Terminal shows how to create a terminal for a simple serial interface by using Qt Serial Port. This example shows the main features of the QSerialPort class, like configuration, I/O implementation and so forth. Also, the class QSerialPortInfo is invoked to display information about the serial ports available in the system. Note: The serial port is always opened with exclusive access (that is, no other process or thread can access an already opened serial port). Use the close method to close the port and cancel the I/O operations. Having successfully opened, QSerialPort tries to determine the current configuration of the port and initializes itself.

1. Qt Serial Port Rs485

The example above shows how to open all available serial ports and then close them. But I want to open a given serial port, such as COM6, set its BaudRate,DataBits,Parity,StopBits ,FlowControl and then send a string of hexadecimal numbers.

1 Answer

This video will definitely help you: https://www.youtube.com/watch?v=UD78xyKbrfk

You can also find similar code here: https://cboard.cprogramming.com/cplusplus-programming/169624-read-write-serial-port.html

Example code:

Qt Serial Port Rs485

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I've successfully read data from EKM metering by using Python as in http://forum.ekmmetering.com/viewtopic.php?f=4&t=3472 link.
But before that I've tried to use C++ for a long time but it is unsuccessful. I follow this document http://www.chemie.fu-berlin.de/chemnet/ ... tml#SEC237, the below is my codeThe result isBut when I change code for canonical mode of POSIX There are not thing display because program is waiting data from serial port
And when I dump serial port, it show me that there are something has received as below
Anyone can suggest me how can I fix it.