Forum - Recent Threads

PN512 RSSI measurements

jbechtold — Mon, 08 Apr 2019 15:17:41 GMT

Hi,

For an NFC application I am developing, I need to extract some path loss information from the channel between the tag and the reader. As of now, I am developing and testing with the EXPLORE-NFC board from element14 and was wondering if I could extract RSSI measurements from the tag's response. Is this possible?

Thanks in advance!

Best Regards,

Jonathan

According AN11480 4.3 ??

ageens — Sat, 02 Feb 2019 12:51:24 GMT

According AN11480 43:

1. Copy the zip compressed software onto an USB Stick.

4. Change into the directory that contains the extracted files with the command:

cd ~/<directory of extracted files>/

5. Install the files with the command:

sudo dpkg -i libneardal0_<version>_armhf.deb neardexplorenfc_<version>_armhf.deb

Where “<version>” needs to be substituted with the real version strings

contained in the file names.

1. Which software packet needs to be downloaded.

5. I tried different available software packets eg SW282816. But then 5) is i think outdated.

Some advice plse

albert.geens@vdab.be

Explore NFC PN512

zwierzu14 — Mon, 29 Oct 2018 21:55:09 GMT

I have raspberry pi 3 . I am doing a college project and I want to use explore-NFC. I have followed every single step from their start-up guide https://www.nxp.com/products/identification-and-security/nfc/nfc-reader-ics/explore-nfc-exclusive-from-element14:PNEV512R?tab=Documentation_Tab

https://www.nxp.com/products/identification-and-security/nfc/nfc-reader-ics/explore-nfc-exclusive-from-element14:PNEV512…

I have also tried steps from https://www.youtube.com/watch?v=kbt4LFZptPk

https://www.youtube.com/watch?v=kbt4LFZptPk

Whole installation process seems fine, but when I go with explorenfc-basic none of my card is seen. Just nothing is happening.
I have checked and its not problem of a card, I enable SPI and reboot system couple of times. Will you have any hints for me?

Thanks!

Is there a mirror for the EXPLORE-NFC .deb download?

abackstrom — Tue, 31 Jul 2018 19:54:01 GMT

Where can I download this software without registering an account with NXP? I've already purchased and received the hardware but the download seems locked behind a CAPTCHA and registration form.

Live Webinar: Your ultimate guide to designing antennas for the NTAG I2C plus

mubeen.abbas — Mon, 23 Jul 2018 11:43:47 GMT

Dear all,

Please be invited to NXP NFC Webinar: “Your ultimate guide to designing antennas for the NTAG I2C plus”. Also feel free to forward it to your relevant customers, partners and distributors.

Your ultimate guide to designing antennas for the NTAG I2C plus

Webinar

Connected NFC tags such as the NTAG I²C plus are the easiest and most cost effective solution to add NFC capabilities to almost any device.

Antennas, on the other hand, are the only interface between the NTAG I²C plus and the NFC-enabled mobile device, and thus need to be designed precisely according to your individual application. In this webinar, NXP presents a hands-on, how-to-guide to facilitate your antenna design based on NTAG I²C plus.

Join us for this technical online session and convince yourself of NXP’s easy-to-use support tools.

July 25, 2018 at 10:00 AM CEST & 08:00 AM PDT

► NTAG I²C plus NFC antenna design theory

► NTAG I²C plus NFC antenna design procedure

► NTAG I²C plus NFC antenna design tools

Registration link: https://attendee.gotowebinar.com/rt/6681941460249295875

After registering, you will receive a confirmation email containing information about joining the webinar.

Attachments:

NFC tag and developers kit to develop application

simukas — Sun, 18 Mar 2018 16:52:53 GMT

Hello I am a student and writing a specification for the applicaiton which would read the NFC tag or sticker using mobile phone and it will send the data to the database . it will be date/time, room no, asset code.

