I've whittled my code down to bare bones- just setting up the serial port and looking for the byte. If I remove the bufferUntil(), serialEvent() triggers on every receive. If I do a check for the data value bufferUntil() should be looking for inside my serialEvent() (see code below), the program clearly sees and responds to that value, so I don't think it's an issue with the format of my data coming in.

I'm on Win7 with Processing 1.5.1; I've resolved the RXTX mismatch warning. The odd thing is, not that long ago, I had an application using bufferUntil() that worked on this computer.

Has anyone else experienced, heard of, or fixed this issue?

Mike

EDIT: The serial data source is an Arduino doing a Serial.write(0xFF), along with some other stuff. The content I see in the serial monitor suggests that the right data is coming across.

1. // EXTREMELY minimalist bufferUntil() test code- adapted from Tom Igoe's code on the bufferUntil() ref page.
2. 
   
3. import processing.serial.*;
4. 
   
5. Serial myPort;
6. int inVal = 0;
7. int endbyte = 255;
8. 
   
9. void setup() {
10.   myPort = new Serial(this, Serial.list()[0], 57600);
11.   myPort.bufferUntil(endbyte);   // if we comment this line out, things work SWIMMINGLY. Otherwise, serialEvent() never runs.
12. }
13. 
    
14. void draw(){}
15. 
    
16. void serialEvent(Serial myPort) {
17.   inVal = (myPort.read());
18.   if (inVal == endbyte) println("GROG!!!");
19.   println(inVal);
20. }