QSerialPort High Speed Serial Reading from board and Logging Issue

[kuzulis]

> Because i'm thinking QSerialPort cant handle the high frequency communication.

It is only your wrong thinking.

> serial->setReadBufferSize(400);

Don't touch this at all.

By default the internal buffer of QSP is infinite, and QSP does not lose any data.

> serial->clear(...)

Do not use it.

PS: The problem is in your code.