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c6748 编译出问题#10010 errors encountered during linking、unresolved symbol



在main.c中调用我自己编写的iic.c里的函数

void IICInit(void)
{
    //IIC 复位 / 禁用
    I2CMasterDisable(SOC_I2C_0_REGS);

    // 配置总线速度为 100KHz
    I2CMasterInitExpClk(SOC_I2C_0_REGS, 24000000, 8000000, 100000);

    // 设置从设备地址
    I2CMasterSlaveAddrSet(SOC_I2C_0_REGS, ADDRESS);

    // IIC 使能
    I2CMasterEnable(SOC_I2C_0_REGS);
}

出现这些问题,不调用时编译没这些错误,不知什么原因