Question

[amouly]

There is a way to control the servo throw the Raspberry GPIO, without a servo controller board?.

I mean, when you call:

pwm.export(0, 24,....), the "0" represents the "local" board?.

I'm learning about pwm on Raspberry, sorry for this question.

Nice library btw, thanks.

[djdeath]

Hi,

I'm not really familiar with the Raspberry, I mostly used this on an Intel Galileo board.
As far as I remember, the pins are identified by 2 numbers, but that might be something specific to the Intel board, the way the pin as muxed...

The library is just wrapper around reading/writing in /sys, so hopefully you can find some answers by digging into that directory.

[rzr]

1st arg is chip id, 2d is pwm id...
I am afraid GPIO muxing is missing from this lib, may I open a ticket.

For the record on edison, I had to enable GPIO before using PWM:

chip=0
id=0
gpio=12
echo $gpio | sudo tee /sys/class/gpio/export
echo out | sudo tee /sys/class/gpio/gpio$gpio/direction
echo 0 | sudo tee /sys/class/gpio/gpio$gpio/value
sudo cat /sys/kernel/debug/gpio_debug/gpio$gpio/current_pinmux # mode0
echo mode1 | sudo tee /sys/kernel/debug/gpio_debug/gpio${gpio}/current_pinmux

Last item, it would be nice to align to iotjs API:
https://github.com/pando-project/iotjs/blob/master/docs/api/IoT.js-API-PWM.md

Relate-to: EnotionZ/gpio#60

[djdeath]

Sorry, I haven't used this in a few years and I'm unlikely to fix anything.
Feel free to fork/clone :)

[rzr]

Yes, I noticed there isnt lot of activity going on

It look like there are still users:
https://www.npmjs.com/package/pwm

If orphaned it can be transferred to:
http://abandonware.github.io/

Relate-to: abandonware/abandonware.github.io#5