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Diffstat (limited to 'metawatch.cpp')
| -rw-r--r-- | metawatch.cpp | 409 |
1 files changed, 409 insertions, 0 deletions
diff --git a/metawatch.cpp b/metawatch.cpp new file mode 100644 index 0000000..d523e1c --- /dev/null +++ b/metawatch.cpp @@ -0,0 +1,409 @@ +#include <QtCore/QDebug> +#include <QtCore/QDateTime> + +#include "metawatchpaintengine.h" +#include "metawatch.h" + +using namespace sowatch; +QTM_USE_NAMESPACE + +#define SINGLE_LINE_UPDATE 0 + +const quint8 MetaWatch::bitRevTable[16] = { + 0, 8, 4, 12, 2, 10, 6, 14, 1, 9, 5, 13, 3, 11, 7, 15 +}; + +const quint16 MetaWatch::crcTable[256] = { + 0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7, + 0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef, + 0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6, + 0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de, + 0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485, + 0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d, + 0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4, + 0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc, + 0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823, + 0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b, + 0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12, + 0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a, + 0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41, + 0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49, + 0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70, + 0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78, + 0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f, + 0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067, + 0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e, + 0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256, + 0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d, + 0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405, + 0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c, + 0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634, + 0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab, + 0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3, + 0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a, + 0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92, + 0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9, + 0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1, + 0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8, + 0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0 +}; + +#if 0 /* This snippet was used to build the table seen above. */ + quint16 remainder; + int dividend; + quint8 bit; + + for (dividend = 0; dividend < 256; dividend++) { + remainder = dividend << 8; + for (bit = 8; bit > 0; bit--) { + if (remainder & 0x8000) { + remainder = (remainder << 1) ^ 0x1021; + } else { + remainder = (remainder << 1); + } + } + if ((dividend % 8) == 0) { + printf(",\n0x%04hx", remainder); + } else { + printf(", 0x%04hx", remainder); + } + } +#endif + +MetaWatch::MetaWatch(const QBluetoothAddress& address, QObject *parent) : + Watch(QImage(96, 96, QImage::Format_MonoLSB), parent), + _socket(new QBluetoothSocket(QBluetoothSocket::RfcommSocket)), + _sendTimer(new QTimer(this)) +{ + connect(_socket, SIGNAL(connected()), SLOT(socketConnected())); + connect(_socket, SIGNAL(disconnected()), SLOT(socketDisconnected())); + connect(_socket, SIGNAL(readyRead()), SLOT(socketData())); + connect(_socket, SIGNAL(error(QBluetoothSocket::SocketError)), + SLOT(socketError(QBluetoothSocket::SocketError))); + connect(_socket, SIGNAL(stateChanged(QBluetoothSocket::SocketState)), + SLOT(socketState(QBluetoothSocket::SocketState))); + + _sendTimer->setInterval(30); + connect(_sendTimer, SIGNAL(timeout()), SLOT(timedSend())); + + _socket->connectToService(address, 1, QIODevice::ReadWrite | QIODevice::Unbuffered); +} + +QPaintEngine* MetaWatch::paintEngine() const +{ + if (!