1.7 KiB

OpenPCD, OpenPICC and SIMtrace device firmware

This repository contains the C-language firmware of a couple of different USB devices that share nothing in common but the fact that they contain and Atmel AT91SAM7S microcontroller and that Harald Welte was involved in their development.

The OpenPCD 1.x and OpenPICC 1.x devices are pretty much obsolete these days, so SAM7S based SIMtrace 1.x is the only relevant platform these days.

Osmocom SIMtrace is a USB-attached peripheral device that is primarily used to sniff the traffic between a SIM/USIM card and a Phone or cellular modem.


The official homepage of the project is

GIT Repository

You can clone from the official openpcd.git repository using

git clone git://

There is a cgit interface at


Ther homepage (see above) contains a wiki with information as well as the SIMtrace user manual.

Mailing List

Discussions related to SIMtrace are happening on the mailing list, please see for subscription options and the list archive.

Please observe the Osmocom Mailing List Rules when posting.


Our coding standards are described at

We use accept code/patch submissions via e-mail to the above-mentioned mailing list.