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Observer arslanmalik93
Observer
653 Views
Registered: ‎05-14-2018

Zynq Z0720 PCAP Readback

Hi,

I am trying to perfrom PL readback of Zedboard using PCAP but i am unable to find details regarding PCAP. I do not know the sewuence that i have to pass to xdev transfer function and no such details are provided in ug470. Can you please tell where can i find details on PCAP

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8 Replies
Xilinx Employee
Xilinx Employee
614 Views
Registered: ‎06-21-2018

Re: Zynq Z0720 PCAP Readback

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Observer arslanmalik93
Observer
603 Views
Registered: ‎05-14-2018

Re: Zynq Z0720 PCAP Readback

Yes i have read ug 585 in the readback section of pcap chapter 6 there is only a slight overview example which tells the steps to be perfomed during readback.

I have also seen the second post u have shared before that posts only deal with how to write bitstream in pl using ps

What i i  interested in reading back the pl bitstream using ps for verification amd comparison.

I was wondering if there was any pl readback example just as Xilinix provide pl write bitstream example in xdevcfg templates

 

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Visitor gochango
Visitor
583 Views
Registered: ‎06-12-2019

Re: Zynq Z0720 PCAP Readback

Is there any update to this issue?
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Xilinx Employee
Xilinx Employee
550 Views
Registered: ‎06-21-2018

Re: Zynq Z0720 PCAP Readback

Hi,
I would give it a try on the Embedded Config Forum as well:
https://forums.xilinx.com/t5/Embedded-Boot-and-Configuration/bd-p/EmbBoot
Thanks,
Andres
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Observer arslanmalik93
Observer
541 Views
Registered: ‎05-14-2018

Re: Zynq Z0720 PCAP Readback

I am attaching the code i am using to perform PCAP readback as per instruction in u470. The code is based on Xilinx reg readback example can you look and tell if i am doing anything wrong?

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Visitor gochango
Visitor
536 Views
Registered: ‎06-12-2019

Re: Zynq Z0720 PCAP Readback

Is this reading the actual PL bitstream thats already programmed? Or is it just reading the data being stored for the PL?

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Observer arslanmalik93
Observer
534 Views
Registered: ‎05-14-2018

Re: Zynq Z0720 PCAP Readback

I am trying to read pl bitstream that i have programmed before and then performing ps readback. During readback the pl is shutdown(i inow because my pl code, blinking led stops all leds  goes to floating) bitstream readback shows all zeros 

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Visitor ap_32076
Visitor
257 Views
Registered: ‎05-31-2019

Re: Zynq Z0720 PCAP Readback

Are there any updates to this? I am currently having the same issue with the output reading all 0s

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