importcom.pi4j.wiringpi.Gpio;//导入方法依赖的package包/类privatevoidsetHardwarePwmFrequency(intpwmFrequency){// TODO Validate the requested PWM frequencyhardwarePwmRange = DEFAULT_HARDWARE_PWM_RANGE; Gpio.pwmSetRange(hardwarePwmRange);intdivisor = PI_PWM_CLOCK_BASE_FREQUENCY / hardwarePwmRange / pwm...