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Re: [lwip-users] TCP sending without headers

From: Krzysztof Wesołowski
Subject: Re: [lwip-users] TCP sending without headers
Date: Wed, 10 Jul 2013 15:04:30 +0200

On Wed, Jul 10, 2013 at 1:58 PM, Peter LM <address@hidden> wrote:
I read something about NOCOPY during netconn-write(), and in the contrib
example the flag NOCOPY was used therefore I did the same. But It is
correctl running with the flag NETCON_COPY instead of NETCONN_NOCOPY !!
Obviously I would prefer to use NOCOPY since I only send "read-only data"
with the view to improve execution time and memory usage...
What you mean by read only data? It must be at least:
- directly adressible (flash or RAM in MCU),
- accesible by drivers DMA (for example Core Coupled RAM on STM32F4 cannot be used).

Krzysztof Wesołowski

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