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  1. Qt
  2. QTBUG-78720

QSerialPort does not receive any data

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Details

    • Bug
    • Resolution: Duplicate
    • Not Evaluated
    • None
    • 5.13.1
    • Serial Port
    • None
    • Windows 7 64-bit
    • Windows

    Description

      On same PC and with same external device (Arduino Nano with CH340G USB-UART chip), attached code successfully finds desired port with Qt5.12.2 mingw73_32 (and Qt5.9.1 mingw53_32), but since Qt5.13.1 mingw73_32 could not find port (seems because no data recieved back after).

       

      Output with Qt5.13.1:

       

      Desired output (as it is with Qt 5.12.2):

       

      Firmware for the exernal device attached (see simplestprotocolever.ino)

      Attachments

        1. simplestprotocolever.ino
          3 kB
          Alex Taranov
        2. QSerialPort_Qt5_13_1_issue.pro
          0.9 kB
          Alex Taranov
        3. main.cpp
          2 kB
          Alex Taranov
        4. Output with Qt5.13.1.png
          54 kB
          Alex Taranov
        5. Output with Qt5.12.2.png
          63 kB
          Alex Taranov

        Issue Links

          duplicates

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-78086 QSerialPort readyRead broken in 5.13.1, was fine in 5.13.0

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; Flaky tests; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Closed
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          Activity

            People

              kuzulis Denis Shienkov
              pi-null-mezon Alex Taranov
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              Dates

                Created:
                Updated:
                Resolved:

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