Energy Efficient Blinds

#include <DS18B20.h>
#include <math.h>

const int      MAXRETRY          = 4;
const uint32_t msSAMPLE_INTERVAL = 2500;
const uint32_t msMETRIC_PUBLISH  = 30000;

DS18B20  ds18b20(D0, true); //Sets Pin D2 for Temp Sensor and 
                            // this is the only sensor on bus
char     szInfo[64];
int Outside;

double   celsius;
double   Inside;
double   Close_Curtain_Threshold = 0; 
uint32_t msLastMetric;
uint32_t msLastSample;
int servoPin = A5;
int rssival = 0;
Servo CurtainServo;
int servoPos = 0;
const String key = "FOM7BJ4R1JOZG2KE";
void myHandler(const char *event, const char *data){
    
    String strdata = String(data); 
      Outside = strdata.toInt();  
}


void setup() {
  Time.zone(-5);
  Particle.variable("Inside_Temp", Inside);
  Particle.variable("Outside_Temp", Outside );
 
  Particle.variable("Curtain", Close_Curtain_Threshold );
   Particle.subscribe("Outside_Temp_M3171_18", myHandler);
  Serial.begin(115200);
    CurtainServo.attach( A5 );
      Particle.function("servo", servoControl);

}

void loop() {
  if (millis() - msLastSample >= msSAMPLE_INTERVAL){
    getTemp();
  }

  if (millis() - msLastMetric >= msMETRIC_PUBLISH){
    Serial.println("Publishing now.");
    publishData();
  }
  

Close_Curtain_Threshold = (Outside - Inside);
 Particle.publish("thingSpeakWrite_All", "{ \"1\": \"" + String(Inside) + "\"," +
       "\"2\": \"" + String(Outside) + "\"," +
       "\"k\": \"" + key + "\" }", 60, PRIVATE);

  delay(30000);
}

void publishData(){
  if(!ds18b20.crcCheck()){      //make sure the value is correct
    return;
  }
  sprintf(szInfo, "%2.2f", Inside);
  Particle.publish("InsideTemp_M3171_18", szInfo, PRIVATE);
  msLastMetric = millis();
}

void getTemp(){
  float _temp;
  int   i = 0;

  do {
    _temp = ds18b20.getTemperature();
  } while (!ds18b20.crcCheck() && MAXRETRY > i++);

  if (i < MAXRETRY) {
    celsius = _temp;
    Inside = ds18b20.convertToFahrenheit(_temp);
    Serial.println(Inside);
  }
  else {
    celsius = Inside = NAN;
    Serial.println("Invalid reading");
  }
  msLastSample = millis();
}


int servoControl(String command)
{
    // Convert
   int newPos = command.toInt();
   // Make sure it is in the right range
   // And set the position
   servoPos = constrain( newPos, 0 , 180);

   // Set the servo
   CurtainServo.write( servoPos );

   // done
   return 1;
}


/*  begin particle webhook code snippit to add to particle webhook interface on console
{
    "event": "thingSpeakWrite_",
    "url": "https://api.thingspeak.com/update",
    "requestType": "POST",
    "form": {
        "api_key": "{{k}}",
        "field1": "{{1}}",
        "field2": "{{2}}",
        "field3": "{{3}}",
        "field4": "{{4}}",
        "field5": "{{5}}",
        "field6": "{{6}}",
        "field7": "{{7}}",
        "field8": "{{8}}",
        "lat": "{{a}}",
        "long": "{{o}}",
        "elevation": "{{e}}",
        "status": "{{s}}"
    },
    "mydevices": true,
    "noDefaults": true
}
*/