nonblocking reads in windows?

Jirka 'Eagle' Novak eagle at unicode.cz
Tue Aug 27 13:47:28 CEST 2002


Joe Connellan wrote:
> I'm on WinXP, there is no problem opening the com port, no errors, etc. But if I
> try to write or read from it nothing happens - I know my com port works and the
> config is correct as I can use it with os.read, etc.

This code work for me. Are you *absolutely* sure you read data from the 
port correctly?

import serial
import serial.serialutil

SEND_STR = "Hello, this is just a test.\n\r"

try:
     comm = serial.Serial("COM1")
     comm.setRTS(0)
     raw_input("Press Enter to send data")
     comm.write(SEND_STR)
     raw_input("Press Enter to set RTS high.")
     comm.setRTS(1)
     raw_input("Press Enter to close port.")
     comm.close()
except serial.serialutil.SerialException:
     print ">>> Exception: could not open communication port"


-- 
Jirka 'Eagle' Novak
registered linux user #173581

E-Mail:   eagle at unicode.cz
ICQ:      46044619
HomePage: http://seal.unicode.cz/~eagle/




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