#include????
#include????
#include????
#include????
#include????
#include????
#include????
#include????
#include????
#include????
#include????
#include????
#include????
#include????
#include???

#define?DEVICE_NAME	“TEM-18B20-2440-DRIVE“
#define?GPIO?S3C2410_GPF（0）
#define?INT?S3C2410_GPIO_INPUT
#define?OUT?S3C2410_GPIO_OUTPUT
#define?GLOBALMEM_SIZE	0x1000	/*全局內存最大4K字節*/
#define?MEM_CLEAR?0x1??/*清0全局內存*/
#define?DS18B20_MAJOR?253????
#define?DS18B20_MINOR?0
#define??MEM_MAJOR?DS18B20_MAJOR
#define??MEM_MINOR?DS18B20_MINOR
#define??mem_class?DS18B20_CLASS
struct?class?*mem_class?;
void??class_create_release?（struct?class?*cls）;
static?int?ds18b20_major?=?DS18B20_MAJOR;
struct?ds18b20_dev?{
	struct?cdev?cdev;?/*cdev結構體*/
	unsigned?char?mem[GLOBALMEM_SIZE];?/*全局內存*/
};

struct?ds18b20_dev?*ds18b20_devp;?/*設備結構體指針*/

unsigned?char?sdata;?
unsigned?char?xiaoshu1;
unsigned?char?xiaoshu2;
unsigned?char?xiaoshu;

void?tmreset?（void）?//復位函數
{??????

	s3c2410_gpio_cfgpin（GPIO?OUT）;//GPF（0）設置成輸出模式
	s3c2410_gpio_setpin（GPIO?1）;//GPF（0）為高電位
	udelay（100）;//延時100us?
	s3c2410_gpio_setpin（GPIO?0）;//GPF（0）為低電位
	udelay（600）;//延時600us?產生復位脈沖
	s3c2410_gpio_setpin（GPIO?1）;
	udelay（100）;//延時100us?釋放總線
	s3c2410_gpio_cfgpin（GPIO?INT）;//GPF（0）為輸入模式
}??

void?tmwbyte?（unsigned?char?dat）//寫位函數
{???????????????????????
	unsigned?char?j;
	s3c2410_gpio_cfgpin（GPIOOUT）;//管腳設為輸出模式
	for?（j=1;j<=8;j++）??????
	{?
		s3c2410_gpio_setpin（GPIO?0）;?//管腳為低電位，產生寫信號
		udelay（1）;?//1us
		if（（dat&0x01）==1）//判斷是否已經寫過
		{
			s3c2410_gpio_setpin（GPIO?1）;//管腳為高電位	??	??
		}	??
		else?
		{
		}
		udelay（60）;//寫時序
		s3c2410_gpio_setpin（GPIO?1）;//釋放總線
		udelay（15）;//總線恢復時間
		dat?=?dat?>>?1;//數據右移一位，準備下一位數據的傳送
	}??
	s3c2410_gpio_setpin（GPIO1）;//管腳為低電位，寫結束
}?

unsigned?char?tmrbyte?（void）//讀位函數
{???
	unsigned?char?iu=0;??????

	for?（i=1;i<=8;i++）??????
	{

????????????????s3c2410_gpio_cfgpin（GPIO?OUT）;//設為輸出模式
		s3c2410_gpio_setpin（GPIO0）;?//管腳拉低，產生讀信號
????????????????s3c2410_gpio_setpin（GPIO1）;
		udelay（2）;//延時1us
????????????????s3c2410_gpio_setpin（GPIO0）;
????????????????udelay（2）;
????????????????s3c2410_gpio_setpin（GPIO1）;
????????????????udelay（8）;
		u?>>=?1;?//右移1位，準備對下一位
		s3c2410_gpio_cfgpin（GPIOINT）;?//設為輸入模式
		if（?s3c2410_gpio_getpin（GPIO））????
????????????????u=u|0x80;//判斷是否讀成功，沒有成功
		udelay（60）;??//延時60us
	}??
	return?（u）;???//返回讀到的數據
}

void?DS18B20PRO（void）????//DS18B20數據的采取?????
{????
	unsigned?char?ab;?
	tmreset（）;?????????
	udelay（420）;
	tmwbyte（0xcc）;????//跳躍ROM?????
	tmwbyte（0x44）;?????//溫度轉換?
	mdelay（750）;
	tmreset?（）;????
	udelay（400）;
	tmwbyte?（0xcc）;??
	tmwbyte?（0xbe）;??//從RAM中讀數據
	a?=?tmrbyte?（）;
	b=?tmrbyte?（）;
	sdat

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件?????582472??2012-11-27?15:39??to?teacher\18b20\ds18b20

?????文件????????743??2012-11-27?15:39??to?teacher\18b20\qt

?????文件????????592??2012-11-27?15:39??to?teacher\18b20\setARM_env

?????文件?????512089??2012-11-27?15:39??to?teacher\18b20\standarddialogs

?????文件?????464558??2012-11-28?15:07??to?teacher\18b20.tar.gz

?????文件???????5737??2012-11-27?12:39??to?teacher\ds18b20-mini2440.c

?????文件????????674??2012-11-27?12:38??to?teacher\ds18b20.c

?????文件????????832??2012-11-29?19:38??to?teacher\profile

?????文件????????435??2012-11-27?12:40??to?teacher\qt-display\main.cpp

?????文件?????299384??2012-11-27?12:40??to?teacher\qt-display\main.o

?????文件???????9734??2012-11-27?12:40??to?teacher\qt-display\Makefile

?????文件???????2386??2012-11-27?12:40??to?teacher\qt-display\moc_standarddialogs.cpp

?????文件?????293252??2012-11-27?12:40??to?teacher\qt-display\moc_standarddialogs.o

?????文件????????592??2012-11-27?12:40??to?teacher\qt-display\setARM_env

?????文件?????516353??2012-11-27?12:40??to?teacher\qt-display\standarddialogs

?????文件???????3473??2012-11-27?12:40??to?teacher\qt-display\standarddialogs.cpp

?????文件????????746??2012-11-27?12:40??to?teacher\qt-display\standarddialogs.h

?????文件?????309416??2012-11-27?12:40??to?teacher\qt-display\standarddialogs.o

?????文件????????141??2012-11-27?12:40??to?teacher\qt-display\standarddialogs.pro

?????文件??????20432??2012-11-27?12:40??to?teacher\qt-display\standarddialogs.pro.user

?????文件????????495??2012-11-27?12:40??to?teacher\qt-display\standarddialogs_zh.qm

?????文件????????684??2012-11-27?12:40??to?teacher\qt-display\standarddialogs_zh.ts

?????文件????????783??2012-11-29?19:39??to?teacher\qt4

?????文件???????1593??2012-11-29?19:40??to?teacher\rcS

?????文件?????106920??2012-11-29?19:52??to?teacher\溫度檢測系統設計信息.pptx

?????目錄??????????0??2012-11-29?19:48??to?teacher\18b20

?????目錄??????????0??2012-11-29?19:48??to?teacher\qt-display

?????目錄??????????0??2012-11-30?11:41??to?teacher

-----------?---------??----------?-----??----

??????????????3134516????????????????????28

............此處省略1個文件信息