PLUS+1 Hardware > Controllers

Output Frequency

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dlewis:
I have a customer that would like a variable output frequency from the Plus+1.  Can this be done on a PWM pin?  I know I can change the frequency on a pin as a constant, but can I do it dynamically while the program is running?

tronelec:
set a digital output and switch it with a variable timer

dlewis:
That will work well as long as the required frequency is below the loop time of the program but not when I'm up in the 4000 Hz range.

SJ Industries:
I have done it with a PWM output as an experiment. It does work, but every time the frequency is changed the output is turned off momentarily. It is not a smooth change.

dlewis:
Thanks, that's enough to tell me what I need to know.

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