Notification IoT Using NeoPixel and Smartphone

1#include <SoftwareSerial.h>
2#include <Adafruit_NeoPixel.h>
3#ifdef  __AVR__
4#include <avr/power.h>
5#endif
6#define PIN            10
7#define  NUMPIXELS      24
8
9#define rxPin 4
10#define txPin 3
11
12SoftwareSerial  BT(txPin, rxPin);
13Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, PIN,  NEO_GRB + NEO_KHZ800);
14
15int delayval = 50; // delay for half a second
16
17void  setup() {
18  BT.begin(9600);
19  Serial.begin(9600);
20  pixels.begin(); //  This initializes the NeoPixel library.
21}
22
23void loop() {
24  
25  if (BT.available()  >0)
26  {
27
28    //Receive values from Notiduino Android App whenever it gets  notification messages
29    //Use semicolon and comma as seperator to retrieve  header message and RGB color value
30    String BT_receive_data = BT.readStringUntil((char)3);
31    String Message_Head = getValue(BT_receive_data, ';', 0);
32    String ColorValue  = getValue(BT_receive_data, ';', 1);
33    int R = getValue(ColorValue, ',', 0).toInt();
34    int G = getValue(ColorValue, ',', 1).toInt();
35    int B = getValue(ColorValue,  ',', 2).toInt();
36
37    Serial.println(Message_Head);
38    Serial.println(ColorValue);
39
40      for (int i = 0; i<NUMPIXELS; i++)
41      {
42        pixels.setPixelColor(i,  pixels.Color(R, G, B)); // Moderately bright green color.
43        pixels.show();  // This sends the updated pixel color to the hardware.
44        delay(10);
45        pixels.setPixelColor(i, pixels.Color(0, 0, 0));
46      }
47  }
48  
49}
50
51#pragma  region get Value
52String getValue(String data, char separator, int index)
53{
54  int found = 0;
55  int strIndex[] = { 0, -1 };
56  int maxIndex = data.length()  - 1;
57
58  for (int i = 0; i <= maxIndex && found <= index; i++){
59    if (data.charAt(i)  == separator || i == maxIndex){
60      found++;
61      strIndex[0] = strIndex[1]  + 1;
62      strIndex[1] = (i == maxIndex) ? i + 1 : i;
63    }
64  }
65
66  return found > index ? data.substring(strIndex[0], strIndex[1]) : "";
67}
68#pragma  endregion