[Tinyos Core WG] Re: [Tinyos-devel] Re: I2C and SPI sharing

[Philip Levis]

On Oct 27, 2006, at 12:11 PM, Vlado Handziski wrote:

>
> Yes, there is a race there that needs to be fixed. However, I  
> personally think that clients should not rely on the previous owner  
> properly unconfiguring the resource for proper operation. The  
> configurations after granted should be self contained. That is why  
> I was opposed to the changes Jonathan did in his last commit where  
> the USART is reset in the unconfigure calls, making the success of  
> SetModeXXX depend on the previous unconfigure call.
>
> I guess, I am having second thoughts about the need of  
> "unconfigure" in general. Assuming that the resource  
> unconfiguration to a safe, low-power consuming state is memory-less  
> (not depending on the way it was configured by the current owner),  
> such an unconfigure can be done in the configuration step of the  
> ResourceController. Do we have examples in the current code base  
> for which this is not true?
>

Vlado,

TEP 108 went into last call in the WG on 9/6, and was sent to the SC  
48 hours after the meeting on that day. There were some significant  
changes, based on discussion on 8/30. Records indicate you were  
present at the 9/6 but not 8/30 meeting.

It sounds like these are good comments to give Matt.

Phil