F439_CPP_TX-RX_LoRa_Project Documentation

This documentation covers the firmware architecture for the STM32 Nucleo-F439 TX/RX LoRa project.

Project Overview

The firmware currently targets a secure LoRa weather-station link built around:

• STM32 Nucleo-F439
• SX1262 LoRa radio
• TX outdoor weather-station node
• RX indoor receiver/display node

Project-Level Documentation

• Firmware Architecture Overview
• Firmware Architecture Groups
• Radio Application Layer
• RadioLink Protocol Layer
• SX1262 Driver Layer
• Persistence Layer
• Hardware Abstraction Layer
• RadioLink Subsystem
• Protocol Verification and QA Harness
• Wire v3 RX Processing Pipeline
• RadioLink Security Model
• Wire v3 Frame Format

Architectural Direction

The documentation structure is intentionally project-level rather than module-only. This allows future expansion to describe:

• radioApp behavior and role handling
• transport-agnostic RadioLink reuse
• protocol verification / QA harness operation
• persistent replay-state handling
• future subsystem-level architecture growth