Initial version of the Qt Sense HAT module

Change-Id: I15c9b5665e4d32e580df4878a0c26a15172c06bc
Reviewed-by: Andy Nichols <andy.nichols@theqtcompany.com>

20 files changed, 1892 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
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+.*.callgrind.out.*
+Makefile*
+*.pro.user*
+*.qmlproject.user*
+.*.swp
+*.o
+*.moc
+*.pdb
+.qmake.cache
+qrc_*.cpp
+moc_*.cpp
+.obj/
+.moc/
+mkspecs/
+lib/
+include/
+bin/
+/plugins/
+rtimulib
+.pch/
+QtSenseHat.version
+QtSenseHat.version.*
+config.log
diff --git a/.qmake.conf b/.qmake.conf
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--- /dev/null
+++ b/.qmake.conf
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+load(qt_build_config)
+MODULE_VERSION = 5.6.0
+CMAKE_MODULE_TESTS=-
diff --git a/LICENSE.GPL b/LICENSE.GPL
new file mode 100644
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--- /dev/null
+++ b/LICENSE.GPL
@@ -0,0 +1,674 @@
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+                     END OF TERMS AND CONDITIONS
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+  If you develop a new program, and you want it to be of the greatest
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+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
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+  The GNU General Public License does not permit incorporating your program
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+may consider it more useful to permit linking proprietary applications with
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diff --git a/LICENSE.LGPLv3 b/LICENSE.LGPLv3
new file mode 100644
index 0000000..8fbb743
--- /dev/null
+++ b/LICENSE.LGPLv3
@@ -0,0 +1,173 @@
+            GNU LESSER GENERAL PUBLIC LICENSE
+
+ The Qt Toolkit is Copyright (C) 2015 The Qt Company Ltd.
+ Contact: http://www.qt.io/licensing/
+
+ You may use, distribute and copy the Qt GUI Toolkit under the terms of
+ GNU Lesser General Public License version 3, which is displayed below.
+
+-------------------------------------------------------------------------
+
+            GNU LESSER GENERAL PUBLIC LICENSE
+                Version 3, 29 June 2007
+
+ Copyright © 2007 Free Software Foundation, Inc. <http://fsf.org/>
+Everyone is permitted to copy and distribute verbatim copies of this
+licensedocument, but changing it is not allowed.
+
+This version of the GNU Lesser General Public License incorporates
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+0. Additional Definitions.
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+ As used herein, “this License” refers to version 3 of the GNU Lesser
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+
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..0d932e3
--- /dev/null
+++ b/README.md
@@ -0,0 +1,61 @@
+Raspberry Pi Sense HAT support module for Qt 5
+==============================================
+
+Tested on Raspbian Jessie 2015/09/24 and Qt 5.6 as described on https://wiki.qt.io/RaspberryPi2EGLFS
+
+Sensor support is based on RTIMULib as shipped in Raspbian and https://github.com/RPi-Distro/python-sense-hat.
+
+This a true Qt module. To build, do qmake -r && make && make install. To use, add QT += sensehat.
+
+LED example:
+
+    int main(int argc, char **argv)
+    {
+        QCoreApplication app(argc, argv);
+        QSenseHatFb fb;
+        fb.setLowLight(true);
+        QPainter p(fb.paintDevice());
+        p.fillRect(QRect(QPoint(), fb.size()), Qt::black);
+        for (int i = Qt::white; i < Qt::darkYellow; ++i) {
+            p.setPen(Qt::GlobalColor(i));
+            p.drawEllipse(QPoint(4, 4), 3, 3);
+            p.drawLine(QPoint(4, 4), QPoint(7, 7));
+            sleep(1);
+        }
+        p.fillRect(QRect(QPoint(), fb.size()), Qt::black);
+        return 0;
+    }
+
+An alternative is to run with the linuxfb platform plugin and use QRasterWindow. However,
+QSenseHatFb is handy because it automatically finds the right device, supports device
+specifics (low-light mode), functions (to some extent) without initializing QtGui, and
+allows using any platform plugin and simultaneous HDMI output.
