Added NFCIP support (NDEF)

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I added NFCIP support to libnfc. It is a messy patch, but it works (see
included initiator and target example apps). You need two readers to test
this. The initiator and target send each other a simple "Hello World/Mars"
message.

Issues with the patch:
- I copied some functions and added "dep" in their name when the PN53x
instruction is different, this could be optimized a bit by having some kind
of configuration somewhere to indicate that DEP / NFCIP is used
- NFCIP needs to activate the target, which is something else than
selecting it apparently (different command)

The patch is against latest svn (r71).

Original issue reported on code.google.com by fkooman%tuxed.net@gtempaccount.com on 22 Aug 2009 at 4:31

Attachments:

• libnfc-nfcip.patch

[GoogleCodeExporter]

Updated patch. Somewhat cleaner now.

Original comment by fkooman%tuxed.net@gtempaccount.com on 28 Aug 2009 at 11:01

Attachments:

• libnfc-nfcip-reworked.patch

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Hey,

Thanks for patches but could you add doxygen comments to document API ?
What does DEP means ?
Does it remain issues with libnfc-nfcip-reworked.patch ?

Original comment by romu...@libnfc.org on 2 Sep 2009 at 4:38

• Added labels: Type-Enhancement
• Removed labels: Type-Defect

[GoogleCodeExporter]

> Thanks for patches but could you add doxygen comments to document API ?

I will look into this soon :) Is there already a doxygen configuration file 
available
somewhere? 

> What does DEP means ?

Data Exchange Protocol. 

> Does it remain issues with libnfc-nfcip-reworked.patch ?

Yeah well. It is still a problem, nfc_target_send_dep_bytes and 
nfc_target_send_bytes
are basically the same (also true for receive), only a different PN53x command 
is
used. But in the send method there is no way to know what PN53x command to use. 
This
could of course be added to the tag_info struct, but that does not get passed 
to the
send/receive functions.

Any ideas on this? I was thinking about creating a send_differentiated / send  
and
send_dep function where they both call send_differentiated with a parameter
specifying which command is required. Aaarrgh C! :)

Original comment by fkooman%tuxed.net@gtempaccount.com on 2 Sep 2009 at 4:50

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There are no Doxygen configuration file yet : use a default one.

I'll look at your issue regarding send/receive command is NFCIP mode next week.

Thanks again for this great contribution.

Original comment by romu...@libnfc.org on 2 Sep 2009 at 5:00

[GoogleCodeExporter]

Now with comments in libnfc.h 

Original comment by fkooman%tuxed.net@gtempaccount.com on 2 Sep 2009 at 9:58

Attachments:

• libnfc-nfcip-reworked-again.patch

[GoogleCodeExporter]

Applied as experimental feature in r89, thanks !

Original comment by romu...@libnfc.org on 3 Sep 2009 at 1:57

• Changed title: Added NFCIP support (NDEF)

[GoogleCodeExporter]

Original comment by romu...@libnfc.org on 3 Sep 2009 at 1:58

• Changed state: Fixed