Low Power RF & Wireless Connectivity

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Low Power RF & Wireless Connectivity

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7970 7960 rfid SPI TRF7970A EVM
Related Posts

  • Forum Post: RE: TRF7970A EVM UID reading Error

    Moon ChungHwan
    Dear Sir. We use 13.56MHz NXP S50 and fudan compatibility chip, and UID is 4 byte. We made sample copy board follow EVM board. everything is same. and this UID read error is occur all boards (your EVM and our copy board) we made UID auto polling program(reference find tag), and when we...
    on Jul 21, 2012

  • Forum Post: How to read/write to Mifare S50 card and How to P2P with android phone

    Moon ChungHwan
    Dear Sir. We are testing TRF7970A EVM board. I'd like to know how to read/.write memory block of Mifare S50 card I can see some posts about it. somebody say, use 7960 firmware.. it can work on 7970A? and how to get this firmware? and about P2P with android phone. How can we do? Do...
    on Jul 22, 2012

  • Forum Post: How can I read multiple block from other RFID IC e.g. ICodeSL2 NXP?

    Hiro Hiro
    Hello, I am wiriting my own applicationwith C# and my requirement is to write 2 blocks of user memory. I have check with TI's GUI and it work well with TI transponder but I have problem when I change to other transponder with ICODE SL2. Do I need to modify somethig with TI's GUI? Or there is...
    on Aug 11, 2012

  • Forum Post: Connecting copper wire antenna to TRF7960AEVM help

    Dave Wang
    Hello, I am trying to connect an antenna i made with copper wire to the TRF7960AEVM eval kit to experiment with, but have a few questions: 1) Does ANY copper wire work for this application? 2) Is there a guide on how to replace the original antenna from the eval kit with an external one? I could...
    on Aug 17, 2012

  • Forum Post: TRF7970 EVM failure reading Fujitsu MB89R118 tags

    tdyer
    I recently purchased a TRF7970 EVM board and I'm trying to read a Fujitsu MB89R118 that it is ISO15693 compliant. The inventory command fails along standard reads and writes. I can read other ISO15693 tags. I think it may be due to the Fujitsu requiring ASK 10% only. Any sample code or suggestions...
    on Aug 20, 2012

  • Forum Post: How to run in debug mode and distinguish two RFID tags in "Stand alone mode"?

    Henrik Zimmermann
    Hi I'm working on a project where I need the TRF7960EVM to work in "Stand alone mode" and detect if two or more 15693 tags are present. The indication can be very simple e.g. the LEDs on the EVM board. However the problem is to determine of there are more than one tag present. I have...
    on Aug 23, 2012

  • Forum Post: Where is the UID stored in source code for TRF7960/TRF7970 EVM

    Henrik Zimmermann
    The information obtained from the RFID tag seems to be stored in the variable "buf", which is an array with the length 300 and declared as unsigned 8 bit. In the code (ISO15693.c) there is a comment saying that "the first UID will be stored from buf[1] upwards", but a lot of other...
    on Aug 29, 2012

  • Forum Post: TRF7970A nfc p2p cannot send block data

    weike shen
    I want to send more than 128 bytes within a data block, and because the FIFO size is 128, so I must split the block into several parts to send. But why only after the first part has been sent, TRF7970 will ocur TX interrupt, others no any interrupt following.
    on Sep 12, 2012

  • Forum Post: RE: TRF7970A nfc p2p cannot send block data

    weike shen
    Hi Marco, Firstly, thanks for your enthusiastic answer. Just now, I have resolved this problem, and I made a stupid mistake. As my TRF7970A communicated with MCU by SPI interface, I haven't supply sufficient DATA_CLK for it. However, I have a new issue. Because of the power consumption, I can...
    on Sep 21, 2012

  • Forum Post: RE: TRF7970A used as passive target only

    weike shen
    Hi Eddie LaCost, My application is just like what Luca said. My sensor is working as passive tartget mode and TRF7970A always keeps in power down mode 2( Sleep), I want to enable EN high when RF changed and begin communication, while disable EN when RF removed. But I don't known why the operation...
    on Sep 22, 2012

  • Forum Post: TRF7970A registers problems (same as in TRF7960) report

    Danko Ivanov
    Hi to all, This report could be usefull for many of you. Note that this was tested for SPI with SS only. Sincerely Danko Ivanov REPORT OF TRF7970A Registry problem I. Problem description NOTE! All data below are collected using SPI with SS. Other communications protocols ( parallel...
    on Oct 13, 2012

  • Forum Post: RE: Writing/Reading into an ISO14443 Tag with TRF7960 EVM board

    tanmay middha
    Hey Josh Wyatt i am using same kit TRF7960EVM kit for reading Mifare tag,presently i modified full firmware for my desired application. According to my application i am only detecting ISO 14443-A compliant tags so i included trf797x.c, iso14443-a.c and basic files. problem i am facing that whenever...
    on Oct 16, 2012

  • Forum Post: TRF7970A as passive RFiD tag!

