Got CRITICAL WARNING following the tutorial: Zynq-7000 AP SoC Concepts, Tools, and Techniques

Hello,

I followed the instructions in Chapter 3 in the tutorial
"ZedBoard: Zynq-7000 AP SoC Concepts, Tools, and Techniques
A Hands-On Guide to Effective Embedded System Design
ZedBoard (Vivado 2013.2)"

I'm using Vivado 2014.1 instead of 2013.2.

My design looks similar to the one in Figure 3-3: Completed Port Connections, but I get critical warnings when I try to validate the desing:
e.g.:
CRITICAL WARNING: [BD 41-1348] Reset pin /axi_gpio_0/s_axi_aresetn (associated clock /axi_gpio_0/s_axi_aclk) is connected to asynchronous reset source /processing_system7_0/FCLK_RESET0_N.
This may prevent design from meeting timing. Please add proc_sys_reset module to create a reset, that is synchronous to the associated clock source /processing_system7_0/FCLK_CLK0.

You can find my design here:
https://dl.dropboxusercontent.com/u/15987625/myDesign.jpg

Does anyone have an idea, why it doesn't work for me?

Regards,
Yaro

0 Former Member over 11 years ago

There are often changes in how the Xilinx tools work from version to version. In Vivado 2014.1 an option to allow the tool to make some of the connections for you has been added. It section 3.3.1 of the tutorial, after step 11 on page 34, try clicking on the 'Run Connection Automation' button that should be near the top of the system diagram and select the axi peripheral you have added. This should make some of the connections you were instructed make later in the design as well as adding the sys_reset block your warning is complaining about. Then make any remaining connections needed and continue from there.

There will be updated tutorials available soon.

-Gary
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0 Former Member over 11 years ago

Thank you! That works!
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0 Former Member over 11 years ago

Hey

I got exactly same critical warnings, when customizing a simple calculator. No "Run Connection Automation" button show up and I have no idea what to do to eliminate the warnings.
The vivado messages says adding proc_sys_reset module may help but I don't know how to use it
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0 Former Member over 11 years ago in reply to Former Member

If you are using Vivado 2014.x and you do stop after completing step 11 on page 34 you should get the "Run Connection Automation" button at the top of the block diagram window. If you had already proceeded past this point in the tutorial you may need to start over.

-Gary
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0 Former Member over 11 years ago

Deleting one of the AXI interface connections brings up the "Run Connection Automation" button again.
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