_paintEngine) { + _paintEngine = new MetaWatchPaintEngine(const_cast<MetaWatch*>(this), + const_cast<QImage*>(&_image)); + } + + return _paintEngine; +} + +QString MetaWatch::model() const +{ + return "metawatch-digital"; +} + +bool MetaWatch::isConnected() const +{ + return _socket->state() == QBluetoothSocket::ConnectedState; +} + +bool MetaWatch::busy() const +{ + return _socket->state() != QBluetoothSocket::ConnectedState || + _toSend.size() > 20; +} + +void MetaWatch::update(const QList<QRect> &rects) +{ + if (_socket->state() != QBluetoothSocket::ConnectedState) return; + const QRect imageRect = _image.rect(); + QVector<bool> lines(_image.height(), false); + + foreach (const QRect& rect, rects) { + QRect r = rect.intersect(imageRect); + for (int i = r.top(); i <= r.bottom(); i++) { + lines[i] = true; + } + } + + updateLines(1, _image, lines); + updateDisplay(1); +} + +void MetaWatch::clear(bool white) +{ + if (_socket->state() != QBluetoothSocket::ConnectedState) return; + loadTemplate(1, white ? 1 : 0); +} + +void MetaWatch::vibrate(bool on) +{ + +} + +void MetaWatch::setDateTime(const QDateTime &dateTime) +{ + Message msg(SetRealTimeClock, QByteArray(10, 0)); + const QDate& date = dateTime.date(); + const QTime& time = dateTime.time(); + + msg.data[0] = date.year() & 0xF00; + msg.data[1] = date.year() & 0xFF; + msg.data[2] = date.month(); + msg.data[3] = date.day(); + msg.data[4] = date.dayOfWeek() - 1; + msg.data[5] = time.hour(); + msg.data[6] = time.minute(); + msg.data[7] = time.second(); + msg.data[8] = 1; + msg.data[9] = 1; + + send(msg); +} + +quint16 MetaWatch::calcCrc(const QByteArray &data, int size) +{ + quint16 remainder = 0xFFFF; + + for (int i = 0; i < size; i++) { + quint8 byte = data[i]; + byte = (bitRevTable[byte & 0xF] << 4) | bitRevTable[(byte & 0xF0) >> 4]; + remainder = crcTable[byte ^ (remainder >> 8)] ^ (remainder << 8); + } + + return remainder; +} + +quint16 MetaWatch::calcCrc(const Message& msg) +{ + QByteArray data; + const int msgSize = msg.data.size(); + + data.resize(msgSize + 4); + data[0] = 0x01; + data[1] = msgSize + 6; + data[2] = msg.type; + data[3] = msg.options; + data.replace(4, msgSize, msg.data); + + return calcCrc(data, msgSize + 4); +} + +void MetaWatch::send(const Message &msg) +{ + _toSend.enqueue(msg); + if (!_sendTimer->isActive()) { + _sendTimer->start(); + } +} + +void MetaWatch::handleMessage(const Message &msg) +{ + switch (msg.type) { + case StatusChangeEvent: + handleStatusChange(msg); + break; + case ButtonEvent: + handleButtonEvent(msg); + break; + default: + qWarning() << "Unknown message of type" << msg.type << "received"; + break; + } +} + +void MetaWatch::updateLine(int mode, const QImage& image, int line) +{ + Message msg(WriteBuffer, QByteArray(13, 0), (1 << 4) | (mode & 0xF)); + const char * scanLine = (const char *) image.constScanLine(line); + + msg.data[0] = line; + msg.data.replace(1, 12, scanLine, 12); + + send(msg); +} + +void MetaWatch::updateLines(int mode, const QImage& image, int lineA, int lineB) +{ + Message msg(WriteBuffer, QByteArray(26, 0), mode & 0xF); + const char * scanLine = (const char *) image.constScanLine(lineA); + + msg.data[0] = lineA; + msg.data.replace(1, 12, scanLine, 12); + + scanLine = (const char *) image.constScanLine(lineB); + msg.data[13] = lineB; + msg.data.replace(14, 12, scanLine, 12); + + send(msg); +} + +void MetaWatch::updateLines(int mode, const QImage& image, const QVector<bool>& lines) +{ + int lineCount = lines.count(true); + int lineA = -1; + + if (lineCount == 0) return; + + for (int line = 0; line < lines.size(); line++) { + if (lines[line]) { + lineCount--; +#if SINGLE_LINE_UPDATE + updateLine(mode, image, line); + continue; +#endif + if (lineA >= 0) { + // We have a pair of lines to send. + updateLines(mode, image, lineA, line); + lineA = -1; + } else if (lineCount > 0) { + // Still another line to send. + lineA = line; + } else { + updateLine(mode, image, line); + break; // No more lines + } + } + } +} + +void MetaWatch::configureWatchMode(int mode, int timeout, bool invert) +{ + Message msg(ConfigureMode, QByteArray(2, 0), mode & 0xF); + msg.data[0] = timeout; + msg.data[1] = invert ? 1 : 0; + send(msg); +} + +void MetaWatch::updateDisplay(int mode, bool copy) +{ + Message msg(UpdateDisplay, QByteArray(), + (copy ? 0x10 : 0) | (mode & 0xF)); + send(msg); +} + +void MetaWatch::loadTemplate(int mode, int templ) +{ + Message msg(LoadTemplate, QByteArray(1, templ), mode & 0xF); + send(msg); +} + +void MetaWatch::handleStatusChange(const Message &msg) +{ + qDebug() << "watch status changed"; +} + +void MetaWatch::handleButtonEvent(const Message &msg) +{ + if (msg.data.size() < 1) return; + quint8 button = msg.data[0]; + + emit buttonPressed(button); // TODO This is completely broken +} + +void MetaWatch::socketConnected() +{ + qDebug() << "connected"; + _partialReceived.type = NoMessage; + _partialReceived.data.clear(); + _buttonState = 0; + setDateTime(QDateTime::currentDateTime()); + configureWatchMode(1); + emit connected(); +} + +void MetaWatch::socketDisconnected() +{ + _toSend.clear(); + _sendTimer->stop(); + emit disconnected(); +} + +void MetaWatch::socketData() +{ + qint64 dataRead; + + if (_partialReceived.type == 0) { + if (_socket->bytesAvailable() < 4) return; /* Wait for more. */ + char header[4]; + + dataRead = _socket->read(header, 4); + if (dataRead < 4 || header[0] != 0x01) { + qWarning() << "TODO: Resync/Handle Garbage"; + return; + } + + _partialReceived.type = static_cast<MessageType>(header[2]); + _partialReceived.data.resize(header[1] - 6); + _partialReceived.options = header[3]; + } + if (_socket->bytesAvailable() < _partialReceived.data.size() + 2) { + return; /* Wait for more. */ + } + dataRead = _socket->read(_partialReceived.data.data(), _partialReceived.data.size()); + if (dataRead < _partialReceived.data.size()) { + qWarning() << "Short read"; + return; + } + + char tail[2]; + dataRead = _socket->read(tail, 2); + if (dataRead < 2) { + qWarning() << "Short read"; + return; + } + + quint16 realCrc = calcCrc(_partialReceived); + quint16 expectedCrc = tail[1] << 8 | (tail[0] & 0xFFU); + if (realCrc == expectedCrc) { + handleMessage(_partialReceived); + } else { + qWarning() << "CRC error?"; + } + + _partialReceived.data.clear(); + _partialReceived.type = NoMessage; +} + +void MetaWatch::socketError(QBluetoothSocket::SocketError error) +{ + qWarning() << "Socket error:" << error; +} + +void MetaWatch::socketState(QBluetoothSocket::SocketState error) +{ + qDebug() << "socket is in" << error; +} + +void MetaWatch::timedSend() +{ + if (_toSend.count() > 0) { + realSend(_toSend.dequeue()); + } + if (_toSend.count() == 0) { + _sendTimer->stop(); + } +} + +void MetaWatch::realSend(const Message &msg) +{ + const int msgSize = msg.data.size(); + QByteArray data; + quint16 crc; + + data.resize(msgSize + 6); + data[0] = 0x01; + data[1] = msgSize + 6; + data[2] = msg.type; + data[3] = msg.options; + data.replace(4, msgSize, msg.data); + crc = calcCrc(data, msgSize + 4); + data[msgSize+4] = crc & 0xFF; + data[msgSize+5] = crc >> 8; + + //qDebug() << "Sending" << data.toHex(); + + _socket->write(data); +} |