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TMS320F28035 ADC troubles

Other Parts Discussed in Thread: CONTROLSUITE

Hello.

I am going to use ADC in my dsp. So firstly I tryed example "adc_soc" from controlSUITE, but I get wrong values (connect some pins to the ground, or get same data). Next time I compile exaple from adc reference manual, where internal temperature sensor is been measured, but it gives wrong data again. I heat chip, but data is standing still.

Now I look for some exapmple that works. Does someone run into this situation too?

Thanks for advise.

  • Hi Denis,

    What HW are you using? Is this a TI supplied kit?

    You may want to check the VDDA voltage, and maybe the VREFHI voltage if the device is in external reference mode.

    For the adc_soc example, what voltage are you applying to which pin, and what are the conversion results?

    For the temp sensor example, what is the actual raw ADC output when sampling the temp sensor?