Introduction

This documentation contains the Industrial Valve Island (Arrow3 product) linux application contents. Here we have Main bus node, IO modules and Valves connected.

IO modules can contain following modules:-

• DIO
• DO
• DI
• AIO
• AO
• AI

Valves can contain the following:-

• Pressure zone:- ISEM diagnostics valve, No of stations(Standard valves), No of diagnostics valves, Proportional station valves(Internal prop)
• External pressure zone:- Proportional module valves(External prop)

Overview

The LCD GUI application operates on a Linux core, communicating with a data server for data exchange. The application includes five threads, each dedicated to specific tasks to ensure modularity, scalability, and performance.

Key Features

Read Operations:

• Fetch MAC address
• Module details (Part number, Hardware and Firmware revision)
• PIN details
• IP address details (default values)
• module status (device type, status value, scrolling status and suggestion details)
• Poll status details from the data server on configurable interval.

Write Operations:

• Send user-entered IP configuration details to the data server.

Threads and Responsibilities:

• Thread 1: LVGL State Machine
  • Manages the lifecycle and states of the LVGL GUI framework.
• Thread 2: LVGL GUI
  • Handles GUI rendering and user interface interactions on the display.
• Thread 3: Data processing polling
  • Continuously polls the status details for all the modules in a hierarchy.
• Thread 4: Poll for Screen Alerts
  • Continuously polls for any screen pop-ups indicating warning or fault statuses.
• Thread 5: Keypress Check
  • Monitors keypress events for navigation and user actions.

Sequence Diagram - link