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Voyager
Voyager
767 Views
Registered: ‎05-14-2017

no signals in HW_ila waveform logic analyzer

I programmed the Kintex FPGA within Vivado 2017 and got a blank screen in my Waveform HW_ila window.

This continue to occur even after I supply the LTX probe file to the FPGA. There seem to be no signal to add.

I check the supplied LTX file and that looks OK

 

This is the first time I use 4 different HW_ila because I have 4 different clock.

What am I missing?

 

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5 Replies
Moderator
Moderator
706 Views
Registered: ‎09-15-2016

Re: no signals in HW_ila waveform logic analyzer

Hi @tchin123,

 

Can you please check the following:

 

1. The clock connected to ILA should have the frequency atleast twice greater than the JTAG frequency.
2. The clock connected to ILA should have frequency atleast twice greater than the signal being probed.


Please try reducing the JTAG frequency and check if it helps. You may refer the below user guide page#35,36:

https://www.xilinx.com/support/documentation/sw_manuals/xilinx2018_2/ug908-vivado-programming-debugging.pdf

 

If the above does not help then can you please share the screenshot of the hardware manager window and the ltx file. Also, can you please let us know the frequencies that your using.

 

Thanks & Regards,
Sravanthi B
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Voyager
Voyager
693 Views
Registered: ‎05-14-2017

Re: no signals in HW_ila waveform logic analyzer

How do I determine the JTAG frequency?

Because I have this command within the constraint file

 

set_property BITSTREAM.CONFIG.EXTMASTERCCLK_EN div-1 [current_design]

 

and my external clock is 50 Mhz, then does 50 Mhz represent the JTAG frequency?

I think this is true if I boot from FLASH memory.

But what if I programmed it with a bit file then through JTAG then what would this frequency be?

 

 

 

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Moderator
Moderator
682 Views
Registered: ‎09-15-2016

Re: no signals in HW_ila waveform logic analyzer

Hi @tchin123,

 

You can determine the JTAG frequency from the hardware manager while opening and connecting to a hardware target. 

 

jtag.JPG

 

Please refer the above mentioned UG908 page#24 to 28.

Thanks & Regards,
Sravanthi B
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Voyager
Voyager
641 Views
Registered: ‎05-14-2017

Re: no signals in HW_ila waveform logic analyzer

That menu shows up as you establish the connection, but If I have my connection to the FPGA already established then how would I determine my JTAG frequency.

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Voyager
Voyager
640 Views
Registered: ‎05-14-2017

Re: no signals in HW_ila waveform logic analyzer

I usually do auto connect and this menu doesn't show it
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