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leptos_SD_RTC_GAS_PM.ino

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+// Leptos is an ongoing project developed whith love at the Arduinna lab of Calafou.org
+
+#include "FS.h"
+#include "SD.h"
+#include "SPI.h"
+#include "RTClib.h"
+#include <Wire.h>
+#include "MutichannelGasSensor.h"
+#include <PMserial.h>
+
+SerialPM pms(PMSx003, Serial);  // PMS5003 dust sensor
+RTC_DS3231 rtc;                 // Real time clock 
+
+  String print_time(DateTime timestamp) {    //Strings make managing data easily
+  char message[120];
+
+  int Year = timestamp.year();
+  int Month = timestamp.month();
+  int Day = timestamp.day();
+  int Hour = timestamp.hour();
+  int Minute = timestamp.minute();
+  int Second= timestamp.second();
+
+  sprintf(message, "%d-%d-%d %02d:%02d:%02d", Year, Month,Day,Hour,Minute,Second);
+  
+  return message;
+}
+
+//////// SD card //////////
+
+void appendFile(fs::FS &fs, const char * path, const char * message){
+    Serial.printf("Writing Leptos data to file: %s\n", path);
+
+    File file = fs.open(path, FILE_APPEND);
+    
+    if(!file){
+        Serial.println("Failed to open file for writing");
+        return;
+    }
+    if(file.print(message)){
+        Serial.println("Data written correctly");
+    } else {
+        Serial.println("Writing failed");
+    }
+    file.close();
+}
+
+void setup(){
+  Serial.begin(9600);
+  gas.begin(0x04);    // Initialize gas sensor
+  gas.powerOn();  
+  pms.init();         // Initialize dust sensor
+  
+  if(!SD.begin()){
+      Serial.println("Card Mount Failed");
+      return;
+      }
+
+  if (! rtc.begin()) {
+    Serial.println("Couldn't find RTC");
+    while (1);
+    }
+
+  if (!rtc.lostPower()) {
+    Serial.println("RTC lost power, lets set the time!");
+    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
+  }
+  
+  appendFile(SD, "/leptos_log.txt", "Date and time - NO2 - CO- PM1 - PM2.5 - PM10\r\n");
+}
+
+void loop(){
+
+  String dataString = "";
+
+  float no2 = gas.measure_NO2();   // Values written to the SD card: 
+  float co = gas.measure_CO();     // Date and time, Nitrogen dioxide (NO2), Carbon monoxide (CO) and PM1, PM2.5 and PM10 dust partic9/les
+  float pm01 = pms.pm01;
+  float pm25 = pms.pm25;
+  float pm10 = pms.pm10;
+  
+  DateTime now = rtc.now();
+  pms.read();                   // read the PM sensor
+
+  dataString += String(print_time(now));  
+  dataString += ",";
+  dataString += String(no2);
+  dataString += ",";
+  dataString += String(co);
+  dataString += ",";
+  dataString += String(pm01);
+  dataString += ",";
+  dataString += String(pm25);
+  dataString += ",";
+  dataString += String(pm10);
+  dataString += "\r\n";
+
+Serial.print(now.year());
+  Serial.print('/');
+  Serial.print(now.month());
+  Serial.print('/');
+  Serial.print(now.day());
+  Serial.print(" -- ");
+  Serial.print(now.hour());
+  Serial.print(':');
+  Serial.print(now.minute());
+  Serial.print(':');
+  Serial.print(now.second());
+  Serial.println();
+  
+  no2 = gas.measure_NO2();
+  Serial.print("Concentration of NO2: ");
+  if(no2>=0) Serial.print(no2);
+  else Serial.print("invalid");
+  Serial.println(" ppm");
+
+  co = gas.measure_CO();
+  Serial.print("Concentration of CO: ");
+  if(co>=0) Serial.print(co);
+  else Serial.print("invalid");
+  Serial.println(" ppm");
+
+  pm01 = pms.pm01;
+  Serial.print("Concentration of PM1: ");
+  if(pm01>=0) Serial.print(pm01);
+  else Serial.print("invalid");
+  Serial.println(" ug/m3");
+
+  pm25 = pms.pm25;
+  Serial.print("Concentration of PM25: ");
+  if(pm25>=0) Serial.print(pm25);
+  else Serial.print("invalid");
+  Serial.println(" ug/m3");
+
+  pm10 = pms.pm10;
+  Serial.print("Concentration of PM10: ");
+  if(pm10>=0) Serial.print(pm10);
+  else Serial.print("invalid");
+  Serial.println(" ug/m3");
+  Serial.println();
+
+  appendFile(SD, "/leptos_log.txt", dataString.c_str()); // Save data to SD card
+
+  Serial.println();
+  Serial.println();
+
+      
+  delay(3000);
+}