0101_APP/APP/storage/at24cxx.h

#ifndef __I2C_EE_H
#define __I2C_EE_H

/* STM32 I2C 快速模式 */
#define I2C_Speed 400000 //*

/* 这个地址只要与 STM32 外挂的 I2C 器件地址不一样即可 */
#define I2Cx_OWN_ADDRESS7 0X0A

/* AT24C01/02 每页有 8 个字节 */
//#define I2C_PageSize 8

/* AT24C04/08A/16A每页有16个字节 */
#define I2C_PageSize           16         

/* 这个地址只要与STM32外挂的I2C器件地址不一样即可 */
#define I2C_OWN_ADDRESS7      0X0A   

/*I2C接口*/
#define EEPROM_I2C                          I2C2
#define EEPROM_I2C_CLK                      RCC_APB1Periph_I2C2
#define EEPROM_I2C_CLK_INIT                 RCC_APB1PeriphClockCmd

#define EEPROM_I2C_SCL_PIN                  GPIO_Pin_10                 
#define EEPROM_I2C_SCL_GPIO_PORT            GPIOB                       
#define EEPROM_I2C_SCL_GPIO_CLK             RCC_APB2Periph_GPIOB
#define EEPROM_I2C_SCL_SOURCE               GPIO_PinSource10

#define EEPROM_I2C_SDA_PIN                  GPIO_Pin_11                  
#define EEPROM_I2C_SDA_GPIO_PORT            GPIOB                       
#define EEPROM_I2C_SDA_GPIO_CLK             RCC_APB2Periph_GPIOB
#define EEPROM_I2C_SDA_SOURCE               GPIO_PinSource11

/*等待超出时间*/
#define I2CT_FLAG_TIMEOUT         ((uint32_t)0x1000)
#define I2CT_LONG_TIMEOUT         ((uint32_t)(10 * I2CT_FLAG_TIMEOUT))

/*信息输出*/
#define EEPROM_DEBUG_ON         0

extern int uart_msg_send(u8 uartid, const char *buf, u32 buflen);
#define EEPROM_INFO(fmt,arg...)           OTP_TRACE(fmt,##arg)//trace_otp_trace1(uart_msg_send, 4, fmt, ##arg);
//printf("<<-EEPROM-INFO->> "fmt"\n",##arg)
#define EEPROM_ERROR(fmt,arg...)          //printf("<<-EEPROM-ERROR->> "fmt"\n",##arg)
#define EEPROM_DEBUG(fmt,arg...)          /*do{\
	                                          if(EEPROM_DEBUG_ON)\
	                                          printf("<<-EEPROM-DEBUG->> [%d]"fmt"\n",__LINE__, ##arg);\
                                          }while(0)*/

/* 
 * AT24C02 2kb = 2048bit = 2048/8 B = 256 B
 * 32 pages of 8 bytes each
 *
 * Device Address
 * 1 0 1 0 A2 A1 A0 R/W
 * 1 0 1 0 0  0  0  0 = 0XA0
 * 1 0 1 0 0  0  0  1 = 0XA1 
 */

/* EEPROM Addresses defines */
#define EEPROM_Block0_ADDRESS 0xA0   /* E2 = 0 */
//#define EEPROM_Block1_ADDRESS 0xA2 /* E2 = 0 */
//#define EEPROM_Block2_ADDRESS 0xA4 /* E2 = 0 */
//#define EEPROM_Block3_ADDRESS 0xA6 /* E2 = 0 */



void I2C_EE_Init(void);
void I2C_EE_BufferWrite(u8* pBuffer, u8 WriteAddr, u16 NumByteToWrite);
uint32_t I2C_EE_ByteWrite(u8* pBuffer, u8 WriteAddr);
uint32_t I2C_EE_PageWrite(u8* pBuffer, u8 WriteAddr, u8 NumByteToWrite);
uint32_t I2C_EE_BufferRead(u8* pBuffer, u8 ReadAddr, u16 NumByteToRead);
void I2C_EE_WaitEepromStandbyState(void);

#endif /* __I2C_EE_H */