I would like to purchase tags and beginner developers kit to try to write a small programme for my presentation to show it can read the tag and send data what kit shall I buy and where to start? I will also need to creaete a primitive mobile interface for the user after they touch the tag to indicate they succeded. Would like some advice what kit to get and bit help/guidance on programming.

explorenfc-basic > file.txt in loop

jan_b — Thu, 21 Sep 2017 05:20:06 GMT

Hello everybody,

for a project I want the command explorenfc-basic > file.txt in loop. The parameter > file.txt results a text file with the content of the NFC tag being written to the desired directory.

This works synonymous perfectly. However, I would like the program does not break off after the first "card scan". For this there is the "-k" option (Hold the program run).

The command explorenfc-basic -k works perfectly, but if I write explorenfc-basic > file.txt -k it does not work.

Anyone an Idea?

explorenfc-basic > file.txt in Schleife

jan_b — Mon, 04 Sep 2017 07:26:35 GMT

Hallo zusammen,

für ein Projekt möchte ich, dass der Befehl explorenfc-basic > file.txt in Schleife ausgeführt wird. Der Parameter > file.txt führt ja dazu, dass eine Textdatei mit dem Inhalt des NFC Tags in das gewünschte Verzeichnis geschrieben wird.

Das funktioniert auch einwandfrei. Allerdings möchte ich dass das Programm nach dem ersten "Karten-Scan" nicht abbricht. Dafür gibt es ja laut Anleitung die Option "-k" (Keep the program running).

Der Befehlt explorenfc-basic -k funktioniert tadellos, wenn ich allerdings explorenfc-basic > file.txt -k schreibe funktioniert das ganze nicht.

Ich möchte quasi, dass sich nach jedem Scan einer Karte die txt Datei mit den jeweiligen Kartendaten aktualisiert. Von Hand jedes mal explorenfc-basic > file.txt einzutippen oder die Pfeiltasten zu nutzen ist ja nicht zielführend. Das ganze soll ja "automatisiert" laufen.

Das Ganze habe ich auch schon mit der Option watch versucht. Funktioniert beim Standartbefehl explorenfc-basic natürlich Problemlos. Der Befehl watch explorenfc-basic > file.txt funktioniert allerdings nicht. Hier passiert nach dem ersten Karten-Scan nichts mehr.

Kennt jemand eine Lösung?

Vielen Dank.

Building ExploreNFC from source on Raspbian Jessie image 2017-06-21

noeldkendall — Wed, 23 Aug 2017 17:41:35 GMT

Environment:

Pi Systems: Raspberry Pi 3 Model B (revision a22082) and Raspberry Pi Model B Rev 2 (revision 000e)

NXP Explorer Board (element14) Explore-NFC Rev 1.6

I am trying to build from source for both reference and I have a proof of concept project (part of a much larger project)

and need to develop some custom handling.

According to the current links (as of time of posting) from NXP website, I need the following archive files:

SW282816.zip

SW3639.zip

I am familiar with C and both read and code in it, but these are dusty skills, although in the past I have succeeded at

developing device drivers. Just to level set abilities. I am these days a Java Enterprise developer. My POC goal is to

build a Tomcat webapp that will on demand prepare the reader to receive information from an Android Kitkat+ device via

NFC. A step along the way will be do build out a Java JNI wrapper around access to the NXP board. The explorer examples

will act as a reference to determine what is needed in this JNI wrapper.

I don't see an archive for a compatible version of neardal - hence I fetched 0.14-3.tar.gz from github AppNearMe archives.

The resulting package builds without error. I am unsure if this code is compatible or not, which adds to my confusion. My understanding

is that this is the component that will interface with dbus. I see that the installation implants /etc/dbus-1/system.d/org.neard. This configuration

file is slightly different than the one which is installed using the .deb files out of SW2827.zip. 2827 installs

Following the instructions in document AN11802.pdf, I have attempted to build what is needed from source. There are some issues

I am having difficulty resolving.

