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ADS8638

fenqiang wang
Prodigy 60 points
Other Parts Discussed in Thread: ADS8638, ADS8634

咨询：

 我将ADS8638设置为自动模式，8个通道采集，但是读到的数据通道顺序是70123456，数据也是正确的，通道序号第一个不是应该是0通道的吗，各位知道是什么原因吗，谢谢

  • 0
    Guru 65885 points

    倾向于你操作的问题，上你的代码看看，应该是代码配置或者读取的问题。

  • 0 回复 xyz549040622
    Prodigy 60 points

    void Get_AUTO_RST_Mode_Data(U16* outputdata, U8 chnum)
    {
    U8 i=0,datal=0,datah=0;
    U16 data=0;

    for (i=0; i<8; i++)
    {
    ADS8638CS = 0;

    datah = SPI_ReadWriteByte(0X00);
    datal = SPI_ReadWriteByte(0X00);
    ADS8638CS = 1;

    data = datah<<8 | datal; //高位在前，低位在后
    *(outputdata+i) = data;
    }
    for (i=8; i<chnum; i++)
    {
    ADS8634CS = 0;

    datah = SPI_ReadWriteByte(0X00);
    datal = SPI_ReadWriteByte(0X00);
    ADS8634CS = 1;

    data = datah<<8 | datal; //高位在前，低位在后
    *(outputdata+i) = data;
    }
    }这是自动读取的代码

    void Set_CH_And_Range_Select(void) //设置通道和范围
    {
    ADS8638_Write_Program_Register(0x0C,0xFF);
    ADS8634_Write_Program_Register(0x0C,0xFF);


    ADS8638_Write_Program_Register(0x10,0x55);
    ADS8638_Write_Program_Register(0x11,0x55);
    ADS8638_Write_Program_Register(0x12,0x55);
    ADS8638_Write_Program_Register(0x13,0x55);
    ADS8634_Write_Program_Register(0x10,0x50);
    ADS8634_Write_Program_Register(0x11,0x50);
    ADS8634_Write_Program_Register(0x12,0x50);
    ADS8634_Write_Program_Register(0x13,0x50);
    }

    void AUTO_Mode(void) //进入自动扫描模式
    {

    ADS8638_Write_Program_Register(0x05,0x00);

    ADS8634_Write_Program_Register(0x05,0x00);
    }麻烦看看哪个地方存在问题