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Old 09-24-2010, 02:25 AM   #1
Steviepower
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Registered: May 2010
Location: Eindhoven
Distribution: ubuntu/debian
Posts: 152

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Preventing screen blank in Busybox(embedded linux) on a KERN board


Hello,

I'm trying to run a shell script on a kern board (av1100) that shows some text output on the attached screen. The big problem is that the screen goes to blank in like 2 minutes.

I'd just like to have the script showing it's output while the thing is on.

Isn't there a command to stop the screen from going to blank?

p.s. there is no bash available, just #!/bin/sh

Code:
#!/bin/sh 
###########################################################
#
#        Script
# 
#
###########################################################
COUNTER=0
while [ 1 -eq 1 ]
#following didn't work, setterm isn't available
#/usr/bin/setterm -blank 0
do
COUNTER=`expr $COUNTER + 1`
if [ $COUNTER = 20 ]
then
echo "special output"
sleep 3
COUNTER=`expr $COUNTER - $COUNTER`
fi
echo -n "continuous output"
sleep 1
done
 
Old 10-04-2010, 03:00 PM   #2
ciotog
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Registered: Mar 2004
Location: Canada
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You could try using swinput:
http://savannah.nongnu.org/projects/swinput

It can "fake" keyboard and mouse events, and so it can send a "Shift" keyboard event or some-such every once in a while. This assumes that your screen is going blank after 2 minutes of inactivity. If that's not the case, then you'll need to provide more information about your device.
 
Old 10-05-2010, 09:28 AM   #3
Steviepower
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Registered: May 2010
Location: Eindhoven
Distribution: ubuntu/debian
Posts: 152

Original Poster
Rep: Reputation: 25
thank you for your comment, I finally solved it by running xterm in x and disabling the screensaver there. this worked okay eventually!
 
  


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