ESP32 RMT peripheral IR library

Arduino friendly IR library utilizing ESP32 RMT peripheral

Protocols supported (send, limited receive):

• NEC
• SAMSUNG
• RC5

What's new

IR code is now decoded correctly (NEC and SAMSUNG, RC5 needs a bit of extra work).

NEC sometimes decodes odd values, but might be down to config or cheap remotes.

I am happy with the prototype. This is the last commit before a big refactoring.

Example

#include <RMTLib.h>

RMTLib RMTLib;

const int TX_PIN = 27;

void setup()
{
  Serial.begin(115200);
  
  RMTLib.setTxPin(TX_PIN);
}

void loop()
{
  Serial.println("sending command");

  RMTLib.sendNEC(0x5743C03F);
  delay(5000);
}

TODO

• Receive and decode (Arduino)
• Repeat/toggle functionality
• Refactoring current prototype level code

Planned

• Examples to send/decode IR code through WIFI (Web, MQTT or CoAP)

History

Version 0.3b

• Added SAMSUNG decode and started on RC5 decode

Version 0.3

• More reliable receive code (NEC only)
• Added extra debugging

Version 0.2a

• Added initial receive code for NEC (IR code is decoded but bits are reversed)
• Massive code refactoring (planning to support Arduino IDE + ESP-IDF toolchain with Eclipse)
• Fixed RMT_CLK_DIV, 80 instead of 100

Version 0.2

• GPIO can now be set at the beginning

Version 0.1

Initial version

• Arduino library with example sketch
• Send only

Credits

Based on ideas from

• Arduino-IRremote library
• ESP-IDF infrared_nec_main.c example
• Various RMT examples on github