CS P5 I0 Configure 5th digital pin for input without pull-up resistor. DG P5 Get the digital value of 5th digital pin. CE P9 OP Configure 9th digital pin for PWM output and store the configuration ...

Fortunately the Arduino UNO R4 provides some easy to use PwmOut class which provides more flexibility: The period needs to be defined in microseconds, so if you want to request a defined frequency in ...