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Breaking News:
2010-03-10 12:00
Parallel real-time on multi-core systems with mainline Linux
Several tasks simultaneously running at real-time priority no longer interfere to each other!
2010-02-22 12:00
"Latest Stable" Linux mainline real-time 2.6.31 is out!
Kernel 2.6.31.12-rt21 is our latest and greatest
2010-02-21 12:00
OSADL at the Embedded World 2010
Industry needs Open Source - Open Source meets Industry
2010-02-09 12:00
Spinlock annotations merged from the realtime tree to Linux mainline in 2.6.33
Raw spinlocks are the "real" spinlocks now
2010-02-08 12:00
Prof Eben Moglen on "GNU GPL Version 3: The Law Making Process"
International Conference on Commons, Users, Service Providers Internet (Self-)Regulation and Copyright
2009-11-23 12:00
Added a new HOWTO to the OSADL Website: Use BuildRoot to create a Linux image for QEMU
Guest Editor Bogdan Cristea tells us about rapid prototyping of an embedded system using virtualization |
Download Driver-to-Program Signal Tester
Quick HOWTO
Download the file archive backfire-0.5.tgz and type:
# tar -zxvf backfire-0.5.tgz
# cd backfire-0.5
# make
# modprobe backfire
Test the principle of the backfire driver:
# head -1 /dev/backfire
0,0
# trap "echo Got signal 7" 7
# echo 7 >/dev/backfire
Got signal 7
# head -1 /dev/backfire
1234567890,123456
Start a measurement loop to check out your kernel's signal sending performance:
# ./sendme -a -p99 -l1000000
Samples: 1000000
To: Min 0, Cur 0, Avg 1, Max 11
From: Min 2, Cur 3, Avg 3, Max 43
Some more details are given in the respective man pages backfire.4 and sendme.8.
File archive
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Utility sendme and backfire driver |
5.5 K |