/*
HMC5883L.cpp?-?Class?file?for?the?HMC5883L?Triple?Axis?Magnetometer?Arduino?Library.
Copyright?（C）?2011?Love?Electronics?（loveelectronics.co.uk）

This?program?is?free?software:?you?can?redistribute?it?and/or?modify
it?under?the?terms?of?the?version?3?GNU?General?Public?License?as
published?by?the?Free?Software?Foundation.

This?program?is?distributed?in?the?hope?that?it?will?be?useful
but?WITHOUT?ANY?WARRANTY;?without?even?the?implied?warranty?of
MERCHANTABILITY?or?FITNESS?FOR?A?PARTICULAR?PURPOSE.??See?the
GNU?General?Public?License?for?more?details.

You?should?have?received?a?copy?of?the?GNU?General?Public?License
along?with?this?program.??If?not?see?.

?WARNING:?THE?HMC5883L?IS?NOT?IDENTICAL?TO?THE?HMC5883!
?Datasheet?for?HMC5883L:
?http://www51.honeywell.com/aero/common/documents/myaerospacecatalog-documents/Defense_Brochures-documents/HMC5883L_3-Axis_Digital_Compass_IC.pdf

*/

#include??
#include?“HMC5883L.h“

HMC5883L::HMC5883L（）
{
??m_Scale?=?1;
}

MagnetometerRaw?HMC5883L::ReadRawAxis（）
{
??uint8_t*?buffer?=?Read（DataRegisterBegin?6）;
??MagnetometerRaw?raw?=?MagnetometerRaw（）;
??raw.XAxis?=?（buffer[0]?<??raw.ZAxis?=?（buffer[2]?<??raw.YAxis?=?（buffer[4]?<??return?raw;
}

MagnetometerScaled?HMC5883L::ReadScaledAxis（）
{
??MagnetometerRaw?raw?=?ReadRawAxis（）;
??MagnetometerScaled?scaled?=?MagnetometerScaled（）;
??scaled.XAxis?=?raw.XAxis?*?m_Scale;
??scaled.ZAxis?=?raw.ZAxis?*?m_Scale;
??scaled.YAxis?=?raw.YAxis?*?m_Scale;
??return?scaled;
}

int?HMC5883L::SetScale（float?gauss）
{
	uint8_t?regValue?=?0x00;
	if（gauss?==?0.88）
	{
		regValue?=?0x00;
		m_Scale?=?0.73;
	}
	else?if（gauss?==?1.3）
	{
		regValue?=?0x01;
		m_Scale?=?0.92;
	}
	else?if（gauss?==?1.9）
	{
		regValue?=?0x02;
		m_Scale?=?1.22;
	}
	else?if（gauss?==?2.5）
	{
		regValue?=?0x03;
		m_Scale?=?1.52;
	}
	else?if（gauss?==?4.0）
	{
		regValue?=?0x04;
		m_Scale?=?2.27;
	}
	else?if（gauss?==?4.7）
	{
		regValue?=?0x05;
		m_Scale?=?2.56;
	}
	else?if（gauss?==?5.6）
	{
		regValue?=?0x06;
		m_Scale?=?3.03;
	}
	else?if（gauss?==?8.1）
	{
		regValue?=?0x07;
		m_Scale?=?4.35;
	}
	else
		return?ErrorCode_1_Num;
	
	//?Setting?is?in?the?top?3?bits?of?the?register.
	regValue?=?regValue?<	Write（ConfigurationRegisterB?regValue）;
}

int?HMC5883L::SetMeasurementMode（uint8_t?mode）
{
	Write（ModeRegister?mode）;
}

void?HMC5883L::Write（int?address?int?data）
{
??Wire.beginTransmission（HMC5883L_Address）;
??Wire.send（address）;
??Wire.send（data）;
??Wire.endTransmission（）;
}

uint8_t*?HMC5883L::Read（int?address?int?length）
{
??Wire.beginTransmission（HMC5883L_Address）;
??Wire.send（address）;
??Wire.endTransmission（）;
??
??Wire.beginTransmission（HMC5883L_Address）;
??Wire.requestFrom（HMC5883L_Address?length）;

??uint8_t?buffer[length];
??if（Wire.available（）?==?length）
??{
	??for（uint8_t?i

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

?????文件???????1032??2011-09-10?20:46??HMC5883L\HHMC5883L_Example_Ansifa\HHMC5883L_Example_Ansifa.pde

?????文件???????3259??2011-07-12?17:21??HMC5883L\HMC5883L.cpp

?????文件???????1999??2011-07-12?17:21??HMC5883L\HMC5883L.h

?????文件???????4217??2011-07-12?17:55??HMC5883L\HMC5883L_Example\HMC5883L_Example.pde

?????文件????????741??2011-07-12?16:11??HMC5883L\keywords.txt

?????目錄??????????0??2012-01-09?10:31??HMC5883L\HHMC5883L_Example_Ansifa

?????目錄??????????0??2012-01-09?10:31??HMC5883L\HMC5883L_Example

?????目錄??????????0??2012-01-09?10:31??HMC5883L

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

????????????????11248????????????????????8