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software pwm for pic16f73

 
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whung john
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software pwm for pic16f73
PostPosted: Fri Jul 06, 2007 12:18 am     Reply with quote
hi! everybody my friends.
i have a question for software pwm.
i think make a 20kHZ software pwm .and i can control motor.
please everybody can teach me.
thanks u.
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Fri Jul 06, 2007 12:18 pm     Reply with quote
You can't do 20 KHz software PWM with enough resolution to be useful
(at least with the normal method of using a Timer interrupt).

Your PIC has two hardware PWM modules (CCP1 and CCP2). You should
use one of those to do your 20 KHz PWM.
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