Thank you for your answer.

We only want to read the position of a telescop. Not to drive it.

RA and DEC are calculated by a Python program, reading barcodes on pictures. Files attached show two examples of pictures.

The picture is taken by a camera on a Raspberry Pi 3.

On Raspberry number 1 (Ubuntu Mate), we installed KStars, Indi Server, Indi driver, and the Python program which measures RA.
On Raspberry number 2, we installed the Python program which measures DEC.
Python program number 2 sends DEC value to Python program number 1. This is ok. So Python program number 1 has RA and DEC numeric values.
Raspberry number 1 must send RA and DEC numeric values to Indi driver. We decided to implement a TCP communication between the C++ Indi driver and the Python program. A simple way to implement TCP communication consists in using zeromq dynamic library.

Is it possible to build Indi driver including zeromq library ?

Sincerely
Loic

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