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Hi All,
I am trying to get the
serial port (com1 or com2) to work on a PC, using python. It works fine
under Linux (/dev/ttys0) but under windoze 95 I am having no joy.
Some
background:
When I use the standard
distribution (not pywin) as downloaded, I find that there is no serial module,
and also no fcntl module - (on Linux I used fcntl to make the port non blocking,
which works fine). when I open com1 or com2 using the standard distribution I am
able to send stuff out - I get nulls for every character - I know this because
there is a datascope attached to the port - if I use the device manager to set
the port up - it makes no difference - if I first set the port up using
hyperterm, then I can transmit, but not receive - I know the hardware is working
because I have another old DOS box running procomm attached, and using hyperterm
I can chat to and fro...
When I download and install
the pywin stuff, then I am worse off - there is something wrong with the
installation, and I am unable to work out what it is, as the error message I get
is a bit cryptic - whenever the interpreter hits the statement:
import
win32file
then I get the following
exception:
IDLE
1.1.3 ==== No Subprocess ====
>>> Traceback (most recent call last): File "E:\Python24\Tools\Scripts\junk1.py", line 1, in ? import win32file ImportError: DLL load failed: A device attached to the system is not functioning. >>> Now I have worked through
the installation problems stuff on the Pywin site, and I can find no duplicate
dlls.
How do I figure out what it
is that is missing or broken so that I can get it and install it?
Is there a list of required
files somewhere so that I can check?
I am
snookered...
I would prefer to use the
Linux OS exclusively, as I have had very little problems interfacing our device
to the port - the interpreter is fast enough to handle a continuous stream of
data at 38400 Baud without a hiccup - however - here in South Africa
there are still a lot of machines out there running 95 and 98 - I assume
(hopefully not incorrectly) that if it will run on 95 it will run on
anything...
Regards,
- Hendrik van
Rooyen
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