DQ?=?0;?????
	????dat>>=1;
	?????_nop_（）;?????
	?????DQ?=?1;?????
	?????for（time=0;time<2;time++）;??????
	?????if（DQ==1）
	?????dat|=0x80;?
	?????else
	?????dat|=0x00;??
	?????for（time=0;time<8;time++）;???????????
?????}?????????????????????
	?return（dat）;????
}
WriteOneChar（unsigned?char?dat）
{
	unsigned?char?i=0;
	for?（i=0;?i<8;?i++）
????{
	????DQ?=1;???????
	????_nop_（）;??????
	????DQ=0;??????????
	????DQ=dat&0x01;???
	??	for（time=0;time<10;time++）?;
	????DQ=1;????