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BGS5: Fix RS232Demo ConnectionNotFoundException error
Tutorial, January 16, 2017 - 8:35am, 4505 views
After installed Java CD, one could find there are 6 demo projects included, RS232Demo is one of them.
If you are using BGS5 for Java development, and happened to run RS232Demo project, you'll find the following error message from the console:
RS232Demo: Constructor Available COM-Ports: COM0,USB0 javax.microedition.io.ConnectionNotFoundException: com0 port not found! MIDlet:RS232Demo.RS232Demo exited
For this case, actually the 2nd line of debug message already gives you hint of solution
Available COM-Ports: COM0,USB0
It’s the output of
System.out.println("Available COM-Ports: " + System.getProperty("microedition.commports"));
My advice is changing the strCOM, replacing the port identifier “com0” from lower case to “COM0”, this will fix the issue:
try { String strCOM = "comm:COM0;blocking=on;baudrate=115200";