Implementing E220 LoRa Remote Switch to Conserve Wyse Cam3 Battery

#include <Arduino.h> // *
#include "WiFi.h" // *
#include <WiFiUdp.h> // *
#include <HTTPClient.h> // *
#include <time.h> // *
#include "LoRa_E220.h" // Ebyte LoRa E220 Library
#include <AsyncTCP.h> // AsyncTCP Library
#include "ESPAsyncWebServer.h" // ESPAsyncWebServer Library
#include <Ticker.h> // *
#import "index7.h" // HTML web page stored in memory –Do not remove; except to replace with new “index7.h”.

#include "Arduino.h" // *
#include "LoRa_E220.h"
#include <WiFi.h> // *
#include <time.h> // *
#include <FS.h> // *
#include <LittleFS.h> // *
#include "esp_sleep.h" // *
#include "driver/gpio.h" // *
#include "esp_system.h" // *
#include <INA226_WE.h> // INA226_WE Library
#include <Wire.h> // *

ResponseStructContainer rsc = e220ttl.receiveMessage(sizeof(Message));

if (rsc.status.code == 1) { // Check if the status is SUCCESS
 Message message = *(Message*)rsc.data;
 //Serial.println(message.switchState); // This prints to monitor
 //Serial.println(message.dateTime); // This prints to monitor
 rsc.close();

void sendWOR(){
      e220ttl.setMode(MODE_1_WOR_TRANSMITTER);
      delay(delayTime);
      // Send message
      ResponseStatus rs = e220ttl.sendFixedMessage(0, DESTINATION_ADDL, CHANNEL, "Hello, world? WOR!");
      e220ttl.setMode(MODE_0_NORMAL);
      delay(delayTime);
}

server.on("/relay", HTTP_GET, [](AsyncWebServerRequest *request) {
     request->send_P(200, PSTR("text/html"), HTML7, processor7);
     sendWOR();  //Sends WOR message; moved the location for sending WOR message to sendWOR function.
     data = 1;  //Sets data to 1 used to turn on battery switch
     needAnotherCountdown = 1;  //Limits ticker once timer to be “reset” for multiple uses; instead of a single use.
     countdownTrigger();  //Starts countdown timer.
});

void sendWOR(){
    e220ttl.setMode(MODE_1_WOR_TRANSMITTER);
    delay(delayTime);
    // Send message
    ResponseStatus rs = e220ttl.sendFixedMessage(0, DESTINATION_ADDL, CHANNEL, "Hello, world? WOR!");
    e220ttl.setMode(MODE_0_NORMAL);
    delay(delayTime);
}

void countdownTrigger() {
    // Perform countdown actions here
    Serial.println("\nCountdown timer triggered!\n");
    //getDateTime();
    // Schedule the next countdown if needed
    if (needAnotherCountdown == 1) {
        onceTick.once(60, ISRcamera);
        data = 1;
        switchOne(data);
        needAnotherCountdown = 0;
    }
}

void switchOne(int data) {
	if (data == 1) {
		Serial.println("\nWaked up from external GPIO!");
		Serial.println("Wake and start listening!\n");
		delay(500);
		Serial.println("\nESP32 waking from Deep Sleep");
		Serial.println("Battery Switch is ON\n");
	}
	if (data == 2) {
		Serial.println("\nBattery power switched OFF");
		Serial.println("ESP32 going to Deep Sleep\n");
	}

	Serial.println("Hi, I'm going to send message!");
	e220ttl.setMode(MODE_1_WOR_TRANSMITTER);
	delay (delayTime);
	get_time();
	Message message;
	
	//initialize struct members
	message.switchState = data;

	// Initialize the dateTime
	String dateTimeStr = get_time();

	if (!dateTimeStr.isEmpty()) {
		strncpy(message.dateTime, dateTimeStr.c_str(), MAX_dateTime_LENGTH - 1);
		message.dateTime[MAX_dateTime_LENGTH - 1] = '\0'; // Ensure null-termination
	}

	Serial.print("switchState: ");
	Serial.println(message.switchState);

	Serial.print("dateTime: ");
	Serial.println(message.dateTime);

	// Send message
	ResponseStatus rs = e220ttl.sendFixedMessage(0, DESTINATION_ADDL, CHANNEL, &message, sizeof(Message));
	// Check If there is some problem of succesfully send
	Serial.println(rs.getResponseDescription());
}

int sendMessage(int data) {
	Serial.println("Hi, I'm going to send message!");
	e220ttl.setMode(MODE_1_WOR_TRANSMITTER);
	delay (delayTime);
	get_time();

	Message message;

