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#include <Wire.h>
#include "MAX30100_PulseOximeter.h"
#include "DecisionTree.h"
#include <OneWire.h>
#include <DallasTemperature.h>
Eloquent::ML::Port::DecisionTree health_Classifier;
#define DS18B20 4
// Initialize the PulseOximeter library
PulseOximeter pox;
#define REPORTING_PERIOD_MS 1000
uint32_t tsLastReport = 0;
// Variable Declaration
float bodytemperature;
int BPM;
float SpO2;
int prediction;
// Callback (registered below) fired when a pulse is detected
void onBeatDetected() {
Serial.println("Beat!");
}
// Define the struct for holding heart rate and SpO2 values
struct HeartRateData {
float BPM;
float SpO2;
};
// Declare the heart_rate function
HeartRateData heart_rate();
HeartRateData heart_rate() {
pox.update();
HeartRateData data;
data.BPM = pox.getHeartRate();
data.SpO2 = pox.getSpO2();
return data;
}
OneWire oneWire(DS18B20);
DallasTemperature sensors(&oneWire);
void setup() {
Serial.begin(115200);
Serial.print("Initializing pulse oximeter..");
if (!pox.begin()) {
Serial.println("FAILED");
for (;;);
}
else {
Serial.println("SUCCESS");
}
pox.setOnBeatDetectedCallback(onBeatDetected);
}
void loop() {
delay(500);
pox.update();
sensors.requestTemperatures();
HeartRateData data = heart_rate();
if (millis() - tsLastReport > REPORTING_PERIOD_MS) {
Serial.print("Heart rate: ");
Serial.print(data.BPM);
Serial.print(" bpm / SpO2: ");
Serial.print(data.SpO2);
Serial.println(" %");
}
bodytemperature = sensors.getTempCByIndex(0);
Serial.print(bodytemperature);
// Predict the health condition
float input[3] = { data.BPM, (float)bodytemperature, data.SpO2 };
prediction = health_Classifier.predict(input);
// Checking Condition
Serial.print("Prediction: ");
switch (prediction) {
case 0:
Serial.println("Normal");
break;
case 1:
Serial.println("Serious");
break;
case 2:
Serial.println("Dischargeable");
break;
default:
Serial.println("Unknown");
break;
}
tsLastReport = millis();
Serial.println();
delay(1000);
}
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