indipyclient
This indipyclient package provides classes used to communicate to an INDI server. In particular your script can import and create an instance of the 'IPyClient' class.
INDI - Instrument Neutral Distributed Interface.
See https://en.wikipedia.org/wiki/Instrument_Neutral_Distributed_Interface
INDI is often used with astronomical instruments, but is a general purpose protocol which can be used for any instrument control.
The INDI protocol defines the format of the data sent, such as light, number, text, switch or BLOB (Binary Large Object). The client takes the format of switches, numbers etc., from the protocol.
The IPyClient object has an asyncrun() coroutine method which needs to be awaited, typically gathered with your own tasks. The client transmits a 'getProperties' request (this indipyclient package does this for you on connecting).
The server replies with definition packets (defSwitchVector, defLightVector, .. ) that define the format of the instrument data.
The indipyclient package reads these, and its IPyClient instance becomes a mapping of the devices, vectors and members.
For example, if ipyclient is your instance of IPyClient:
ipyclient[devicename][vectorname][membername] will be the value of a particular parameter.
A 'vector' is a collection of members, so a switch vector may have one or more switches in it.
As the instrument produces changing values, the server sends 'set' packets, such as setSwitchVector, setLightVector ..., these contain new values, which update the ipyclient values. They also cause the ipyclient.rxevent(event) method to be called, which you could overwrite to take any actions you prefer.
To transmit a new value you could call the ipyclient.send_newVector coroutine method.
Indipyclient can be installed from Pypi with:
pip install indipyclient
Further documentation is available at:
https://indipyclient.readthedocs.io
The package can be installed from:
https://pypi.org/project/indipyclient
A terminal client 'indipyterm' is available, which itself calls on indipyclient to do the heavy lifting, and uses the textual package to present terminal characters, this is available at:
https://pypi.org/project/indipyterm
https://github.com/bernie-skipole/indipyterm
Similarly 'indipyweb' is available, also using indipyclient, and creates a web service which enables browsers to view and control the connected instruments. This is available at:
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Release files for indipyclient 0.9.3
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