+
+Sensors example:
+
+    int main(int argc, char **argv)
+    {
+        QCoreApplication app(argc, argv);
+        QSenseHatSensors sensors;
+        sensors.setAutoPoll(true);
+        QObject::connect(&sensors, &QSenseHatSensors::humidityChanged, [](qreal h) {
+            qDebug() << "Humidity:" << h;
+        });
+        QObject::connect(&sensors, &QSenseHatSensors::pressureChanged, [](qreal p) {
+            qDebug() << "Pressure:" << p;
+        });
+        QObject::connect(&sensors, &QSenseHatSensors::temperatureChanged, [](qreal c) {
+            qDebug() << "Temperature:" << c;
+        });
+        QObject::connect(&sensors, &QSenseHatSensors::gyroChanged, [](const QVector3D &v) {
+            qDebug() << "Gyro:" << v;
+        });
+        QObject::connect(&sensors, &QSenseHatSensors::accelerationChanged, [](const QVector3D &v) {
+            qDebug() << "Acceleration:" << v;
+        });
+        QObject::connect(&sensors, &QSenseHatSensors::compassChanged, [](const QVector3D &v) {
+            qDebug() << "Compass:" << v;
+        });
+        QTimer::singleShot(10000, &app, &QCoreApplication::quit);
+        return app.exec();
+    }
diff --git a/examples/examples.pro b/examples/examples.pro
new file mode 100644
index 0000000..c245430
--- /dev/null
+++ b/examples/examples.pro
@@ -0,0 +1,2 @@
+TEMPLATE = subdirs
+SUBDIRS += sensehat
diff --git a/examples/sensehat/leds/leds.pro b/examples/sensehat/leds/leds.pro
new file mode 100644
index 0000000..1ea81a2
--- /dev/null
+++ b/examples/sensehat/leds/leds.pro
@@ -0,0 +1,8 @@
+QT += sensehat
+
+SOURCES = main.cpp
+
+target.path = $$[QT_INSTALL_EXAMPLES]/sensehat/leds
+sources.files = $$SOURCES $$HEADERS $$RESOURCES $$FORMS leds.pro
+sources.path = $$[QT_INSTALL_EXAMPLES]/sensehat/leds
+INSTALLS += target sources
diff --git a/examples/sensehat/leds/main.cpp b/examples/sensehat/leds/main.cpp
new file mode 100644
index 0000000..36e9221
--- /dev/null
+++ b/examples/sensehat/leds/main.cpp
@@ -0,0 +1,70 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Sense Hat module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of The Qt Company Ltd nor the names of its
+**     contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QCoreApplication>
+#include <QLoggingCategory>
+#include <QSenseHatFb>
+#include <QPainter>
+#include <unistd.h>
+
+int main(int argc, char **argv)
+{
+    QLoggingCategory::setFilterRules(QStringLiteral("qt.sensehat=true"));
+    QCoreApplication app(argc, argv);
+
+    QSenseHatFb fb;
+    qDebug("Framebuffer valid = %d", fb.isValid());
+    if (!fb.isValid())
+        return 1;
+
+    fb.setLowLight(true);
+
+    QPainter p(fb.paintDevice());
+    p.fillRect(QRect(QPoint(), fb.size()), Qt::black);
+    for (int i = Qt::white; i < Qt::darkYellow; ++i) {
+        p.setPen(Qt::GlobalColor(i));
+        p.drawEllipse(QPoint(4, 4), 3, 3);
+        p.drawLine(QPoint(4, 4), QPoint(7, 7));
+        sleep(1);
+    }
+
+    p.fillRect(QRect(QPoint(), fb.size()), Qt::black);
+    return 0;
+}
diff --git a/examples/sensehat/sensehat.pro b/examples/sensehat/sensehat.pro
new file mode 100644
index 0000000..f600c82
--- /dev/null
+++ b/examples/sensehat/sensehat.pro
@@ -0,0 +1,2 @@
+TEMPLATE = subdirs
+SUBDIRS += leds sensors
diff --git a/examples/sensehat/sensors/main.cpp b/examples/sensehat/sensors/main.cpp
new file mode 100644
index 0000000..f2c6399
--- /dev/null
+++ b/examples/sensehat/sensors/main.cpp
@@ -0,0 +1,77 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Sense Hat module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of The Qt Company Ltd nor the names of its
