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F28069 internal temp sensor

Jerry Nettleton
Intellectual 350 points


I'm using the F28069 controlStick and I keep getting an 'illegal operation trap' when I call the "GetTemperatureC()" function in the TempSensorConv example.

What do I need to do to get this code to work (e.g. read the TempSlope and TempOffset values)?

  • 0
    TI__Genius 16471 points

    Jerry- is your silicon TMX?  If so, your device may not have temperature sensor factory trim information.

    Since you are inquiring about the temp sensor, I'd like to also point out that TI only provides typical slope and offset in the datasheet and does not guarantee temperature accuracy even on TMS material.  While a general temp reading can be obtained using the provided functions, the main purpose of the temp sensor is used to compensate the internal oscillators over temperature.  I only point it out because some customers have had unrealistic expectations about the accuracy only to find out late in system development it doesn't meet their requirements.