com.diozero.devices.sandpit.SevenSegmentDisplay Maven / Gradle / Ivy
package com.diozero.devices.sandpit;
/*-
* #%L
* Organisation: diozero
* Project: diozero - Core
* Filename: SevenSegmentDisplay.java
*
* This file is part of the diozero project. More information about this project
* can be found at https://www.diozero.com/.
* %%
* Copyright (C) 2016 - 2021 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 java.util.Arrays;
import com.diozero.api.DeviceInterface;
import com.diozero.api.DigitalOutputDevice;
import com.diozero.internal.spi.GpioDeviceFactoryInterface;
import com.diozero.sbc.DeviceFactoryHelper;
/**
*
* Multi-digit 7-segment display. Tested with this Luckylight
* model from Pimoroni.
*
*
*
* Segments are assumed to be connected in the following order. Note decimal
* point (DP) and colon (Col) not yet implemented.
*
*
*
* A
* F B Col
* G
* E C Col
* D DP
*
*/
public class SevenSegmentDisplay implements DeviceInterface {
private static final boolean[][] NUMBERS = { //
{ true, true, true, true, true, true, false }, // 0
{ false, true, true, false, false, false, false }, // 1
{ true, true, false, true, true, false, true }, // 2
{ true, true, true, true, false, false, true }, // 3
{ false, true, true, false, false, true, true }, // 4
{ true, false, true, true, false, true, true }, // 5
{ true, false, true, true, true, true, true }, // 6
{ true, true, true, false, false, false, false }, // 7
{ true, true, true, true, true, true, true }, // 8
{ true, true, true, true, false, true, true }, // 9
};
private DigitalOutputDevice[] segments;
private DigitalOutputDevice[] digitControl;
public SevenSegmentDisplay(int aGpio, int bGpio, int cGpio, int dGpio, int eGpio, int fGpio, int gGpio,
int[] digitControlGpios) {
this(DeviceFactoryHelper.getNativeDeviceFactory(), aGpio, bGpio, cGpio, dGpio, eGpio, fGpio, gGpio,
digitControlGpios);
}
public SevenSegmentDisplay(GpioDeviceFactoryInterface deviceFactory, int aGpio, int bGpio, int cGpio, int dGpio,
int eGpio, int fGpio, int gGpio, int[] digitControlGpios) {
// TODO Include DP and Colon
segments = new DigitalOutputDevice[7];
int i = 0;
segments[i++] = new DigitalOutputDevice(deviceFactory, aGpio, true, false);
segments[i++] = new DigitalOutputDevice(deviceFactory, bGpio, true, false);
segments[i++] = new DigitalOutputDevice(deviceFactory, cGpio, true, false);
segments[i++] = new DigitalOutputDevice(deviceFactory, dGpio, true, false);
segments[i++] = new DigitalOutputDevice(deviceFactory, eGpio, true, false);
segments[i++] = new DigitalOutputDevice(deviceFactory, fGpio, true, false);
segments[i++] = new DigitalOutputDevice(deviceFactory, gGpio, true, false);
digitControl = new DigitalOutputDevice[digitControlGpios.length];
for (i = 0; i < digitControlGpios.length; i++) {
digitControl[i] = new DigitalOutputDevice(deviceFactory, digitControlGpios[i], false, false);
}
}
@Override
public void close() {
Arrays.asList(digitControl).forEach(DeviceInterface::close);
Arrays.asList(segments).forEach(DeviceInterface::close);
}
public void displayNumbers(int value, boolean[] onDigits) {
if (onDigits.length > digitControl.length) {
throw new IllegalArgumentException("Too many digits specified (" + onDigits.length
+ "), array length must be 1.." + digitControl.length);
}
if (value > NUMBERS.length - 1) {
throw new IllegalArgumentException("Invalid value " + value + " - only numbers 0..9 are supported");
}
for (int i = 0; i < digitControl.length; i++) {
digitControl[i].setOn(onDigits[i]);
}
boolean[] values = NUMBERS[value];
for (int i = 0; i < segments.length; i++) {
segments[i].setOn(values[i]);
}
}
public void enableDigit(int digit) {
for (int i = 0; i < digitControl.length; i++) {
digitControl[i].setOn(i == digit);
}
}
public void displayNumber(int value) {
if (value > NUMBERS.length - 1) {
throw new IllegalArgumentException("Invalid value " + value + " - only numbers 0..9 are supported");
}
boolean[] values = NUMBERS[value];
for (int i = 0; i < segments.length; i++) {
segments[i].setOn(values[i]);
}
}
public void display(boolean[] values) {
if (values.length != segments.length) {
throw new IllegalArgumentException(
"Invalid values array length (" + values.length + ") - must be " + segments.length);
}
for (int i = 0; i < segments.length; i++) {
segments[i].setOn(values[i]);
}
}
}