+**     contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QCoreApplication>
+#include <QLoggingCategory>
+#include <QTimer>
+#include <QSenseHatSensors>
+#include <unistd.h>
+
+int main(int argc, char **argv)
+{
+    QLoggingCategory::setFilterRules(QStringLiteral("qt.sensehat=true"));
+    QCoreApplication app(argc, argv);
+
+    QSenseHatSensors sensors;
+    sensors.setAutoPoll(true);
+
+    QObject::connect(&sensors, &QSenseHatSensors::humidityChanged, [](qreal h) {
+        qDebug() << "Humidity:" << h;
+    });
+    QObject::connect(&sensors, &QSenseHatSensors::pressureChanged, [](qreal p) {
+        qDebug() << "Pressure:" << p;
+    });
+    QObject::connect(&sensors, &QSenseHatSensors::temperatureChanged, [](qreal c) {
+        qDebug() << "Temperature:" << c;
+    });
+    QObject::connect(&sensors, &QSenseHatSensors::gyroChanged, [](const QVector3D &v) {
+        qDebug() << "Gyro:" << v;
+    });
+    QObject::connect(&sensors, &QSenseHatSensors::accelerationChanged, [](const QVector3D &v) {
+        qDebug() << "Acceleration:" << v;
+    });
+    QObject::connect(&sensors, &QSenseHatSensors::compassChanged, [](const QVector3D &v) {
+        qDebug() << "Compass:" << v;
+    });
+
+    QTimer::singleShot(10000, &app, &QCoreApplication::quit);
+
+    return app.exec();
+}
diff --git a/examples/sensehat/sensors/sensors.pro b/examples/sensehat/sensors/sensors.pro
new file mode 100644
index 0000000..fea45b6
--- /dev/null
+++ b/examples/sensehat/sensors/sensors.pro
@@ -0,0 +1,9 @@
+QT += sensehat
+CONFIG += c++11
+
+SOURCES = main.cpp
+
+target.path = $$[QT_INSTALL_EXAMPLES]/sensehat/sensors
+sources.files = $$SOURCES $$HEADERS $$RESOURCES $$FORMS sensors.pro
+sources.path = $$[QT_INSTALL_EXAMPLES]/sensehat/sensors
+INSTALLS += target sources
diff --git a/sensehatqt.pro b/sensehatqt.pro
new file mode 100644
index 0000000..a20587f
--- /dev/null
+++ b/sensehatqt.pro
@@ -0,0 +1,9 @@
+load(configure)
+qtCompileTest(rtimulib)
+
+load(qt_parts)
+
+!config_rtimulib {
+    warning("RTIMULib not found. Make sure the sense-hat and librtimulib-dev packages are installed.")
+    SUBDIRS =
+}
diff --git a/src/sensehat/qsenseglobal.h b/src/sensehat/qsenseglobal.h
new file mode 100644
index 0000000..5b6cc6e
--- /dev/null
+++ b/src/sensehat/qsenseglobal.h
@@ -0,0 +1,52 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt Sense HAT module
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSENSEGLOBAL_H
+#define QSENSEGLOBAL_H
+
+#include <QtCore/qglobal.h>
+
+QT_BEGIN_NAMESPACE
+
+#if defined(QSENSEHAT_BUILD_LIB)
+#define QSENSEHAT_EXPORT Q_DECL_EXPORT
+#else
+#define QSENSEHAT_EXPORT Q_DECL_IMPORT
+#endif
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/sensehat/qsensehatfb.cpp b/src/sensehat/qsensehatfb.cpp
new file mode 100644
index 0000000..14d1d26
--- /dev/null
+++ b/src/sensehat/qsensehatfb.cpp
@@ -0,0 +1,231 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt Sense HAT module
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qsensehatfb.h"
+#include <private/qcore_unix_p.h>
+#include <QtCore/QLoggingCategory>
+#include <QtGui/QImage>
+#include <linux/fb.h>
+#include <sys/mman.h>
+
+QT_BEGIN_NAMESPACE
+
+Q_LOGGING_CATEGORY(qLcSH, "qt.sensehat")
+
+static const int RESET_GAMMA = 0xF102;
+
+class QSenseHatFbPrivate
+{
+public:
+    QSenseHatFbPrivate(QSenseHatFb *q_ptr) : q(q_ptr) { }
+    ~QSenseHatFbPrivate();
+
+    void open(const QString &framebufferDevice);
+
+    QSenseHatFb *q;
+    int fd = -1;
+    QRect geometry;
+    int depth = 0;
