diff options
Diffstat (limited to 'src/nfc/qnearfieldtarget.cpp')
| -rw-r--r-- | src/nfc/qnearfieldtarget.cpp | 87 |
1 files changed, 66 insertions, 21 deletions
diff --git a/src/nfc/qnearfieldtarget.cpp b/src/nfc/qnearfieldtarget.cpp index 509160c1..e642824b 100644 --- a/src/nfc/qnearfieldtarget.cpp +++ b/src/nfc/qnearfieldtarget.cpp @@ -111,7 +111,7 @@ QT_BEGIN_NAMESPACE /*! \enum QNearFieldTarget::Error - This enum describes the error codes that that a near field target reports. + This enum describes the error codes that a near field target reports. \value NoError No error has occurred. \value UnknownError An unidentified error occurred. @@ -123,17 +123,10 @@ QT_BEGIN_NAMESPACE \value InvalidParametersError Invalid parameters were passed to a tag type specific function. \value NdefReadError Failed to read NDEF messages from the target. \value NdefWriteError Failed to write NDEF messages to the target. + \value CommandError Failed to send a command to the target. */ -// Copied from qbytearray.cpp -// Modified to initialize the crc with 0x6363 instead of 0xffff and to not invert the final result. -static const quint16 crc_tbl[16] = { - 0x0000, 0x1081, 0x2102, 0x3183, - 0x4204, 0x5285, 0x6306, 0x7387, - 0x8408, 0x9489, 0xa50a, 0xb58b, - 0xc60c, 0xd68d, 0xe70e, 0xf78f -}; - +#if QT_DEPRECATED_SINCE(5, 9) /*! \relates QNearFieldTarget @@ -141,17 +134,9 @@ static const quint16 crc_tbl[16] = { */ quint16 qNfcChecksum(const char *data, uint len) { - quint16 crc = 0x6363; - uchar c; - const uchar *p = reinterpret_cast<const uchar *>(data); - while (len--) { - c = *p++; - crc = ((crc >> 4) & 0x0fff) ^ crc_tbl[((crc ^ c) & 15)]; - c >>= 4; - crc = ((crc >> 4) & 0x0fff) ^ crc_tbl[((crc ^ c) & 15)]; - } - return crc; + return qChecksum(data, len, Qt::ChecksumItuV41); } +#endif /*! \fn void QNearFieldTarget::disconnected() @@ -276,7 +261,7 @@ QNearFieldTarget::RequestId &QNearFieldTarget::RequestId::operator=(const Reques Constructs a new near field target with \a parent. */ QNearFieldTarget::QNearFieldTarget(QObject *parent) -: QObject(parent), d_ptr(new QNearFieldTargetPrivate) +: QObject(parent), d_ptr(new QNearFieldTargetPrivate(this)) { qRegisterMetaType<QNearFieldTarget::RequestId>(); qRegisterMetaType<QNearFieldTarget::Error>(); @@ -318,6 +303,53 @@ QUrl QNearFieldTarget::url() const */ /*! + \since 5.9 + + Returns true if this feature is enabled. + + \sa setKeepConnection(), disconnect() +*/ +bool QNearFieldTarget::keepConnection() const +{ + return d_ptr->keepConnection(); +} + +/*! + \since 5.9 + + Preserves the connection to the target device after processing a command or + reading/writing NDEF messages if \a isPersistent is \c true. + By default, this behavior is not enabled. + + Returns \c true if enabling this feature was successful. A possible + reason for a failure is the lack of support on the used platform. + + Enabling this feature requires to use the disconnect() function too, to close the + connection manually and enable communication with the target from a different instance. + Disabling this feature will also close an open connection. + + \sa keepConnection(), disconnect() +*/ +bool QNearFieldTarget::setKeepConnection(bool isPersistent) +{ + return d_ptr->setKeepConnection(isPersistent); +} + +/*! + \since 5.9 + + Closes the connection to the target. + + Returns true only if an existing connection was successfully closed. + + \sa keepConnection(), setKeepConnection() +*/ +bool QNearFieldTarget::disconnect() +{ + return d_ptr->disconnect(); +} + +/*! Returns true if the target is processing commands; otherwise returns false. */ bool QNearFieldTarget::isProcessingCommand() const @@ -364,6 +396,19 @@ QNearFieldTarget::RequestId QNearFieldTarget::writeNdefMessages(const QList<QNde } /*! + \since 5.9 + + Returns the maximum number of bytes that can be sent with sendCommand. 0 will + be returned if the target does not support sending tag type specific commands. + + \sa sendCommand(), sendCommands() +*/ +int QNearFieldTarget::maxCommandLength() const +{ + return d_ptr->maxCommandLength(); +} + +/*! Sends \a command to the near field target. Returns a request id which can be used to track the completion status of the request. An invalid request id will be returned if the target does not support sending tag type specific commands. |