#include <SoftwareSerial.h>

#include <Adafruit_NeoPixel.h>

#ifdef __AVR__

#include <avr/power.h>

#endif

#define PIN            10

#define NUMPIXELS      24

#define rxPin 4

#define txPin 3

SoftwareSerial BT(txPin, rxPin);

Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);

int delayval = 50; // delay for half a second

void setup() {

  BT.begin(9600);

  Serial.begin(9600);

  pixels.begin(); // This initializes the NeoPixel library.

}

void loop() {

  if (BT.available() >0)

  {

    //Receive values from Notiduino Android App whenever it gets notification messages

    //Use semicolon and comma as seperator to retrieve header message and RGB color value

    String BT_receive_data = BT.readStringUntil((char)3);

    String Message_Head = getValue(BT_receive_data, ';', 0);

    String ColorValue = getValue(BT_receive_data, ';', 1);

    int R = getValue(ColorValue, ',', 0).toInt();

    int G = getValue(ColorValue, ',', 1).toInt();

    int B = getValue(ColorValue, ',', 2).toInt();

    Serial.println(Message_Head);

    Serial.println(ColorValue);

      for (int i = 0; i<NUMPIXELS; i++)

      {

        pixels.setPixelColor(i, pixels.Color(R, G, B)); // Moderately bright green color.

        pixels.show(); // This sends the updated pixel color to the hardware.

        delay(10);

        pixels.setPixelColor(i, pixels.Color(0, 0, 0));

      }

  }

}

#pragma region get Value

String getValue(String data, char separator, int index)

{

  int found = 0;

  int strIndex[] = { 0, -1 };

  int maxIndex = data.length() - 1;

  for (int i = 0; i <= maxIndex && found <= index; i++){

    if (data.charAt(i) == separator || i == maxIndex){

      found++;

      strIndex[0] = strIndex[1] + 1;

      strIndex[1] = (i == maxIndex) ? i + 1 : i;

    }

  }

  return found > index ? data.substring(strIndex[0], strIndex[1]) : "";

}

#pragma endregion

#define OLED_Address 0x3C

Adafruit_SSD1306 oled(1);

int x=0;

int lastx=0;

int lasty=0;

int LastTime=0;

bool BPMTiming=false;

bool BeatComplete=false;

int BPM=0;

#define UpperThreshold 550

#define LowerThreshold 500

void setup() {

  oled.begin(SSD1306_SWITCHCAPVCC, OLED_Address);

  oled.clearDisplay();

  oled.setTextSize(2);

}

void loop()

{

  if(x>127) 

  {

    oled.clearDisplay();

    x=0;

    lastx=x;

  }

  int value=analogRead(0);

  oled.setTextColor(WHITE);

  int y=60-(value/16);

  oled.writeLine(lastx,lasty,x,y,WHITE);

  lasty=y;

  lastx=x;

  // calc bpm

  if(value>UpperThreshold)

  {

    if(BeatComplete)

    {

      BPM=millis()-LastTime;

      BPM=int(60/(float(BPM)/1000));

      BPMTiming=false;

      BeatComplete=false;

    }

    if(BPMTiming==false)

    {

      LastTime=millis();

      BPMTiming=true;

    }

  }

  if((value<LowerThreshold)&(BPMTiming))

    BeatComplete=true;

    // display bpm

  oled.writeFillRect(0,50,128,16,BLACK);

  oled.setCursor(0,50);

  oled.print(BPM);

  oled.print(" BPM");

  oled.display();

  x++;

}

#include<SoftwareSerial.h>

SoftwareSerial Serial1(10, 11);

#include <SPI.h>

#include <Wire.h>

#include <Adafruit_GFX.h>

#include "Adafruit_SSD1306.h"

#define OLED_RESET 4

Adafruit_SSD1306 display(OLED_RESET);

#define NUMFLAKES 10

#define XPOS 0

#define YPOS 1

#define DELTAY 2

#define LOGO16_GLCD_HEIGHT 16

#define LOGO16_GLCD_WIDTH  16

String str = "";

byte h = 0;

byte m = 0;

byte S = 0;

String dmy, time, network, battery, inNumber, s;

byte centerX = 24;

byte centerY = 39;

byte Radius = 24;

double RAD = 3.141592 / 180;

double LR = 89.99;

void showTimeAnalog(int center_x, int center_y, double pl1, double pl2, double pl3)

{

  double x1, x2, y1, y2;

  x1 = center_x + (Radius * pl1) * cos((6 * pl3 + LR) * RAD);

  y1 = center_y + (Radius * pl1) * sin((6 * pl3 + LR) * RAD);

  x2 = center_x + (Radius * pl2) * cos((6 * pl3 - LR) * RAD);

  y2 = center_y + (Radius * pl2) * sin((6 * pl3 - LR) * RAD);

  display.drawLine((int)x1, (int)y1, (int)x2, (int)y2, WHITE);

}

void digitalClock()

{

  display.setTextSize(1);

  display.setTextColor(WHITE);

  display.setCursor(60, 20);

  display.println(dmy);

  display.setTextSize(2);

  display.setCursor(60, 30);

  display.println(time);

  display.display();

  delay(2000);

}