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SMS sending and receiving with enfora gsm modems

Project description

The sms package provides sms capabilities for Enfora gsm modems, and probably others. I developed this package for my location-specific nature haiku by sms project N8R TXT (http://n8rtxt.org/).

The sms package provides Modem and Message classes for sending and receiving sms message.

The sms.server module provides two servers that allow you to dispatch incoming sms messages. The sms.echo module is an example that works with the sms.server.subprocess_server.

Usage

Create a modem object passing it the serial device ID. On windows this would be something like ‘COM1’. The example below is for mac and linux:

>>> import sms
>>> m = sms.Modem('/dev/ttyS0')

You can have use several modem objects concurrently if you have more than one modem attached to different serial ports.

To send a sms message call the send method, passing a phone number string and a message string.

>>> m.send('14161234567', 'This is a message')

If an error occurs a ModemError will be raised with the error message.

>>> m.send('14161234567', 'This is a message')
Traceback (most recent call last):
...
ModemError: ['ERROR']

You can retrieve sms messages with the messages() method. It returns a sequence of message objects.

>>> m.messages()
[<sms.Message object at 0x...>]

Message objects have a couple attributes: number, date, and text.

>>> msgs = m.messages()
>>> msgs[0].number
'+16476186676'
>>> msgs[0].date
datetime.datetime(2008, 7, 11, 11, 2, 11)
>>> msgs[0].text
'Activation code 63966 Go 2 www.ipipi.com and signin with  your username and pwd, enter 63966 to activate your mobile/account\n\nWelcome 2 ipipi.com'

After you receive messages you’ll want to delete them from the SIM card. This is done by calling the delete method on the messages.

>>> msgs[0].delete()

Rather than polling the modem to find messages you can call the wait() method, which blocks until a message is received. The wait method takes an optional timeout argument.

>>> m.wait(1) # waiting with 1 timeout
>>> m.wait() # waiting with no timeout

The wait message doesn’t return anything. You should call the messages() method after it returns to receive the messages. Note that it’s possible that there may in fact be no messages available after the wait method returns.

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