Add recording of measurements #5

Transmit data to UART in JSON #7

Node/Node.ino

@@ -23,6 +23,8 @@ using namespace ArduinoJson::Internals;
 
 SI7021 sensor;
 Adafruit_BMP085 bmp;
+StaticJsonBuffer<200> jsonBuffer;
+
 
 void setup() {
 
@@ -112,14 +114,20 @@ void loop() {
  Serial.print("Temp: "); Serial.print(t);
  Serial.print("\tHum: "); Serial.println(RH);
 
- double P = bmp.readPressure() / 100.0;
- Serial.print("Temp: "); Serial.print(bmp.readTemperature()); // Celsius
+ int32_t p = bmp.readPressure();
+ double P = p / 100.0;
+ double bmpTemp = bmp.readTemperature();
+ Serial.print("Temp: "); Serial.print(bmpTemp); // Celsius
  Serial.print("\tPressure: "); Serial.println(P); // Gecto Pascals
 
+ int humudutyTempWeight = 1;
+ int pressureTempWeight = 1;
+ double temperature = (t * humudutyTempWeight + bmpTemp * pressureTempWeight) / (humudutyTempWeight + pressureTempWeight);
+
  double V = 1.0;
  double Rv = 461.5;
 
- double T = 273.15 + t;
+ double T = 273.15 + temperature;
  double e_omega_t = 6.112*exp((17.62*T - 4812.903)/(T - 30.03));
  double f = 1.0016 + 0.00000315*P - 0.074/P;
  double e_omega = e_omega_t*f;
@@ -139,5 +147,30 @@ void loop() {
  Serial.println(" ppm");
  }
 
+ JsonObject& root = jsonBuffer.createObject();
+ root["time"] = currentTime;
+ root["temperature"] = temperature;
+ root["pressure"] = P;
+ root["humidity"] = RH;
+ root.printTo(Serial);
+ char dirName[12];
+ sprintf(dirName, 12, "/%.4i/%.2i/%.2i", tmYearToCalendar(tm.Year), tm.Month, tm.Day)
+ char fileName[25];
+ sprintf(fileName, 25, "/%s/%.2i.csv", dirName, tm.Hour)
+
+ File dataFile;
+ if(!SD.exists(fileName)){
+ if(!SD.mkdir(dirName)){
+ Serial.printf("Failed to create directory %s\r\n", dirName);
+ return;
+ }
+ dataFile = SD.open(buffer, O_WRITE | O_CREAT);
+ }else{
+ dataFile = SD.open(buffer, O_WRITE);
+ }
+
+ dataFile.seek(dataFile.size());
+ dataFile.printf("%i;%i;%i;%.2f;%i;%i\r\n", currentTime, thc.celsiusHundredths, thc.humidityPercent, bmpTemp, p, ppm);
+ dataFile.close();
  Serial.println();
 }