#include?“Mlx90614.h“
#include?“Systick.h“
/*?Private?typedef?-----------------------------------------------------------*/
/*?Private?define?------------------------------------------------------------*/
#define?ACK?????????0
#define????????NACK?1
#define?SA????????????????????????????????0x00?//Slave?address???MLX90614????0x00????????0x5a
#define?RAM_ACCESS????????????????0x00?//RAM?access?command
#define?EEPROM_ACCESS????????0x20?//EEPROM?access?command
#define?RAM_TOBJ1????????????????0x07?//To1?address?in?the?eeprom

#define?SMBUS_PORT????????????GPIOB
#define?SMBUS_SCK?????????????GPIO_Pin_4
#define?SMBUS_SDA?????????????GPIO_Pin_3

#define?RCC_AHB1Periph_SMBUS_PORT????????????RCC_AHB1Periph_GPIOB

#define?SMBUS_SCK_H（）????????????SMBUS_PORT->BSRRL?=?SMBUS_SCK
#define?SMBUS_SCK_L（）????????????SMBUS_PORT->BSRRH?=?SMBUS_SCK
#define?SMBUS_SDA_H（）????????????SMBUS_PORT->BSRRL?=?SMBUS_SDA
#define?SMBUS_SDA_L（）????????????SMBUS_PORT->BSRRH?=?SMBUS_SDA

#define?SMBUS_SDA_PIN（）????????????SMBUS_PORT->IDR?&?SMBUS_SDA?

/*?Private?macro?-------------------------------------------------------------*/
/*?Private?variables?---------------------------------------------------------*/

/*******************************************************************************
*?Function?Name??:?SMBus_StartBit
*?Description????:?Generate?START?condition?on?SMBus
*?Input??????????:?None
*?Output?????????:?None
*?Return?????????:?None
*******************************************************************************/
void?SMBus_StartBit（void）
{
????SMBus_SDA_OUTMode（）;
		Delay_us（2）;

		SMBUS_SDA_H（）;????????????????//?Set?SDA?line
????SMBus_Delay（1）;????????????//?Wait?a?few?microseconds
????SMBUS_SCK_H（）;????????????????//?Set?SCL?line
????SMBus_Delay（5）;????????????//?Generate?bus?free?time?between?Stop
????SMBUS_SDA_L（）;????????????????//?Clear?SDA?line
????SMBus_Delay（10）;????????????//?Hold?time?after?（Repeated）?Start
????//?Condition.?After?this?period?the?first?clock?is?generated.
????//（Thd:sta=4.0us?min）
????SMBUS_SCK_L（）;????????????//?Clear?SCL?line
????SMBus_Delay（2）;????????????//?Wait?a?few?microseconds
}

/*******************************************************************************
*?Function?Name??:?SMBus_StopBit
*?Description????:?Generate?STOP?condition?on?SMBus
*?Input??????????:?None
*?Output?????????:?None
*?Return?????????:?None
*******************************************************************************/
void?SMBus_StopBit（void）
{
????SMBus_SDA_OUTMode（）;
		Delay_us（2）;
	
		SMBUS_SCK_L（）;????????????????//?Clear?SCL?line
????SMBus_Delay（5）;????????????//?Wait?a?few?microseconds
????SMBUS_SDA_L（）;????????????????//?Clear?SDA?line
????SMBus_Delay（5）;????????????//?Wait?a?few?microseconds
????SMBUS_SCK_H（）;????????????????//?Set?SCL?line
????SMBus_Delay（5）;????????????//?Stop?condition?setup?time（Tsu:sto=4.0us?min）
????SMBUS_SDA_H（）;????????????????//?Set?SDA?line
}

/*****