1) SW3639 is the NxpNfcRdLib. I encounter compile errors in NfcrdlibEx5_ISO15693 as follows:

[ 87%] Building C object NfcrdlibEx5_ISO15693/CMakeFiles/NfcrdlibEx5_ISO15693.dir/NfcrdlibEx5_ISO15693.c.o

/Volumes/workvol/workspaces/raspbian/work/NxpNfcRdLib-201708221632/NfcrdlibEx5_ISO15693/NfcrdlibEx5_ISO15693.c: In function ‘NfcrdlibEx5_ISO15693’:

/Volumes/workvol/workspaces/raspbian/work/NxpNfcRdLib-201708221632/NfcrdlibEx5_ISO15693/NfcrdlibEx5_ISO15693.c:209:43: error: ‘phacDiscLoop_Sw_DataParams_t’ has no member named ‘sTypeVTargetInfo’

phApp_Print_Buff(sDiscLoop.sTypeVTargetInfo.aTypeV[0].aUid, 0x08);

^

/Volumes/workvol/workspaces/raspbian/work/NxpNfcRdLib-201708221632/NfcrdlibEx5_ISO15693/NfcrdlibEx5_ISO15693.c:212:47: error: ‘phacDiscLoop_Sw_DataParams_t’ has no member named ‘sTypeVTargetInfo’

memcpy(aReceivedUid, sDiscLoop.sTypeVTargetInfo.aTypeV[0].aUid, 0x08);

^

/Volumes/workvol/workspaces/raspbian/work/NxpNfcRdLib-201708221632/NfcrdlibEx5_ISO15693/NfcrdlibEx5_ISO15693.c:215:50: error: ‘phacDiscLoop_Sw_DataParams_t’ has no member named ‘sTypeVTargetInfo’

if (DisplayCardTypeInfo(sDiscLoop.sTypeVTargetInfo.aTypeV[0].aUid) == PH_ERR_SUCCESS)

^

/Volumes/workvol/workspaces/raspbian/work/NxpNfcRdLib-201708221632/NfcrdlibEx5_ISO15693/NfcrdlibEx5_ISO15693.c:226:62: error: ‘salI15693’ undeclared (first use in this function)

status = phalI15693_ReadSingleBlock(&salI15693,

^

/Volumes/workvol/workspaces/raspbian/work/NxpNfcRdLib-201708221632/NfcrdlibEx5_ISO15693/NfcrdlibEx5_ISO15693.c:226:62: note: each undeclared identifier is reported only once for each function it appears in

/Volumes/workvol/workspaces/raspbian/work/NxpNfcRdLib-201708221632/NfcrdlibEx5_ISO15693/NfcrdlibEx5_ISO15693.c:227:29: error: ‘PHAL_I15693_OPTION_OFF’ undeclared (first use in this function)

PHAL_I15693_OPTION_OFF,

^

/Volumes/workvol/workspaces/raspbian/work/NxpNfcRdLib-201708221632/NfcrdlibEx5_ISO15693/NfcrdlibEx5_ISO15693.c:286:26: error: ‘PHPAL_SLI15693_FLAG_NBSLOTS’ undeclared (first use in this function)

(PHPAL_SLI15693_FLAG_NBSLOTS | PHPAL_SLI15693_FLAG_DATA_RATE | PHPAL_SLI15693_FLAG_INVENTORY),

^

/Volumes/workvol/workspaces/raspbian/work/NxpNfcRdLib-201708221632/NfcrdlibEx5_ISO15693/NfcrdlibEx5_ISO15693.c:286:56: error: ‘PHPAL_SLI15693_FLAG_DATA_RATE’ undeclared (first use in this function)

(PHPAL_SLI15693_FLAG_NBSLOTS | PHPAL_SLI15693_FLAG_DATA_RATE | PHPAL_SLI15693_FLAG_INVENTORY),

^

/Volumes/workvol/workspaces/raspbian/work/NxpNfcRdLib-201708221632/NfcrdlibEx5_ISO15693/NfcrdlibEx5_ISO15693.c:286:88: error: ‘PHPAL_SLI15693_FLAG_INVENTORY’ undeclared (first use in this function)

(PHPAL_SLI15693_FLAG_NBSLOTS | PHPAL_SLI15693_FLAG_DATA_RATE | PHPAL_SLI15693_FLAG_INVENTORY),

^

All other code out of this project builds correctly. There is a resulting NxpNfcRdLib.a built without error, as well as the other examples.

