• Registered: 2011-11-02
  • Posts: 2

Topic: Serving a file from ACR122 ??

Dear friends,

A few weeks ago I bought a ACR122, and several tags to test NFC technology, which I find quite interesting.

To my surprise the kit had not sent me any kind of software to manage the ACR122, only an indication to get the driver.

After several days searching, I found the web libnfc.org, which now I want to participate.

At the moment, i have the following hardware and software:

- ACR122
- 2 tags
- PC with Windows Vista Home Premium 32bit
- And possibly within a short time to a phone Nexus S

I like to know, if from the ACR122 can be connected to the computer to perform a program that is continuously serving a file (for example: video, audio, pdf, programs Apk, .... etc) so that if someone with a terminal as the Nexus S (without additional software) can download the file and run, by NFC comunication.

Is this possible?

Would be very grateful if someone can inform me if you can do, and if yes how this can be carried out.

Thanks. David.

davidvaluex ARROBA gmail.com

  • Registered: 2011-11-02
  • Posts: 2

Re: Serving a file from ACR122 ??

some idea, please?

  • Registered: 2011-11-09
  • Posts: 4

Re: Serving a file from ACR122 ??

Hi, I'm also interested in this reader, i'm planning to buy this kit
http://www.buynfctags.com/products.php? … opment-Kit

but as you have, it doesn't have any sdk of software example.
searching in the web of the fabricant i found this
http://www.acs.com.hk/index.php?pid=pro … ACR122-SDK

it's a sdk with examples and two readers.

you can't just buy the sdk, and i'm not planning to spend more than 70 bucks for this reader (i'm a student)
I'm also interested as you in develop an app for peer-to-peer interchange of files, not just reading/writing

do you have found something to work with your reader?

thanks

  • rconty
  • Administrator
  • Offline
  • Registered: 2009-04-22
  • Posts: 673

Re: Serving a file from ACR122 ??

Hello,

Please read this topic:
http://www.libnfc.org/community/topic/5 … th-libnfc/

Now, you should understand more about ACR122 and libnfc.

About your case, to exchange data with a Nexus S (or any NFC-equipped Android platform), that's recommended to use LLCP.

In Android 2.3 (gingerbread), you can push NDEF file using Android's NPP (NDEF Push Protocol)¹.
In next Android release 4.0 (Ice Cream Sandwich), the standard SNEP will be used. Please note that Nexus S will be updated in 4.0 soon.
As SNEP is a standard defined by NFC Forum it will widely supported by NFC devices.

As you are a beginner in NFC, please note that SNEP or NPP comes on top of LLCP: LLCP is the "link protocol" while SNEP is the "data protocol".

If you just want a simple and easy NDEF content sharing (without exchange) with device that are not able to do LLCP, you could emulate an NFC Forum Tag Type 4A if you NFC adaptor is able to.

[1] http://static.googleusercontent.com/ext … otocol.pdf

Romuald Conty