+    int stride = 0;
+    int memSize = 0;
+    int memOffset = 0;
+    bool isBGR = false;
+    QImage image;
+};
+
+void QSenseHatFbPrivate::open(const QString &framebufferDevice)
+{
+    QByteArray fn;
+    if (framebufferDevice.isEmpty()) {
+        for (int i = 0; i < 4; ++i) {
+            QByteArray candidate = QString(QStringLiteral("/sys/class/graphics/fb%1")).arg(i).toUtf8();
+            QByteArray buf;
+            buf.resize(1024);
+            ssize_t len = readlink(candidate.constData(), buf.data(), buf.size());
+            if (len > 0) {
+                if (QByteArray(buf, len).contains(QByteArrayLiteral("rpi-sense-fb"))) {
+                    fn = QString(QStringLiteral("/dev/fb%1")).arg(i).toUtf8();
+                    break;
+                }
+            } else {
+                break;
+            }
+        }
+    } else {
+        fn = framebufferDevice.toUtf8();
+    }
+
+    qCDebug(qLcSH, "Framebuffer device is %s", fn.constData());
+
+    fd = QT_OPEN(fn.constData(), O_RDWR);
+    if (fd == -1) {
+        qErrnoWarning(errno, "Failed to open %s", fn.constData());
+        return;
+    }
+
+    fb_fix_screeninfo finfo;
+    fb_var_screeninfo vinfo;
+    memset(&vinfo, 0, sizeof(vinfo));
+    memset(&finfo, 0, sizeof(finfo));
+    if (ioctl(fd, FBIOGET_FSCREENINFO, &finfo)) {
+        qErrnoWarning(errno, "Error reading fixed fb information");
+        return;
+    }
+    if (ioctl(fd, FBIOGET_VSCREENINFO, &vinfo)) {
+        qErrnoWarning(errno, "Error reading variable fb information");
+        return;
+    }
+
+    geometry = QRect(vinfo.xoffset, vinfo.yoffset, vinfo.xres, vinfo.yres);
+    depth = vinfo.bits_per_pixel;
+    stride = finfo.line_length;
+    memSize = finfo.smem_len;
+    qCDebug(qLcSH) << "Geometry is" << geometry << "Depth" << depth
+                   << "Stride" << stride << "Mem size" << memSize;
+
+    QImage::Format format = QImage::Format_Invalid;
+    const fb_bitfield rgba[4] = { vinfo.red, vinfo.green, vinfo.blue, vinfo.transp };
+    switch (depth) {
+    case 16: {
+        const fb_bitfield rgb565[4] = {{11, 5, 0}, {5, 6, 0},
+                                       {0, 5, 0}, {0, 0, 0}};
+        const fb_bitfield bgr565[4] = {{0, 5, 0}, {5, 6, 0},
+                                       {11, 5, 0}, {0, 0, 0}};
+        if (memcmp(rgba, rgb565, 3 * sizeof(fb_bitfield)) == 0) {
+            // This is pretty much what we will always hit with the Sense HAT.
+            format = QImage::Format_RGB16;
+        } else if (memcmp(rgba, bgr565, 3 * sizeof(fb_bitfield)) == 0) {
+            format = QImage::Format_RGB16;
+            isBGR = true;
+        }
+        break;
+    }
+    case 24: {
+        const fb_bitfield rgb888[4] = {{16, 8, 0}, {8, 8, 0},
+                                       {0, 8, 0}, {0, 0, 0}};
+        const fb_bitfield bgr888[4] = {{0, 8, 0}, {8, 8, 0},
+                                       {16, 8, 0}, {0, 0, 0}};
+        if (memcmp(rgba, rgb888, 3 * sizeof(fb_bitfield)) == 0) {
+            format = QImage::Format_RGB888;
+        } else if (memcmp(rgba, bgr888, 3 * sizeof(fb_bitfield)) == 0) {
+            format = QImage::Format_RGB888;
+            isBGR = true;
+        }
+        break;
+    }
+    case 32: {
+        const fb_bitfield argb8888[4] = {{16, 8, 0}, {8, 8, 0},
+                                         {0, 8, 0}, {24, 8, 0}};
+        const fb_bitfield abgr8888[4] = {{0, 8, 0}, {8, 8, 0},
+                                         {16, 8, 0}, {24, 8, 0}};
+        if (memcmp(rgba, argb8888, 4 * sizeof(fb_bitfield)) == 0) {
