LizardLad_1
Posts: 15
Joined: Sat Jan 13, 2018 12:29 am

PWM on Pi 3?

Mon Jan 22, 2018 6:37 am

Is it possible to drive a servo in bare metal C using whatever pins are connected to hardware PWM? and if so how do I set the pins into PWM mode and write data to the pins?

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joan
Posts: 12975
Joined: Thu Jul 05, 2012 5:09 pm
Location: UK

Re: PWM on Pi 3?

Mon Jan 22, 2018 8:20 am

There are plenty of C examples of talking directly to the hardware. E.g. my pigpio writes to the hardware peripheral (although the peripheral memory has been made accessible by a Linux mmap).

LizardLad_1
Posts: 15
Joined: Sat Jan 13, 2018 12:29 am

Re: PWM on Pi 3?

Mon Jan 22, 2018 8:23 am

Would you please share an example of how I could do this?

zedrummer
Posts: 33
Joined: Sun Jan 07, 2018 5:15 pm

Re: PWM on Pi 3?

Mon Jan 22, 2018 10:43 am

It seems there is something that correspond in this thread:
viewtopic.php?t=90130&start=100
Hope this helps

LizardLad_1
Posts: 15
Joined: Sat Jan 13, 2018 12:29 am

Re: PWM on Pi 3?

Wed Jan 24, 2018 7:05 am

The Circle environment is written in C++ and is very convoluted and hard to understand :?. Is there an example in C or ASM for the Pi 3?

LizardLad_1
Posts: 15
Joined: Sat Jan 13, 2018 12:29 am

Re: PWM on Pi 3?

Thu Jan 25, 2018 9:33 pm

If there are any Pi 1, 2, or zero examples that anybody has of hardware PWM please share them.

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