Thread: Java jar programme with a microcontroller

hi.. i am required to write a java programme to get input from the micro controller thru its SCI port... the SCI port would be connected to my PC's COM1... i would like to check in my java programme how do i write the connection statement or codes to get the input from the microcontroller?? the programme will be using JPanel/JFrame...

You'll probably be using RXTX then? Does your PC have a COM1? That's a serial port on a Microsoft operating system, right? None of my PCs have serial ports - I use USB serial adapters. They're not expensive, but not everywhere has them.

Originally Posted by Sean4u

You'll probably be using RXTX then? Does your PC have a COM1? That's a serial port on a Microsoft operating system, right? None of my PCs have serial ports - I use USB serial adapters. They're not expensive, but not everywhere has them.

my com has serial port.. and sorry for nt mentioning that this is a school project... so i have to stick with serial... do u happen to have the java code to get the inputs from the serial ports??

do u happen to have the java code ...?

Somewhere between the javax.comm packages and the RXTX project there's a collection of demo projects - it should be in with the rest of the sources / classes / libs you'll need to connect to your serial port. Make sure you compile all the demo projects and run them to understand how Java / serial port works. Once you have the demo projects working on your serial port, just look in the source for the fragment of code that does what you want and copy it from there. Remember to include adequate attribution in your comments and any reports you write.

If you don't have access to a working microcontroller yet, you can practice your Java serial programming by finding an old modem with a serial port on it, or a mobile phone with a PC cable (even many USB phone cable connections - particularly older ones - still create a kind of virtual serial port on the PC) may also work. That way you can send Hayes (AT) commands from your Java program and capture the responses from the modem/cellphone.