The API uses an IRsend object to send a code, and an IRrecv object to receive a code. The library cannot send and receive at the same time, but can switch between sending and receiving.

Creates a send object

Sends the value as an NEC-format IR code. bits specifies the length of the code, typically 16.

Sends the value as a Sony-format IR code.

Sends the value as a RC5-format IR code.

Sends the value as a RC6-format IR code.

Sends a code corresponding to the buffer of raw durations.

Creates a receiver object.

Starts listening for an IR code.

Returns 1 if there is a received code available, and 0 otherwise.
The fields of results are:

This must be called after irrecv.decode() to resume listening for a code.