	//Initialize struct members
	message.switchState = data;

	// Initialize the dateTime
	String dateTimeStr = get_time();
	if (!dateTimeStr.isEmpty()) {
		strncpy(message.dateTime, dateTimeStr.c_str(), MAX_dateTime_LENGTH - 1);
		message.dateTime[MAX_dateTime_LENGTH - 1] = '\0'; // Ensure null-termination
	}

	//Serial.print("switchState: "); Serial.println(message.switchState);
	//Serial.print("dateTime: "); Serial.println(message.dateTime);
	// Send message
	ResponseStatus rs = e220ttl.sendFixedMessage(0, DESTINATION_ADDL, CHANNEL, &message, sizeof(Message));
	// Check If there is some problem of successfully send
	Serial.println(rs.getResponseDescription());
}

//index7.h
const char HTML7[] PROGMEM = R"====(
<!DOCTYPE html>
<html>
<head>
  <meta name="viewport" content="width=device-width, initial-scale=1">
<style>
  html, body {
  margin: 0; /* Set margin to 0 to remove any unwanted spacing */
  padding: 0;
  height: 100%;
}

.container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  height: 100vh; /* Use viewport height for container */
}

  @media (max-width: 768px) {
  .container {
    flex: 1 1 auto;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
  }
}
    
    header {
      margin: 5vh auto 0;
      width: 100%;
      text-align: center;
    }
    
    main {
      display: flex;
      align-items: center;
      justify-content: center;
    }
    
    iframe {
      aspect-ratio: 16 / 9;
      width: 1300px; /* Set the width to 100% to occupy the entire container */
      flex: 1; /* Use flex: 1 to make the iframe expand and fill the available space */
    }

    footer {
      width: 100%;
      text-align: center;
      padding: 10px; /* Add some padding to the footer for spacing */
    }
</style>
</head>
<body>
  <div class="container">
    <header>
      <br><br>This is original H264 video encoded by IP camera; server doesn't do any transcoding.  Wyze Cam v3 video feeds
      <br>Wyze-Bridge Docker, container; which provides webRTC video URL.  Camera maybe offline; depending on battery discharge state.
      <br><br>
    </header>
    <main>
      <iframe class="iframe" width="1300" height="731"src="http://c600.duckdns.org:8889/wyze-cam-v3/" frameborder="0"></iframe> 
    </main>
    <footer>
      <h2><a href="http://%LINK%/Weather" >ESP32 Server</a></h2>  
    </footer>
  </div>
</body>
</html>
)====";

//E220_Remote_Switch_Sender.ino
//William Lucid 07/19/2024 @ 19:41 EST

//E220 Module is set to ADDL 3

//Fully connectd schema  AUX connected to ESP32, GPIO15
//Ardino IDE:  ESP32 Board Manager, Version 2.0.17

//  See library downloads for each library license.

// With FIXED SENDER configuration

#include <Arduino.h>
#include "WiFi.h"
#include <WiFiUdp.h> 
#include <HTTPClient.h>
#include <time.h>
#include "LoRa_E220.h"
#include <AsyncTCP.h>
#include "ESPAsyncWebServer.h"
#include <Ticker.h>

#import "index7.h"  //Video feed HTML; do not remove

#define DESTINATION_ADDL 2
#define FREQENCY_915
#define CHANNEL 66

#define RXD2 16
#define TXD2 17

#define AUX_PIN GPIO_NUM_15

int delayTime = 100;  //setmode delay duration

WiFiClient client;

///Are we currently connected?
boolean connected = false;

WiFiUDP udp;
// local port to listen for UDP packets
const int udpPort = 1337;
char incomingPacket[255];
char replyPacket[] = "Hi there! Got the message :-)";
//NTP Time Servers
const char * udpAddress1 = "pool.ntp.org";
const char * udpAddress2 = "time.nist.gov";

#define TZ "EST+5EDT,M3.2.0/2,M11.1.0/2"

int DOW, MONTH, DATE, YEAR, HOUR, MINUTE, SECOND;

char daysOfTheWeek[7][12] = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};

char strftime_buf[64];

// ---------- esp32 pins --------------
 LoRa_E220 e220ttl(&Serial2, 15, 21, 19); //  RX AUX M0 M1

//LoRa_E220 e220ttl(&Serial2, 22, 4, 33, 21, 19, UART_BPS_RATE_9600); //  esp32 RX <-- e220 TX, esp32 TX --> e220 RX AUX_PIN M0 M1
// -------------------------------------

// Replace with your network details
const char *ssid = "R2D2";
const char *password = "sissy4357";

