13_IR_Exercise.md

13. Example solution for exercise from (12_IR)

Lets look at key elements of the program.

Source highlights

4 files were added:

Feature\IRInFeatureController.h
Feature\IRInFeatureController.cpp
Feature\IROutFeatureController.h
Feature\IROutFeatureController.cpp

The IRInFeatureController class handles the IR receiver. It imports the IRremoteESP8266.h library and uses the IRrecv class. The loop() method captures any IR signals and outputs to serial.

The IROutFeatureController class handles the IR transceiver. It uses the IRsend class to handle the command send. The handles incoming commands and translates them into IR signals in the Handle() method.

Lastly the MainApp constructor instantiates and configures ports/pins of the new IR features.

Running the sample

When the device starts it publishes the device description:

[MainApp] Sending DeviceDescription...
[MQTT] Publish to topic: 'register', message: '{"deviceId":"my_device_id","features":[{"port":4,"type":"switch"},{"port":5,"type":"switch"},{"port":1,"type":"led"},
{"port":6,"type":"temperatureSensor"},{"port":6,"type":"humiditySensor"},{"port":7,"type":"motionSensor"},{"port":8,"type":"irIn"},{"port":9,"type":"irOut"}]}'

When POWER button is pressed on the LED remote, our device outputs:

[IR-in] Encoding  : NEC
[IR-in] Code      : FF18E7 (32 bits)
[IR-in] Encoding  : NEC
[IR-in] Code      : FFFFFFFF (0 bits)