关于I2C——EEPROM那一节的问题

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Spikess|

楼主 | 2020-4-25 09:56 | 只看该作者回帖奖励

|倒序浏览 |阅读模式

I2c, mdash, EEPROM, pi, IO

void IIC_EE_Config(void)
{
      GPIO_InitTypeDef GPIO_InitStructure;
      I2C_InitTypeDef       I2C_InitStructure;

      EEPROM_I2C_GPIO_APBxClkCmd(EEPROM_I2C_GPIO_CLK, ENABLE);
      EEPROM_I2C_APBxClkCmd(EEPROM_I2C_CLK,ENABLE);

      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
      GPIO_InitStructure.GPIO_Pin = EEPROM_I2C_SDA_GPIO_PIN;
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
      GPIO_Init(EEPROM_I2C_SDA_GPIO_PORT, &GPIO_InitStructure);

      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
      GPIO_InitStructure.GPIO_Pin = EEPROM_I2C_SCL_GPIO_PIN;
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
      GPIO_Init(EEPROM_I2C_SCL_GPIO_PORT, &GPIO_InitStructure);

      I2C_InitStructure.I2C_Ack       = I2C_Ack_Enable;
      I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
      I2C_InitStructure.I2C_ClockSpeed = EEPROM_I2C_BAUDRATE;
      I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;
      I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
      I2C_InitStructure.I2C_OwnAddress1 = STM32_IIC_ADDR;
      I2C_Init(EEPROM_I2C, &I2C_InitStructure);

      I2C_Cmd(EEPROM_I2C,ENABLE);
}

void EEPROM_Write_Byte(uint8_t Addr,uint8_t Date)
{
      I2C_GenerateSTART(EEPROM_I2C,ENABLE);
      while(!I2C_CheckEvent(EEPROM_I2C, I2C_EVENT_MASTER_MODE_SELECT));

      I2C_Send7bitAddress(EEPROM_I2C,EEPROM_ADDR,I2C_Direction_Transmitter);
      while(I2C_CheckEvent(EEPROM_I2C,I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED) == ERROR);

      I2C_SendData(EEPROM_I2C,Addr);
      while(I2C_CheckEvent(EEPROM_I2C,I2C_EVENT_MASTER_BYTE_TRANSMITTING) == ERROR);

      I2C_SendData(EEPROM_I2C,Date);
      while(I2C_CheckEvent(EEPROM_I2C,I2C_EVENT_MASTER_BYTE_TRANSMITTING) == ERROR);

      I2C_GenerateSTOP(EEPROM_I2C,ENABLE);
}
上面那些宏定义我查了几遍没查出问题。
但程序死在这个while这里，也就是说发送启动信号不成功。
I2C_GenerateSTART(EEPROM_I2C,ENABLE);
while(!I2C_CheckEvent(EEPROM_I2C, I2C_EVENT_MASTER_MODE_SELECT));

求指导

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