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TMS570 ADC Magnitude Threshold Interrupts

Fumin Li
Intellectual 510 points

Hi,

I'm a beginner of TMS570, and developing on this platform now. After reading PDF file "TMS570LS Series Microcontroller Technical Reference Manual (TRM), Literature Number: SPNU489, March 2010", i have this question:

About ADC Magnitude Threshold Interrupts (In PDF section 15.5.4 ADC Magnitude Threshold Interrupts),i don't know what does this kind of interrupt mean? when this kind interrupt will be used? And how to use?

could you please give a detailed example to explain his usage.  Thanks a lot.

  • 0
    TI__Genius 13810 points

    For example:

    If you are measuring the motor DC current using this ADC and the current consumption should be less than 2A (which transfer to the ADC voltage 3000LSB), this ADC magnitude threshold interrupt can be used to monitor this ADC channel. Once the magnitude of a certain channel is greater than 3000LSB (or other value), it will trigger a interrupt.

    In such a case, the CPU does not need to compare the ADC value with the limit; the ADC handles all the work.

    Regards,

    Haixiao