Op 24-08-19 om 04:26 schreef Computer Nerd Kev:
> A. Dumas  wrote:
>> Mostly proprietary SoC, Broadcom ARM version with their VideoCore GPU. I
>> have no idea what's in there, but the Pi doesn't have hardware PWM
>
> Actually it does have hardware PWM, see page 138:
>
http://www.raspberrypi.org/wp-content/uploads/2012/02/BCM2835-ARM-Peripherals.p
df
>
> But this by no means implies that they designed it to work as a DAC
> for audio output. It's also possible that the Pi doesn't actually use
> the hardware PWM function for whatever reason and does it in software
> - I haven't checked.

Oh! My bad. I guess I didn't look further after reading that Pis aren't
really suited to servo control due to timing issues with the
multitasking operating system. I think I mistakenly concluded that that
meant no hardware pwm.

Maybe the problem with servo control isn't setting the pwm signal and
letting it run without interference from system load (obviously there
shouldn't be any with hardware pwm), but varying it with precise timing.

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