**Sensor Integration** rev_17

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    - Project: **Sensor Integration**
    - Source Code NOT compiled for: ESP32 DevKit V1
    - Source Code created on: 2024-10-20 15:42:39

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
    /* merge code. */
/****** END SYSTEM REQUIREMENTS *****/

/* START CODE */

/****** DEFINITION OF LIBRARIES *****/
#include <TinyGPSPlus.h>
#include "ACS712.h"
#include <WiFi.h>
#include <ESPAsyncWebServer.h>
#include <SPIFFS.h>
#include <ArduinoJson.h>
#include <EEPROM.h>
#include <OneWire.h>
#include <DallasTemperature.h>
#include "X9C10X.h"

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);

char ssid[] = "pleasedontcode.com";        // your network SSID (name)
char pass[] = "prova1234";        // your network password (use for WPA, or use as key for WEP)

// Create an instance of the web server
AsyncWebServer server(80);

// Create instances for sensors and components
TinyGPSPlus gps;
X9C10X pot(10000);  // 10KΩ digital potentiometer
OneWire oneWire1(19); // OneWire bus for temperature sensor 1
OneWire oneWire2(21); // OneWire bus for temperature sensor 2
DallasTemperature sensor1(&oneWire1);
DallasTemperature sensor2(&oneWire2);
ACS712 ACS(current_pin, 3.3, 4095, 40); // Current sensor setup

#define VELOCITA_SOGLIA_HIGH 75.0 //km/h
#define VELOCITA_SOGLIA_LOW 65.0 //km/h
#define VELOCITA_SOGLIA_0A_HIGH  20.0 //km/h
#define VELOCITA_SOGLIA_0A_LOW  10.0 //km/h

// PINS
const int water_level_pin = 18;
const int voltage_pin     = 35;
const int current_pin     = 34;
const int tempSensor1_pin = 33;
const int tempSensor2_pin = 32;
const int DIGPOT_INC      = 4;    // pin INC - X9C103S
const int DIGPOT_UD       = 5;    // pin UD - X9C103S
const int DIGPOT_CS       = 15;   // pin CS - X9C103S

const float PWM_output_percentage_0A = 0.0; //0%
const float PWM_output_percentage_9A = 20.0; //20% --> 1V/5V
const float PWM_output_percentage_5A = 13.0; //13% --> 0,65V/5V

// Global data to transfer
float PWM_output_percentage = 0.0;
float velocita = 0.0;
float voltage_output_value = 0.0;
bool waterLevelEmpty = true;
float voltage = 0.0;
float current = 0.0;
float temperature1 = 0.0;
float temperature2 = 0.0;
unsigned long powerOnTime = 0; //minutes

boolean startRegeneration = false;
unsigned int set_current  = 0;
unsigned int set_timer    = 0;

// Initialize SPIFFS for file storage
void initSPIFFS() {
  if (!SPIFFS.begin(true)) {
    Serial.println("An error occurred while mounting SPIFFS");
    return;
  }
  Serial.println("SPIFFS mounted successfully");
}

void setup(void)
{
    // Start Serial for debugging
    Serial.begin(115200);
    delay(1000);
    Serial.println("ciao");

    // Initialize digital potentiometer
    pot.begin(DIGPOT_INC, DIGPOT_UD, DIGPOT_CS);  // pulse, direction, select

    // Initialize temperature sensors
    sensor1.begin();
    sensor2.begin();

    // Initialize ACS712
    ACS.setMidPoint(ADC_Offset);

    Serial.println(F("Access Point Web Server"));

    // Initialize SPIFFS
    initSPIFFS();

    WiFi.mode(WIFI_AP); // Set the ESP32 to access point mode
    if (!WiFi.softAP(ssid, pass)) {
        Serial.println("Soft AP creation failed.");
        while(1);
    }

    // Print the IP address of the access point
    IPAddress IP = WiFi.softAPIP();
    Serial.print("Access Point IP Address: ");
    Serial.println(IP);

    // Serve the JPEG image
    server.on("/background.jpg", HTTP_GET, [](AsyncWebServerRequest *request){
        Serial.println("0");
        request->send(SPIFFS, "/background.jpg", "image/jpeg");
    });

    // Serve the HTML page
    server.on("/", HTTP_GET, [](AsyncWebServerRequest *request){
        Serial.println("1");
        request->send(SPIFFS, "/index.html", "text/html");
    });

    server.on("/UPDATEDATA", HTTP_POST, [](AsyncWebServerRequest *request) {
        // Log post request handling
        //Serial.println("postUpdateData");

        // Allocate a temporary JsonDocument
        StaticJsonDocument<512> doc;

        // Gather data and populate JSON
        updateData(doc);

        // Convert the JSON document to string and send it in response
        String response;
        serializeJsonPretty(doc, response);

        request->send(200, "application/json", response);
    });

    // Start the server
    server.begin();
}

void loop(void)
{
    // No logic in the loop; the server works asynchronously
    readGPSAndCheckSpeed();
    readCurrent();
    readVoltage();
    readWaterTank();
    readTemp1();
    readTemp2();
    updateMinutesCounter();
    checkRegeneration();
}

// The updateData function to generate the JSON payload
void updateData(JsonDocument &doc) {
    if (velocita > 0.0) {
        doc["speed"] = String(velocita) + String(F(" km/h"));
    } else {
        doc["speed"] = String(F("ERROR"));
    }
    doc["voltageCommandOut"] = String(F("Tensione uscita comando: ")) + String(voltage_output_value) + String(F("/3.3 [V]"));
    doc["percentageCommandOut"] = String(F("Uscita comando PWM: ")) + String(PWM_output_percentage) + String(F(" [%]"));
    doc["waterTankLevel"] = waterLevelEmpty ? String(F("VUOTO")) : String(F("PIENO"));
    doc["powerOnTime"] = String(powerOnTime) + String(F(" min"));
    doc["current"] = String(current) + String(F(" A"));
    doc["voltage"] = String(voltage) + String(F(" V"));
    doc["temperature1"] = String(temperature1) + String(F(" °C"));
    doc["temperature2"] = String(temperature2) + String(F(" °C"));
    doc["set_timer"] = String(F("Timer : ")) + String(set_timer) + String(F(" min"));
}

/* END CODE */