MarkNic

Andy, gomore11,

Since the direct approach hasn't worked and technically the failures experienced seem to be a N+/N+2 issue I fired up another thread in that forum.  Hopefully more eyes will see it.

Mark

Just as an FYI...

I sent Chris Walker a direct message a couple days ago around the N+ board working and the N+2 board not working (with the Adafruit NFC board using I2C) but haven't heard anything back.  In fact the UI indicates that he hasn't read it yet.  The message I sent requested that he look more closely at this thread since it looks like we've got some good data for investigating why the N+2 board can't read/write to the NFC board. 

Hopefully soon,

Mark

If you are using a N+2 board and a shield designed for a arduino or Netduino don't you have to jumper the I2C pins from the N+2 dedicated pins to the ones used by the shield (analog pins 4-5: I2C SDA, SCL)?

I may be wrong but I've looked at the NFC board and the dedicated SDA/SCL pins have leads that run to the "MOSI" and "SS" connections which in turn go on to the other side of the board to pins A4 & A5. The jumpering seems to be there already.

Mark

gomore11,

If I can get the N+2 board and the NFC card working I may be able to help.  I have a WP8 (Nokia) so I also want the recognition and data transfer to work.

Mark

[font="arial, helvetica, sans-serif;"]Nice work Andy.[/font]

[font="arial, helvetica, sans-serif;"]My board must be bad.  I tried your code as well as mine and get the same result.  OR, there's a difference with Netduino Plus and N+2.  From your code, you must be using the N+ and mine is the +2 and no read or write for me.[/font]

[font="arial, helvetica, sans-serif;"]Also, you mentioned that reset/read/write is working.  Is the reset pin on your NFC board actually connected to something.  I looked closely at mine and it doesn't appear to have a lead going anywhere.  The 'RST' connection is right next to pin 3 but no lead to connects them.  Either way I don't think that has anything to do with my boards inability to work.  Just thought it was strange since all sample code I've see has the 'reset' method.[/font]

[font="arial, helvetica, sans-serif;"]Anyway, thanks again for all the research and passing on the info,[/font]

[font="arial, helvetica, sans-serif;"]Mark[/font]