+            format = QImage::Format_ARGB32;
+        } else if (memcmp(rgba, argb8888, 3 * sizeof(fb_bitfield)) == 0) {
+            format = QImage::Format_RGB32;
+        } else if (memcmp(rgba, abgr8888, 3 * sizeof(fb_bitfield)) == 0) {
+            format = QImage::Format_RGB32;
+            isBGR = true;
+        }
+        break;
+    }
+    default:
+        qWarning("Unsupported fb format");
+        return;
+    }
+
+    qDebug(qLcSH) << "Image format" << format << "isBGR =" << isBGR;
+
+    uchar *data = static_cast<uchar *>(mmap(Q_NULLPTR, finfo.smem_len, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0));
+    if (data == MAP_FAILED) {
+        qErrnoWarning(errno, "Failed to mmap framebuffer");
+        return;
+    }
+
+    memOffset = geometry.y() * stride + geometry.x() * depth / 8;
+    data += memOffset;
+    image = QImage(data, geometry.width(), geometry.height(), stride, format);
+}
+
+QSenseHatFbPrivate::~QSenseHatFbPrivate()
+{
+    if (fd != -1) {
+        if (!image.isNull())
+            munmap(image.bits() - memOffset, memSize);
+        QT_CLOSE(fd);
+    }
+}
+
+QSenseHatFb::QSenseHatFb(const QString &framebufferDevice)
+    : d_ptr(new QSenseHatFbPrivate(this))
+{
+    d_ptr->open(framebufferDevice);
+    if (isValid())
+        setLowLight(false);
+}
+
+QSenseHatFb::~QSenseHatFb()
+{
+    delete d_ptr;
+}
+
+bool QSenseHatFb::isValid() const
+{
+    Q_D(const QSenseHatFb);
+    return !d->image.isNull();
+}
+
+QSize QSenseHatFb::size() const
+{
+    Q_D(const QSenseHatFb);
+    return d->geometry.size();
+}
+
+void QSenseHatFb::setLowLight(bool enable)
+{
+    Q_D(QSenseHatFb);
+    if (d->fd == -1)
+        return;
+
+    ioctl(d->fd, RESET_GAMMA, enable ? 1 : 0);
+}
+
+QImage *QSenseHatFb::paintDevice()
+{
+    Q_D(QSenseHatFb);
+    return &d->image;
+}
+
+QT_END_NAMESPACE
diff --git a/src/sensehat/qsensehatfb.h b/src/sensehat/qsensehatfb.h
new file mode 100644
index 0000000..fc3857e
--- /dev/null
+++ b/src/sensehat/qsensehatfb.h
@@ -0,0 +1,69 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt Sense HAT module
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSENSEHATFB_H
+#define QSENSEHATFB_H
+
+#include <QtSenseHat/qsenseglobal.h>
+#include <QtCore/QString>
+#include <QtCore/QSize>
+
+QT_BEGIN_NAMESPACE
+
+class QImage;
+class QSenseHatFbPrivate;
+
+class QSENSEHAT_EXPORT QSenseHatFb
+{
+public:
+    QSenseHatFb(const QString &framebufferDevice = QString());
+    ~QSenseHatFb();
+
+    bool isValid() const;
+    QSize size() const;
+    void setLowLight(bool enable);
+
+    QImage *paintDevice();
+
+private:
+    Q_DISABLE_COPY(QSenseHatFb)
+    Q_DECLARE_PRIVATE(QSenseHatFb)
+    QSenseHatFbPrivate *d_ptr;
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/sensehat/qsensehatsensors.cpp b/src/sensehat/qsensehatsensors.cpp
new file mode 100644
index 0000000..2ef6c9d
--- /dev/null
+++ b/src/sensehat/qsensehatsensors.cpp
@@ -0,0 +1,284 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt Sense HAT module
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qsensehatsensors.h"
+#include <QFile>
+#include <QTimer>
+#include <RTIMULib.h>
+#include <unistd.h>
+
+QT_BEGIN_NAMESPACE
+
+static const int MAX_READ_ATTEMPTS = 5;
+
+Q_DECLARE_LOGGING_CATEGORY(qLcSH)
+
+class QSenseHatSensorsPrivate
+{
+public:
+    QSenseHatSensorsPrivate(QSenseHatSensors *q_ptr, QSenseHatSensors::InitFlags flags)
+        : q(q_ptr), flags(flags) { }
+    ~QSenseHatSensorsPrivate();
+
+    void open();
+    void update(QSenseHatSensors::UpdateFlags what);
