[Jython-dev] Serial Port

[Marc K. <MK...@wa...>]

Hi again,

I'm quite new to Jython and Java (a few days). Here is a piece of code I =
wrote to sub-class the SerialPortEventListener of the javax.comm =
package:

class MySerialPortEventListener (comm.SerialPortEventListener):
 def serialEvent (self, Event):
  print Event
  try:
   IBuf =3D '--------'
   ILen =3D IStream.available()
   while ILen > 0:
    INum =3D IStream.read(IBuf)
    print 'Read: OK', ILen, INum, IBuf
    ILen =3D IStream.available()
  except:
   raise

I get the following result for each character sent to the serial port =
(with help of a connected PSION)

javax.comm.SerialPortEvent[source=3DCOM2]
Read: OK 1 1 --------

What goes right:
- The EventListener works and is fired correctly
- The InputStream reports that data is available (1 byte)
- The InputStream.read method call reports that it has read data

What goes wrong:
- The buffer doesn't contain any data except the 8 '-'s that I have put =
in it for initialising


Please help, ... what am I missing?!?

(The other way around works. I managed to send data)


Thanks for any help and, once again, 'Jython is great'

Marc