Contributions to OpenBSD
Note: I left the OpenBSD project and joined The NetBSD Project. See my list of NetBSD contributions. read more
View ArticleDecoding the DCF77 and HBG Time Signal Stations Using OpenBSD
Marc Balmer , The OpenBSD Project Copyright (C) 2006 Marc Balmer Every computer is equipped with at least a clock chip or a general purpose device to provide a timer function. While these timers are...
View ArticleSimulating GPIO Pins
I am currently writing a control and monitoring software system that makes use of GPIO pins. Since I was at the CCC congress in Berlin I did only have my laptop and no real GPIO hardware... With only a...
View ArticleSupport for the Meinberg Standard Time String: msts(4)
A while ago, Maurice Janssen (maurice@z74.net) sent me a modification of the nmea(4) line discipline to support the Meinberg Standard Time String format. With only a few changes, nmea(4) was turned...
View Articleldattach(8), a new command to attach line disciplines to a tty
Line disciplines have been in Unix since a long time. While they are not device drivers, they interact with tty devices in a very peculiar manner: They attach to a tty device and can then look at, or...
View ArticleWhen seekdir() Won't Seek to the Right Position
The other day, I got an email from Edd, an OpenBSD user, claiming that Samba would crash when serving files off an MS-DOS filesystem. This was Samba built from sources and not the one from ports. Since...
View ArticleNetBSD's GPIO Revisited
I reworked the GPIO framework in OpenBSD last fall. Now I have taken my work to NetBSD and updated their GPIO implementation. While there, I corrected some mistakes made in the OpenBSD implementation...
View Article