ZYNQ AP transaction error, DAP status f0000021

[Mukul 0]

I'm using zybo 7z010clg400 board with vivado 2018.2 and having the same error...

Couldn't find the solution yet.

[jpeyron 657]

Hi @Mukul,

Are you getting the Error while launching program: Memory write error at 0x100000. APB AP transaction error, DAP status f0000021? 

1. Make sure the boot mode jumper JP5 is set to JTAG.

If your Mode setting are JTAG and you are still having an issue then please attach a screen shot of your SDK errors?

thank you,

Jon

[Mukul 0]

Hey jpeyron

Yes my boot mode jumper is set to JTAG and I'm following the "getting started with zybo" site, still facing the error.

I think the core selection is the issue but as i say i did exactly same as the site.https://reference.digilentinc.com/learn/programmable-logic/tutorials/zybo-getting-started-with-zynq/start

I attached all screen shot related to the error 

 

 

[jpeyron 657]

Hi @Mukul,

1) Please attach a screen shot of your Vivado block design.

2) Are you using the Digilent board files?

3) why is there a verilog_HW_platform in your Project explore tab of the SDK?

cheers,

Jon

[Mukul 0]

  Hi  jpeyron

Yes im using Digilent board files.

https://reference.digilentinc.com/learn/programmable-logic/tutorials/zybo-getting-started-with-zynq/start

[jpeyron 657]

Hi @Mukul,

I would suggest to start fresh and delete the .sdk folder.

1) Then re-export the hardware including the bitstream and launch sdk.

2) Then create an application and add the SDK code in the tutorial. 

thank you,

Jon

[Mukul 0]

I did so but getting the same error every time

[jpeyron 657]

Hi @Mukul,

Here is a completed and verified Zybo-Z7-10 Getting started with Zynq project done in Vivado 2018.2. 

1) Please download and run this project.  Does this project work for you?

When you started you project did you select the zybo z7-10 board file as shown below.

thank you,

Jon

[Mukul 0]

Hi @jpeyron

I'm getting the same error again with your file.

My fpga is programmed but when i press the button/switch, led didn't glow.

And when i relaunch it, i get the "DAP status f0000021" error.

[Mukul 0]

Hi @jpeyron

Probably this might be the error.

Do visit the link https://forums.xilinx.com/t5/Embedded-Processor-System-Design/How-to-prevent-sleep-timer-from-being-set-to-axitimer/td-p/869998

[jpeyron 657]

Hi @Mukul,

I split your thread to a new post so we are not posting as well as notifying followers on an old thread. 

1) I believe is see the issue. You are using the original retired Zybo.  In this case select Zybo instead of Zybo Z7-10 for the board files. The Zybo and the Zybo-Z7 have the same zynq chip but they have different components and configurations. Please make sure you are using the correct Zybo board file as shown below. 

2) My project linked above is for the Zybo-Z7-10 so would not work for the original Zybo.

 

 

thank you,

Jon

[jpeyron 657]

Hi @Mukul,

Here is a completed and verified GSWZ Zybo demo done in Vivado 2018.2. Please let my know if you were able to get this project working as expected.

thank you,

Jon

[Mukul 0]

Hey @jpeyron

Yes selecting the correct board file is the issue here.

Now project work as expected.

Thanks for your support Jon.

[jpeyron 657]

Hi @Mukul,

Glad to hear the board is working correctly! Thank you for sharing what the issue was.

cheers,

Jon