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Participant mojtaba.ahmadi
Participant
1,074 Views
Registered: ‎05-20-2018

zynq board, AHB AP transaction and JTAG connection error

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I'm new at zynq board. I am trying to work with XADC of zynq-xc7z020 and want to see its quality for my application through vivado and xilinx SDK.

I tested two ways of designing through lab3 and lab4 tutorials. Synthesis, implementation and generating bitstream in vivado are OK. in xilinx SDK, after programming the board, when I run a simple printf through system debugger or GDB but I get "AHB AP transaction Error". I googled it a lot and spent few days for it, but didn't get any solution. Additional, I tried to connect to the arm core of the board through XMD console by "connect arm hw" command. but console get JTAG connection error, while JTAG cable is connected and programming of the board is done.

suggested solutions of here didn't help.

thank you.

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Participant mojtaba.ahmadi
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1,128 Views
Registered: ‎05-20-2018

Re: zynq board, AHB AP transaction and JTAG connection error

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the problem was from DDR configurations. I got it by "mrd" command in SDK.

it solved by doing "run automation block" after adding zynq processor to design.

View solution in original post

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Moderator
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Registered: ‎10-06-2016

Re: zynq board, AHB AP transaction and JTAG connection error

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Hi @mojtaba.ahmadi,

The "AHB AP transaction Error" is just pointing an error in a AXI transaction so it might be driven by any kind of AXI transaction which means that theare are a lot of actions that might end on this kind of issues :)

Taking a look to your lab files I'm wondering if you programmed the FPGA before running the application. This is quite a common case for this kind of erros, as if you don't have the bitstream programmend and you try to access to the IP from the processor there is no AXI slave to answer to the transaction.

If it is not your case, you might try to debug the code and find the exact function which is generating the error.

Regards
Ibai

Ibai
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Participant mojtaba.ahmadi
Participant
1,129 Views
Registered: ‎05-20-2018

Re: zynq board, AHB AP transaction and JTAG connection error

Jump to solution

the problem was from DDR configurations. I got it by "mrd" command in SDK.

it solved by doing "run automation block" after adding zynq processor to design.

View solution in original post

0 Kudos