Closed PhilMo6 closed 4 years ago
It sounds like the PWMs are not enabled in the kernel, in which case you'll need to enable them with a Device Tree overlay by adding a dtoverlay=pwm
or dtoverlay=pwm-2chan
kernel argument to your /boot/config.txt
. Once enabled, the channel number will be numbered incrementally from 0 (not with the pin number).
You can find a few guides online to help with the configuration, as there are several different choices of pins you can enable for PWM -- I recommend searching for dtoverlay=pwm
or dtoverlay=pwm-2chan
and Raspberry Pi.
Trying to use the pwm module and am getting this error. This is my code up to the error.
local PWM = require('periphery').PWM local pwm local success,err = pcall(function() pwm = PWM(0, 22) end) print(success,err) false Opening PWM: opening 'export': No such file or directory [errno 2]
Im using a Raspberry Pi Model B Plus Rev 1.2 running the latest Raspbian os