    Armando Gonz��lez
    Hi everyone! I am currently working on a project where I have to use an NFC chip as an 13,56Mhz RFID passive tag, where the transmission of the id code associated with the chip is controlled by a microcontroller. Currently I can have the TI NFC chip TRF7970A for project development. I have several...
    on Oct 16, 2012

  • Forum Post: RE: TRF7970 SPI tristate

    tanmay middha
    Hi Rich Mullen, whenever you want to use JTAG pins you have to make that TEST pin(Pin no. 1) HIGH so all connection will shift internally for JTAG and then you can use for jtag connections. Have you got the connections for muxing the antenna, i need two antenna connection from single TRF. Thanks...
    on Oct 22, 2012

  • Forum Post: Writing/Reading Mifare Tags through trf7960EVM

    tanmay middha
    hey i am using same kit TRF7960EVM kit for reading Mifare tag,presently i modified full firmware for my desired application. According to my application i am only detecting ISO 14443-A compliant tags so i included trf797x.c, iso14443-a.c and basic files. problem i am facing that whenever i read mifare...
    on Oct 17, 2012

  • Forum Post: RE: Writing/Reading Mifare Tags through trf7960EVM

    tanmay middha
    hey no answer in 2 weeks. Thanks I tested this issue in each and every mifare classic card, each one is giving me same issue not able to select the tag. May be there is something wrong in protocol handling but i modified firmware according to application note given in TI site. Not getting SAK...
    on Nov 1, 2012

  • Forum Post: RE: RFID reader with TRF7960 and PIC24FJ128GA010

    javi garcia
    Josh, I have the same result, the IQR is high. I use the TRF7960EVM, but i want to work directly with TRF7960, whitout MSP. My tag is HF-I standard, and only want read the UID Number I use the command of the http://www.ti.com/lit/ds/symlink/trf7960a.pdf (page 26).
    on Dec 28, 2012

  • Forum Post: RE: trf7970a evm

    Henrik Zimmermann
    Hi Mrc, I having the same trouble/issue. It is right, that according to the schematic, EN2 to not connected to ground, however on the physical board there is a resistor of 10kOhm mounted directly on the HDR2 connection, that is connecting EN2 to ground. This means that both EN and EN2 are grounded...
    on Jan 8, 2013

  • Forum Post: RE: Why does the TRF7960A EVM turn on with both EN and EN2 pulled low?

    Henrik Zimmermann
    Hi I’m a little concerned, that no one has answered the question, though it seems very simple and basic. Does it mean that no one knows or can explain why the EVM board turns on??? I can see, that the same questions/issue has been raised before (a couple of years ago), with a similar result...
    on Jan 13, 2013

  • Forum Post: i'm having trouble with communicating trf 7970A with my nokia 603 device....

    thomas paulson
    i'm an engineering student doing project based on a creation of an app for money transaction through mobile phone (a prototype) but first i need to link up my device with TRF7970A. Actually i'm having trouble with establishing communication b/w nokia 603 device and trf 7970. i'm stuck in...
    on Dec 4, 2012

  • Forum Post: RE: Why does the TRF7960A EVM turn on with both EN and EN2 pulled low?

    Henrik Zimmermann
    I have thoroughly checked again… and I think I have reached a conclusion. On the EVM board there is a resistor that pulls EN2 to ground, which means that the EVM board should never come to life - but it does. Even if I remove the resistor and make short circuit to ground it comes to life. It...
    on Jan 21, 2013

  • Forum Post: RE: Why does the TRF7960A EVM turn on with both EN and EN2 pulled low?

    Henrik Zimmermann
    Hi Josh I'm aware the that the firmware is involved in the initialization of the TRF7960, however this I slightly more fundamental. If you look at the schematic of the TRF7960A-EVM, you will see, that EN2 is floating (not connected), but on the actual board there is a 10K resistor which pulls the...
    on Jan 21, 2013

  • Forum Post: RE: Why does the TRF7960A EVM turn on with both EN and EN2 pulled low?

    Henrik Zimmermann
    - Josh Thanks for the answer -but it still doesn't answer the very simple question: What makes the EVM board start-up? Please look at the schmematic of the EVM board and the board itself. EN2 is connected to ground and same applies for EN until the MCU is turned on, which means that EN=0 and...
    on Jan 27, 2013

  • Forum Post: Read range question

    STEWART EADY
    Greetings: I am trying to design an external antenna for the TRF7960AEVM kit. I am having a lot of trouble with the magnetic field strength necessary to power the Tag-IT HF-I tags. According to the datasheets for a standard tag (RI-I17-114A-01) it requires a 110dBuA/m field to operate, or 10.19 weber...
    on Jan 28, 2013

  • Forum Post: RE: How to Use two Antenna with trf7970a

    Rahul Wagh
    Thanks Josh for the kind support.This link gives me good insight into my application. I think i can go with the PE4257 as i need SPDT switch. But i still want to look on some of the alternatives which can give me cheaper solutions. Can you suggest any literature on how to select RF switch and the...
    on Feb 11, 2013
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