Gitiles
Code Review Sign In
gerrit.osmocom.org / simtrace2 / 7ca68359f32929150295c2daa992d51a73afcbde
commit7ca68359f32929150295c2daa992d51a73afcbde[log] [tgz]
authorEric Wild <ewild@sysmocom.de>Sun Aug 08 04:14:38 2021 +0200
committerEric Wild <ewild@sysmocom.de>Sun Aug 08 04:14:38 2021 +0200
treeb5cd02184034f6bc8380202c7c7b51af20da5a86
parenta951c4ae025df33b8bc585430a20b014fc3fb695 [diff]
cardem: fix spurious NULL bytes during transfers

The "wait time extension timer" was apparently not being reset during
normal tx operations, which led to occasional NULL (0x60) bytes getting
injected into transfers, which in turn led to more tx bytes than what
the reader side expects...

The odd thing is that this was only noticeable with high baud rates,
probably due to the very long default WT of 9600 ETU, and even then only
because it led to weird ngff modem resets after benign transfers.

Change-Id: I15b0b83b7d93b8e5589f3640bd6eb2fc82f93394
Related: SYS#5553
1 file changed
tree: b5cd02184034f6bc8380202c7c7b51af20da5a86
  1. contrib/
  2. debian/
  3. firmware/
  4. hardware/
  5. host/
  6. .gitignore
  7. .gitmodules
  8. .gitreview
  9. clk_calc.py
  10. git-version-gen
  11. Makefile
  12. README.md
  13. TODO-RELEASE
README.md

SIMtrace v2.0

This is the repository for the next-generation SIMtrace devices, providing abilities to trace the communication between (U)SIM card and phone, remote (U)SIM card forward, (U)SIM man-in-the-middle, and more.

NOTE: Nothing in this repository applies to the SIMtrace v1.x hardware or its associated firmware. SIMtrace v1.x is based on a different CPU / microcontroller architecture and uses a completely different software stack and host software.

Supported Hardware

  • Osmocom SIMtrace 1.x with SAM3 controller ** this is open hardware and schematics / PCB design is published
  • sysmocom sysmoQMOD (with 4 Modems, 4 SIM slots and 2 SAM3) ** this is a proprietary device, publicly available from sysmocom
  • sysmocom OWHW (with 2 Modems and 1 SAM3 onboard) ** this is not publicly available hardware, but still supported

This Repository

This repository contains several directory

  • firmware - the firmware to run on the actual devices
  • hardware - some information related to the hardware
  • host - Programs to use on the USB host to interface with the hardware

The host software includes

  • libosmo-simtrace2 - a shared library to talk to devices running the simtrace2 firmware
  • simtrace2-list - list any USB-attached devices running simtrace2 firmware
  • simtrace2-sniff - interface the 'trace' firmware to obtain card protocol traces
  • simtrace2-cardem-pcsc - interface the 'cardem' fimrware to use a SIM in a PC/SC reader