ラズベリーパイでPWMで明るさの調節が失敗する LEDPWM pwmWrite require "wiringpi.rb" pin = 5 io = WiringPi::GPIO.new io.mode(pin, OUTPUT) io.write(pin, 1) sleep(0.5) io.write(pin, 0) io.mode(pin, PWM_OUTPUT) 11.times do io.pwmWrite(pin, 1023) sleep(0.2) io.pwmWrite(pin, 600) sleep(0.2) io.pwmWrite(pin, 0) sleep(0.2) end

PWM`1`

> * **void pinMode (int pin, int mode) ;**
>

>
> This sets the mode of a pin to either **INPUT** , **OUTPUT** , or **PWM_OUTPUT**. Note that only wiringPi pin 1 (BCM_GPIO 18) supports PWM output.

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