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problem with software pwm for rc servo

 
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white



Joined: 03 Oct 2009
Posts: 1

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problem with software pwm for rc servo
PostPosted: Sat Oct 03, 2009 5:46 am     Reply with quote
hi,
I have some problem about rc servo pwm signal because
my system only have 3ms to generate pwm.
One channel pwm have 1ms~2ms high signal
but I must generate 4 channel pwm.
So, my question is how to generate 4 channel at the same time?
(Generate 4ch pwm <2ms, 4 pwm pin high in the same time, then pin low with each channel pwm value).
dbotkin



Joined: 08 Sep 2003
Posts: 197
Location: Omaha NE USA

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PostPosted: Sat Oct 03, 2009 7:14 am     Reply with quote
Just drive all 4 pins high at the same time, then drive each of them low at the proper time during the 2ms window. Where's the problem?
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