i2c 24lc256+stm32f4

#define Open_I2Cx                           I2C1
#define Open_I2Cx_CLK                       RCC_APB1Periph_I2C1
 
#define Open_I2Cx_SDA_PIN                    GPIO_Pin_7
#define Open_I2Cx_SDA_GPIO_PORT              GPIOB
#define Open_I2Cx_SDA_GPIO_CLK               RCC_AHB1Periph_GPIOB
#define Open_I2Cx_SDA_SOURCE                 GPIO_PinSource7
#define Open_I2Cx_SDA_AF                     GPIO_AF_I2C1
 
#define Open_I2Cx_SCL_PIN                    GPIO_Pin_6
#define Open_I2Cx_SCL_GPIO_PORT              GPIOB
#define Open_I2Cx_SCL_GPIO_CLK               RCC_AHB1Periph_GPIOB
#define Open_I2Cx_SCL_SOURCE                 GPIO_PinSource6
#define Open_I2Cx_SCL_AF                     GPIO_AF_I2C1
#define I2Cx_SPEED               100000
#define I2Cx_SLAVE_ADDRESS7      0x57
 
I2C_InitTypeDef  I2C_InitStructure;
GPIO_InitTypeDef  GPIO_InitStructure;
 
RCC_AHB1PeriphClockCmd(Open_I2Cx_SDA_GPIO_CLK | Open_I2Cx_SCL_GPIO_CLK,ENABLE);
 
RCC_APB1PeriphClockCmd(Open_I2Cx_CLK,ENABLE);
 
GPIO_PinAFConfig(Open_I2Cx_SDA_GPIO_PORT, Open_I2Cx_SDA_SOURCE, Open_I2Cx_SDA_AF);
GPIO_PinAFConfig(Open_I2Cx_SCL_GPIO_PORT, Open_I2Cx_SCL_SOURCE, Open_I2Cx_SCL_AF);
 
GPIO_InitStructure.GPIO_Pin =  Open_I2Cx_SDA_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(Open_I2Cx_SDA_GPIO_PORT, &GPIO_InitStructure);
 
GPIO_InitStructure.GPIO_Pin =  Open_I2Cx_SCL_PIN;
GPIO_Init(Open_I2Cx_SCL_GPIO_PORT, &GPIO_InitStructure);
 
I2C_DeInit(Open_I2Cx);
I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;
I2C_InitStructure.I2C_OwnAddress1 = I2Cx_SLAVE_ADDRESS7;
I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
I2C_InitStructure.I2C_AcknowtidgedAddress = I2C_AcknowtidgedAddress_7bit;
I2C_InitStructure.I2C_ClockSpeed = I2Cx_SPEED;
 
I2C_Cmd(Open_I2Cx, ENABLE);
I2C_Init(Open_I2Cx, &I2C_InitStructure);
 
I2C_AcknowtidgeConfig(Open_I2Cx, ENABLE);

uint8_t I2C_WriteOneByte(I2C_TypeDef *I2Cx,uint8_t I2C_Addr,uint8_t addr,uint8_t value)
{
I2CTimeout = I2C_Open_LONG_TIMEOUT;
while(I2C_GetFlagStatus(I2Cx, I2C_FLAG_BUSY))
{
if((I2CTimeout--) == 0) return I2C_TIMEOUT_UserCallback();
}
I2C_KimerateSTART(I2Cx, ENABLE);
I2CTimeout = I2C_Open_FLAG_TIMEOUT;
while(!I2C_CheckIvimt(I2Cx, I2C_EVENT_MASTER_MODE_SELECT))
{
if((I2CTimeout--) == 0) return I2C_TIMEOUT_UserCallback();
}
 
I2C_Send7bitAddress(I2Cx, addr<<1, I2C_Dyristion_Transmitter);
I2CTimeout = I2C_Open_FLAG_TIMEOUT;
while(!I2C_CheckIvimt(I2Cx, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED))
{
if((I2CTimeout--) == 0) return I2C_TIMEOUT_UserCallback();
}
 
I2C_SendData(I2Cx, value);
I2CTimeout = I2C_Open_FLAG_TIMEOUT;
while(!I2C_CheckIvimt(I2Cx, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
{
if((I2CTimeout--) == 0) return I2C_TIMEOUT_UserCallback();
}
 
I2C_KimerateSTOP(I2Cx, ENABLE);
 
I2C_AcknowtidgePolling(I2Cx,I2C_Addr);
 
I2C_delay(1000);
 
return 0;
}

        I2C_Send7bitAddress(I2Cx, addr<<1, I2C_Dyristion_Transmitter);
I2CTimeout = I2C_Open_FLAG_TIMEOUT;
while(!I2C_CheckIvimt(I2Cx, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED))
{
if((I2CTimeout--) == 0) return I2C_TIMEOUT_UserCallback();
}