Stap 4: Code
Nu tijd voor de code, de code vindt u hieronder. U zult de Arduino IDE met de Linkit een plugin voor het uploaden van de code naar de Linkit een vereisen. Na het uploaden van de open te stellen een seriële code controleren op een geschikte Com-poort en plaats nu de hartslag sensor op uw vinger of de tip van je oor en je moet zien de BPM op het scherm weergegeven.
// Variablesint pulsePin = 0; // Pulse Sensor purple wire connected to analog pin 0 int blinkPin = 13; // pin to blink led at each beat int fadePin = 5; // pin to do fancy classy fading blink at each beat int fadeRate = 0; // used to fade LED on with PWM on fadePin // 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. // Regards Serial OutPut -- Set This Up to your needs static boolean serialVisual = false; // Set to 'false' by Default. Re-set to 'true' to see Arduino Serial Monitor ASCII Visual Pulse void setup(){ pinMode(blinkPin,OUTPUT); // pin that will blink to your heartbeat! pinMode(fadePin,OUTPUT); // pin that will fade to your heartbeat! Serial.begin(115200); // we agree to talk fast! 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); } // 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 digitalWrite(blinkPin,HIGH); // Blink LED, we got a beat. 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 } ledFadeToBeat(); // Makes the LED Fade Effect Happen delay(20); // take a break } void ledFadeToBeat(){ fadeRate -= 15; // set LED fade value fadeRate = constrain(fadeRate,0,255); // keep LED fade value from going into negative numbers! analogWrite(fadePin,fadeRate); // fade LED }
