[En-Nut-Discussion] abstracted AHDLC sublayer

Harald Kipp harald.kipp at egnite.de
Wed Feb 27 15:22:54 CET 2008

Nicholas Preyss wrote:
> maybe you missed my post on this list from 18.2. about "PPP on ARM 
> AT921SAM7S".

I did, sorry for that.

> I would suggest putting the AHDLC part in a generic layer under the PPP 
> stuff and just using the arch-specific UART device for outputing.

For the ARM this would be definitely a good solution. For the 8-bit AVR 
this may not work because of performance reasons. The original intention 
for the specific AHDLC driver was to allow the ATmega128 to transfer MP3 
audio streams on a standard analog telephone line.

If you shrink away from modifying the Nut Configuration Files, I can do 
this for you. This way we can continue to use the existing 
implementation for the AVR and offer the generic one for all other 


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