2) SW282816 will not complete the cmake step. The CMakeFiles.txt at project top references an external project to build the NxpNfcRdLib. The cmake terminates when

it discovers the needed external project (which defaults to a subfolder of the project) is empty. I would rather not monkey around with the cmake file as my working style

is to build shell scripts that will idempotently build the artifacts needed - and sed'ing the CMakeFiles is not a fun coding exercise (but I will do it if I have to).

The relevant results of the cmake are:

CMake Error at /usr/share/cmake-3.6/Modules/ExternalProject.cmake:1924 (message):

No download info given for 'NXPRDLIBLINUX' and its source directory:

/Volumes/workvol/workspaces/raspbian/work/NxpNfcRdLib-201708221632/nxprdlib-linux

is not an existing non-empty directory. Please specify one of:

* SOURCE_DIR with an existing non-empty directory

* URL

* GIT_REPOSITORY

* HG_REPOSITORY

* CVS_REPOSITORY and CVS_MODULE

* SVN_REVISION

* DOWNLOAD_COMMAND

Call Stack (most recent call first):

/usr/share/cmake-3.6/Modules/ExternalProject.cmake:2473 (_ep_add_download_command)

CMakeLists.txt:13 (ExternalProject_Add)

-- Checking for module 'glib-2.0>=2.40'

-- Found glib-2.0, version 2.42.1

-- Checking for module 'gthread-2.0>=2.40'

-- Found gthread-2.0, version 2.42.1

-- Checking for module 'gio-2.0>=2.40'

-- Found gio-2.0, version 2.42.1

-- Checking for module 'gio-unix-2.0>=2.40'

-- Found gio-unix-2.0, version 2.42.1

-- Checking for module 'neardal'

-- Found neardal, version 0.14.0

-- Configuring incomplete, errors occurred!

See also "/Volumes/workvolworkspaces/raspbian/work/NFCExplorer-201708231321/neard-explorenfc-1.2/build/CMakeFiles/CMakeOutput.log".

makefile was not created - there was a cmake failure

3) Attempting to run neardal demo - I see 'no adapter found'

I have been sure to enable SPI on both Pi platforms, and lsmod shows:

Module Size Used by

evdev 12423 2

joydev 9988 0

hidp 15368 1

md4 3862 0

md5 2608 1

hmac 3252 1

bnep 12051 2

hci_uart 19956 1

btbcm 7916 1 hci_uart

bluetooth 365511 27 hidp,hci_uart,bnep,btbcm

nls_utf8 1656 1

cifs 421953 2

brcmfmac 222874 0

brcmutil 9092 1 brcmfmac

cfg80211 543027 1 brcmfmac

rfkill 20851 4 bluetooth,cfg80211

snd_bcm2835 24427 1

snd_pcm 98501 1 snd_bcm2835

snd_timer 23904 1 snd_pcm

spidev 7373 0

snd 70032 5 snd_timer,snd_bcm2835,snd_pcm

i2c_bcm2835 7167 0

bcm2835_gpiomem 3940 0

spi_bcm2835 7596 0

uio_pdrv_genirq 3923 0

fixed 3285 0

uio 10204 1 uio_pdrv_genirq

i2c_dev 6913 0

fuse 99603 3

ipv6 406751 58

Output from ./demo:

pi@pi3:/Volumes/workvol/workspaces/raspbian/work/NeardAl-201708230924/neardal-0.14-3/demo$ ./demo

neardal_mgr_prv_get_all_adapters(): Error: 2:GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.neard was not provided by any .service files