AsyncWebServer server(80);

int data = 0;

// Struct to hold date and time components
struct DateTime {
    int year;
    int month;
    int day;
    int hour;
    int minute;
    int second;
};

// Define the maximum length for the dateTime
const int MAX_dateTime_LENGTH = 30;

int switchState;

struct Message {
  int switchState;
  char dateTime[MAX_dateTime_LENGTH];  // Array to hold date/time string
};

Message message;

Ticker oneTick;
Ticker onceTick;

String linkAddress = "xxx.xxx.xxx.xxx:80";

portMUX_TYPE mux = portMUX_INITIALIZER_UNLOCKED;

volatile int watchdogCounter;
int totalwatchdogCounter;
int cameraPowerOff = 0;
int watchDog;

void ISRwatchdog() {

  portENTER_CRITICAL_ISR(&mux);

  watchdogCounter++;

  if (watchdogCounter >= 75) {

    watchDog = 1;
  }

  portEXIT_CRITICAL_ISR(&mux);
}

int cameraFlag;
int needAnotherCountdown = 0;

void ISRcamera() {
  batteryOff();
}

bool got_interrupt = false;
 
void interruptHandler() {
  got_interrupt = true;
}  

void sendWOR(){
  e220ttl.setMode(MODE_1_WOR_TRANSMITTER);
  delay(delayTime);
  // Send message
  ResponseStatus rs = e220ttl.sendFixedMessage(0, DESTINATION_ADDL, CHANNEL, "Hello, world? WOR!");
  e220ttl.setMode(MODE_0_NORMAL);
  delay(delayTime);
}

void setup() {
  Serial.begin(9600);
  delay(500);

  Serial2.begin(9600, SERIAL_8N1, RXD2, TXD2);
  
  Message message;
  message.switchState = data;
  String dateTimeStr = get_time();
  if (!dateTimeStr.isEmpty()) {
    strncpy(message.dateTime, dateTimeStr.c_str(), MAX_dateTime_LENGTH - 1);
    message.dateTime[MAX_dateTime_LENGTH - 1] = '\0'; // Ensure null-termination
  }

  wifi_Start(); 
  
  pinMode(AUX_PIN, INPUT);

  attachInterrupt(GPIO_NUM_15, interruptHandler, FALLING);
  
  // Startup all pins and UART
  e220ttl.begin();
  delay(delayTime);
  e220ttl.setMode(MODE_1_WOR_TRANSMITTER);
  delay(delayTime);

  //sendWOR();
 
  e220ttl.setMode(MODE_0_NORMAL);
  delay(delayTime);

  Serial.println("\n\n\nWebserver and");
  Serial.println("E220-900T30D Remote Switch\n");

  configTime(0, 0, "pool.ntp.org", "time.nist.gov");
  // See https://github.com/nayarsystems/posix_tz_db/blob/master/zones.csv for Timezone codes for your region
  setenv("TZ", "EST+5EDT,M3.2.0/2,M11.1.0/2", 3);   // this sets TZ to Indianapolis, Indiana


  server.on("/relay", HTTP_GET, [](AsyncWebServerRequest *request) {
    request->send_P(200, PSTR("text/html"), HTML7, processor7);
    sendWOR();
    data = 1;
    needAnotherCountdown = 1;
    countdownTrigger();
  });

  server.begin();

  oneTick.attach(1.0, ISRwatchdog);  //watchdog  ISR triggers every 1 second
} 

void loop() {

  DateTime currentDateTime = getCurrentDateTime();	
  
  if((currentDateTime.minute % 15 == 0) && (currentDateTime.second == 0)){
    //webInterface();  //Sends URL Get request to wake up Radio and ESP32 at 1 minute interval
                      // URL = http://10.0.0.27/relay	 
    //delay(1000);
  }
  
  //udp only send data when connected
  if (connected)
  {

    //Send a packet
    udp.beginPacket(udpAddress1, udpPort);
    udp.printf("Seconds since boot: %u", millis() / 1000);
    udp.endPacket();
  }

  // If something available
  if (e220ttl.available() > 1) {
    // read the String message
    ResponseContainer rc = e220ttl.receiveMessage();
    // Is something goes wrong print error
    if (rc.status.code != 1) {
      Serial.println(rc.status.getResponseDescription());
    } else {
      // Print the data received
      Serial.println(rc.status.getResponseDescription());
      Serial.println(rc.data);
    }
  }
}
      
