Update README

gui/CAEN-N1471H/README.md

@@ -3,13 +3,35 @@
 ## Overview
 The `CaenHVPSGUI` is a graphical user interface (GUI) designed to control and monitor CAEN High Voltage Power Supply (HVPS) modules. The interface is built using Python's `tkinter` library, with threading to handle background tasks and maintain responsive interaction. The GUI supports various functionalities such as setting voltages, turning channels on or off, monitoring channel states, and handling alarms.
 
+The communication with the CAEN HVPS is done by the [hvps](https://github.com/lobis/hvps.git) python library.
+
 ## Features
 - **Real-time Monitoring**: Voltage (`vmon`), current (`imon`), and state indicators are updated in real-time.
 - **Multi-Channel Support**: The GUI can handle modules with multiple channels, providing individual control and monitoring for each channel.
 - **Alarm and Interlock Management**: Visual indicators and tooltips provide status information on the module alarms and interlock.
 - **Threaded Background Processing**: Ensures the GUI remains responsive during long-running operations.
 - **Tooltips**: Interactive tooltips provide additional information when hovering over various GUI elements.
 
+## How to Use
+### Requirements
+Make sure to have tkinter installed in your system (check [this](https://stackoverflow.com/a/74607246) if you don't) and the hvps python library (check [hvps installation guide](https://github.com/lobis/hvps?tab=readme-ov-file#installation-%EF%B8%8F)).
+
+Download the [gui.py](gui.py) script or clone the repository.
+### Usage
+At the directory where this [gui.py](gui.py) is found, run
+``` bash
+python3 gui.py --port /dev/ttyUSB0
+```
+Note that you may need to change the port. To show available ports run
+``` bash
+python -m hvps --ports
+```
+#### Test mode
+If you want to test the GUI without having the hardware available, copy the [caen_simulator.py](caen_simulator.py) module to the same directory where the [gui.py](gui.py) script is found and just run
+``` bash
+python3 gui.py --test
+```
+
 ## Code Structure
 
 ### Main Classes
@@ -30,17 +52,3 @@ The `CaenHVPSGUI` is a graphical user interface (GUI) designed to control and mo
 - **Alarm Frame**: Displays alarm and interlock indicators with buttons to clear signals.
 - **Channels Frame**: Lists all available channels with options to set voltages, monitor values, and toggle states.
 - **Multichannel Frame**: Provides batch operations on multiple channels.
-
-## How to Use
-
-### Real Usage
-1. Ensure you have the `hvps` library installed and the CAEN HVPS connected to your system.
-2. Instantiate the `CaenHVPSGUI` class with a valid `module` object from the `hvps` library.
-
-   Example:
-   ```python
-   import hvps
-   caen = hvps.Caen(port='/dev/ttyUSB0')
-   m = caen.module(0)
-   CaenHVPSGUI(module=m)
-   ```