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nodemcu.cpp
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nodemcu.cpp
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#include <WiFiUdp.h>
#include <NTPClient.h>
#include <ESP8266WiFi.h>
#include <FirebaseESP8266.h>
#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include "MAX30100_PulseOximeter.h"
#define WIFI_SSID "VV"
#define WIFI_PASSWORD "matematika"
#define DATABASE_URL "database-mikro-default-rtdb.firebaseio.com"
#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels
#define OLED_RESET -1 // Reset pin # (or -1 if sharing Arduino reset pin)
#define SCREEN_ADDRESS 0x3C ///< See datasheet for Address; 0x3D for 128x64, 0x3C for 128x32
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
#define NUMFLAKES 10 // Number of snowflakes in the animation example
#define LOGO_HEIGHT 16
#define LOGO_WIDTH 16
#define REPORTING_PERIOD_MS 1000
PulseOximeter pox;
WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, "pool.ntp.org");
FirebaseData fbdo;
FirebaseAuth auth;
FirebaseConfig config;
String path = "/database/";
uint32_t tsLastReport = 0;
String lastpos;
unsigned long epochTime; // Variable to save current epoch time
#define arrSize 60 // size to store data for 1 minutes
float databpm[arrSize];
float dataspo2[arrSize];
float avgbpm,avgspo2;
int i = 0;
unsigned long realtimeDelay = 0;
unsigned long finalDelay = 0;
int state = 0; // controller scan
unsigned long currentMillis;
const unsigned char bitmap [] PROGMEM=
{
0x00, 0x00, 0x00, 0x00, 0x01, 0x80, 0x18, 0x00, 0x0f, 0xe0, 0x7f, 0x00, 0x3f, 0xf9, 0xff, 0xc0,
0x7f, 0xf9, 0xff, 0xc0, 0x7f, 0xff, 0xff, 0xe0, 0x7f, 0xff, 0xff, 0xe0, 0xff, 0xff, 0xff, 0xf0,
0xff, 0xf7, 0xff, 0xf0, 0xff, 0xe7, 0xff, 0xf0, 0xff, 0xe7, 0xff, 0xf0, 0x7f, 0xdb, 0xff, 0xe0,
0x7f, 0x9b, 0xff, 0xe0, 0x00, 0x3b, 0xc0, 0x00, 0x3f, 0xf9, 0x9f, 0xc0, 0x3f, 0xfd, 0xbf, 0xc0,
0x1f, 0xfd, 0xbf, 0x80, 0x0f, 0xfd, 0x7f, 0x00, 0x07, 0xfe, 0x7e, 0x00, 0x03, 0xfe, 0xfc, 0x00,
0x01, 0xff, 0xf8, 0x00, 0x00, 0xff, 0xf0, 0x00, 0x00, 0x7f, 0xe0, 0x00, 0x00, 0x3f, 0xc0, 0x00,
0x00, 0x0f, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
void onBeatDetected()
{
Serial.println("Beat!");
display.drawBitmap( 60, 20, bitmap, 28, 28, 1);
display.display();
}
// get stats use to control sensor
int getState(){
int state;
Serial.print("Mencoba membaca perintah : ");
if(Firebase.getInt(fbdo, path + "state")){
if(fbdo.dataTypeEnum() == fb_esp_rtdb_data_type_integer){
state = fbdo.intData();
Serial.println(state);
}
}
if(state < 0) state = 0;
return state;
}
// Function get current epoch time
unsigned long getTime() {
timeClient.update();
Serial.print("Mencoba mengambil timestamp: ");
unsigned long now = timeClient.getEpochTime();
Serial.println(now);
return now;
}
void setup() {
Serial.begin(9600);
SPI.begin();
WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
Serial.print("Connecting to Wi-Fi");
while (WiFi.status() != WL_CONNECTED)
{
Serial.print(".");
delay(300);
}
Serial.println();
Serial.print("Connected with IP: ");
Serial.println(WiFi.localIP());
Serial.println();
config.database_url = DATABASE_URL;
config.signer.test_mode = true;
Firebase.reconnectWiFi(true);
Firebase.begin(&config, &auth);
Serial.printf("Firebase Client v%s\n\n", FIREBASE_CLIENT_VERSION);
delay(2000);
timeClient.begin();
if(!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) {
Serial.println(F("SSD1306 allocation failed"));
for(;;); //loop forever
