<![CDATA[Serial Port Data Loss]]>Hello, I am exchanging data with the CPU via serial port. The data coming from the CPU appears missing on my console screen. How can I fix this?

QByteArray dataPacket = serial->readAll();
This is how I read the incoming data packet.

The value I want to display on the console screen: Main data coming via Serial Port "\x02\x00\xB0\x13\x0F\xFA\x02\xCE\x03"
but The value I see: "\x02\x00\xB0\x13\x0F"

]]>https://forum.qt.io/topic/153845/serial-port-data-lossRSS for NodeSun, 27 Sep 2026 03:46:35 GMTMon, 15 Jan 2024 08:41:16 GMT60<![CDATA[Reply to Serial Port Data Loss on Mon, 15 Jan 2024 12:25:00 GMT]]>@Rumeysa_135 Hi,

You keep a buffer that you append to each time readyRead is fired and check for when you have a full frame of your data in there. Then take the data out of the buffer and process it.

]]>https://forum.qt.io/post/786574https://forum.qt.io/post/786574Mon, 15 Jan 2024 12:25:00 GMT<![CDATA[Reply to Serial Port Data Loss on Mon, 15 Jan 2024 12:00:00 GMT]]>@jsulm How do I handle accumulating data until I have everything?

]]>https://forum.qt.io/post/786571https://forum.qt.io/post/786571Mon, 15 Jan 2024 12:00:00 GMT<![CDATA[Reply to Serial Port Data Loss on Mon, 15 Jan 2024 09:44:11 GMT]]>@Rumeysa_135 said in Serial Port Data Loss:

ReadWrite signal.

What is ReadWrite signal?!
What you need to do is to connect a slot to readyRead signal and in this slot call serial->readAll() and accumulate the data until you got everything (you will not always get all data at once when calling readAll).

]]>https://forum.qt.io/post/786550https://forum.qt.io/post/786550Mon, 15 Jan 2024 09:44:11 GMT<![CDATA[Reply to Serial Port Data Loss on Mon, 15 Jan 2024 09:28:42 GMT]]>@jsulm
I am using ReadWrite signal.
serial->open(QIODevice::ReadWrite)

]]>https://forum.qt.io/post/786544https://forum.qt.io/post/786544Mon, 15 Jan 2024 09:28:42 GMT<![CDATA[Reply to Serial Port Data Loss on Mon, 15 Jan 2024 09:22:16 GMT]]>@Rumeysa_135 said in Serial Port Data Loss:

exchanging data with the CPU via serial port

CPU?!

"This is how I read the incoming data packet" - where and when do you do this? Do you use signals/slots (readyRead signal)? I guess you don't...

]]>https://forum.qt.io/post/786540https://forum.qt.io/post/786540Mon, 15 Jan 2024 09:22:16 GMT