0

When I do the following:

s= serial.Serial('/dev/',9600)
# or set a function and pass via command line
    s= serial.Serial(arg1,9600)

The code executes without any error.
But, when I use AJAX and POST the parameters to the script

def index(req):
    info = req.form
    sys.stderr = sys.stdout
    s= serial.Serial(info['device'],9600)

An error occurs:

Traceback (most recent call last):

File "/usr/lib/python2.6/dist-packages/mod_python/importer.py", line 1537, in HandlerDispatch
default=default_handler, arg=req, silent=hlist.silent)

File "/usr/lib/python2.6/dist-packages/mod_python/importer.py", line 1229, in _process_target
result = _execute_target(config, req, object, arg)

File "/usr/lib/python2.6/dist-packages/mod_python/importer.py", line 1128, in _execute_target
result = object(arg)

File "/usr/lib/python2.6/dist-packages/mod_python/publisher.py", line 213, in handler
published = publish_object(req, object)

File "/usr/lib/python2.6/dist-packages/mod_python/publisher.py", line 425, in publish_object
return publish_object(req,util.apply_fs_data(object, req.form, req=req))

File "/usr/lib/python2.6/dist-packages/mod_python/util.py", line 554, in apply_fs_data
return object(**args)

File "/var/www/md-result/libs/system/usb-mobile/balance.py", line 23, in index
s= serial.Serial(info,9600),

File "/usr/lib/python2.6/dist-packages/serial/serialutil.py", line 154, in __init__
self.port = port

File "/usr/lib/python2.6/dist-packages/serial/serialutil.py", line 201, in setPort
self.portstr = self.makeDeviceName(port)

File "/usr/lib/python2.6/dist-packages/serial/serialposix.py", line 297, in makeDeviceName
return device(port)

File "/usr/lib/python2.6/dist-packages/serial/serialposix.py", line 34, in device
return '/dev/ttyS%d' % port

TypeError: %d format: a number is required, not StringField

I have no idea why it is doing this, I checked the POST parameters passed by printing them and they are coming through.

Any suggestions would be greatly appreciated.

Thanks,
Spogs

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Last Post by spogs
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First of all, don't you have to pass the complete device name?

For a serial port, this is '/dev/ttyS0'.

Edit:
I tried to figure out your code via the error messages.

It's a problem with integer - string conversion.
Your 'port' variable get a string value. You have to convert that to a number.
Or you can use:

return '/dev/ttyS%s' % port

%s in stead of %d

Edited by Firewolf: n/a

0

Hi Firewolf,

Thanks for the feedback you were right re string conversion I corrected it:
s= serial.Serial(str(info),9600)

Cheers,
Spogs

First of all, don't you have to pass the complete device name?

For a serial port, this is '/dev/ttyS0'.

Edit:
I tried to figure out your code via the error messages.

It's a problem with integer - string conversion.
Your 'port' variable get a string value. You have to convert that to a number.
Or you can use:

return '/dev/ttyS%s' % port

%s in stead of %d

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