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ADS124S08: Read internal temp. sensor and AVDD value by SPI

Michael Jeong1
Expert 2610 points
Part Number: ADS124S08

Hello Expert,

Our customer is evaluatiing and debugging.

We want to read the values for the internal temperature sensor measurement and (AVDD – AVSS) / 4 measurement  of SYS_MON[2:0] respectively.

If there is a reference source code or command list or guide document for reading the corresponding value through the SPI Interface, please send it.

Best Regards,

Michael

  • 0
    TI__Guru** 113765 points

    Hi Michael,

    There is example 'C' code for this device on the ADS124S08 product landing page.  This code is generic, but shows the proper flow for reading/writing the registers and reading conversion data.

    As to the procedure, you have almost summarized the procedure within the question.  Basically all you do is write to the SYS register (09h) to change the value of the SYS_MON bits to the desired mode of measurement.  The system monitor configuration is explained in the datasheet within section 9.3.9 on page 52.  Once the register is written to the function/mode desired:

    • Start a conversion 
    • Wait for the conversion to complete
    • Read the conversion result

    Best regards,

    Bob B