In another terminal window, monitoring dbus, I see the following when I attempt to run the neardal demo:

pi@pi3:~$ dbus-monitor --system

signal sender=org.freedesktop.DBus -> dest=:1.28 serial=2 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=NameAcquired

string ":1.28"

signal sender=org.freedesktop.DBus -> dest=(null destination) serial=42 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=NameOwnerChanged

string ":1.29"

string ""

string ":1.29"

signal sender=org.freedesktop.DBus -> dest=(null destination) serial=43 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=NameOwnerChanged

string ":1.29"

string ""

The dbus configuration file (which I did install using the .deb package) is as follows:

<!DOCTYPE busconfig PUBLIC

"-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"

"http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">

</policy>

</policy>

</policy>

</busconfig>

I am reaching out to the community to see if anyone can help me straighten out this mess. The NXP board will not

react to any tag, including the standard MIFARE tag enclosed with the Explorer board from Element14.

ISO 14443 type B. Ndef data?

v.manojrohit — Tue, 04 Jul 2017 12:51:31 GMT

Hello all,

Is it possible to read the Ndef Messages from type 4B nfc tags using the NFC Reader Library?. I tried downloading the NFC Reader Library from http://www.nxp.com/pages/:NFC-READER-LIBRARY. The latest Version for Linux doesn't Support the NFc-explore. So I have downloaded the previous Version Linux" version 4.040.05.011646.

But I dont find Header files like phpalI14443p4b included in any of the examples and also in Reader library. My NFC Type 4B is being detected. I am obtaining the UID but not NDEF message. Is there anyway to obtain the NDEF Messages in NFC-explore for Type 4B tags?

Thank you all in advance.

Read Data from Tag ISO14443 4B

bavariankahuna — Thu, 18 May 2017 08:58:42 GMT

Hey Guys,

is there any python wrapper which I cann use to read Tags with ISO14443 4B standard?

Nxppy https://github.com/svvitale/nxppy/blob/master/README.md is only using ISO144443 3A/4A standards.

Thanks in advance.

Cheers

Bassem

NXP Error

pfrazier2010 — Fri, 05 May 2017 21:56:15 GMT

Everything is installed right. When I go to run explorenfc-basic I get this error message

neardal_mgr_prv_get_all_adapters(): Error: 2:GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.neard was not provided by any .service files

No adapter found.

How do you fix this problem?

How do I send a file to an Android phone?

bernrod — Tue, 25 Apr 2017 00:54:23 GMT

Hey guys,

Sorry for dumb questions but the documentation is a really mess and i am having troubles to get it all. I can't get to examples code and for a programmer sometimes is though to understand all the picture only by looking to its execution...

I want to send a yaml file to an android phone(when gets in the range). Please can you help me?

NFC card cloning, can I save the copied data to a file

krackan — Thu, 30 Mar 2017 09:58:02 GMT

Hi I'm new to NFC and doing a project at Uni. my question is this: after scanning a card to be cloned, can I save the copied data to a file? I'm using rpi jessie with the PN512r board.

Thanks in advance for your help

PN512 as target or tag

ediler — Wed, 29 Mar 2017 08:05:05 GMT

Hello,

Can we use pn512 as tag also? I mean, can we read its ID and write NDEF message on its user memory via phone, for example?

Bluetooth Pairing using EXPLORE NFC

akshaykumar — Wed, 15 Mar 2017 09:25:11 GMT

Can we query a mobile phone from the EXPLORE NFC board to send a handover request message consisting of the Device's Bluetooth Address? Is there any other way to obtain the device's BT Address via EXPLORE apart from writing onto a tag and then reading?

