Translations:Buzzer/4/en

The Linux kernel provides a sysfs interface to pwm that accepts a pwm frequency and a duty cycle in nanoseconds (10^-9S)! Therefore, for low-level control of the Buzzer, it is necessary to recalculate the desired frequency from kHz to a period in nanoseconds using the formula: T(ns) = 1,000,000 / f(kHz)