cfsterpka

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  1. Thanks @xc6lx45, Yes, I am aware of this. What's confusing to me is that when I attempt to use the DRP to select a single channel, several seem to all be active at at the same time.
  2. Hi again @jpeyron, So I'm still having weird issues with this board. I really need at least 3 active ADCs for my project, but at best I can only get 2 channels active (Vp/Vn and A0) without interference from other channels. Is there a mistake I'm making or is this board not working properly?
  3. Hi @jpeyron, So I've done a few more tests: 1) We have a second Arty z7-10, and I can confirm that the same behavior is happening with that board (all three differential channels seem to be active at the same time). 2) I ran the XADC demo on an Arty S7-50 and it behaved as expected, the switches would activate only one channel at a time. Could this be a bug with the XADC demo for the z7 or the channel sequencer? Additionally, I posted this question in Xilinx forums and got the suggestion of attaching the ila and looking at the output of the channels and eoc to see if there are any inconsistencies, so I am currently working on that.
  4. Thank you for your response jpeyron. I guess I'm a bit confused how to use the channel sequencer. When I use your code, it seems that the ADC responds to the differential channels Vp/Vn, A6/A7, and A8/A9 all simultaneously. What I am attempting to do is have one channel active (such as Vp/Vn), but then be able switch between Vp/Vn, A0 and A1 programmatically.
  5. Hi - I've been trying to implement a design based on the XADC demo for the Arty z7-10, but I've been having difficulty figuring out exactly how to properly switch between 3 channels (VP/VN, A0 and A1) when in DRP mode with the channel sequencer. I've attempted to use the switches to alternate channels as in the example design, though what I would ultimately like to do is poll each channel at a regular timed interval. Attached are my modifications to the example verilog source and XDC file, any help would be greatly appreciated. -Chris Artyz7_mod.xdc Artyz7_mod.v