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Not possible to have minor states in GPIF state machine when using DMA signals?
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RSKV

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Not possible to have minor states in GPIF state machine when using DMA signals?

Sil posted on 27 Jul 2012 2:00 AM PST
Top Contributor
93 Forum Posts

In my GPIF state machine I have a state with four outgoing transitions, which means it will be converted into minor states. Therefore I took care that it is possible to convert the transition conditions into minor states. It is working fine as long as I am using I/O signals and COUNTER_HIT for state transitions. If I replace a certain I/O signal with DMA_RDY_TH1, the GPIF designer is unable to compile the design. As I am just exchanging a variable with another one, the ability to create minor states should not change. So why does it behave differently when using DMA_RDY_TH1?

 

-Silvio

Re: Not possible to have minor states in GPIF state machine when using DMA signals?

RSKV posted on 01 Aug 2012 12:17 AM PST
Cypress Employee
655 Forum Posts

What is the error that you are getting?. You can look for errors in the "Notice list" that is available on the GPIF design.

Re: Not possible to have minor states in GPIF state machine when using DMA signals?

Sil posted on 01 Aug 2012 09:00 AM PST
Top Contributor
93 Forum Posts

I opened a case in the meantime and learned that there are additional restrictions that apply to mirror states regarding the transition conditions. E.g. I used the DMA_RDY and COUNTER_HIT signal in a mirror state, which caused the problem. Now I have to solve my problem differently.



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