On 2012-05-18, Ron Eggler <rondotegg...@tscheemail.com> wrote: > I'm trying to connect to a serial port and always get the error > "serial.serialutil.SerialException: Port is already open." which is > untrue.
It is true. > I have no serial port open yet, my code looks like this: > #!/usr/bin/python > import time > import serial > > # configure the serial connections (the parameters differs on the device > # you are connecting to) > ser = serial.Serial( > port='/dev/ttyUSB0', > baudrate=19200, > parity=serial.PARITY_ODD, > stopbits=serial.STOPBITS_TWO, > bytesize=serial.SEVENBITS > ) The call above opened the port. Please see the pySerial documentation: http://pyserial.sourceforge.net/shortintro.html#opening-serial-ports Particularly the first example: Open port 0 at "9600,8,N,1" no timeout: >>> import serial >>> ser = serial.Serial(0) # open first serial port >>> print ser.portstr # check which port was really used >>> ser.write("hello") # write a string >>> ser.close() # close port And here to try to open and already-opened port: > ser.open() > > Why do I get this error? Becaue the port is already opened. :) -- Grant Edwards grant.b.edwards Yow! Sign my PETITION. at gmail.com -- http://mail.python.org/mailman/listinfo/python-list
