add rgb led example

Author: toddtreece

examples/adafruitio_13_rgb/adafruitio_13_rgb.ino

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+// Adafruit IO RGB LED Output Example
+//
+// Adafruit invests time and resources providing this open source code.
+// Please support Adafruit and open source hardware by purchasing
+// products from Adafruit!
+//
+// Written by Todd Treece for Adafruit Industries
+// Copyright (c) 2016-2017 Adafruit Industries
+// Licensed under the MIT license.
+//
+// All text above must be included in any redistribution.
+
+/************************** Configuration ***********************************/
+
+// edit the config.h tab and enter your Adafruit IO credentials
+// and any additional configuration needed for WiFi, cellular,
+// or ethernet clients.
+#include "config.h"
+
+/************************ Example Starts Here *******************************/
+
+// default PWM pins for ESP8266.
+// you should change these to match PWM pins on other platforms.
+#define RED_PIN   4
+#define GREEN_PIN 5
+#define BLUE_PIN  2
+
+// set up the 'color' feed
+AdafruitIO_Feed *color = io.feed("color");
+
+void setup() {
+
+  // start the serial connection
+  Serial.begin(115200);
+
+  // wait for serial monitor to open
+  while(! Serial);
+
+  // connect to io.adafruit.com
+  Serial.print("Connecting to Adafruit IO");
+  io.connect();
+
+  // set up a message handler for the 'color' feed.
+  // the handleMessage function (defined below)
+  // will be called whenever a message is
+  // received from adafruit io.
+  color->onMessage(handleMessage);
+
+  // wait for a connection
+  while(io.status() < AIO_CONNECTED) {
+    Serial.print(".");
+    delay(500);
+  }
+
+  // we are connected
+  Serial.println();
+  Serial.println(io.statusText());
+
+  // set analogWrite range for ESP8266
+  #ifdef ESP8266
+    analogWriteRange(255);
+  #endif
+
+}
+
+void loop() {
+
+  // io.run(); is required for all sketches.
+  // it should always be present at the top of your loop
+  // function. it keeps the client connected to
+  // io.adafruit.com, and processes any incoming data.
+  io.run();
+
+}
+
+// this function is called whenever a 'color' message
+// is received from Adafruit IO. it was attached to
+// the color feed in the setup() function above.
+void handleMessage(AdafruitIO_Data *data) {
+
+  // print RGB values and hex value
+  Serial.println("Received:");
+  Serial.print("  - R: ");
+  Serial.println(data->toRed());
+  Serial.print("  - G: ");
+  Serial.println(data->toGreen());
+  Serial.print("  - B: ");
+  Serial.println(data->toBlue());
+  Serial.print("  - HEX: ");
+  Serial.println(data->value());
+
+  // invert RGB values for common anode LEDs
+  analogWrite(RED_PIN, 255 - data->toRed());
+  analogWrite(GREEN_PIN, 255 - data->toGreen());
+  analogWrite(BLUE_PIN, 255 - data->toBlue());
+
+}

examples/adafruitio_13_rgb/config.h

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+/************************ Adafruit IO Config *******************************/
+
+// visit io.adafruit.com if you need to create an account,
+// or if you need your Adafruit IO key.
+#define IO_USERNAME    "your_username"
+#define IO_KEY         "your_key"
+
+/******************************* WIFI **************************************/
+
+// the AdafruitIO_WiFi client will work with the following boards:
+//   - HUZZAH ESP8266 Breakout -> https://www.adafruit.com/products/2471
+//   - Feather HUZZAH ESP8266 -> https://www.adafruit.com/products/2821
+//   - Feather M0 WiFi -> https://www.adafruit.com/products/3010
+//   - Feather WICED -> https://www.adafruit.com/products/3056
+
+#define WIFI_SSID       "your_ssid"
+#define WIFI_PASS       "your_pass"
+
+// comment out the following two lines if you are using fona or ethernet
+#include "AdafruitIO_WiFi.h"
+AdafruitIO_WiFi io(IO_USERNAME, IO_KEY, WIFI_SSID, WIFI_PASS);
+
+
+/******************************* FONA **************************************/
+
+// the AdafruitIO_FONA client will work with the following boards:
+//   - Feather 32u4 FONA -> https://www.adafruit.com/product/3027
+
+// uncomment the following two lines for 32u4 FONA,
+// and comment out the AdafruitIO_WiFi client in the WIFI section
+// #include "AdafruitIO_FONA.h"
+// AdafruitIO_FONA io(IO_USERNAME, IO_KEY);
+
+
+/**************************** ETHERNET ************************************/
+
+// the AdafruitIO_Ethernet client will work with the following boards:
+//   - Ethernet FeatherWing -> https://www.adafruit.com/products/3201
+
+// uncomment the following two lines for ethernet,
+// and comment out the AdafruitIO_WiFi client in the WIFI section
+// #include "AdafruitIO_Ethernet.h"
+// AdafruitIO_Ethernet io(IO_USERNAME, IO_KEY);