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package com.diozero.internal.provider;
/*
* #%L
* Organisation: diozero
* Project: Device I/O Zero - Core
* Filename: I2CDeviceFactoryInterface.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 - 2020 diozero
* %%
* 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.util.RuntimeIOException;
public interface I2CDeviceFactoryInterface extends DeviceFactoryInterface {
static final String I2C_PREFIX = "-I2C-";
default I2CDeviceInterface provisionI2CDevice(int controller, int address, int addressSize, int clockFrequency)
throws RuntimeIOException {
String key = createI2CKey(controller, address);
// Check if this pin is already provisioned
if (isDeviceOpened(key)) {
throw new DeviceAlreadyOpenedException("Device " + key + " is already in use");
}
I2CDeviceInterface device = createI2CDevice(key, controller, address, addressSize, clockFrequency);
deviceOpened(device);
return device;
}
I2CDeviceInterface createI2CDevice(String key, int controller, int address, int addressSize, int clockFrequency)
throws RuntimeIOException;
static String createI2CKey(String keyPrefix, int controller, int address) {
return keyPrefix + I2C_PREFIX + controller + "-0x" + Integer.toHexString(address);
}
}
