Hi,
Title kind of says it all.
I have a DAC that i set to a specifiy voltage on AIO[0]. Later on I do a ADC read on a different AIO pin(AIO[1]). I notice that the voltage from the DAC output goes to zero right after an ADC read. Setting up break points in the code showed me this. If i get rid of the ADC read the DAC output is always there and stable. But I need the ADC read. I can't figure out what is going on or is this how it works?
Thanks
Opinions expressed in the content posted here are the personal opinions of the original authors, and do not necessarily reflect those of Qualcomm Incorporated or its subsidiaries (“Qualcomm”). The content is provided for informational purposes only and is not meant to be an endorsement or representation by Qualcomm or any other party. This site may also provide links or references to non-Qualcomm sites and resources. Qualcomm makes no representations, warranties, or other commitments whatsoever about any non-Qualcomm sites or third-party resources that may be referenced, accessible from, or linked to this site.
There is no 3 AIO and no 3 DAC.
Only one unit that server all 3 AIO and no 3 DAC.
I do not know what CSR present that as defiant hardware units.
So any AIO read will rest all other AIO and DAC
Any ADC will do the same to other AIO and DAC
It's a kind of selector of one internal HD unit
Thanks for your input.
But there are three AIO pins 0, 1 ,2. Any of them pins can be used to set a DAC level or be used for an ADC input.
So your point really is its a crappy all in one ADC / DAC module . That ANY AIO that is used will reset the other AIO pins.
I wish they stated this in their spec. It's trial and error with them.