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processing arduino via bluetooth

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- 26-Aug-2013 01:40 PM
- Forum: Integration and Hardware
hello

i want to send variables from processing to arduino via bluetooth.

if i use the port 10 i will get a error message.

if i connect via usb and a other port, the script works.

the processing code
2. // import the processing serial library
3. import processing.serial.*;
4. // and declare an object for our serial port
5. Serial port;
7. void setup() {
8. // Get the name of the first serial port
9. // where we assume the Arduino is connected
10. String portName = Serial.list()[0];
11. // initialize our serial object with this port
12. // and the baud rate of 9600
13. port = new Serial(this, "COM10", 9600);
14. }
16. void draw() {
17. // Szenedauer, wie lange soll die Kamera Fotos machen.
18. int szh = 1;
19. int szm = 10;
20. int szs = 00;
22. // Belichtung, wie lange soll die Belichtungsdauer sein
23. int bzm = 1;
24. int bzs = 10;
26. // Interval, wie lange dauert es zwischen zwei Fotos.
27. int izm = 00;
28. int izs = 5;
30. // load up all the values into a byte array
31. // then send the full byte array out over serial
32. // NOTE: This only works for values from 0-255
33. byte out[] = new byte[7];
34. out[0] = byte(szh);
35. out[1] = byte(szm);
36. out[2] = byte(szs);
37. out[3] = byte(bzm);
38. out[4] = byte(bzs);
39. out[5] = byte(izm);
40. out[6] = byte(izm);
41. port.write(out);}
The error message

at java.lang.Thread.run(Thread.java:662)

java.lang.NullPointerException

at processing.serial.Serial.write(Unknown Source)

at multivaraiter_string_processing_eeprom.draw(multivaraiter_string_processing_eeprom.java:58)

at processing.core.PApplet.handleDraw(PApplet.java:2270)

at processing.core.PGraphicsJava2D.requestDraw(PGraphicsJava2D.java:243)

at processing.core.PApplet.run(PApplet.java:2141)

at java.lang.Thread.run(Thread.java:662)

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