}
display.display();
delay(2000); // Pause for 2 seconds
// Clear the buffer
display.clearDisplay();
display.setTextSize(1);
display.setTextColor(1);
display.setCursor(0, 0);
display.println("Initializing pulse oximeter..");
display.display();
Serial.print("Initializing pulse oximeter..");
bool startPox = pox.begin();
if (!startPox) {
Serial.println("FAILED");
display.clearDisplay();
display.setTextSize(1);
display.setTextColor(1);
display.setCursor(0, 0);
display.println("FAILED");
display.display();
for(;;);
} else {
display.clearDisplay();
display.setTextSize(1);
display.setTextColor(1);
display.setCursor(0, 0);
display.println("SUCCESS");
display.display();
Serial.println("SUCCESS");
}
pox.setOnBeatDetectedCallback(onBeatDetected);
}
void loop() {
currentMillis = millis();
if(state == 1){
pox.update();
if (currentMillis - tsLastReport > REPORTING_PERIOD_MS) {
Serial.print("Heart BPM:");
Serial.print(pox.getHeartRate());
Serial.println();
Serial.print("Oxygen Percent:");
Serial.print(pox.getSpO2());
Serial.println("\n");
display.clearDisplay();
display.setTextSize(1);
display.setTextColor(1);
display.setCursor(0,16);
display.println(pox.getHeartRate());
display.setTextSize(1);
display.setTextColor(1);
display.setCursor(0, 0);
display.println("Heart BPM");
display.setTextSize(1);
display.setTextColor(1);
display.setCursor(0, 30);
display.println("Spo2");
display.setTextSize(1);
display.setTextColor(1);
display.setCursor(0,45);
display.println(pox.getSpO2());
display.display();
databpm[i] = pox.getHeartRate();
dataspo2[i] = pox.getSpO2();
//send realtime to firebase
if(currentMillis - realtimeDelay > 4000 ){
if(databpm[i] > 0 && dataspo2[i] > 0){
Serial.println("Mencoba mengirim hasil realtime ke firebase...");
String fullPathBPM = path + "data/"+ lastpos + "/bpm";
String fullPathSpo2 = path + "data/"+ lastpos + "/spo2";
Serial.println("Path BPM "+fullPathBPM);
Serial.println("Path SpO2 "+fullPathSpo2);
bool setbpm = Firebase.setFloat(fbdo, fullPathBPM, databpm[i]);
bool setOxi = Firebase.setFloat(fbdo, fullPathSpo2, dataspo2[i]);
if(setbpm && setOxi){
Serial.println("Sukses mengirim data ke firebase!");
}else{
Serial.println(fbdo.errorReason());
}
pox.begin();
}
realtimeDelay = currentMillis;
}
tsLastReport = currentMillis;
i++;
}
// send final result to firebase
if(currentMillis - finalDelay >= 60000 ){
i = 0;
avgbpm = 0;
avgspo2 = 0;
int successTes = 0;
for(int j = 0; j < 60; j++){
if(databpm[j] <= 0 && dataspo2[j] <= 0){
//do nothing
}else{
avgbpm += databpm[j];
avgspo2 += dataspo2[j];
successTes++;
}
}
avgbpm /= successTes;
avgspo2 /= successTes;
Serial.print("AVG Heart BPM:");
Serial.print(avgbpm);
Serial.println();
Serial.print("Oxygen Percent:");
Serial.print(avgspo2);
Serial.println();
if(avgbpm != 0 && avgspo2 != 0){
Serial.println("Mencoba mengirim hasil final ke firebase...");
String fullPathBPM = path + "data/"+ lastpos + "/bpm";
String fullPathSpo2 = path + "data/"+ lastpos + "/spo2";
Serial.println("Path BPM "+fullPathBPM);
Serial.println("Path SpO2 "+fullPathSpo2);
bool setbpm = Firebase.setFloat(fbdo, fullPathBPM, avgbpm);
bool setOxi = Firebase.setFloat(fbdo, fullPathSpo2, avgspo2);
if(setbpm && setOxi){
Serial.println("Sukses mengirim data ke firebase!");
}else{
Serial.println(fbdo.errorReason());
}
}
state = 0;
finalDelay = currentMillis;
}
}else{
state = getState();
if(state == 1){
epochTime = getTime();
lastpos = String(epochTime);
pox.begin();
currentMillis = 0;
}
}
}