String processor7(const String &var) {

  //index7.h

  if (var == F("LINK"))
    return linkAddress;

  return String();
}

void batteryOff() {
  int data = 2;
  switchOne(data);
  oneTick.detach();
}

void configTime()
{

  configTime(0, 0, udpAddress1, udpAddress2);
  setenv("TZ", "EST+5EDT,M3.2.0/2,M11.1.0/2", 3);   // this sets TZ to Indianapolis, Indiana
  tzset();

  //udp only send data when connected
  if (connected)
  {

    //Send a packet
    udp.beginPacket(udpAddress1, udpPort);
    udp.printf("Seconds since boot: %u", millis() / 1000);
    udp.endPacket();
  }

  Serial.print("wait for first valid dateTime");

  while (time(nullptr) < 100000ul)
  {
    Serial.print(".");
    delay(5000);
  }

  Serial.println("\nSystem Time set\n");

  get_time();

  Serial.println(message.dateTime);

}

void countdownTrigger() {
  // Perform countdown actions here
  Serial.println("\nCountdown timer triggered!\n");
  //getDateTime();
  // Schedule the next countdown if needed
  if (needAnotherCountdown == 1) {
    onceTick.once(60, ISRcamera);
    data = 1;
    switchOne(data);
    needAnotherCountdown = 0;
  }
}

// Function to get current date and time
DateTime getCurrentDateTime() {
    DateTime currentDateTime;
    time_t now = time(nullptr);
    struct tm *ti = localtime(&now);

    // Extract individual components
    currentDateTime.year = ti->tm_year + 1900;
    currentDateTime.month = ti->tm_mon + 1;
    currentDateTime.day = ti->tm_mday;
    currentDateTime.hour = ti->tm_hour;
    currentDateTime.minute = ti->tm_min;
    currentDateTime.second = ti->tm_sec;

    return currentDateTime;
}

// Function to get the dateTime
String get_time() {

    time_t now;
    time(&now);
    char time_output[MAX_dateTime_LENGTH];
    strftime(time_output, MAX_dateTime_LENGTH, "%a  %m/%d/%y   %T", localtime(&now)); 
    return String(time_output); // returns dateTime in the specified format
}

void switchOne(int data) {
  if (data == 1) {
    Serial.println("\nWaked up from external GPIO!");
    Serial.println("Wake and start listening!\n");
    delay(500);
    Serial.println("\nESP32 waking from Deep Sleep");  
    Serial.println("Battery Switch is ON\n"); 
  }

  if (data == 2) {
    Serial.println("\nBattery power switched OFF");
    Serial.println("ESP32 going to Deep Sleep\n");
  }

  Serial.println("Hi, I'm going to send message!");

  e220ttl.setMode(MODE_1_WOR_TRANSMITTER);
  
  delay(delayTime);
  
  get_time();

  Message message; 
  
  //initialize struct members
  message.switchState = data;
  
  // Initialize the dateTime 
  String dateTimeStr = get_time();
  if (!dateTimeStr.isEmpty()) {
    strncpy(message.dateTime, dateTimeStr.c_str(), MAX_dateTime_LENGTH - 1);
    message.dateTime[MAX_dateTime_LENGTH - 1] = '\0'; // Ensure null-termination
  }

  Serial.print("switchState:  "); Serial.println(message.switchState);
  Serial.print("dateTime:  "); Serial.println(message.dateTime);

  // Send message
  ResponseStatus rs = e220ttl.sendFixedMessage(0, DESTINATION_ADDL, CHANNEL, &message, sizeof(Message));
  // Check If there is some problem of succesfully send
    Serial.println(rs.getResponseDescription());  
}  


int sendMessage(int data){
  Serial.println("Hi, I'm going to send message!");

  e220ttl.setMode(MODE_1_WOR_TRANSMITTER);
  
  delay(delayTime);
  
  get_time();

  Message message; 

  //Initialize struct members
  message.switchState = data;
 
  // Initialize the dateTime 
  String dateTimeStr = get_time();
  if (!dateTimeStr.isEmpty()) {
    strncpy(message.dateTime, dateTimeStr.c_str(), MAX_dateTime_LENGTH - 1);
    message.dateTime[MAX_dateTime_LENGTH - 1] = '\0'; // Ensure null-termination
  }

  //Serial.print("switchState:  "); Serial.println(message.switchState);
  //Serial.print("dateTime:  "); Serial.println(message.dateTime);

  // Send message
  ResponseStatus rs = e220ttl.sendFixedMessage(0, DESTINATION_ADDL, CHANNEL, &message, sizeof(Message));
  // Check If there is some problem of succesfully send
  Serial.println(rs.getResponseDescription());  
}

void webInterface() {

  //getTimeDate();

