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Observer
Observer
575 Views
Registered: ‎05-08-2018

--XADC— Value of external voltage doesnt change on Tera Term VT?

Now I configure XADC on Zynq-702 Evaluation Board to measure voltage (0->1 V) on VP_VN, Vaux_8 and Vaux0.

The problem is: When I see the value on Tera Term VT, the values of VP_VN, Vaux_8, and Vaux0 displaying the right value on there, don't change when changing the external voltage value. They only change when I reset the system or when I start Programing HW(.bit) and Launching SW (.elf) into Kit again. Any suggestion for me?

This is my HW: 

This is my SW (SDK):
(https://drive.google.com/open?id=1VArQmNLXqQDDoQZF1Ny5lntV-gWmNYbe)
This is my Tera Term VT (to see external voltage :    ) They dont change value when changing external voltage on VP_VN, Vaux_8, and Vaux0 .

 

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Moderator
Moderator
560 Views
Registered: ‎04-18-2011

If I were you I'd hook up an ILA to the CHANNEL_OUT and EOC/EOS as well as BUSY. 

These will tell you that the XADC is definitely converting and making it's way throught the channels in the sequencer. 

Another check to do is open the XADC console in the HW manager. 

Add these channels to the plot. Are they changing?

 

Have you tried adding temperature and vccint to make sure they are working?

 

 

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