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  1. Qt
  2. QTBUG-101444

QSerialPort: trouble with high baud rates / waitForReadyRead() stalls

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    • Windows
    • 8
    • 01e0371f9d (qt/tqtc-qtserialport/5.15) f3a306a30f (qt/qtserialport/dev) f3a306a30f (qt/tqtc-qtserialport/dev) b71e60fbed (qt/tqtc-qtserialport/6.2) 6d5b4b3d71 (qt/qtserialport/6.3) 0f5d0b4bb2 (qt/qtserialport/6.4) 6d5b4b3d71 (qt/tqtc-qtserialport/6.3)
    • Team A Foundation Sprint 58, Team A Foundation Sprint 59

    Description

      With sufficiently high baud rates (> 115200) it appears that the synchronous functions will stall. This problem did not occur in early 5.12 versions.

      This should be possible to reproduce with the blocking examples at https://doc.qt.io/qt-5.15/qtserialport-examples.html .

      Reported occurring with MSVC 2017. No information if it is different when other compilers are used

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          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-103822 QSerialPort::waitForReadyRead always returns false on older Windows systems

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed

          Task - A task that needs to be done. QTBUG-93865 Fix regressions in QtSerialPort after porting to alertable I/O functions on Windows

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
          mentioned in

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              ivan.solovev Ivan Solovev
              miikapernu Miika Pernu
              Vladimir Minenko Vladimir Minenko
              Alex Blasche Alex Blasche
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                Updated:
                Resolved: