如题，CH438Q，读写数据时序问题，时钟无法使INI#拉低

读写寄存器代码如下：

UINT8 ReadCH438Data( UINT8 addr )
{
    u8 value;
    CH438_DATA_PORT->ODR = (CH438_DATA_PORT->ODR&0XFF00)|addr;
    CH438_ALE_HIGH;
    CH438_CS_LOW;
    CH438_ALE_HIGH;
    CH438_ALE_LOW;
    CH438_DataPin_IN();
    CH438_RD_LOW;
    CH438_RD_LOW;
    value = (uint8_t)CH438_DATA_PORT->IDR;
    CH438_RD_HIGH;
    CH438_ALE_HIGH;
    CH438_CS_HIGH;
    CH438_DataPin_OUT();
    return value;
}

void WriteCH438Data( UINT8 addr, UINT8 dat)
{
    CH438_DATA_PORT->ODR = (CH438_DATA_PORT->ODR&0XFF00) | addr; 
    CH438_ALE_HIGH;
    CH438_CS_LOW;
    CH438_ALE_HIGH;
    CH438_ALE_LOW;
    CH438_DATA_PORT->ODR = (CH438_DATA_PORT->ODR&0XFF00) | dat; //??????
    delay_us(1);
    CH438_WR_LOW;
    CH438_WR_HIGH;
    CH438_ALE_HIGH;
    CH438_CS_HIGH;
    CH438_DataPin_OUT();
}

您好，您可以发送邮件至mj@wch.cn。这边可以给您提供CH438  STM32单片机模拟并口的工程。