Work in progress.

IR remote controller exposed through I2C, primarily for Attiny85. The controller is configured as an I2C slave with the address 0x8:

• when data is written to it, data will be transmitted on IR_SEND_PIN (NEC protocol)
• when data is read from it, the last captured signal on IR_RECV_PIN is returned (NEC protocol)
• decoded data from the IR receiver is stored for 5 seconds, available to be retrieved by the I2C master device

In all cases, raw data is sent and received (4 bytes), the most significant byte being sent first. Due to the limited memory, only NEC protocol is supported as of now.

Used libraries:

• Wire.h (v1.5.2)
• IRremote.h (v4.1.0)

Suggestions and fixes are welcome.