  String data = "http://10.0.0.27/relay";

  if (WiFi.status() == WL_CONNECTED) {
    HTTPClient http;    // Declare object of class HTTPClient

    http.begin(data);  // Specify request destination

    // No need to add content-type header for a simple GET request

    int httpCode = http.GET();   // Send the GET request

    if (httpCode == HTTP_CODE_OK) {
      String payload = http.getString();  // Get the response payload

      Serial.print("HttpCode: ");
      Serial.print(httpCode);   // Print HTTP return code
      Serial.println("\n");
      //Serial.print("  Data echoed back from Hosted website: ");
      //Serial.println(payload);  // Print payload response      

      http.end();  // Close HTTPClient
    } else {
      Serial.print("HttpCode: ");
      Serial.print(httpCode);   // Print HTTP return code
      Serial.println("  URL Request failed.");

      http.end();   // Close HTTPClient
    }
  } else {
    Serial.println("Error in WiFi connection");
  }
}

void wifi_Start() {

//Server settings
#define ip { 10, 0, 0, 27}
#define subnet \
  { 255, 255, 255, 0 }
#define gateway \
  { 10, 0, 0, 1 }
#define dns \
  { 10, 0, 0, 1 }

  WiFi.mode(WIFI_AP_STA);

  Serial.println();
  Serial.print("MAC: ");
  Serial.println(WiFi.macAddress());

  // We start by connecting to WiFi Station
  Serial.print("Connecting to ");
  Serial.println(ssid);

  WiFi.begin(ssid, password);
  delay(1000);

  //setting the static addresses in function "wifi_Start
  IPAddress ip;
  IPAddress gateway;
  IPAddress subnet;
  IPAddress dns;

  WiFi.config(ip, gateway, subnet, dns);

  Serial.println("Web server running. Waiting for the ESP32 IP...");

  // Printing the ESP IP address
  Serial.print("Server IP:  ");
  Serial.println(WiFi.localIP());
  Serial.print("Port:  ");
  Serial.println("80");
  Serial.print("MAC: ");
  Serial.println(WiFi.macAddress());
  Serial.print("Wi-Fi Channel: ");
  Serial.println(WiFi.channel());
  Serial.println("\n");

  delay(300);

  WiFi.waitForConnectResult();

  Serial.printf("Connection result: %d\n", WiFi.waitForConnectResult());

  server.begin();


  if (WiFi.waitForConnectResult() != 3) {
    delay(3000);
    wifi_Start();
  }
}

//E220_Remote_Switch_Receiver.ino   Added KY002S Bi-Stable MOSFET Switch and INA226 Battery Monitor
//William Lucid 7/28/2024 @ 01:21 EDT

//E220 Module is set to ADDL 2

//Fully connectd schema  AUX connected to ESP32, GPIO15 --Important RTC_GPIO Pin 
//Ardino IDE:  ESP32 Board Manager, Version 2.0.17

//  See library downloads for each library license.

// With FIXED SENDER configuration

#include "Arduino.h"
#include "LoRa_E220.h"
#include <WiFi.h>
#include <time.h>
#include <FS.h>
#include <LittleFS.h>
#include "esp_sleep.h"
#include "driver/gpio.h"
#include "esp_system.h"
#include <INA226_WE.h>
#include <Wire.h>

#define AUX_PIN_BITMASK 0x8000

// Persisted RTC variable
RTC_DATA_ATTR int bootCount = 0;
RTC_DATA_ATTR int switch_State = 0;

const int pulseDuration = 300;  // 100 milliseconds (adjust as needed)

#define DESTINATION_ADDL 3
#define FREQUENCY_915
#define CHANNEL 66

#define RXD2 16
#define TXD2 17


#define M0_PIN GPIO_NUM_21
#define M1_PIN GPIO_NUM_19

#define AUX_PIN GPIO_NUM_15
#define TRIGGER 32  //KY002S MOSFET Bi-Stable Switch
#define ALERT 4     //INA226 Battery Monitor

#define SDA_PIN 25
#define SCL_PIN 26

int delayTime = 100;  //setmode delay duration

#define I2C_ADDRESS 0x40

INA226_WE ina226 = INA226_WE(I2C_ADDRESS);

volatile bool event = false;

void alert() {
  event = true;
  detachInterrupt(ALERT);
}

volatile bool alertFlag = false;

// Struct to hold date and time components
struct DateTime {
  int year;
  int month;
  int day;
  int hour;
  int minute;
  int second;
};

// Define the maximum length for the timestamp
const int MAX_dateTime_LENGTH = 30;

int data = 0;

int switchState;

struct Message {
  int switchState;
  char dateTime[MAX_dateTime_LENGTH];  // Array to hold date/time string
};

