Howdy, Stranger!
We are about to switch to a new forum software. Until then we have removed the registration on this forum.
Categories
- All Categories 25.7K
- Announcements & Guidelines 13
- Common Questions 30
- Using Processing 22.1K
- Programming Questions 12.2K
- Questions about Code 6.4K
- How To... 4.2K
- Hello Processing 72
- GLSL / Shaders 292
- Library Questions 4K
- Hardware, Integration & Other Languages 2.7K
- Kinect 668
- Arduino 1K
- Raspberry PI 188
- Questions about Modes 2K
- Android Mode 1.3K
- JavaScript Mode 413
- Python Mode 205
- Questions about Tools 100
- Espanol 5
- Developing Processing 548
- Create & Announce Libraries 211
- Create & Announce Modes 19
- Create & Announce Tools 29
- Summer of Code 2018 93
- Rails Girls Summer of Code 2017 3
- Summer of Code 2017 49
- Summer of Code 2016 4
- Summer of Code 2015 40
- Summer of Code 2014 22
- p5.js 1.6K
- p5.js Programming Questions 947
- p5.js Library Questions 315
- p5.js Development Questions 31
- General 1.4K
- Events & Opportunities 288
- General Discussion 365
How check if a Port is busy and how prevent a crash when trying to a busy port.
I have written some code which automatically connects to every COM port on your PC and listens to it for 2.5 seconds. If the computer receives a or several byte(s) it stays connected with that COM port. Otherwise it moves to the next. And it works quite nicely, it also works when you plug in an Arduino or something when the program is already running.
However when I try to connect with a COM port which is 'busy', the program crashes. I won't be dealing with already connected COM ports but I do like to know how I can:
- verifiy that I am connected with a COM port or not? (when I yank out an USB cable for example)
- check if a COM port is busy or not? (check if I can connect with that COM port or not)
3. deal with the error you get when you try to connect with a busy COM port? (special Event Handler?) RuntimeException solves dat problem.