Client and backend. This class is shared: the same code is compiled into your app and into your server, so everything on this page works in both.

public final class PwmChannel

A hardware PWM channel, opened through Hardware.openPwm(int, int).

PwmChannel servo = Hardware.getInstance().openPwm(0, 0);
servo.configure(20000000L, 1500000L, true);  // 50 Hz, 1.5 ms pulse: centred

Methods

`public int getChip()`	The PWM controller number.
`public int getChannel()`	The channel within the controller.
`public void configure(long periodNanos, long dutyNanos, boolean enabled) throwsHardwareException`	Sets the period, the high time and whether the output runs.
`public void setDutyCycle(double fraction) throwsHardwareException`	Sets the duty cycle as a fraction of the current period, keeping the period and enabled state.
`public long getPeriodNanos()`	The configured period in nanoseconds, `0` before `configure(long, long, boolean)`.
`public long getDutyNanos()`	The configured high time in nanoseconds.
`public boolean isEnabled()`	`true` while the output runs.
`public void close()`	Disables the output and releases the channel.

public int getChip()

The PWM controller number.

public int getChannel()

The channel within the controller.

public void configure(long periodNanos, long dutyNanos, boolean enabled)
throws HardwareException

Sets the period, the high time and whether the output runs.

HardwareException: when the duty exceeds the period, the controller rejects the values, or the channel is closed

public void setDutyCycle(double fraction)
throws HardwareException

Sets the duty cycle as a fraction of the current period, keeping the period and enabled state.

public long getPeriodNanos()

The configured period in nanoseconds, 0 before configure(long, long, boolean).

public long getDutyNanos()

The configured high time in nanoseconds.

public boolean isEnabled()

true while the output runs.

public void close()

Disables the output and releases the channel. Closing twice is harmless.