Message message;

#define FPM_SLEEP_MAX_TIME 0xFFFFFFF
void callback() {
  Serial.println("Callback");
  Serial.flush();
}

bool interruptExecuted = false;  // Ensure interruptExecuted is volatile

void IRAM_ATTR wakeUp() {
  // Do not use Serial on interrupt callback
  interruptExecuted = true;
  detachInterrupt(AUX_PIN);
}

void printParameters(struct Configuration configuration);

// ---------- esp32 pins ----------------
LoRa_E220 e220ttl(&Serial2, 15, 21, 19);  //  RX AUX M0 M1

//LoRa_E220 e220ttl(&Serial2, 22, 4, 33, 21, 19, UART_BPS_RATE_9600); //  esp32 RX <-- e220 TX, esp32 TX --> e220 RX AUX_PIN M0 M1
// -------------------------------------

void handleWakeupReason() {
  esp_sleep_wakeup_cause_t wakeup_reason = esp_sleep_get_wakeup_cause();
  switch (wakeup_reason) {
    case ESP_SLEEP_WAKEUP_EXT0:
      Serial.println("Wakeup caused by external signal using RTC_IO");
      break;
    case ESP_SLEEP_WAKEUP_EXT1:
      Serial.println("Wakeup caused by external signal using RTC_CNTL");
      break;
    case ESP_SLEEP_WAKEUP_TIMER:
      Serial.println("Wakeup caused by timer");
      break;
    case ESP_SLEEP_WAKEUP_TOUCHPAD:
      Serial.println("Wakeup caused by touchpad");
      break;
    case ESP_SLEEP_WAKEUP_ULP:
      Serial.println("Wakeup caused by ULP program");
      break;
    default:
      Serial.printf("Wakeup was not caused by deep sleep: %d\n", wakeup_reason);
      break;
  }
}

void enterSleepMode() {
  e220ttl.setMode(MODE_3_SLEEP);
  delay(delayTime);
}

void enterDeepSleep() {
  e220ttl.setMode(MODE_2_POWER_SAVING);
  esp_sleep_enable_ext0_wakeup(GPIO_NUM_15, LOW);
  Serial.flush();  // Ensure all Serial data is sent before sleep
  gpio_hold_en(GPIO_NUM_21);
  gpio_hold_en(GPIO_NUM_19);
  gpio_deep_sleep_hold_en();
  Serial.println("Going to deep sleep");
  esp_deep_sleep_start();
  Serial.println("This will never be printed");
}

void setup() {
  Serial.begin(9600);
  delay(1000);

  Serial2.begin(9600, SERIAL_8N1, RXD2, TXD2); // TX = 17, RX = 16
  delay(500);

  pinMode(M0_PIN, OUTPUT);
  pinMode(M1_PIN, OUTPUT);

  enterSleepMode();

  Serial.println("\n\nE220 Remote Switch Receiver\n");

  //Set default Trigger normal boot 
  digitalWrite(TRIGGER, LOW);

  // Increment boot number and print it every reboot
  ++bootCount;
  Serial.println("Boot number: " + String(bootCount));

  // Configure wake-up interrupt on GPIO15 (AUX pin)
  attachInterrupt(GPIO_NUM_15, wakeUp, FALLING);

  esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_FAST_MEM, ESP_PD_OPTION_ON);

  pinMode(AUX_PIN, INPUT_PULLUP);  // GPIO15 WakeUp
  pinMode(TRIGGER, OUTPUT);        // ESP32, GPIO23
  pinMode(ALERT, INPUT);          // ESP32, GPIO4

  bool fsok = LittleFS.begin(true);
  Serial.printf_P(PSTR("\nFS init: %s\n"), fsok ? PSTR("ok") : PSTR("fail!"));

  Wire.begin(SDA_PIN, SCL_PIN);

  if (!ina226.init()) {
    Serial.println("\nFailed to init INA226. Check your wiring.");
    //while(1){}
  }

  // INA226 configuration
  ina226.enableAlertLatch();
  ina226.setAlertType(BUS_UNDER, 5);
  attachInterrupt(digitalPinToInterrupt(ALERT), alert, FALLING);

  e220ttl.begin();
  delay(delayTime);
  e220ttl.setMode(MODE_2_WOR_RECEIVER);
  delay(delayTime);

