DP83640 通过GPIO输出周期信号失败

通过GPIO输出秒脉冲信号，一直失败，麻烦各位大侠看下原因，下面是代码

//=====================================================================
//======                                                         ======
//======        原型: uint8 DP83640_SetPPS(void)                 ======
//======                                                         ======
//======        功能：DP83640配置输出秒脉冲                       ======
//======                                                         ======
//=====================================================================
uint8 DP83640_SetPPS(void)
{
    uint32 value0 = 0;
    
    //-----------------------------------------------------------------
    //-----  1、关闭TRIGGER
    
    //-----  1.1 设置页地址
    DP83640_SetPage(PAGE4);
    
    //-----  1.2 读取配置寄存器
    HAL_ETH_ReadPHYRegister(&EthHandle, PTP_CTL, &value0);
    
    //-----  1.3 写地址,关闭TRIGGER
    value0 |= PTP_TRIG_DIS;
    
    HAL_ETH_WritePHYRegister(&EthHandle, PTP_CTL, value0);
    
    //-----------------------------------------------------------------    
    //-----  2、配置TRIGGER
    DP83640_SetPage(PAGE5);
    
    HAL_ETH_ReadPHYRegister(&EthHandle, PTP_TRIG, &value0);
    
    //-----  2.1 选择IO 、源、写、周期信号
    value0 |= (TRIG_GPIO4 + TRIG_CSEL0 + TRIG_WR + TRIG_PER);
    
    HAL_ETH_WritePHYRegister(&EthHandle, PTP_TRIG, value0);
    
    HAL_ETH_ReadPHYRegister(&EthHandle, PTP_TRIG, &value0);
    
    //-----------------------------------------------------------------    
    //-----  3、使能TRIGGER
    //-----  3.1 设置页地址
    DP83640_SetPage(PAGE4);
    
    //-----  3.2 读取配置寄存器
    HAL_ETH_ReadPHYRegister(&EthHandle, PTP_CTL, &value0);
    
    //-----  3.3 写地址,使能TRIGGER
    value0 |= (PTP_TRIG_EN + PTP_TRIG_SEL0);
    
    HAL_ETH_WritePHYRegister(&EthHandle, PTP_CTL, value0);
    
    HAL_ETH_ReadPHYRegister(&EthHandle, PTP_CTL, &value0);
    
    
    HAL_ETH_ReadPHYRegister(&EthHandle, PTP_TSTS, &value0);
    HAL_ETH_ReadPHYRegister(&EthHandle, PTP_TSTS, &value0);

    HAL_ETH_ReadPHYRegister(&EthHandle, PTP_TRIG, &value0);
    
}

Hi,

你把TRIG_PULSE位设置一下试试：