Re: [lwip-users] Recv UDP Problem

[Michael Steinberg]

Hi,

You were reporting the same software works on m4 but fails to work 
reliably on m7. The most prominent difference that can cause issues 
between m4 and m7 is that the latter has data caches, where the former 
has none. Possible situation: The dma writes a frame to cached memory, 
the mcu data cache is not invalidated, interrupt is raised, the isr 
which polls the dma descriptor chain reads from memory but gets a cache 
hit and reads outdated data.

Michael


Am 25.11.2016 um 14:34 schrieb mgirke:
> @Michael: What exactly do you mean?
>
> no so far I am using two netconns, one for each task. but good to know
> 2.0.0. offers that.
>
> thanks!
>
>
>
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