  // Check if the wakeup was due to external GPIO
  if (esp_sleep_get_wakeup_cause() == ESP_SLEEP_WAKEUP_EXT0) {
    //Serial.println("Waked up from external GPIO!");

    gpio_hold_dis(GPIO_NUM_21);
    gpio_hold_dis(GPIO_NUM_19);
    gpio_deep_sleep_hold_dis();

    e220ttl.setMode(MODE_0_NORMAL);
    delay(delayTime);
    e220ttl.sendFixedMessage(0, DESTINATION_ADDL, CHANNEL, "We have waked up from message, but we can't read It!");
  } else {
    e220ttl.setMode(MODE_2_POWER_SAVING);
    delay(delayTime);
    Serial.println("Going to deep sleep!");
    delay(100);

    if (ESP_OK == gpio_hold_en(GPIO_NUM_21)) {
      Serial.println("HOLD 21");
    } else {
      Serial.println("NO HOLD 21");
    }
    if (ESP_OK == gpio_hold_en(GPIO_NUM_19)) {
      Serial.println("HOLD 19");
    } else {
      Serial.println("NO HOLD 19");
    }
    
    gpio_deep_sleep_hold_en();
    delay(1);

    //Set default Trigger going deep sleep
    digitalWrite(TRIGGER, LOW);

    esp_sleep_enable_ext0_wakeup(GPIO_NUM_15, LOW);

    esp_deep_sleep_start();
  }
}

void loop() {

  //Serial.println("Test deep sleep");

  e220ttl.setMode(MODE_2_WOR_RECEIVER);
  
  if (e220ttl.available() > 0) {
    Serial.println("\nMessage arrived!");

    ResponseStructContainer rsc = e220ttl.receiveMessage(sizeof(Message));
    if (rsc.status.code == 1) {  // Check if the status is SUCCESS
      Message message = *(Message*)rsc.data;
      //Serial.println(message.switchState);  // This prints to monitor
      //Serial.println(message.dateTime);     // This prints to monitor
      rsc.close();

      e220ttl.setMode(MODE_0_NORMAL);
      delay(delayTime);

      ResponseStatus rsSend = e220ttl.sendFixedMessage(0, DESTINATION_ADDL, CHANNEL, "We have received the message!");
      Serial.println(rsSend.getResponseDescription());
      delay(10);

      e220ttl.setMode(MODE_0_NORMAL);
      delay(delayTime);

      enterSleepMode();
      
      if (message.switchState == 1 ) {
        Serial.println("\nWaked up from external0 RTC GPIO!");
        Serial.println("Wake and start listening!\n");
        digitalWrite(TRIGGER, HIGH);
        Serial.println("\nBattery power switched ON");
        Serial.println("ESP32 wake from Deep Sleep\n");
        getINA226(message.dateTime);
      }     

      if (message.switchState == 2) {
        digitalWrite(TRIGGER, HIGH);
        Serial.println("\nBattery power switched OFF");
        Serial.println("ESP32 going to Deep Sleep\n");
        enterDeepSleep();
      }   

      if (event) {
        Serial.println("Under voltage alert");
        alertFlag = true;
        ina226.readAndClearFlags();
        //attachInterrupt(digitalPinToInterrupt(ALERT), alert, FALLING);
        event = false;
        ina226.readAndClearFlags();
        //enterDeepSleep();
      }   
    }
  }
}

int main() {
  // Create an instance of the Message struct
  Message message;

  // Get the timestamp using the get_time function and assign it to the struct member
  String timestamp = get_time();
  timestamp.toCharArray(message.dateTime, MAX_dateTime_LENGTH);

  // Now you can use message.timestamp as needed...

  return 0;
}

// Function to get the timestamp
String get_time() {
  time_t now;
  time(&now);
  char time_output[MAX_dateTime_LENGTH];
  strftime(time_output, MAX_dateTime_LENGTH, "%a  %d-%m-%y %T", localtime(&now));
  return String(time_output);  // returns timestamp in the specified format
}

void getINA226(const char* dtStamp) {
  float shuntVoltage_mV = 0.0;
  float loadVoltage_V = 0.0;
  float busVoltage_V = 0.0;
  float current_mA = 0.0;
  float power_mW = 0.0;
  ina226.startSingleMeasurement();
  ina226.readAndClearFlags();
  shuntVoltage_mV = ina226.getShuntVoltage_mV();
  busVoltage_V = ina226.getBusVoltage_V();
  current_mA = ina226.getCurrent_mA();
  power_mW = ina226.getBusPower();
  loadVoltage_V = busVoltage_V + (shuntVoltage_mV / 1000);
  checkForI2cErrors();

