Date: Tue, 8 Jun 2021 16:06:56 -0500 From: Matthew Grooms <mgrooms@shrew.net> To: freebsd-arm@freebsd.org Subject: RPI4 Hardware PWM Message-ID: <9bb7f3d1-8256-be26-ba87-90946ce1b95f@shrew.net>
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Hey All, I have a project I'm working on that depends on interfacing with a few sensor modules using both i2c and PWM. I've got the i2c devices to work correctly, but I'm not sure how to interface with the HW PWM support of the RPI4. I can see there are settings exposed via sysctl for Beaglebone systems ... https://zewaren.net/bbb-pwm.html I was hoping I'd be able to force GPIO 12 or 13 into ALT0 and set the duty values via sysctl, but that doesn't seem to be an option. Any help would be greatly appreciated. Thanks, -Matthew
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