我用I2C2，控制24C02读写，但是写操作要单片机复位两次才工作，请问有人知道为什么吗

牛一样的大叔 · 发表于 2018-1-22 16:55:59

void I2C_EEPROM_Byte_Write(uint8_t Write_Addr,uint8_t data)
{
uint16_t cf=0xFFFF;

// Start
I2C_GenerateSTART(I2Cx,ENABLE);
// wait EV5
while(I2C_GetFlagStatus(I2Cx, I2C_FLAG_SB) == ERROR)
{
}

// Send EEPROM Address
I2C_Send7bitAddress(I2Cx,EEPROM_Device_Addr,I2C_Direction_Transmitter);

// wait EV6
while(I2C_CheckEvent(I2Cx,I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED) != SUCCESS );
// Send Write_Addr
I2C_SendData(I2Cx,Write_Addr);

// wait EV8
while(I2C_CheckEvent(I2Cx,I2C_EVENT_MASTER_BYTE_TRANSMITTING) != SUCCESS );
// Send pBuffer
I2C_SendData(I2Cx,data);
// wait EV8-2
while(I2C_CheckEvent(I2Cx,I2C_EVENT_MASTER_BYTE_TRANSMITTED) != SUCCESS );

I2C_GenerateSTOP(I2Cx,ENABLE);
}

主函数：
int main(void)
{

//Ïμí3ê±ÖóòÑ¾-±»ÅäÖÃ3é72M
LED_GPIO_Config();

USART_Init_Config();

I2C_EEPROM_Init();
EEPROM_WaitForWriteEnd();

// EEPROM_WaitForWriteEnd();

I2C_EEPROM_Byte_Write(11,52);
EEPROM_WaitForWriteEnd();
I2C_EEPROM_Read(readData,11,1);
printf("readData=%d\n",readData[0]);
show_Message();
while(1)
{

}
}