Sim Card

[brenda]

Hi,

Anyone knows how to read/write to Sim card using PIC?
I don't know where to start. Pls... your assistance is highly appreciated.

Brenda

[Ioannis]

I believe they work exactly as normal memory cards. They respond to the ATR (Answer to Reset). Also their connection is the same as in the memory cards. So if you have managed to work with normal memory cards you will not have any difficulty. The only problem might be the connector. I used a plastic card from an older phone and stick the SIM with self adhesive tape.

Attached you will find a program in PBP i used to read from an old Tele-Card to open a door lock. I realy do not remember the connection but it is easy to figure. If I find them I will schetch and send.

Ioannis

[mister_e]

May those help you

http://www.weethet.nl/english/smartcards_types.php

http://www.epanorama.net/links/smartcards.html

http://www.hackersrussia.ru/Cards/ASyncro/Someinfo_eng.php


regards

[Darrenmac]

Smart cards are just a micro and eeprom. A gold card is a 16f84A and an eeprom. To use the eeprom memory simply write a small routine to program into the 16f84A that allows commands to store and retrive data. Then on your pic that is using the smartcard for storage, program these commands accordingly.

[brenda]

Thanks for the reply.

Yes, I have read sometime ago that a smart card has a pic in it. but i don't know really how it works.

Ionis,
I would be greatfull if you can provide me your schematic. I try to find out the difference of mobile sim card and the smart card.

nice site mister_e

best regards,
brenda

[Darrenmac]

Hope this helps