View unanswered posts | View active topics It is currently Tue Jan 28, 2020 4:07 am

Reply to topic  [ 3 posts ] 
BLE NFC Shield Project 
Author Message

Joined: Sun Aug 05, 2012 9:00 am
Posts: 5
Do you find that the data is not being sent across the wire after a couple reads of an nfc tag? Arduino Serial monitor shows that data is being read by the NFC Shield, but nothing is being received on the iOS side.

Wed Aug 08, 2012 4:51 am

Joined: Sun Aug 05, 2012 9:00 am
Posts: 5 seems to work fine with the miFare classic card that comes with the Adafruit NFC Shield. But other tags (I have some mifare style sticker tags) seem to mess things up. It will read them once, but then everything grinds to a halt. Will try to figure out what's up with that.

Wed Aug 08, 2012 5:03 am
Site Admin

Joined: Thu Aug 02, 2012 11:36 am
Posts: 166
Hi Jon,
it has something to do with the length of the UUID.
I only tested it with 4byte UUIDs so the buffer is prefilled with 12 byte zeros. If there are more than 4 byte UUIDs, the buffer is messed up :-)

The demo sketch as some options for improvements.


Wed Aug 08, 2012 9:39 am
Profile WWW
Display posts from previous:  Sort by  
Reply to topic   [ 3 posts ] 

Who is online

Users browsing this forum: No registered users and 1 guest

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group
Designed by ST Software for PTF.