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Python© Debugging Tool for Telit GPS m2m Modules/Converter Multiplexer

Telit offers two m2m GPS modules, the GM862-GPS and the GE863-GPS, that enable the development of cost-optimized GPS powered applications through the combination of GSM/GPRS, Python© and GPS.

The integrated Python© software allows clients to customize their application and to send GPS data in real-time via GSM/GPRS. To make using Python© easier, a special tool helps to perform Python© debugging on Telit m2m GPS modules. This tool uses the CMUX (converter-multiplexer) feature implemented on the Telit modules. The multiplexer mode creates four virtual channels on one serial interface and permits the transmission of data to four different applications. This makes it possible to run a Python© script and at the same time use CMUX on ASC0 with the following division of channels:

• V-Channel 1: CMUX port is reserved for SER module (communication with serial port)
• V-Channel 2: CMUX port is available for AT command handling or MDM2 interface
• V-Channel 3: CMUX port is available for AT command handling
• V-Channel 4: CMUX port is dedicated for Python debug data

To perform the debugging of the Python© script you first need to establish a connection on the virtual port with Telit's unique serial port mux tool for Windows (see picture below).

When it is activated, simply power on the module and the debug info will appear automatically in the window of the terminal emulator application you've chosen (e.g. Hyper Terminal).