Proteus ISIS - Logic Contention(s) detected on net SCK

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HectorVerus

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Hello, sorry if this the post is not in the right thread, but I need some help as soon as possible ;-)

I barely use Proteus ISIS and I have poor knowledges on it, but there is an error that I am not able to fix and that's why I need your help.

Below, you can find the screenshot of my error and you can see the layout of the schema



Thanks for responding. :grin:
 
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Without knowing how the SCK pin address registers are configured in each microcontroller, it is difficult to say anything, but in short, there may be having conflict ( 2 active outputs simultaneously driving ).
 

Thanks, but I still don't know how to fix the problem :/
 

Me neither:

Without knowing how the SCK pin address registers are configured in each microcontroller, it is difficult to say anything
Click to expand...
 

Adding resistors between both SCK pins worked. Thanks for helping. ;-)
 

It is just a warning and can be ignored since you know that the slave, when configured, will change the SCK pin to an input to be driven by master. It is just a simulation and Proteus may not take that into account.
 

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