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Unread 04-02-2006, 19:20
Gdeaver Gdeaver is offline
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Re: Motors and the High Port Numbers

Check me but the lower PWM ports are controlled by the master proc. the high ones are software generated by the user proc. Interrupts are almost guaranteed to affect the upper PWM ports.
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Unread 04-02-2006, 19:38
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Re: Motors and the High Port Numbers

We've had some wacky stuff happen on ports 13-16. I would recommend forgoing them altogether.
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Unread 04-02-2006, 19:41
Rick TYler Rick TYler is offline
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Re: Motors and the High Port Numbers

So, if we are using encoders, which use interrupts, to control speed on the four high PWM ports, which are interrupt-sensitive, we aren't just shooting ourselves in the foot, but actually firing an M16 on full auto directly into our arch, right?
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Unread 04-02-2006, 21:22
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Re: Motors and the High Port Numbers

Just say no to PWMS 13-16.
Never used them, never will.
They seemed like a good idea at the time...
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Unread 04-02-2006, 21:38
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Re: Motors and the High Port Numbers

We've been using pwm16...

...for camera power.
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Unread 04-02-2006, 21:39
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Re: Motors and the High Port Numbers

Quote:
Originally Posted by Alan Anderson
We've been using pwm16...

...for camera power.
Guilty
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Unread 04-02-2006, 21:43
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Re: Motors and the High Port Numbers

Quote:
Originally Posted by Alan Anderson
We've been using pwm16...

...for camera power.
I've been reading that the camera is intended to run off the backup battery. Do the PWM ports provide the right voltage for the, you know, camera?
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Unread 04-02-2006, 21:58
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Re: Motors and the High Port Numbers

The servo power on the pwm output pins comes from the backup battery.
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Unread 04-02-2006, 21:58
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Re: Motors and the High Port Numbers

If you run those pwms on interrupts, does anything go wrong?
How about high priority interrupts? Can the function run fast enough?
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