Fsuipc Python -

import fsuipc
def main():
    # Connect to FSUIPC
    ipc = fsuipc.connect()
# Read the aircraft's latitude and longitude
    lat = ipc.read('Latitude', fsuipc.FLOAT)
    lon = ipc.read('Longitude', fsuipc.FLOAT)
print(f"Latitude: lat, Longitude: lon")
# Write a value to the aircraft's altitude
    ipc.write('Altitude', 10000, fsuipc.FLOAT)
# Disconnect from FSUIPC
    ipc.disconnect()
if __name__ == "__main__":
    main()

You can also write values to the simulator to move switches or set values.

Note: Writing usually requires a Registered version of FSUIPC.

Here is how to pause the simulator or set the Com1 Frequency.

import fsuipc
import time
def main():
try:
client = fsuipc.FSUIPC()
print("Connected.")
except Exception as e:
print(e)
return
try:
    # --- WRITING ---
    # Example 1: Pause the simulator
    # Offset 0x0262 is the Pause flag. 1 = Paused, 0 = Unpaused.
    # Type is 'h' (2 bytes usually, though often handled as byte).
    # We write the value 1 to pause.
print("Pausing simulator...")
    client.write(0x0262, 1)
time.sleep(3) # Wait 3 seconds
print("Unpausing simulator...")
    client.write(0x0262, 0)
# Example 2: Setting COM1 Standby Frequency
    # Offset 0x311A (COM1 Standby) usually expects a frequency in BCD format.
    # This is complex, so usually, we just use standard integers for simple flags.
finally:
    client.close()

if name == "main":
main()

If you want, I can:

FSUIPC (Flight Simulator Universal Inter-Process Communication) is a foundational utility for flight simulators like Microsoft Flight Simulator (MSFS) and Lockheed-Martin's Prepar3D . While it is traditionally accessed via C++ or Lua, Python has become a powerful way to interact with its "inner workings" through third-party wrappers . The Role of FSUIPC

At its core, FSUIPC acts as a middleman between the simulator and external applications . It manages a 65,535-byte memory block populated with live simulator data, such as altitude, pitch, and heading . Each specific piece of data is stored at a unique address known as an "offset" . By reading from or writing to these offsets, developers can build custom dashboards, external hardware interfaces, or automation scripts . Interfacing with Python

Because FSUIPC is a Windows-based DLL/EXE, Python developers rely on client wrappers to communicate with its memory map.

fsuipc (PyPI/GitHub): A popular Python client wrapper that provides a simple class-based interface to read and write offsets. It is built on top of pyuipc and is specifically for Windows platforms . fsuipc python

pyfsuipc: An alternative Cython-based module compatible with Python 3, though it is often noted as being in more experimental phases . Performance and Data Handling

Using Python for simulator telemetry can encounter bottlenecks if not optimized.

High-Frequency Updates: In some implementations, generating high-frequency telemetry (e.g., 60 updates per second) through FSUIPC can cause significant dashboard lag .

System Impact: While FSUIPC itself uses minimal GPU resources, it can impact FPS if the CPU is heavily loaded. It includes features to set an affinity mask, allowing it to run on separate CPU cores to minimize simulator stutters . Common Use Cases tjensen/fsuipc: Python client wrapper for FSUIPC - GitHub

Fsuipc is built on top of (and includes) pyuipc fsuipc only supports Python on Windows platforms. voneiden/pyfsuipc: Python 3 compatible Cython ... - GitHub import fsuipc def main(): # Connect to FSUIPC

Consider the task of building a real-time telemetry dashboard for a long-haul flight in a Boeing 737. Using pyFSUIPC, a Python script would first establish a connection to the simulator. The developer then requests specific offsets: 0x0C1A for radio altitude, 0x084C for engine N1 RPM, and 0x024C for the gear position indicator. By placing these reads inside a timed loop (e.g., 10 Hz refresh rate), the script can pipe the data to a UDP socket, which a Python web application using Flask and Socket.IO consumes and displays on a tablet. The entire system is cross-platform, lightweight, and requires no recompilation when the simulator updates—a stark contrast to traditional C++ modules.

Furthermore, Python can write back to offsets. For a custom force-feedback yoke, a script could read control surface deflections from 0x2BAC and write calculated force values to an Arduino over serial. Or, for serious study-level flying, a Python script can automate repetitive flows, such as an engine start sequence, by writing to offset 0x0892 (starter switch) and monitoring 0x08A4 (oil pressure) until the target value is met.

The standard way to interact with FSUIPC in Python is using the fsuipc library.

Open your terminal or command prompt and run:

pip install fsuipc

The most popular Python library for FSUIPC is pyfsuipc (or fsuipc on PyPI). Install it via pip: You can also write values to the simulator

pip install pyfsuipc

Note: Some projects use pyuipc or direct ctypes calls. We’ll use pyfsuipc for its simplicity.