#include <ESP8266.h>

// Network information.
#define WIFI_NAME "Wokwi_GUEST"
#define PASSWORD ""

// Hardware information.
#define SENSOR_POWER 13                            // Connect the power for the soil sensor here.
#define SOIL_PIN A0                                // Connect the sensor output pin here.
#define TIMEOUT  5000                              // Timeout for server response.
#define SLEEP_TIME_SECONDS 1800

// ThingSpeak information.
#define NUM_FIELDS 2                               // To update more fields, increase this number and add a field label below.
#define SOIL_MOISTURE_FIELD 1                      // ThingSpeak field for soil moisture measurement.
#define ELAPSED_TIME_FIELD 2                       // ThingSpeak field for elapsed time from startup.
#define THING_SPEAK_ADDRESS "api.thingspeak.com"
String writeAPIKey="TXMQS50YY7QVTN94";             // Change this to the write API key for your channel.

// Global variables. 
int numMeasure = 5;                                // Number of measurements to average.
int ADCValue = 0;                                  // Moisture sensor reading.
                         
WiFiClient client;

void setup()
{
    Serial.begin( 115200 );   // You may need to adjust the speed depending on your hardware.
    connectWifi();
    pinMode( SENSOR_POWER , OUTPUT );
    digitalWrite( SENSOR_POWER , LOW );   // Set to LOW so no power is flowing through the sensor.
}

void loop()
{
    // Write to successive fields in your channel by filling fieldData with up to 8 values.
    String fieldData[ NUM_FIELDS+1 ];  

    // You can write to multiple fields by storing data in the fieldData[] array, and changing numFields.        
    // Write the moisture data to field 1.
    fieldData[ SOIL_MOISTURE_FIELD ] = String( readSoil( numMeasure ) ); 
    Serial.print( "Soil Moisture = " );
    Serial.println( fieldData[ SOIL_MOISTURE_FIELD ] );
    
    // Write the elapsed time from startup to Field 2.
    fieldData[ ELAPSED_TIME_FIELD ] = String( millis() ); 
    
    HTTPPost( NUM_FIELDS , fieldData );
    
    delay( 1000 );
    Serial.print( "Goodnight for "+String( SLEEP_TIME_SECONDS ) + " Seconds" );
    ESP.deepSleep( SLEEP_TIME_SECONDS * 1000000 );
    // If you disable sleep mode, add delay so you don't post to ThingSpeak too often.
    // delay( 20000 );
}