+    void report(const RTIMU_DATA &data, QSenseHatSensors::UpdateFlags what);
+
+    QSenseHatSensors *q;
+    QSenseHatSensors::InitFlags flags;
+    RTIMUSettings *settings = Q_NULLPTR;
+    RTIMU *rtimu = Q_NULLPTR;
+    bool imuInited = false;
+    int pollInterval;
+    RTHumidity *rthumidity = Q_NULLPTR;
+    bool humidityInited = false;
+    RTPressure *rtpressure = Q_NULLPTR;
+    bool pressureInited = false;
+    QTimer pollTimer;
+    QSenseHatSensors::UpdateFlags autoPollWhat;
+    bool temperatureFromHumidity = true;
+
+    qreal humidity = 0;
+    qreal pressure = 0;
+    qreal temperature = 0;
+    QVector3D gyro;
+    QVector3D acceleration;
+    QVector3D compass;
+};
+
+QSenseHatSensorsPrivate::~QSenseHatSensorsPrivate()
+{
+    delete rtpressure;
+    delete rthumidity;
+    delete rtimu;
+    delete settings;
+}
+
+void QSenseHatSensorsPrivate::open()
+{
+    const QString defaultConfig = QStringLiteral("/etc/RTIMULib.ini");
+    const QString writableConfig = QStringLiteral("RTIMULib.ini");
+
+    if (!flags.testFlag(QSenseHatSensors::DontCopyIniFile)) {
+        if (!QFile::exists(writableConfig)) {
+            qCDebug(qLcSH) << "Copying" << defaultConfig << "to" << writableConfig;
+            if (QFile::exists(defaultConfig))
+                QFile::copy(defaultConfig, writableConfig);
+            else
+                qWarning("/etc/RTIMULib.ini not found, sensors may not be functional");
+        }
+        settings = new RTIMUSettings;
+    } else {
+        settings = new RTIMUSettings("/etc", "RTIMULib");
+    }
+
+    rtimu = RTIMU::createIMU(settings);
+    pollInterval = qMax(1, rtimu->IMUGetPollInterval());
+    qCDebug(qLcSH, "IMU name %s Recommended poll interval %d ms", rtimu->IMUName(), pollInterval);
+
+    rthumidity = RTHumidity::createHumidity(settings);
+    qCDebug(qLcSH, "Humidity sensor name %s", rthumidity->humidityName());
+
+    rtpressure = RTPressure::createPressure(settings);
+    qCDebug(qLcSH, "Pressure sensor name %s", rtpressure->pressureName());
+}
+
+void QSenseHatSensorsPrivate::update(QSenseHatSensors::UpdateFlags what)
+{
+    int humFlags = QSenseHatSensors::UpdateHumidity;
+    if (temperatureFromHumidity)
+        humFlags |= QSenseHatSensors::UpdateTemperature;
+    if (what & humFlags) {
+        if (!humidityInited) {
+            humidityInited = true;
+            if (!rthumidity->humidityInit())
+                qWarning("Failed to initialize humidity sensor");
+        }
+        RTIMU_DATA data;
+        if (rthumidity->humidityRead(data))
+            report(data, what & humFlags);
+        else
+            qWarning("Failed to read humidity data");
+    }
+
+    int presFlags = QSenseHatSensors::UpdatePressure;
+    if (!temperatureFromHumidity)
+        presFlags |= QSenseHatSensors::UpdateTemperature;
+    if (what & presFlags) {
+        if (!pressureInited) {
+            pressureInited = true;
+            if (!rtpressure->pressureInit())
+                qWarning("Failed to initialize pressure sensor");
+        }
+        RTIMU_DATA data;
+        if (rtpressure->pressureRead(data))
+            report(data, what & presFlags);
+        else
+            qWarning("Failed to read pressure data");
+    }
+
+    const int imuFlags = QSenseHatSensors::UpdateGyro | QSenseHatSensors::UpdateAcceleration | QSenseHatSensors::UpdateCompass;
+    if (what & imuFlags) {
+        if (!imuInited) {
+            imuInited = true;
+            if (!rtimu->IMUInit())
+                qWarning("Failed to initialize IMU");
+        }
