BeagleBone Black PWM
The BeagleBone Black board has eight pulse-width modulation (PWM) output pins. Each PWM pin outputs a square waveform with variable frequency and duty cycle.
The minimum PWM output frequency is
0 Hz. The maximum PWM output
A duty cycle of
0 means that the waveform is always low. A duty
1 means the waveform is always high.
To use a PWM pin, reconfigure one of the GPIO pins as a PWM pin.
Some of the internal PWMs are connected to two output pins:
EHRPWM2B. The remaining pins,
are connected to one output pin.
You cannot configure more than one output pin at a time to a given internal PWM.
The hardware produces all PWM output waveforms relative to
Several electrically equivalent pins are connected to
Do not connect a PWM output pin directly to
Grounding a PWM pin can damage the board. Insert a load resistor in
series with components such as LEDs that do not present a resistive