lorenzo-rovigatti/pytardo

Pytardo

Arduino setup

The Arduino board should be set up so that it prints out a line containing comma-separated readings whenever something gets written to the serial port. An output example would be:

T1 = 20, T2 = 32, c = 0.1

Architecture

• The Poller class continously polls arduino to get the readings.
• Readings are logged through the log() method of loggers objects that are added to the Poller through the Poller.add_logger() method.
• Readings are checked against user-defined conditions by the Monitor class. Monitor objects can be added to the Poller through the Poller.add_monitor() method.
• Monitor objects prepare a list of readings that meet one or more conditions (and hence might raise warnings) and pass it to callbacks objects, together with all the current readings, through their react() method. Note that react() is always called, even when there are no warnings. In this way callbacks objects can update their internal status after each reading (useful, for instance, to keep track of values oscillating around a threshold).
• Conditions are parsed and managed by ad-hoc objects that have a is_met method (see conditions.py).

Configuration

pytardo.py or pytardod.py expect a single argument that specifies the path of the file that contains the configuration. Example configuration files can be found in the examples/ folder.

Dependencies

• pySerial
• python-daemon
• MySQL-python

Acknowledgements

• The dummyserial.py package is heavily based on dummyserial