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Old 05-24-2009, 10:29 AM   #1
stf92
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How to make a free running counter resetable by pressing a key.


Linux kernel 2.16

Hi:
Let clk be the counter. clk is always counting but, when I press a keyboard key it resets itself and starts over from zero. I go to make a coffee and, when coming back and begin typing again, if I also
have variable clk_old, I can know how much time I spent in the kitchen. Ok. The program is almost done but:
1) Can this be done by a script? If so, I'd need the whole script. I not:
2) Is there a signal that interrupts every, say 1s?
3) Please consider I'm new both to linux and to C. In another environment, this would seem a pretty simple program
for me to write.

The only concern, I think, is how to catch the signal and write the handler (only the body). Thanks for reading.
 
Old 05-24-2009, 10:31 AM   #2
fpmurphy
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This sounds like homework
 
Old 05-24-2009, 10:33 AM   #3
stf92
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I forgot. Compiler: gcc (GCC) 4.1.2.
 
Old 05-24-2009, 10:39 AM   #4
stf92
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Beleave me. I'm not. I program since a youngster. Thanks for
reading.
 
Old 05-24-2009, 10:41 AM   #5
H_TeXMeX_H
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It's possible to do with a script, likely with awk:
http://www.grymoire.com/Unix/Awk.html#uh-50
 
Old 05-24-2009, 10:46 AM   #6
stf92
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Thanks a lot. It's first thing I want do with linux, learning scripts, since I've seen i go nowhere without understanding them. There's also the other alternative. Isolate one self in the language, and all between the compiler and os. Thanks again.
 
  


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