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    i see. can't you try with a teensy LC ? i've...

    i see. can't you try with a teensy LC ? i've never tried this but, as mentioned, in that case it should work: "The DAC reference can be selected to be VDDA or VREFH."
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    it's Paul's code ... i see. well, as...

    it's Paul's code ...




    i see. well, as noted above, my understanding is that's not the way it (MK20) works. you can set them independently by bypassing the code in analog.c, but "EXTERNAL"...
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    ps. reading more closely, I realize you weren't...

    ps. reading more closely, I realize you weren't all that much concerned about the DAC not tracking AREF. (sorry)

    to make things work independently, the workaround i suppose would be to edit...
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    Why, I'm pretty sure Paul knows more about it...

    Why, I'm pretty sure Paul knows more about it than I do. That said, the quote above is taken from the MK20 datasheet * ; on that basis it's not clear to me what the "non-documented reference" might...
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    Not sure I'd call that an error, VDDA *is* a...

    Not sure I'd call that an error, VDDA *is* a "supply" input; but yeah, that's somewhat confusing. AFAICS, that's the expected behaviour:

    ... but not VREFH ("AREF").

    Looking at the schematic,...
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