ArduinoCIR: Communication using consumer IR “remote” signals

(Send/receive “TV remote” (+satbox +…) commands)

Description

ArduinoCIR provides the ir_messaging library, a ready-to-use solution for sending/receiving consumer IR (remote-control) signals on Arduino platforms.

Features

• Simultaneously transmit & receive IR messages.
• (Untested): Build solutions supporting 2+ receivers or 2+ transmitters (Speed & hardware permitting).
• User-selectable hardware units for timers (not hard-coded in library).

Supported Protocols

The list of supported protocols is listed below.

• NEC: (tx/rx).
• RC-MM: (tx only).
• RC-5: (untested tx/untested rx).
• Sony SIRC: (untested tx/rx).

Note:

• Certain protocols might only be implemented for either transmit (tx) or receive (rx).
• New protocols can be added to libraries/ir_messaging/ir_protocol.cpp/.h.

Table of Contents

1. Description
2. Features
   1. Supported Protocols
3. Purpose of Library
4. Supported Hardware
5. Sample Sketches
6. Usage Tips
7. Wiring/Circuit Topology
8. Software Documentation
9. Resources/Acknowledgments
10. Known Limitations

Supported Hardware

ArduinoCIR was designed to support easily multiple Atmel platforms. At the moment, only a few are actually implemented:

• Atmel ATmega328/328P
  • Arduino Uno
  • Arduino Redboard (✅ Tested)
  • Arduino Pro
  • Arduino Fio
  • Arduino Mini
  • Arduino Nano
  • Arduino LilyPad
  • Arduino BT
  • Arduino Ethernet
• Atmel ATmega1280
  • Arduino Mega
• Atmel ATmega2560
  • Arduino Mega 2560 (✅ Tested)
  • Arduino Mega ADK (✅ Tested)

Known Limitations

• IR receiver currently only works using a 16-bit timer (IRCtrl::RxHw).
• IR transmitter currently supports two resource allocations:
  • System clock (Timer0) + an 8-bit timer (IRCtrl::TxHw),
  • or two 16-bit timers (IRCtrl::TxHw).

Compatibility

The ir_messaging library was tested on version 1.0.5+dfsg2-2 (Linux) of the Arduino IDE.

Disclaimer

This software is provided “as is”, with no guarantee of correctness.