Thank you Andre for the fast response. Ok than I found the problem, why the program need so much RAM 😂
Am Di., 9. Apr. 2019 um 08:21 Uhr schrieb Andre Hartmann < andre.hartm...@iseg-hv.de>: > Hi Martin, > > > What is, when I ignore the ready read? > > The data will stay in the buffer, of course. > > > Has the internal buffer a max size? > > Your RAM or 2^32, whichever is lower. > > > Because at the moment I have a memory leak and maybe it comes from > > that? > > I doubt that. A leak would mean, you cannot use the data anymore, which > is wrong here - you just need to fetch the data from the buffer. > > Regards, > André > > > > > Martin > > > > Am Fr., 5. Apr. 2019 um 21:12 Uhr schrieb Konstantin Shegunov > > <kshegu...@gmail.com <mailto:kshegu...@gmail.com>>: > > > > On Thu, Apr 4, 2019 at 6:42 PM Jérôme Godbout <godbo...@amotus.ca > > <mailto:godbo...@amotus.ca>> wrote: > > > > You jus did the same loop into your slot, the function I did > > made can be called as slot to the connect you just told, I agree > > the serial_port->waitForReadyRead(5); is not necessary, just > > often the transmission have partial or bunch of data by small > > burst (USB VCOM) and was handy for me, but it is not ncessary in > > any way. > > > > A similar loop yes, however your loop goes until there's something > > to read on the port, mine is run a few times only when the port > > already has some information pending in its buffer. The QSerialPort > > class already knows if data has arrived and buffers it*, so what > > would be the point to loop over the port when there's no data? When > > you talk with someone do you ask every 5ms if [s]he has something to > > say to you? I really doubt it. You'd normally just wait for > > something to be said to decide if and how to respond to it. > > > > Side note: ReadLines made it less general purpose, you will need > > a protocol that use endline to signal end of message which is > > not always the case. > > > > Involving realistic protocol handling is another kettle of fish. It > > would require much more thought and effort and is beyond the scope > > of what was asked initially. > > > > * Unless it's in unbuffered mode, as Thiago already noted. > > > > _______________________________________________ > > Interest mailing list > > Interest@qt-project.org <mailto:Interest@qt-project.org> > > https://lists.qt-project.org/listinfo/interest > > > > > > _______________________________________________ > > Interest mailing list > > Interest@qt-project.org > > https://lists.qt-project.org/listinfo/interest > > >
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