Intel Edison threshold WiFi Grapher

/*
  digital input, digital output, serial output

 Reads an analog input pin, maps the result to a range from 0 to 255
 and uses the result to set the pulsewidth modulation (PWM) of an output pin.
 Also prints the results to the serial monitor.

 The circuit:
 * potentiometer connected to analog pin 0.
   Center pin of the potentiometer goes to the analog pin.
   side pins of the potentiometer go to +5V and ground

 created 29 Dec. 2008
 modified 9 Apr 2012
 by Tom Igoe
 modified for Intel Edison and ThingSpeak June 2016
 by Stephen Borsay

 This example code is in the public domain.

 */

#include <SPI.h>
#include <WiFi.h> //intel wifi library

// These constants won't change.  They're used to give names
// to the pins used:

const int analogPotPin   = A0;  //Analog input pin the pot is attached to
const int digitalOutPin1 = 3; // digital output pin that the LED is attached 
const int digitalOutPin2 = 5; // digital output pin that the LED is attached 
const int digitalOutPin3 = 6; // digital output pin that the LED is attached 
const int digitalOutPin4 = 9; // digital output pin that the LED is attached 
const int digitalOutPin5 = 10; //digital output pin that the LED is attached 

const char WEBSITE[] = "api.thingspeak.com"; 

String apiKey ="<YOUR_THINGSPEAK_APYKEY_HERE>"; // api from ThingSpeak
char ssid[] = "<YOUR-SSID_NAME_HERE>";          //  your network SSID (name) 
char pass[] = "<YOUR_PASSWORD_HERE>";     
int keyIndex = 0;                  //Index number (needed only for WEP)

int status = WL_IDLE_STATUS;
int sensorValue = 0;        // value read from the pot
int outputValue = 0;        // value output to the PWM (analog out)

void setup()
{
  // initialize serial communications at 9600 bps:
  Serial.begin(9600);
  pinMode(analogPotPin,  INPUT);
  pinMode(digitalOutPin1, OUTPUT); //if Pinmode isnt set pins wont turn off
  pinMode(digitalOutPin2, OUTPUT);
  pinMode(digitalOutPin3, OUTPUT);
  pinMode(digitalOutPin4, OUTPUT);
  pinMode(digitalOutPin5, OUTPUT);
 

   if (WiFi.status() == WL_NO_SHIELD)
   {
    Serial.println("WiFi shield not present"); 
    // don't continue:
    while(true);
  } 

  String fv = WiFi.firmwareVersion();
  if( fv != "1.1.0" )
    Serial.println("Please upgrade the firmware");
  
  // attempt to connect to Wifi network:
  while (status != WL_CONNECTED)
  { 
    Serial.print("Attempting to connect to SSID: ");
    Serial.println(ssid);
    // Connect to WPA/WPA2 network. Change this line for open or WEP network:    
    status = WiFi.begin(ssid, pass);
  
    // wait 10 seconds for connection:
    delay(10000);
  } 
  Serial.println("Connected to wifi");
  printWifiStatus(); //references function at bottom of sketch
  
  Serial.println("\nStarting connection to server...");
}

void loop() {

   WiFiClient client;  //instancied objet locally so class values will change
  // read the analog in value:
  sensorValue = analogRead(analogPotPin);
  // map it to the range of the analog out:
  outputValue = map(sensorValue, 0, 1023, 0, 255);
  // change the analog out value:
 // analogWrite(analogOutPin, outputValue);

 //1023(normalized range) / 5 led pins = 204 range per threshold

  if(sensorValue <= 206)
  {
    digitalWrite(digitalOutPin2, LOW);        //turn off previous state
    digitalWrite(digitalOutPin3, LOW);        //turn off previous state
    digitalWrite(digitalOutPin4, LOW);        //turn off previous state
    digitalWrite(digitalOutPin5, LOW);        //turn off previous state
    digitalWrite(digitalOutPin1, HIGH); //write new state
    Serial.println("Less then 206\n");    
  }

  
  else if(sensorValue >= 206 && sensorValue < 411)
  {
    digitalWrite(digitalOutPin1, LOW);        //turn off previous state
    digitalWrite(digitalOutPin3, LOW);        //turn off previous state
    digitalWrite(digitalOutPin4, LOW);        //turn off previous state
    digitalWrite(digitalOutPin5, LOW);        //turn off previous state
    digitalWrite(digitalOutPin2, HIGH);
    Serial.println("Between 206 and 410\n");    
  }

  else if(sensorValue >= 411 && sensorValue < 615)
  {
    digitalWrite(digitalOutPin1, LOW);        //turn off previous state
    digitalWrite(digitalOutPin2, LOW);        //turn off previous state
    digitalWrite(digitalOutPin4, LOW);        //turn off previous state
    digitalWrite(digitalOutPin5, LOW);        //turn off previous state
    digitalWrite(digitalOutPin3,HIGH);
    Serial.println("Between 411 and 614\n");    
  }

   else if(sensorValue >= 615 && sensorValue < 820)
   {
    digitalWrite(digitalOutPin1, LOW);        //turn off previous state
    digitalWrite(digitalOutPin2, LOW);        //turn off previous state
    digitalWrite(digitalOutPin3, LOW);        //turn off previous state
    digitalWrite(digitalOutPin5, LOW);        //turn off previous state
    digitalWrite(digitalOutPin4,HIGH);
    Serial.println("Between 615 and 819\n");    
   }

    else if(sensorValue >= 820)
    {
     digitalWrite(digitalOutPin1, LOW);        //turn off previous state
     digitalWrite(digitalOutPin2, LOW);        //turn off previous state
     digitalWrite(digitalOutPin3, LOW);        //turn off previous state
     digitalWrite(digitalOutPin4, LOW);        //turn off previous state
     digitalWrite(digitalOutPin5,HIGH);
     Serial.println("greater then 819\n");    
    }

  // print the results to the serial monitor:
  Serial.print("sensor = ");
  Serial.print(sensorValue);
  Serial.print("\t output = ");
  Serial.println(outputValue);

  if (client.connect(WEBSITE, 80))
{
   Serial.println("connected to server");


          client.print(F("POST "));
          client.print("/update?key=apiKey&field1=" 
          +              (String) sensorValue
      //  +  "&field2=" +(String) sensorValue2  //just so you see how this works
    
                                   );
                                      
          String tsData = "field1="   //need the length to give to ThingSpeak
          +             (String)  sensorValue
      //  +  "&field2=" +(String) sensorValue2  
    
        ; 


          client.print("POST /update HTTP/1.1\n");  
          client.print("Host: api.thingspeak.com\n");
          client.print("Connection: close\n");
          client.print("X-THINGSPEAKAPIKEY: " + apiKey + "\n");
          client.print("Content-Type: application/x-www-form-urlencoded\n");
          client.print("Content-Length: ");
          client.print(tsData.length());  //send out data string legth to ts
          client.print("\n\n");
          client.print(tsData);
          client.stop();
          Serial.println("\nData Sent"); 
          //delay(1000);
  }


  //minimum things speak read cycle 15 secondss
  
}

void printWifiStatus() { //free bonus function
  // print the SSID of the network you're attached to:
  Serial.print("SSID: ");
  Serial.println(WiFi.SSID());

  // print your WiFi shield's IP address:
  IPAddress ip = WiFi.localIP();
  Serial.print("IP Address: ");
  Serial.println(ip);

  // print the received signal strength:
  long rssi = WiFi.RSSI();
  Serial.print("signal strength (RSSI):");
  Serial.print(rssi);
  Serial.println(" dBm");
}