SIM card communication protocol

Question

My board contains an STM32 (manual here) and a SIM card reader (manual here). I need to write drivers to test that the SIM reader is working an properly communicating with the STM32. However, looking through both manuals, I couldn't find a way to get the two devices to "talk" to each other.

Is there a standard SIM card communication protocol for embedded devices? How can I do basic I/O on a SIM card?

Actually, I realise that the chapter "Smartcard" under USART covers what I want, although at no point is "SIM" mentioned. — Randomblue, Mar 26 '12 at 13:46

score 4 · Accepted Answer · answered Mar 26 '12 at 13:28

4

Smart cards come in several flavours, each with their own protocols. Here's some Arduino code to read ISO7816 T=0 cards:

http://www.makomk.com/~aidan/iso7816_interface.pde

Here's an overview of the standard:

http://www.smartcardsupply.com/Content/Cards/7816standard.htm

answered Mar 26 '12 at 13:28

Toby Jaffey

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I love standards, but I just couldn't like the Arduino :) – abdullah kahraman Mar 27 '12 at 08:50
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The Arduino is just another microcontroller dev board. It's programmable in C with GNU tools, "what's not to like?" – Toby Jaffey Mar 27 '12 at 11:25
There is nothing wrong or different with its hardware, however the software just bugs me, I do not feel in the control of the things. And I just hate the modules! I own an Arduino by the way :) – abdullah kahraman Mar 27 '12 at 12:28
Quick question. What is the difference between `.pde` and `.c` files? – Randomblue Apr 25 '12 at 12:43
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A .pde file is an Arduino sketch. A sketch is C++ to which the IDE automatically adds a header and footer to provide main() and initialisation code. – Toby Jaffey Apr 25 '12 at 13:04

Curd · Answer 2 · 2017-01-25T10:39:31.870

4

You can get the official ETSI specification here (Downloads).

The particular specification that is interesting for you is
ETSI TS 102 221 "Smart Cards; UICC-Terminal interface; Physical and logical characteristics"

Although the spec mentions both protocols "T=0" and "T=1" it is very likely that you only need "T=0" if you use only SIM cards (no banking cards etc.).

edited Jan 25 '17 at 10:39

answered Mar 27 '12 at 08:45

Curd

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SIM card communication protocol

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