Subject:
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Re: How2 'count' in NQC
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Newsgroups:
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lugnet.robotics
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Date:
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Sat, 4 Nov 2000 22:10:26 GMT
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Viewed:
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821 times
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I want to thank everyone who helped with the double problem of switch
de-bouncing and that loops can often count continuously while the switch is
in actuation. There were good suggestions about removing delays from the
code and 'counting' upon change-of-state. My apologies to those who find
the topic too simple. But, for those who don't, here is the final result:
//Bug6Leg5.nqc
//program to check results of a counter
#define BUMPER SENSOR_2
#define LAMP OUT_B
#define FLASH_TIME 10 //a brief flash to confirm count of 5
int counter;
void check_switch()
{
if (BUMPER == 1)//watches for actuation
{
until (BUMPER == 0); //checks de-actuation...
counter += 1; //...then increments counter
}
if (counter == 5)
{
On (LAMP);
counter = 0;
Wait (FLASH_TIME);
Off (LAMP);
}
}
task main()
{
counter = 0;
SetSensor (BUMPER, SENSOR_TOUCH);
while (true)
check_switch();
}
Thanks again, everyone. This is a great newsgroup!
Jerry
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Message is in Reply To:
 | | Re: How2 'count' in NQC
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| I have noticed this ongoing thread about the difficulties of debouncing and counting switch closures, and I must say that it is a very real problem anywhere electromechanical switches are interfaced to electronics which is orders of magnitude (...) (24 years ago, 3-Nov-00, to lugnet.robotics)
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