com.diozero.internal.provider.PwmOutputDeviceFactoryInterface Maven / Gradle / Ivy
package com.diozero.internal.provider;
/*
* #%L
* Organisation: mattjlewis
* Project: Device I/O Zero - Core
* Filename: PwmOutputDeviceFactoryInterface.java
*
* This file is part of the diozero project. More information about this project
* can be found at http://www.diozero.com/
* %%
* Copyright (C) 2016 - 2017 mattjlewis
* %%
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
* #L%
*/
import com.diozero.api.DeviceAlreadyOpenedException;
import com.diozero.api.DeviceMode;
import com.diozero.api.InvalidModeException;
import com.diozero.api.PinInfo;
import com.diozero.util.RuntimeIOException;
public interface PwmOutputDeviceFactoryInterface extends DeviceFactoryInterface {
default PwmOutputDeviceInterface provisionPwmOutputDevice(int pwmOrGpioNum, int pwmFrequency, float initialValue)
throws RuntimeIOException {
// Lookup by PWM number first, if not found or doesn't support
// PWM_OUTPUT, lookup by GPIO number
PinInfo pin_info = getBoardPinInfo().getByPwmNumber(pwmOrGpioNum);
if (pin_info == null || !pin_info.isSupported(DeviceMode.PWM_OUTPUT)) {
pin_info = getBoardPinInfo().getByGpioNumber(pwmOrGpioNum);
}
if (pin_info != null
&& (pin_info.isSupported(DeviceMode.PWM_OUTPUT) || pin_info.isSupported(DeviceMode.DIGITAL_OUTPUT))) {
// Ok
} else {
throw new InvalidModeException("Invalid mode (PWM output) for GPIO " + pwmOrGpioNum);
}
String key = createPinKey(pin_info);
// Check if this pin is already provisioned
if (isDeviceOpened(key)) {
throw new DeviceAlreadyOpenedException("Device " + key + " is already in use");
}
PwmOutputDeviceInterface device = createPwmOutputDevice(key, pin_info, pwmFrequency, initialValue);
deviceOpened(device);
return device;
}
int getBoardPwmFrequency();
void setBoardPwmFrequency(int pwmFrequency);
PwmOutputDeviceInterface createPwmOutputDevice(String key, PinInfo pinInfo, int pwmFrequency, float initialValue);
}