Read serial port java source code

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Archived Comments 1. View Tutorial By: arwa at 3. View Tutorial By: arwa at 4. Hi you will run this program just as you run any o View Tutorial By: Steven at 5. But after View Tutorial By: jayaraj at 8. Whne i run this code ,it does not return any ports View Tutorial By: amit at 9.

Hi there, I was able to build this properly but he View Tutorial By: Damien at I'm reading data from device through serial port. I'm getting data for every one minute, but first reading is coming half, after that data is coming correctly. You are printing the result out of the while loop. However the code inside the loop may run more than once, so chunk of data will be lost. Try flushing the input buffer of the port before doing your read.

Otherwise, if the sending end has sent data during your program's startup or closely before, that might be up to the operating system , you will get old buffered data. Also, if possible, consider adding message framing to the protocol, so you can detect when you have read something that is not, in fact, a complete message, and discard it. This is often very helpful with these kinds of issues. Try to read as much data as possible as you start the program to clear any hardware buffers.

After that, start your processing. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Reading serial port in Java Ask Question.

Asked 13 years, 1 month ago. Active 7 years, 4 months ago. Viewed 80k times. SerialPortEventListener; import javax. UnsupportedCommOperationException; import javax. JButton; import javax. JComboBox; import javax. JDialog; import javax. JFrame; import javax. JLabel; import javax. SerialPort thePort.

Pop up the JDialog. Get the port name. Try again. Your mileage may vary. Printing a File 3. List the ports 4. Open a serial port using Java Communications 5. Choose a port, any port!