  Serial.println(dtStamp);
  Serial.print("Shunt Voltage [mV]: ");
  Serial.println(shuntVoltage_mV);
  Serial.print("Bus Voltage [V]: ");
  Serial.println(busVoltage_V);
  Serial.print("Load Voltage [V]: ");
  Serial.println(loadVoltage_V);
  Serial.print("Current[mA]: ");
  Serial.println(current_mA);
  Serial.print("Bus Power [mW]: ");
  Serial.println(power_mW);

  if (!ina226.overflow) {
    Serial.println("Values OK - no overflow");
  } else {
    Serial.println("Overflow! Choose higher current range");
  }
  Serial.println();

  // Open a "log.txt" for appended writing
  File log = LittleFS.open("/log.txt", "a");

  if (!log) {
    Serial.println("file 'log.txt' open failed");
  }

  log.print(dtStamp);
  log.print(" , ");
  log.print(shuntVoltage_mV, 3);
  log.print(" , ");
  log.print(busVoltage_V, 3);
  log.print(" , ");
  log.print(loadVoltage_V, 3);
  log.print(" , ");
  log.print(current_mA, 3);
  log.print(" , ");
  log.print(power_mW, 3);
  log.print(" , ");
  if(alertFlag){
    log.print("Under Voltage alert");
    alertFlag = false;
  }
  log.println("");
  log.close();
}

void checkForI2cErrors() {
  byte errorCode = ina226.getI2cErrorCode();
  if (errorCode) {
    Serial.print("I2C error: ");
    Serial.println(errorCode);
    switch (errorCode) {
      case 1:
        Serial.println("Data too long to fit in transmit buffer");
        break;
      case 2:
        Serial.println("Received NACK on transmit of address");
        break;
      case 3:
        Serial.println("Received NACK on transmit of data");
        break;
      case 4:
        Serial.println("Other error");
        break;
      case 5:
        Serial.println("Timeout");
        break;
      default:
        Serial.println("Can't identify the error");
    }
    if (errorCode) {
      while (1) {}
    }
  }
}

#include <WiFi.h>
#include <FS.h>
#include <SPIFFS.h>
#include <LittleFS.h>
#include <FTPServer.h>

// Replace "XXXXXXXX" with your network details
const char * ssid = "XXXX";
const char * password = "XXXXXXXX";

WiFiClient client;

FTPServer ftpSrv(LittleFS);

void setup(){

  Serial.begin(9600);
  delay(1000);
  
  wifi_Start();

  bool fsok = LittleFS.begin(true);
  Serial.printf_P(PSTR("FS init: %s\n"), fsok ? PSTR("ok") : PSTR("fail!"));

  Serial.printf_P(PSTR("\nConnected to %s, IP address is %s\n"), ssid, WiFi.localIP().toString().c_str());

  // setup the ftp server with username and password
  // ports are defined in FTPCommon.h, default is
  //   21 for the control connection
  //   50009 for the data connection (passive mode by default)
  ftpSrv.begin(F("admin"), F("password")); //username, password for ftp.  set ports in ESP8266FtpServer.h  (default 21, 50009 for PASV)
}

void loop(){ 
  for(int x = 1; x < 5000; x++){
    ftpSrv.handleFTP();    
  }  
}

void wifi_Start() {

//Server settings
#define ip { 10, 0, 0, 28 }
#define subnet \
  { 255, 255, 255, 0 }
#define gateway \
  { 10, 0, 0, 1 }
#define dns \
  { 10, 0, 0, 1 }

  WiFi.mode(WIFI_AP_STA);

  Serial.println();
  Serial.print("MAC: ");
  Serial.println(WiFi.macAddress());

  // We start by connecting to WiFi Station
  Serial.print("Connecting to ");
  Serial.println(ssid);

  WiFi.begin(ssid, password);
  delay(1000);

  //setting the static addresses in function "wifi_Start
  IPAddress ip;
  IPAddress gateway;
  IPAddress subnet;
  IPAddress dns;

  WiFi.config(ip, gateway, subnet, dns);

  Serial.println("Web server running. Waiting for the ESP32 IP...");

  // Printing the ESP IP address
  Serial.print("Server IP:  ");
  Serial.println(WiFi.localIP());
  Serial.print("Port:  ");
  Serial.println("80");
  Serial.print("MAC: ");
  Serial.println(WiFi.macAddress());
  Serial.print("Wi-Fi Channel: ");
  Serial.println(WiFi.channel());
  Serial.println("\n");

  delay(500);

  WiFi.waitForConnectResult();

  Serial.printf("Connection result: %d\n", WiFi.waitForConnectResult());

  if (WiFi.waitForConnectResult() != 3) {
    delay(3000);
    wifi_Start();
  }
}