hello. Im new to serial topics.

I try to get a program written in Arduino to communicate with Processing application in win7 64 bit environment.

I did download processing for 32 bit environment and uses that.

 

I try to run example from J. Blum writing code for Arduino and Processing. Ive checked serial output from Arduino its ok, so guess the fault is in programming on Processing site.

 

Can You kindly tell if the error I get is due to serial handling or other topics so I know the correct thread to post further requests?

 

Thank You

 

heres the error:

 

[0] "COM1"
[1] "COM4"
error, disabling serialEvent() for //./COM4
java.lang.reflect.InvocationTargetException
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:597)
 at processing.serial.Serial.serialEvent(Unknown Source)
 at gnu.io.RXTXPort.sendEvent(RXTXPort.java:732)
 at gnu.io.RXTXPort.eventLoop(Native Method)
 at gnu.io.RXTXPort$MonitorThread.run(RXTXPort.java:1575)
Caused by: java.lang.NullPointerException
 at sun.misc.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:989)
 at java.lang.Float.valueOf(Float.java:388)
 at java.lang.Float.<init>(Float.java:489)
 at processing.core.PApplet.parseFloat(PApplet.java:8573)
 at processing.core.PApplet.parseFloat(PApplet.java:8568)
 at accelshow.serialEvent(accelshow.java:133)
 ... 8 more