+        int attempts = MAX_READ_ATTEMPTS;
+        while (attempts--) {
+            if (rtimu->IMURead())
+                break;
+            usleep(pollInterval * 1000);
+        }
+        if (attempts >= 0)
+            report(rtimu->getIMUData(), what & imuFlags);
+        else
+            qWarning("Failed to read intertial measurement data");
+    }
+}
+
+void QSenseHatSensorsPrivate::report(const RTIMU_DATA &data, QSenseHatSensors::UpdateFlags what)
+{
+    if (what.testFlag(QSenseHatSensors::UpdateHumidity)) {
+        if (data.humidityValid) {
+            humidity = data.humidity;
+            emit q->humidityChanged(humidity);
+        }
+    }
+
+    if (what.testFlag(QSenseHatSensors::UpdatePressure)) {
+        if (data.pressureValid) {
+            pressure = data.pressure;
+            emit q->pressureChanged(pressure);
+        }
+    }
+
+    if (what.testFlag(QSenseHatSensors::UpdateTemperature)) {
+        if (data.temperatureValid) {
+            temperature = data.temperature;
+            emit q->temperatureChanged(temperature);
+        }
+    }
+
+    if (what.testFlag(QSenseHatSensors::UpdateGyro)) {
+        if (data.gyroValid) {
+            gyro = QVector3D(data.gyro.x(), data.gyro.y(), data.gyro.z());
+            emit q->gyroChanged(gyro);
+        }
+    }
+
+    if (what.testFlag(QSenseHatSensors::UpdateAcceleration)) {
+        if (data.accelValid) {
+            acceleration = QVector3D(data.accel.x(), data.accel.y(), data.accel.z());
+            emit q->accelerationChanged(acceleration);
+        }
+    }
+
+    if (what.testFlag(QSenseHatSensors::UpdateCompass)) {
+        if (data.compassValid) {
+            compass = QVector3D(data.compass.x(), data.compass.y(), data.compass.z());
+            emit q->compassChanged(compass);
+        }
+    }
+}
+
+QSenseHatSensors::QSenseHatSensors(InitFlags flags)
+    : d_ptr(new QSenseHatSensorsPrivate(this, flags))
+{
+    d_ptr->open();
+    d_ptr->pollTimer.setInterval(d_ptr->pollInterval);
+    connect(&d_ptr->pollTimer, &QTimer::timeout, [this] { d_ptr->update(d_ptr->autoPollWhat); });
+}
+
+QSenseHatSensors::~QSenseHatSensors()
+{
+    delete d_ptr;
+}
+
+void QSenseHatSensors::poll(UpdateFlags what)
+{
+    Q_D(QSenseHatSensors);
+    d->update(what);
+}
+
+void QSenseHatSensors::setAutoPoll(bool enable, UpdateFlags what)
+{
+    Q_D(QSenseHatSensors);
+    if (enable) {
+        d->autoPollWhat = what;
+        d->pollTimer.start();
+    } else {
+        d->pollTimer.stop();
+    }
+}
+
+qreal QSenseHatSensors::humidity() const
+{
+    Q_D(const QSenseHatSensors);
+    return d->humidity;
+}
+
+qreal QSenseHatSensors::pressure() const
+{
+    Q_D(const QSenseHatSensors);
+    return d->pressure;
+}
+
+qreal QSenseHatSensors::temperature() const
+{
+    Q_D(const QSenseHatSensors);
+    return d->temperature;
+}
+
+QVector3D QSenseHatSensors::gyro() const
+{
+    Q_D(const QSenseHatSensors);
+    return d->gyro;
+}
+
+QVector3D QSenseHatSensors::acceleration() const
+{
+    Q_D(const QSenseHatSensors);
+    return d->acceleration;
+}
+
+QVector3D QSenseHatSensors::compass() const
+{
+    Q_D(const QSenseHatSensors);
+    return d->compass;
+}
+
+QT_END_NAMESPACE
diff --git a/src/sensehat/qsensehatsensors.h b/src/sensehat/qsensehatsensors.h
new file mode 100644
index 0000000..fb1cd23
--- /dev/null
+++ b/src/sensehat/qsensehatsensors.h
@@ -0,0 +1,108 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt Sense HAT module
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSENSEHATESENSORS_H
+#define QSENSEHATESENSORS_H
