Linux kernel driver for the Winbond 83697HF/HG watchdog

October 26th, 2006 by Samuel Tardieu

My device driver for the watchdog embedded in the Winbond 83697HF/HG SuperIO controller has been integrated into the forthcoming Linux 2.6.19 kernel. If you want to use it on a Dedibox dedicated server, you have to:

activate the option CONFIG_W83697HF_WDT in your kernel configuration file
load the module at boot time with parameter wdt_io=0×4e; creating /etc/modules.d/wdt with [...]

rforth1 optimizations

October 24th, 2006 by Samuel Tardieu

I worked a lot on rforth1 lately, a Forth compiler targetting the PIC 18f family of microcontrollers. I have added many new optimizations in order to generate smaller and more efficient code.
Let’s take an example. The Forth code below cycles through the 8 possible states of 3 leds connected to ports B5, B6 and B7 [...]

Collaborative work on deliverables

October 10th, 2006 by Samuel Tardieu

In my job, I often participate to multi-partners projects which get public (European or national) funding. In those projects, we are required to produce deliverables that show the progress of our work.
The final deliverable is edited by an editor (how surprising) who is in charge of coordinating inputs from various partners and make them consistent. [...]

Tor, plausible deniability, watchdog and seizures

September 11th, 2006 by Samuel Tardieu

It looks like the German police has recently seized some servers running the TOR anonymity program because the TOR network seems to have been used to anonymously access child pornography. While of course nobody can publicly stand up against such an action, these seizures may sever the privacy of server owners.

Sometimes, I feel like a geek

August 28th, 2006 by Samuel Tardieu

When I laugh at this joke while I’ve seen it at least a dozen times already, I wonder if I’m not a little bit geeky.

Running GNU/Linux on a Fujitsu-Siemens Lifebook S7110

August 24th, 2006 by Samuel Tardieu

I just setup a page explaining what works under Gentoo GNU/Linux on the Fujitsu-Siemens Lifebook S7110 laptop. Please let comments here for questions, remarks or enhancements.

Wiping unused space in a file system

August 23rd, 2006 by Samuel Tardieu

A perverse hacker friend of mine has written a clever yet scaring Windows utility. Each time a USB key is inserted into his computer, the whole content of the key is silently dumped and stored on the machine. It doesn’t copy the existing files; it makes an image of the key.
After that, when the unsuspecting [...]

Spread the word (and the software)

August 2nd, 2006 by Samuel Tardieu

I have a friend who knew nothing about Free Software three years ago. When she acquired a laptop, Microsoft Windows came with it, and she used it. After some time, it became slower and slower and felt very slugish, at a point where watching DVDs on it was as pleasant as looking at the TV [...]

ICFP Ada virtual machine

August 1st, 2006 by Samuel Tardieu

The ICFP contest of this year starts with the implementation of a virtual machine. While I didn’t participate to the contest itself, I wrote one in Python and rewrote another one in Ada for performance reasons. Here is its code, released in the public domain.

Mercurial: a field report

May 31st, 2006 by Samuel Tardieu

As a member of the Areabot association, I participated to the 2006 French robotics competition last week. We had to develop specific software for our robot, driven by two Shix boards containing each one a SH7750R processor at 240MHz running Linux and a Stratix EP1S25 FPGA.
We decided to use Mercurial from the beginning for our [...]


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