DIYables IR Controller - DIYables_IRcontroller_21.getKey()

Description

Check if there is a key pressed on 21-key IR remote controller and received by IR receiver.

Syntax

Key21 getKey();

Parameters

None

Return

Key21::NONE: if there is no key presed on IR controller and received by IR receiver.
One of the following values corresponding with the key on the IR remote controller:

Key21::KEY_CH_MINUS
Key21::KEY_CH
Key21::KEY_CH_PLUS
Key21::KEY_PREV
Key21::KEY_NEXT
Key21::KEY_PLAY_PAUSE
Key21::KEY_VOL_MINUS
Key21::KEY_VOL_PLUS
Key21::KEY_EQ
Key21::KEY_100_PLUS
Key21::KEY_200_PLUS
Key21::KEY_0
Key21::KEY_1
Key21::KEY_2
Key21::KEY_3
Key21::KEY_4
Key21::KEY_5
Key21::KEY_6
Key21::KEY_7
Key21::KEY_8
Key21::KEY_9

Key21::UNKNOWN: if it received a key that is not from the 21-key IR remote controller

Example

Hardware Required

1	×	Official Arduino Uno
1	×	Alternatively, DIYables STEM V3, Fully Compatible with Arduino Uno R3
1	×	USB 2.0 cable type A/B
1	×	IR Kit (Remote Controller and Receiver)
1	×	CR2025 Battery
1	×	Jumper Wires

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Wiring Diagram

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Arduino Code

/* Created by DIYables This example code is in the public domain Product page: https://diyables.io/products/infrared-ir-remote-control-kit-with-21-key-controller-and-receiver */ #include <DIYables_IRcontroller.h> // DIYables_IRcontroller library #define IR_RECEIVER_PIN 7 // The Arduino pin connected to IR controller DIYables_IRcontroller_21 irController(IR_RECEIVER_PIN, 200); // debounce time is 200ms void setup() { Serial.begin(9600); irController.begin(); } void loop() { Key21 command = irController.getKey(); if (command != Key21::NONE) { switch (command) { case Key21::KEY_CH_MINUS: Serial.println("CH-"); // TODO: YOUR CONTROL break; case Key21::KEY_CH: Serial.println("CH"); // TODO: YOUR CONTROL break; case Key21::KEY_CH_PLUS: Serial.println("CH+"); // TODO: YOUR CONTROL break; case Key21::KEY_PREV: Serial.println("<<"); // TODO: YOUR CONTROL break; case Key21::KEY_NEXT: Serial.println(">>"); // TODO: YOUR CONTROL break; case Key21::KEY_PLAY_PAUSE: Serial.println(">||"); // TODO: YOUR CONTROL break; case Key21::KEY_VOL_MINUS: Serial.println("–"); // TODO: YOUR CONTROL break; case Key21::KEY_VOL_PLUS: Serial.println("+"); // TODO: YOUR CONTROL break; case Key21::KEY_EQ: Serial.println("EQ"); // TODO: YOUR CONTROL break; case Key21::KEY_100_PLUS: Serial.println("100+"); // TODO: YOUR CONTROL break; case Key21::KEY_200_PLUS: Serial.println("200+"); // TODO: YOUR CONTROL break; case Key21::KEY_0: Serial.println("0"); // TODO: YOUR CONTROL break; case Key21::KEY_1: Serial.println("1"); // TODO: YOUR CONTROL break; case Key21::KEY_2: Serial.println("2"); // TODO: YOUR CONTROL break; case Key21::KEY_3: Serial.println("3"); // TODO: YOUR CONTROL break; case Key21::KEY_4: Serial.println("4"); // TODO: YOUR CONTROL break; case Key21::KEY_5: Serial.println("5"); // TODO: YOUR CONTROL break; case Key21::KEY_6: Serial.println("6"); // TODO: YOUR CONTROL break; case Key21::KEY_7: Serial.println("7"); // TODO: YOUR CONTROL break; case Key21::KEY_8: Serial.println("8"); // TODO: YOUR CONTROL break; case Key21::KEY_9: Serial.println("9"); // TODO: YOUR CONTROL break; default: Serial.println("WARNING: undefined command:"); break; } } }