QSerialPort.sendBreak() does not send break on Mac, but does on Windows
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I'm trying to use the qserialport sendbreak function: https://doc.qt.io/qt-5/qserialport.html#sendBreak.
On Windows 10 with Qt desktop 5.12.3, this seems to pass a break correctly to an stm32 CDC VCP device. On Mac 10.13.4 with QT 5.11.0 it does not seem to pass a break sequence.
Is there a way around this or am I doing something wrong?
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Hi and welcome to devnet,
What about using Qt 5.12.3 as well on macOS ?
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Just loaded 5.12.3 on my mac as well and it appears to have the same symptoms
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It appears that this must be part of the Mac USB CDC driver because other terminal software "send break" functions don't work either.
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No I'm using an STM32F7 chip with HAL USB CDC class software.
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the QSP::sendBreak() based on tcsendbreak system call (on all POSIX-compatible systems). So, if it does not work, then, it is possible that it is not implemented in OSX driver. Anyway, try to check that QSP::sendBreak() return true. If it return false, then show an error text and error code.
