Saving RFID Data


Closed Thread
Results 1 to 27 of 27

Hybrid View

  1. #1


    Did you find this post helpful? Yes | No

    Default

    Hi

    No this dont work!

    My chip have the Pin E2 to VCC thats mean The Device Adress is :10101000 for Write and
    10101001 For Reading.

    I try all combination but dont work.

    Regards Pesti

  2. #2
    skimask's Avatar
    skimask Guest


    Did you find this post helpful? Yes | No

    Default

    Quote Originally Posted by Pesticida View Post
    Hi

    No this dont work!

    My chip have the Pin E2 to VCC thats mean The Device Adress is :10101000 for Write and
    10101001 For Reading.

    I try all combination but dont work.

    Regards Pesti
    Ok, is it the serial part that's not working?
    The EEPROM is returning bad data?
    Is the program running?
    Which is it?
    Think simple...build it up...
    Make the LED blink...Show some data on the LED...Make the HSEROUT work
    I know you don't have an LED here...maybe you should put one there eh?

  3. #3


    Did you find this post helpful? Yes | No

    Default

    Hi,

    im so Stupid I forgott something important ,on the Chip I forgott to set WC Low,and i use now more pause to write and to read data.
    Now is working but what i don't understand ,on the 24C02 i dont set wc too and has working!

    What you think is this a good Idea to use 24c chips to store rfid tags data,the chips have a 1000.000 write cyclus.

    When I write on one day Double (Write and Erase) I have then on one Day maybe 4 Write Cycle.

    Thank You

    Regards Pesti

  4. #4
    Join Date
    Sep 2004
    Location
    montreal, canada
    Posts
    6,898


    Did you find this post helpful? Yes | No

    Default

    depending the warranty and service you want to provide... but you could use F-RAM instead

    Quote Originally Posted by FM24C04A datasheet
    Endurance
    Internally, a FRAM operates with a read and restore
    mechanism. Therefore, endurance cycles are applied
    for each read or write cycle. The FRAM architecture
    is based on an array of rows and columns. Rows are
    defined by A8-A2. Each access causes an endurance
    cycle for a row. Endurance is virtually unlimited. At
    3000 accesses per second to the same segment, it will
    take more than 10 years to reach the endurance limit.
    not bad
    Steve

    It's not a bug, it's a random feature.
    There's no problem, only learning opportunities.

  5. #5


    Did you find this post helpful? Yes | No

    Default

    Thank You Mister_e

    The RFID Data will be stored on the 24C and then Send trough GPRS Transmitter to Central Unit.

    If all is ok the data will be Erased.

    And I have again free space for new data.

    Regards Pesti

  6. #6


    Did you find this post helpful? Yes | No

    Default

    Ok

    All work fine now but :-)

    I receive the data from rfid reader in ascii i use to receive data on the pic this:

    Serin2 PortD.0,84,[Wait("E0") ,Daten[6],Daten[5],Daten[4],Daten[3],Daten[2],Daten[1],Daten[0]]

    Daten[7] = $E0

    but when I send to pc and to LCD with this

    HSEROUT [hex2 Daten[7],hex2 Daten[6],hex2 Daten[5],hex2 Daten[4],hex2 Daten[3],hex2 Daten[2],hex2 Daten[1],hex2 Daten[0],13,10]

    Lcdout $fe,$80,hex2 Daten[7],hex2 Daten[6],hex2 Daten[5],hex2 Daten[4],hex2 Daten[3],hex2 Daten[2],hex2 Daten[1],hex2 Daten[0]

    I receive on the PC and on the LCD this : E030343031303030

    I don't have found the way to convert to hex I need Hex on PC and on LCD.

    Thanks

    Regards Pesti

  7. #7
    skimask's Avatar
    skimask Guest


    Did you find this post helpful? Yes | No

    Default

    Quote Originally Posted by Pesticida View Post
    All work fine now but :-)
    I receive the data from rfid reader in ascii i use to receive data on the pic this:
    Serin2 PortD.0,84,[Wait("E0") ,Daten[6],Daten[5],Daten[4],Daten[3],Daten[2],Daten[1],Daten[0]]
    Daten[7] = $E0
    but when I send to pc and to LCD with this
    HSEROUT [hex2 Daten[7],hex2 Daten[6],hex2 Daten[5],hex2 Daten[4],hex2 Daten[3],hex2 Daten[2],hex2 Daten[1],hex2 Daten[0],13,10]
    Lcdout $fe,$80,hex2 Daten[7],hex2 Daten[6],hex2 Daten[5],hex2 Daten[4],hex2 Daten[3],hex2 Daten[2],hex2 Daten[1],hex2 Daten[0]
    I receive on the PC and on the LCD this : E030343031303030
    I don't have found the way to convert to hex I need Hex on PC and on LCD.
    Thanks
    Regards Pesti
    Have you opened your PicBasicPro manual since you bought PicBasicPro?
    What do you think the HEX2 does FOR you?
    Take the HEX2 out of your HSEROUT and you'll get raw data.
    Last edited by skimask; - 31st January 2008 at 20:15.

Similar Threads

  1. Using Nokia LCD
    By BobP in forum mel PIC BASIC Pro
    Replies: 300
    Last Post: - 3rd May 2018, 04:47
  2. Read/Write Problem
    By Tobias in forum mel PIC BASIC Pro
    Replies: 1
    Last Post: - 10th February 2010, 01:51
  3. Big characters on HD44780 4x20
    By erpalma in forum mel PIC BASIC Pro
    Replies: 23
    Last Post: - 7th January 2007, 02:21
  4. LCD + bar graph
    By DynamoBen in forum mel PIC BASIC Pro
    Replies: 13
    Last Post: - 5th October 2005, 14:50
  5. Sinus calculating !
    By Don Mario in forum mel PIC BASIC Pro
    Replies: 29
    Last Post: - 28th November 2004, 23:56

Members who have read this thread : 0

You do not have permission to view the list of names.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts