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Re: [lwip-users] Problem running lwip on cortex M7 with D cache enabled


From: Jan Menzel
Subject: Re: [lwip-users] Problem running lwip on cortex M7 with D cache enabled
Date: Tue, 5 Dec 2017 00:16:55 +0100
User-agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0

On 30.11.2017 23:09, Jochen Strohbeck wrote:
> As already written in my previous posts I can place the buffer
> descriptors to non-cache memory. I checked the address in the debugger.
> But if I try to place 'memp_memory' (which seems to be the data buffer
> for the lwip pool and is used to hold the RX payload ?) to non-cache
> memory the address of the gs_gmac_dev struct is to my surprise in
> internal flash memory....
> 
Check your driver what buffer/memory is used for RX. Usually the driver
requests some buffer from LWIP memory to allow forwarding it after RX.

Jan



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