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Visitor 145974
Visitor
4,942 Views
Registered: ‎08-15-2008

How to handle INOUT io signals in XPS and Microblaze?

Hi,

I am using Spartan-3E starter kit. In XPS, we try to add a user module asyncethcat2.vhd (including submodule user_logic.vhd) to the Microblaze .

We first exported a template asyncethcat2, made changes to asyncethcat2.vhd and user_logic.vhd, and then inported the asyncethcat2 to XPS.

In asyncethcat2.vhd and user_logic.vhd, we have INOUT signal et1100_data, a 16 bit bus IO to the board expension connector. When in generate netlist, the XPS itself created a wrapper asyncethcat2_0_wrapper.VHD. The asyncethcat2_0_wrapper.VHD changed my original design from et1100_data to et1100_data_I, et1100_data_O and et1100_data_T. Then XST says mismatch:

Thank You!
ERROR:Xst:2585 - Port <et1100_data_I>; of instance <asyncethcat2_0&gt; does not exist in definition <asyncethcat2>. Please compare the definition of block <asyncethcat2> to its component declaration to detect the mismatch.
ERROR:Xst:2585 - Port <et1100_data_O>; of instance <asyncethcat2_0&gt; does not exist in definition <asyncethcat2>. Please compare the definition of block <asyncethcat2> to its component declaration to detect the mismatch.
ERROR:Xst:2585 - Port <et1100_data_T>; of instance <asyncethcat2_0&gt; does not exist in definition <asyncethcat2>. Please compare the definition of block <asyncethcat2> to its component declaration to detect the mismatch.
ERROR:MDT - Aborting XST flow execution!
INFO:MDT - Refer to

Since the wrapper is auto generated by the tool, I tried to hand correct the file, it did not help. When rerun "generate netlist&quot;, the wrapper is updated by the tool again.

Can you help solve the issue?

Thanks,

Mike
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1 Reply
Xilinx Employee
Xilinx Employee
4,928 Views
Registered: ‎08-02-2007

Re: How to handle INOUT io signals in XPS and Microblaze?

Hello,

 

I think to create a MPD for a Bidirectional IO you can refer to GPIO MPD file and make sure that Input and Outputs are defined in a similar way.

 

And if i am not wrong, the file seems to be corrupted as the name of the wrapper is different <asyncethcat2_0&gt;>

 

You might want to cross check.

 

Regards,

Hem.

 

 

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