#ifndef???__HMC5883_C_
#define???__HMC5883_C_

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


#include?“stm32f10x.h“

#include?“HMC5883.h“



uint8_t?BUF[7];


/*?Private?functions?---------------------------------------------------------*/

/**
??*?@brief??Configure?the?used?I/O?ports?pin
??*?@param??None
??*?@retval?None
??*/
void?I2C_GPIO_Config_HMC5883（void）
{
	??GPIO_InitTypeDef??GPIO_InitStructure;?

		RCC_APB2PeriphClockCmd（RCC_APB2Periph_GPIOB?ENABLE）;

	??//?Configure?I2C??pins:?SCL?and?SDA
	??GPIO_InitStructure.GPIO_Pin?=??I2C_HMC5883_SCL?|?I2C_HMC5883_SDA;?
	??GPIO_InitStructure.GPIO_Speed?=?GPIO_Speed_50MHz;
	??GPIO_InitStructure.GPIO_Mode?=?GPIO_Mode_Out_OD;
	??GPIO_Init（I2C_HMC5883_GPIO?&GPIO_InitStructure）;
}

void?HMC5883_Start（void）
{
		SDAH;
		SCLH;
????SysTimDelay1uS（SampleDelayCnt）;??????????
????SDAL;????????????????
????SysTimDelay1uS（SampleDelayCnt）;???????
		SCLL;??
		
}

void?HMC5883_Stop（void）
{
		SDAL;
		SCLH;
????SysTimDelay1uS（SampleDelayCnt）;?????????????
????SDAH;
????SysTimDelay1uS（SampleDelayCnt）;???????????
}

void?HMC5883_SendACK（u8?ack）
{
		if（ack）
		SDAL;	
		else
		SDAH;	
????SCLH;???????????????
????SysTimDelay1uS（SampleDelayCnt）;??????????
????SCLL;????????????????
????SysTimDelay1uS（SampleDelayCnt）;???????????
}

u8?HMC5883_RecvACK（void）
{
???u8?CY;
	?
????SCLH;
????SysTimDelay1uS（SampleDelayCnt）;???????????????
????CY=?Read_SDA;????????????
????SCLL;??????????????????
????SysTimDelay1uS（SampleDelayCnt）;???????

????return?CY;
}
void?HMC5883_SendByte（BYTE?dat）
{
????BYTE?i;

????for?（i=0;?i<8;?i++）????
????{
			??if（dat>=0x80）
					SDAH;
				else
					SDAL;
????????dat?<<=?1;????????
????????SCLH;??????????
????????SysTimDelay1uS（SampleDelayCnt）;???
????????SCLL;??????????
????????SysTimDelay1uS（SampleDelayCnt）;?????
????}
????HMC5883_RecvACK（）;
}

BYTE?HMC5883_RecvByte（void）
{
????BYTE?i;
????BYTE?dat?=?0;

????SDAH;??????????????????
????for?（i=0;?i<8;?i++）????
????{
????????dat?<<=?1;
????????SCLH;?????????????
????????SysTimDelay1uS（SampleDelayCnt）;??
????????dat?|=?Read_SDA;???
????????SCLL;?????????
????????SysTimDelay1uS（SampleDelayCnt）;????
????}
????return?dat;
}

//***************************************************

void?Single_Write_HMC5883（unsigned?char?REG_Addressunsigned?char?REG_data）
{
????HMC5883_Start（）;?????????????????
????HMC5883_SendByte（I2C_SLAVE_ADDRESS7）;??
????HMC5883_SendByte（REG_Address）;????
????HMC5883_SendByte（REG_data）;??????
????HMC5883_Stop（）;???
}
unsigned?char?Single_Read_HMC5883（unsigned?char?REG_Address）
{??
????unsigned?char?REG_data;
	?
????HMC5883_Start（）;???????????????????????
????HMC5883_SendByte（I2C_SLAVE_ADDRESS7）;??
????HMC5883_SendByte（REG_Address）;???????
????HMC5883_Start（）;????????????????
????HMC5883_SendByte（I2C_SLAVE_ADDRESS7+1）;?????
????REG_data=HMC5883_RecvByte（）;?
		HMC5883_SendACK（0）;?///?1???最后一個數(shù)據(jù)需要回NOACK
		HM