Arduino IR Transceiver Protocol

OzIRTransceiver is capable to encode and transmit as well as receive and decode different type of remote controller signals. An infrared LED needs to be wired to the microcontroller to transmit signals. To receive signals you should wire an infrared receiver, for example the 1838B. The most widely used application of this device is to read signals from the most popular remote controller brands.

Decoding protocols for receiving:

  • NEC
  • Sony
  • Sanyo
  • Mitsubishi
  • RC5
  • RC6
  • Panasonic
  • LG
  • JVC
  • SAMSUNG
  • Whynter
  • Aiwa RC-T501
  • Denon

Encoding protocols for transmission:
  • RC5
  • RC6
  • NEC
  • Sony
  • Panasonic
  • JVC
  • SAMSUNG
  • Whynter
  • LG

How to build a test circuit with a 1838B infrared IR receiver and an Arduino Mega?
Arduino codes are included.

I. 'Welcome' event from microcontroller

Example

//transmitter device is ready for use
c=welcome&id=tsCbNw&type=OzIRTransceiver&pos=2&name=MyIRTransmitter_1&t=3
//receiver device is ready for use
c=welcome&id=nDf25g&type=OzIRTransceiver&pos=3&name=MyIRReceiver_1&t=4

Parameters

Parameter Type Range Functionality
c String 'welcome' Identifies the welcome message.
id String 6 characters (numbers, uppercase and lowercase characters) The ID of the device which is chosen by the microcontroller.
type String 'OzIRTransceiver' Determines the type of the device.
pos Byte 0-255 Determines the position of the device on the list of the ID manager of the microcontroller. Please make sure there are no other devices in the same position.
name (optional) String e.g. 'MyIRTransmitter_1' You can give default names for devices.
t Byte 0-255 Counts the number of events and responses sent combined. Counts from 0 to 255 then from 0 again.


II. Commands to microcontroller

'send' command

(Only if you use it as a transmitter. It is not used in other cases.)

This command sends any keycode encoded by a selected protocol. If the protocol type is undefined it will use the last set protocol. The default protocol is Panasonic.

Example 

c=send&type=samsung&value=0xe0e0a05f&id=tsCbNw&t=0

Parameters

Parameter Type Range Functionality
c String 'send' Identifies the command.
type
(optional parameter)		 String Supported protocol types:
  • rc5
  • rc6
  • nec
  • sony
  • panasonic
  • jvc
  • samsung
  • whynter
  • lg
The protocol to encode the outgoing signal.
value Unsigned Long Long HEX e.g. :
0xf4d (sony, 12bit)
0xe0e0a05f (samsung, 32bit)
0xdbdbe0e0a05f (panasonic, 48bit)		 The keycode that needs to be transmitted.
id String 6 characters (numbers, uppercase and lowercase characters) The ID of the device which is chosen by the microcontroller.
t Byte 0-255 Counts the number of commands sent. Counts from 0 to 255 then from 0 again.

Response to 'Send'
(Only if you use it as a transmitter. It is not used in other cases.)

After the microcontroller has transferred the infrared signal it will send this response to your computer.

Example 

c=send_resp&type=samsung&value=0xe0e0a05f&id=tsCbNw&t=5
Parameter Type Range Functionality
c String "send_resp" Identifies the response
type String Supported protocol types:
  • rc5
  • rc6
  • nec
  • sony
  • panasonic
  • jvc
  • samsung
  • whynter
  • lg
( 'error' if protocol is unknown )
( 'receiver' if the device is a receiver) 		The protocol of the outgoing signal. This parameter is always used. An 'error' is sent in the response if the type is not supported. Or 'receiver' is sent in the response if the device is a receiver.
value Unsigned Long Long HEX e.g. :
0xf4d (sony, 12bit)
0xe0e0a05f (samsung, 32bit)
0xdbdbe0e0a05f (panasonic, 48bit)		 The keycode that was transmitted. An 'error' string is sent if the length of the HEX is not supported by the protocol.
id String 6 characters (numbers, uppercase and lowercase characters) The ID of the device which is chosen by the microcontroller.
t Byte 0-255 Counts the number of events and responses sent combined. Counts from 0 to 255 then from 0 again.


III. Events from microcontroller

'received' event

(Only if you use it as a receiver. It is not used in other cases.)

This event is called every time a remote controller keycode is received by the infrared receiver. The IR needs to be connected to the microcontroller.

Example

c=received&type=samsung&value=0xe0e0a05f&id=nDf25g&t=6

Parameters

Parameter Type Range Functionality
c String 'received' Identifies the event.
type String Supported protocol types:
  • nec
  • sony
  • sanyo
  • mitsubishi
  • rc5
  • rc6
  • panasonic
  • lg
  • jvc
  • samsung
  • whynter
  • aiwa_rc_t501
  • denon
The protocol that has successfully decoded the incoming signal. The protocol names are always built from lowercase characters.
value Unsigned Long Long HEX e.g. :
0xf4d (sony, 12 bit)
0xe0e0a05f (samsung, 32 bit)
0xdbdbe0e0a05f (panasonic, 48 bit)		 The keycode decoded from the currently received signal.
id String 6 characters (numbers, uppercase and lowercase characters) The ID of the device which is chosen by the microcontroller.
t Byte 0-255 Counts the number of events and responses sent combined. Counts from 0 to 255 then from 0 again.

More information