EasyAlarm Hub Middleware (Arduino)

Arduino sketch that bridges NRF24 network packets to the Hub Backend over USB serial.

Hardware

• Arduino Uno (configured in platformio.ini as board = uno)
• NRF24L01+ module
  • CE pin: 7
  • CSN pin: 8

Serial protocol

• Baud: 9600
• Frame: <SOT and >EOT, fields delimited by !
• Outbound to backend: <address!payloadType!content>
• Inbound from backend: <payloadType!recipient!content>

Source overview

• src/main.cpp: initializes radio and forwards packets via SerialHandler
• src/serial_handler.*: serial framing and parse/emit
• src/radio_manager.*: NRF24 network wrapper