Set PWM frequency

[Levi-Lesches]

As of v0.8.1, the GPIOPwm class has a dutyCycle setter, but I can't find anything to set the frequency. Are there plans to add such a feature?

I checked the native code:

rpi_gpio.dart/lib/src/native/rpi_gpio_ext.cc

Line 300 in 42cc561

pwmSetClock(32); // 19.2 / 32 = 600KHz - Also starts the PWM

Seems like this is hard-coded

[danrubel]

Good idea. Yes, this seems like something I can add in the fall.
Code contributions are most welcome as well.

[Viserion-stack]

is there any update on that?

[danrubel]

No, nothing yet.
I'm hoping to publish 1.0 soon with support for Dart 3.x,
but have not had time to work on the PWM feature at all.

[Viserion-stack]

rpi_gpio.dart/lib/src/native/rpi_gpio_ext.cc
Line 300 in 42cc561
pwmSetClock(32); // 19.2 / 32 = 600KHz - Also starts the PWM

Tried to change clock to other value but seems it now working. Basically i just want to set freq to ~50Hz but seems it's more complex than I thought. Any idea how I can reach this?

[lengyuekongliu]

Is there any new information?