+
+#include <QtSenseHat/qsenseglobal.h>
+#include <QtCore/QObject>
+#include <QtGui/QVector3D>
+
+QT_BEGIN_NAMESPACE
+
+class QImage;
+class QSenseHatSensorsPrivate;
+
+class QSENSEHAT_EXPORT QSenseHatSensors : public QObject
+{
+    Q_OBJECT
+    Q_PROPERTY(qreal humidity READ humidity NOTIFY humidityChanged)
+    Q_PROPERTY(qreal pressure READ pressure NOTIFY pressureChanged)
+    Q_PROPERTY(qreal temperature READ temperature NOTIFY temperatureChanged)
+    Q_PROPERTY(QVector3D gyro READ gyro NOTIFY gyroChanged)
+    Q_PROPERTY(QVector3D acceleration READ acceleration NOTIFY accelerationChanged)
+    Q_PROPERTY(QVector3D compass READ compass NOTIFY compassChanged)
+
+public:
+    enum InitFlag {
+        DontCopyIniFile = 0x01
+    };
+    Q_DECLARE_FLAGS(InitFlags, InitFlag)
+
+    enum UpdateFlag {
+        UpdateHumidity = 0x01,
+        UpdatePressure = 0x02,
+        UpdateTemperature = 0x04,
+        UpdateGyro = 0x08,
+        UpdateAcceleration = 0x10,
+        UpdateCompass = 0x20,
+        UpdateAll = 0xFF
+    };
+    Q_DECLARE_FLAGS(UpdateFlags, UpdateFlag)
+
+    QSenseHatSensors(InitFlags flags = 0);
+    ~QSenseHatSensors();
+
+    void poll(UpdateFlags what = UpdateAll);
+    void setAutoPoll(bool enable, UpdateFlags what = UpdateAll);
+
+    qreal humidity() const;
+    qreal pressure() const;
+    qreal temperature() const;
+    QVector3D gyro() const;
+    QVector3D acceleration() const;
+    QVector3D compass() const;
+
+signals:
+    void humidityChanged(qreal value);
+    void pressureChanged(qreal value);
+    void temperatureChanged(qreal value);
+    void gyroChanged(const QVector3D &value);
+    void accelerationChanged(const QVector3D &value);
+    void compassChanged(const QVector3D &value);
+
+private:
+    Q_DISABLE_COPY(QSenseHatSensors)
+    Q_DECLARE_PRIVATE(QSenseHatSensors)
+    QSenseHatSensorsPrivate *d_ptr;
+};
+
+Q_DECLARE_OPERATORS_FOR_FLAGS(QSenseHatSensors::InitFlags)
+Q_DECLARE_OPERATORS_FOR_FLAGS(QSenseHatSensors::UpdateFlags)
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/sensehat/sensehat.pro b/src/sensehat/sensehat.pro
new file mode 100644
index 0000000..828e37f
--- /dev/null
+++ b/src/sensehat/sensehat.pro
@@ -0,0 +1,16 @@
+TARGET = QtSenseHat
+MODULE = sensehat
+load(qt_module)
+
+QT += core-private
+CONFIG += c++11
+DEFINES += QSENSEHAT_BUILD_LIB
+
+SOURCES = qsensehatfb.cpp \
+          qsensehatsensors.cpp
+
+HEADERS = qsensehatfb.h \
+          qsensehatsensors.h \
+          qsenseglobal.h
+
+LIBS += -lRTIMULib
diff --git a/src/src.pro b/src/src.pro
new file mode 100644
index 0000000..c245430
--- /dev/null
+++ b/src/src.pro
@@ -0,0 +1,2 @@
+TEMPLATE = subdirs
+SUBDIRS += sensehat
diff --git a/sync.profile b/sync.profile
new file mode 100644
index 0000000..34546bc
--- /dev/null
+++ b/sync.profile
@@ -0,0 +1,19 @@
+%modules = ( # path to module name map
+    "QtSenseHat" => "$basedir/src/sensehat",
+);
+%moduleheaders = ( # restrict the module headers to those found in relative path
+);
+%classnames = (
+);
+%deprecatedheaders = (
+);
+# Module dependencies.
+# Every module that is required to build this module should have one entry.
+# Each of the module version specifiers can take one of the following values:
+#   - A specific Git revision.
+#   - any git symbolic ref resolvable from the module's repository (e.g. "refs/heads/master" to track master branch)
+#   - an empty string to use the same branch under test (dependencies will become "refs/heads/master" if we are in the master branch)
+#
+%dependencies = (
+    "qtbase" => "",
+);