Make explorenfc v1.6 on raspberry pi 2 on mars 2017

godlewski — Sun, 05 Mar 2017 18:13:10 GMT

Hi,

I'm trying to read a nfc tag with an explorenfc and raspberry 2 with raspbian jessie, kernel 4.4.48-v7+.

I've found a simple installation process on nxp website : Download SW2827.zip and install the two .deb : libneardal0_0.14.3-1_armhf.deb neard-explorenfc_1.2-1_armhf.deb

The installation process works well but the neard-explorenfc service does not work : after a minute, the service "exited" :

● neard-explorenfc.service - LSB: NFC daemon for Explore-NFC and Raspberry Pi

Loaded: loaded (/etc/init.d/neard-explorenfc)

Active: active (exited) since dim. 2017-03-05 18:45:21 CET; 2min 11s ago

mars 05 18:45:20 raspberrypi neard-explorenfc[31470]: Starting NFC daemon: explorenfcd.

mars 05 18:45:21 raspberrypi systemd[1]: Started LSB: NFC daemon for Explore-NFC and Raspberry Pi.

Launching the daemon in debug mode gives more information:

$ sudo explorenfcd -nd

** INFO: Constant polling is disabled

** INFO: Starting main loop

** INFO: Adapter at /org/neard/nfc0

** (explorenfcd:31680): DEBUG: Bus org.neard ready

Line: 528 Error - (0xF001) has occurred : 0xCCEE CC-Component ID, EE-Error code. Refer-ph_Status.h

** (explorenfcd:31680): ERROR **: Could not init NXPRdLib

In the NxpNfcRdLib/types/ph_Status.h file from SW3693, I can't find the F001 code.

Is there somebody understanding this error ?

Regards,

Mathieu

Explore-NFC compatibility?

limerin — Mon, 27 Feb 2017 13:18:01 GMT

Is the Explore-NFC compatible with Raspberry Pi 3?
& what are the list of compatible cards & tags that Explore-NFC can read & write?
How long would it takes to mail this to Malaysia?

Can we read data from a mobile phone having NFC Capability using EXPLORE NFC by P2P?

akshaykumar — Mon, 27 Feb 2017 08:27:02 GMT

In that case can the Bluetooth Device Address of a mobile phone be obtained over NFC to our Raspberry Pi? This is required for pairing of Raspberry Pi with the Mobile phone by sending this to the BlueZ daemon to initiate pairing.

Thanks in advance

Will the Explore NFC board support libnfc? And can it be used with Raspberry Pi 3 Model B?

akshaykumar — Thu, 02 Feb 2017 09:15:26 GMT

Will the Explore NFC board support libnfc? And can it be used with Raspberry Pi 3 Model B?

I²C hardware config and further questions

hamü — Fri, 16 Dec 2016 09:12:32 GMT

Hi!

I'm hamü from Germany and a novice when it comes to most of these things. Thanks so far for the helpful support in the other thread! I think it is better to start an new discussion for this and not to hijack the other one.

I have multiple EXPLORE-NFC v1.6 boards (FCC ID: 2AASNEXPLORE-NFC-WW), several RPi 3 and with each I intent to use I²C with one RPi 3 (so each time one EXPLORE-NFC with one RPi 3).

The reason why I want to use I2C and not SPI is that I want to connect a SPI touch display (PINs used shown in the table at the bottom) as well. So in my eyes the solution (please correct me if I am wrong) is to use I2C for NFC-Explore and SPI for the display as the latter also uses the pins 19, 21, 23 and 24 and is therefore overlapping with the pins I need for the NFC-explore board with SPI.

I want to use the NFC Reader Library for Linux v4.040.05.011646 because of I²C support. Are the example mentioned in the installation guidelines (AN11802) also working with I²C? Is nxppy working when using I²C?

