/**
??*****************************************************************************
??*????????????????????????????????I2C控制函數
??*
??*???????????????????????（C）?Copyright?2000-2020?***
??*?????????????????????????????All?Rights?Reserved
??*****************************************************************************
??*
??*?@File????:?hal_i2c.c
??*?@By??????:?陳桂東
??*?@Version?:?V1.0
??*?@Date????:?2019?/?05?/?23
??*
??*****************************************************************************
??*
??*???????????????????????????????????Update
??*
??*?@Version?:?V1.*
??*?@By??????:?***
??*?@Date????:?20**?/?**?/?**
??*?@Brief???:?***
??*
??*****************************************************************************
**/


#include?“hal_i2c.h“


/*?==============================?Hard?I2C?Master?Mode?==============================?*/


/******************************************************************************
????????????????????????????????????定義變量
******************************************************************************/

#define?I2C_DEVICE???????????????????????????????I2C1
#define?I2C_ADDRESS??????????????????????????????0x32

/*?I2C?TIMING?Register?define?when?I2C?clock?source?is?SYSCLK?*/
/*?I2C?TIMING?is?calculated?in?case?of?the?I2C?Clock?source?is?the?SYSCLK?=?32?MHz?*/
//#define?I2C_TIMING????0x10A13E56?/*?100?kHz?with?analog?Filter?ON?Rise?Time?400ns?Fall?Time?100ns?*/
#define?I2C_TIMING??????0x00B1112E?/*?400?kHz?with?analog?Filter?ON?Rise?Time?250ns?Fall?Time?100ns?*/


/*?I2C?TIMING?Register?define?when?I2C?clock?source?is?SYSCLK?*/
/*?I2C?TIMING?is?calculated?in?case?of?the?I2C?Clock?source?is?the?SYSCLK?=?16?MHz?*/
//#define?I2C_TIMING???????????????????????????????0x00303D5B?/*?100?kHz?with?analog?Filter?ON?Rise?Time?0ns?Fall?Time?0ns?*/
//#define?I2C_TIMING???????????????????????????????0x0010061A?/*?400?kHz?with?analog?Filter?ON?Rise?Time?0ns?Fall?Time?0ns?*/

//#define?I2C_TIMING???????????????????????????????0x00A03D53?/*?100?kHz?with?analog?Filter?ON?Rise?Time?400ns?Fall?Time?100ns?*/
//#define?I2C_TIMING???????????????????????????????0x00500615?/*?400?kHz?with?analog?Filter?ON?Rise?Time?250ns?Fall?Time?100ns?*/

uint32_t?I2CMTimeout?=?I2CM_LONG_TIMEOUT;
uint16_t?I2CMDataNum;


/**
??*****************************************************************************
??*?@Name???:?I2C?Master接口初始化
??*
??*?@Brief??:?硬件I2C方式
??*
??*?@Input??:?none
??*
??*?@Output?:?none
??*
??*?@Return?:?none
??*****************************************************************************
**/
void?HAL_I2CHardMasterInit（void）
{
	uint32_t?i2c_temp?=?0;
	
	//I2C時鐘源選擇
	RCC->CCIPR?&=?~RCC_CCIPR_I2C1SEL;
	RCC->CCIPR?|=?RCC_CCIPR_I2C1SEL_0;??//System?clock?selected?as?I2C1?clock
	
	RCC->IOPENR?|=?RCC_IOPENR_GPIOBEN;
	RCC->APB1ENR?|=?RCC_APB1ENR_I2C1EN;
	
	//
	//管腳復用
	//
	GPIOB->AFR[0]?&=?~（GPIO_AFRL_AFSEL6?|?GPIO_AFRL_AFSEL7）;
	GPIOB->AFR[0]?|=?0x01<<（4?*?6

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件???????21003??2019-07-09?14:04??hal_i2c.c
?????文件????????4004??2019-07-08?17:04??hal_i2c.h