//?This?library?is?free?software;?you?can?redistribute?it?and/or
//?modify?it?under?the?terms?of?the?GNU?Lesser?General?Public
//?License?as?published?by?the?Free?Software?Foundation;?either
//?version?2.1?of?the?License?or?（at?your?option）?any?later?version.

//?Version?3.7.2?modified?on?Dec?6?2011?to?support?Arduino?1.0
//?See?Includes...
//?Modified?by?Jordan?Hochenbaum

#include?“DallasTemperature.h“

#if?ARDUINO?>=?100
????#include?“Arduino.h“???
#else
extern?“C“?{
????#include?“WConstants.h“
}
#endif

DallasTemperature::DallasTemperature（OneWire*?_oneWire）
??#if?REQUIRESALARMS
??:?_AlarmHandler（&defaultAlarmHandler）
??#endif
{
??_wire?=?_oneWire;
??devices?=?0;
??parasite?=?false;
??bitResolution?=?9;
??waitForConversion?=?true;
??checkForConversion?=?true;
}

//?initialise?the?bus
void?DallasTemperature::begin（void）
{
??DeviceAddress?deviceAddress;

??_wire->reset_search（）;
??devices?=?0;?//?Reset?the?number?of?devices?when?we?enumerate?wire?devices

??while?（_wire->search（deviceAddress））
??{
????if?（validAddress（deviceAddress））
????{
??????if?（!parasite?&&?readPowerSupply（deviceAddress））?parasite?=?true;

??????ScratchPad?scratchPad;

??????readScratchPad（deviceAddress?scratchPad）;

	??bitResolution?=?max（bitResolution?getResolution（deviceAddress））;

??????devices++;
????}
??}
}

//?returns?the?number?of?devices?found?on?the?bus
uint8_t?DallasTemperature::getDeviceCount（void）
{
??return?devices;
}

//?returns?true?if?address?is?valid
bool?DallasTemperature::validAddress（uint8_t*?deviceAddress）
{
??return?（_wire->crc8（deviceAddress?7）?==?deviceAddress[7]）;
}

//?finds?an?address?at?a?given?index?on?the?bus
//?returns?true?if?the?device?was?found
bool?DallasTemperature::getAddress（uint8_t*?deviceAddress?uint8_t?index）
{
??uint8_t?depth?=?0;

??_wire->reset_search（）;

??while?（depth?<=?index?&&?_wire->search（deviceAddress））
??{
????if?（depth?==?index?&&?validAddress（deviceAddress））?return?true;
????depth++;
??}

??return?false;
}

//?attempt?to?determine?if?the?device?at?the?given?address?is?connected?to?the?bus
bool?DallasTemperature::isConnected（uint8_t*?deviceAddress）
{
??ScratchPad?scratchPad;
??return?isConnected（deviceAddress?scratchPad）;
}

//?attempt?to?determine?if?the?device?at?the?given?address?is?connected?to?the?bus
//?also?allows?for?updating?the?read?scratchpad
bool?DallasTemperature::isConnected（uint8_t*?deviceAddress?uint8_t*?scratchPad）
{
??readScratchPad（deviceAddress?scratchPad）;
??return?（_wire->crc8（scratchPad?8）?==?scratchPad[SCRATCHPAD_CRC]）;
}

//?read?device‘s?scratch?pad
void?DallasTemperature::readScratchPad（uint8_t*?deviceAddress?uint8_t*?scratchPad）
{
??//?send?the?command
??_wire->reset（）;
??_wire->select（deviceAddress）;
??_wire->write（READSCRATCH）;

??//?TODO?=>?collect?all?comments?&??use?simple?loop
??//?byte?0:?temperature?LSB??
??//?byte?1:?temperature?MSB
??//?byte?2:?high?alarm?temp

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

?????文件???????3961??2011-12-11?15:44??dallasTemperatureControl\change.txt

?????文件??????21604??2011-12-11?15:44??dallasTemperatureControl\DallasTemperature.cpp

?????文件???????6795??2011-12-11?15:44??dallasTemperatureControl\DallasTemperature.h

?????文件???????4326??2011-12-11?15:44??dallasTemperatureControl\examples\Alarm\Alarm.pde

?????文件???????3899??2011-12-11?15:44??dallasTemperatureControl\examples\AlarmHandler\AlarmHandler.pde

?????文件???????4767??2011-12-11?15:44??dallasTemperatureControl\examples\Multiple\Multiple.pde

?????文件????????928??2011-12-11?15:44??dallasTemperatureControl\examples\Simple\Simple.pde

?????文件???????3992??2011-12-11?15:44??dallasTemperatureControl\examples\Single\Single.pde

?????文件???????3674??2011-12-11?15:44??dallasTemperatureControl\examples\Tester\Tester.pde

?????文件???????1916??2011-12-11?15:44??dallasTemperatureControl\examples\WaitForConversion\WaitForConversion.pde

?????文件???????2128??2011-12-11?15:44??dallasTemperatureControl\examples\WaitForConversion2\WaitForConversion2.pde

?????文件???????1351??2011-12-11?15:44??dallasTemperatureControl\keywords.txt

?????文件???????1916??2011-12-11?15:44??dallasTemperatureControl\README.TXT

?????文件???????2763??2011-10-29?12:18??OneWire\examples\DS18x20_Temperature\DS18x20_Temperature.pde

?????文件???????1907??2011-10-29?03:03??OneWire\examples\DS2408_Switch\DS2408_Switch.pde

?????文件???????4099??2011-10-29?01:51??OneWire\examples\DS250x_PROM\DS250x_PROM.pde

?????文件????????819??2011-10-29?03:39??OneWire\keywords.txt

?????文件??????16361??2011-11-01?11:52??OneWire\OneWire.cpp

?????文件???????7206??2011-11-01?11:52??OneWire\OneWire.h

?????目錄??????????0??2012-12-08?17:23??dallasTemperatureControl\examples\Alarm

?????目錄??????????0??2012-12-08?17:23??dallasTemperatureControl\examples\AlarmHandler

?????目錄??????????0??2012-12-08?17:23??dallasTemperatureControl\examples\Multiple

?????目錄??????????0??2012-12-08?17:23??dallasTemperatureControl\examples\Simple

?????目錄??????????0??2012-12-08?17:23??dallasTemperatureControl\examples\Single

?????目錄??????????0??2012-12-08?17:23??dallasTemperatureControl\examples\Tester

?????目錄??????????0??2012-12-08?17:23??dallasTemperatureControl\examples\WaitForConversion

?????目錄??????????0??2012-12-08?17:23??dallasTemperatureControl\examples\WaitForConversion2

?????目錄??????????0??2012-12-08?17:20??OneWire\examples\DS18x20_Temperature

?????目錄??????????0??2012-12-08?17:20??OneWire\examples\DS2408_Switch

?????目錄??????????0??2012-12-08?17:20??OneWire\examples\DS250x_PROM

............此處省略7個文件信息