windspeed_thingspeak

#include <ESP8266WiFi.h>
#include "secrets.h"
#include <math.h>

#define WindSensorPin 4 // The pin location of the anemometer sensor
volatile unsigned long Rotations; // cup rotation counter used in interrupt routine
volatile unsigned long ContactBounceTime; // Timer to avoid contact bounce in interrupt routine
float WindSpeed; // speed miles per hour

#include "ThingSpeak.h" // always include thingspeak header file after other header files and custom macros

char ssid[] = "YOUR SSID"; // your network SSID (name)
char pass[] = "YOUR PASS"; // your network password
int keyIndex = 0; // your network key Index number (needed only for WEP)

WiFiClient client;
unsigned long myChannelNumber = CHANNEL;
const char * myWriteAPIKey = "API_KEY";

bool incrementRotation = false;


// This is the function that the interrupt calls to increment the rotation count
ICACHE_RAM_ATTR void isr_rotation () {
  incrementRotation = true;
  Serial.print("ISR");
}

void setup() {
  Serial.begin(9600); // Initialize serial
  pinMode(WindSensorPin, INPUT);
  attachInterrupt(digitalPinToInterrupt(WindSensorPin), isr_rotation, FALLING);
  
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client); // Initialize ThingSpeak
}
//pinMode(WindSensorPin,INPUT);
//attachInterrupt(digitalPinToInterrupt(WindSensorPin), isr_rotation, FALLING);
// Serial.println("Rotations\tMPH"); //use for debug

void loop() {
  // Connect or reconnect to WiFi
  if (WiFi.status() != WL_CONNECTED) {
    Serial.print("Attempting to connect to SSID: ");
    Serial.println(SECRET_SSID);
    while (WiFi.status() != WL_CONNECTED) {
      WiFi.begin(ssid, pass); // Connect to WPA/WPA2 network. Change this line if using open or WEP network
      Serial.print(".");
      delay(5000);
    }
    Serial.println("\nConnected.");
  }
  Rotations = 0; // Set Rotations count to 0 ready for calculations
  //sei(); // Enables interrupts
  
  //delay (3000); // Wait 3 seconds to average
  //cli(); // Disable interrupts
  // convert to mp/h using the formula V=P(2.25/T)
  // V = P(2.25/3) = P * 0.75
  if (incrementRotation){
    if ((millis() - ContactBounceTime) > 15 ) { // debounce the switch contact.
    Rotations++;
    ContactBounceTime = millis();
    // Write to ThingSpeak. There are up to 8 fields in a channel, allowing you to store up to 8 different
    // pieces of information in a channel. Here, we write to field 1.
    WindSpeed = Rotations * 0.75;
    int x = ThingSpeak.writeField(myChannelNumber, 1, WindSpeed, myWriteAPIKey);
    if (x == 200) {
      Serial.println("Channel update successful.");
    }
    else {
      Serial.println("Problem updating channel. HTTP error code " + String(x));
    }
    incrementRotation = false;
    }
  }
}