Added Value - abner722/BUM-Fitness-Pal GitHub Wiki

#include <Wire.h>
#include <Adafruit_MMA8451.h>
#include <Adafruit_Sensor.h>

#define speakerInput 8 
#define muscleSensorIn A1 
//  Variables
int blinkPin = 13;
int fadePin = 5;
int pulsePin = 0;
int fadeRate = 0;


const int numReadings = 50;
int analogReadings[numReadings];
double total = 0;
double average = 0;
int readIndex = 0;

Adafruit_MMA8451 mma = Adafruit_MMA8451();

double xval = 0.0;
double yval = 0.0;
double zval = 0.0; 

double xval2 = 0.0;
double yval2 = 0.0;
double zval2 = 0.0; 

int steps = 0;

double x_diff = 0;
double y_diff = 0;

// Volatile Variables, used in the interrupt service routine!
volatile int BPM;                   // int that holds raw Analog in 0. updated every 2mS
volatile int Signal;                // holds the incoming raw data
volatile int IBI = 600;             // int that holds the time interval between beats! Must be seeded! 
volatile boolean Pulse = false;     // "True" when User's live heartbeat is detected. "False" when not a "live beat". 
volatile boolean QS = false;        // becomes true when Arduoino finds a beat.

#include <LiquidCrystal.h>
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
// Regards Serial OutPut  -- Set This Up to your needs
static boolean serialVisual = true;   // Set to 'false' by Default.  Re-set to 'true' to see Arduino Serial Monitor  


void setup(){
pinMode(blinkPin,OUTPUT);         // pin that will blink to your heartbeat!
pinMode(fadePin,OUTPUT);          // pin that will fade to your heartbeat!
Serial.begin(9600);             // we agree to talk fast! //115200
interruptSetup();                 // sets up to read Pulse Sensor signal every 2mS 
// IF YOU ARE POWERING The Pulse Sensor AT VOLTAGE LESS THAN THE BOARD VOLTAGE, 
// UN-COMMENT THE NEXT LINE AND APPLY THAT VOLTAGE TO THE A-REF PIN
//   analogReference(EXTERNAL);   

for(int thisReading = 0; thisReading < numReadings; thisReading++){
analogReadings[thisReading] = 0;
}

lcd.begin(16,2);
lcd.print("Steps: "); 
lcd.setCursor(0,1);
lcd.print("Heartrate: ");
//lcd.setCursor(1, 13);
//lcd.print("BPM");

pinMode(speakerInput, OUTPUT); 
pinMode(muscleSensorIn, INPUT);

Serial.println("Adafruit MMA8451 test!");


if (! mma.begin()) {
Serial.println("Couldnt start");
while (1);
}
Serial.println("MMA8451 found!");

mma.setRange(MMA8451_RANGE_2_G);

//lcd.print(BPM);   was using the hello world lcd display example code
}


//  Where the Magic Happens
void loop(){

serialOutput() ;       

 if (QS == true){     // A Heartbeat Was Found
                   // BPM and IBI have been Determined
                   // Quantified Self "QS" true when arduino finds a heartbeat
    //fadeRate = 255;         // Makes the LED Fade Effect Happen
                            // Set 'fadeRate' Variable to 255 to fade LED with pulse
    serialOutputWhenBeatHappens();   // A Beat Happened, Output that to serial.  
   
     
    
    QS = false;                      // reset the Quantified Self flag for next time    
}

// %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
mma.read();

sensors_event_t event;
sensors_event_t event2; 
mma.getEvent(&event);
mma.getEvent(&event2);
xval = event.acceleration.x;
yval = event.acceleration.y;
zval = event.acceleration.z;
                                //This code was used to keep track of the steps the user has taken
xval2 = event2.acceleration.x;    //Two acceleration events were tracked, and then the difference of the acceleration                              
yval2 = event2.acceleration.y;  // was calculated. This was used as a threshold for our steps tracker.
zval2 = event2.acceleration.z;

x_diff = xval2 - xval;
x_diff = abs(x_diff);
y_diff = yval2 - yval;
y_diff = abs(y_diff);

if(y_diff > 0.75){
steps = steps + 1;
}
if(x_diff > 0.75){
steps = steps + 1;
}  
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   

//************************************************************
total = total - analogReadings[readIndex];
analogReadings[readIndex] = analogRead(muscleSensorIn);
total = total + analogReadings[readIndex];
readIndex = readIndex + 1;

if(readIndex >= numReadings){
readIndex = 0;
}
average = 5*(total/numReadings)/1023; //This block of code is used to smoothe out the analog
                                      // signal received from the muscle sensor
Serial.println(average);
delay(20); 

if(average > 2.5){                      //The average is converted to a voltage rating of 5V and if the average was         above  above 2.5, then the speaker will play music
digitalWrite(speakerInput, LOW);
}
else {
  digitalWrite(speakerInput, HIGH); 
  }
//*************************************************************      
  lcd.setCursor(7, 0); 
  lcd.print(steps);
  lcd.setCursor(10, 1);          //Printing data to the LCD
  lcd.print(BPM);
 delay(200);
 
 }