Regarding the hardware configuration of the board for using I²C I used the PNEV512B Quick Startup Guide (http://www.nxp.com/documents/application_note/AN11308.pdf ) as mentioned in AN11802: NFC Reader Library for Linux Installation Guidelines (https://nxp.flexnetoperations.com/control/frse/download?agree=Accept&element=8359537 ). Below I attached an edited picture of the board with my understanding regarding correct I²C configuration.

Something I am not sure about is the I²C address configuration in software as I cannot find any information about this in the documents mentioned earlier.

Where can I find information about it (EXPLORE-NFC specific), how is that realized in your software and what do I have to know about it when only using one I²C device?

As I don't know much about I²C, this address configuration is necessary when using several devices at the I²C bus and therefore having the need for master-slave configuration and/or distinguish between them, if not specified via software. Is that correct?

So for getting the board working with I²C I have everything I need now, right? The correct library with examples and the correct hardware configuration (as in the pic)? Is there something else I am missing or need to know?

Kind regards,

hamü

-----------------------------------------------------------------------------------------

Display pins:

Display Raspberry Pi Info ---------------------------------- GND GND Ground 5V 5V 5V Power Supply LCD-LED GPIO18 Display Backlight, can be set to GPIO12 with Jumper BL LCD-RST GPIO23 Display Reset LCD-DC GPIO24 Display Command/Data Select (DC/RS), Jumper IO24-RS LCD-CS GPIO8 (CE0) (pin24) Display Chip Select ADS-CS GPIO7 (CE1) Touchcontroller Chip Select ADS-IRQ GPIO25 Touchcontroller Interrupt Output MISO GPIO9 (MISO) (pin21) SPI Master-In Slave-Out MOSI GPIO10 (MOSI) (pin19) SPI Master-Out Slave-In SCK GPIO11 (SCK) (pin23) SPI Clock

NDEF message use in python

moritz_maurer — Fri, 02 Dec 2016 18:39:52 GMT

I want to read a simle text from a tag on the raspberry pi. So how can I use this text from my tag in python?

Android app for an N F C shopping cart

robert99 — Sun, 20 Nov 2016 12:18:28 GMT

Hi,

I am trying to setup a shopping cart to scan NFC tags which are automatically added to a shopping cart. However it seems there is no such active apps in playstore. can anyone point out where I can find ?

Thanks

Write NFC tags

Former Member — Thu, 29 Sep 2016 13:47:33 GMT

I can't understand if the Explore-NCF module is meant only for reading NFC tags or if I can write them too.

Is it possibile?

PN512 problems (explore-nfc-ww -kit)

Former Member — Thu, 15 Sep 2016 11:22:37 GMT

Hi all.

I'm totally noob what comes to NFC. I'm trying to get the element14 PN512 board to work in my embedded project. I'm using the this SW library as base:

NFC Reader Library V04.030.00 R1 for PNEV512B including all software examples

I'm using MifareReaderC example with I2C and so I'm not using the serial setup from the code. I can communicate OK with the chip.

Problems:

1. However the timer implementation doesn't seem to start the timer. I added write to control register (address 0x0c) with param 0x50 (trigger now + initiator) after each timer conf. This puts the timer running and i can get the interrupt to be visible in the register. However shouldn't the original setup do this out-of-box? What I'm missing here?

2. The type 2 tag card that comes with the kit. Can it be read out of box or does it require writing someting to card? The SW is polling it, but cannot detect anything. I'm using the PN512 as initiator.

The examples are pretty cumbersome (don't really want to say horrible) and code rather old ('04/'06). Is there any simple c library available for PN512? Or any good tutorial how this and NFC should work. I have currently no idea if this is even correct configuration for card reading. I've tried reading all the documents and wiki stuff regarding Mifare/Felica/NFCIP-1 but not really having any big revelations how this whole field should work and what is what.

Sorry if that was a lot, but I'm more than little confused. NFC seemed like are that must be like one standard and everything nicely packaged to nicely available open source libraries. Not so much it seems . Weirdest thing is that why there's so little info of 512 even though NXP claims it's the de-facto standard.