Ssd1306 allocation failed error

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I am try to develop spot welding tool and get help from under mention youTube channel, i use under mention code and get error message "ssd1306 allocation failed". can you please help me.

youTube Cannel link : https://www.youtube.com/watch?v=3PPimPCcil8&t=322s

I try this using Arduino Nano board and Arduino IDE

#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include "OneButton.h"  //we need the OneButton library to detect diffrent push functions.
#include <EEPROM.h>


#define SCREEN_ADDRESS 0x3C  ///< See datasheet for Address;
Adafruit_SSD1306 display(128, 64, &Wire, -1);

/******************************************************************/
// For measuring Voltage

#define Vref A0                    // Voltage sense for input wire.
int offset = 50;                   // To correct the voltage voltage loss in diode
unsigned long previousMillis = 0;  // for volatage measuring every 5sec.
double voltage;                    // Variable that stores voltage value in Volts.

const unsigned char channel[] PROGMEM = {

  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x3d, 0xff, 0xc0, 0x3c, 0x00, 0x07, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x1c, 0xff, 0x80, 0x38, 0x00, 0x03, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x1c, 0xff, 0x80, 0x38, 0x00, 0x03, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc7, 0xff, 0x9c, 0xf8, 0x0f, 0x39, 0xff, 0xe3, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc7, 0xff, 0x9c, 0xf8, 0x0f, 0x39, 0xff, 0xe3, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc6, 0x03, 0x9c, 0x3e, 0x33, 0xf9, 0xc0, 0x63, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc6, 0x03, 0x9c, 0x3e, 0x73, 0xf9, 0xc0, 0x63, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc6, 0x03, 0x9c, 0x1e, 0x73, 0xf9, 0xc0, 0x63, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc6, 0x03, 0x9c, 0x07, 0xf3, 0x39, 0xc0, 0x63, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc6, 0x03, 0x9c, 0x07, 0xf3, 0x39, 0xc0, 0x63, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc6, 0x03, 0x9f, 0x06, 0x70, 0xf9, 0xc0, 0x63, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc6, 0x03, 0x9f, 0x06, 0x70, 0xf9, 0xc0, 0x63, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc7, 0xff, 0x9c, 0x07, 0x8f, 0x39, 0xff, 0xe3, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc7, 0xff, 0x9c, 0x07, 0x8f, 0x39, 0xff, 0xe3, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc7, 0xff, 0x1c, 0x07, 0x8f, 0x38, 0xff, 0xe3, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x1c, 0xc6, 0x73, 0x38, 0x00, 0x03, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x1c, 0xc4, 0x73, 0x38, 0x00, 0x03, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x7c, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x7c, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x7e, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc1, 0xf0, 0x1f, 0xc6, 0x7f, 0xfe, 0x30, 0x03, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc1, 0xf0, 0x1f, 0xee, 0x7f, 0xff, 0x30, 0x07, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc6, 0x0f, 0xff, 0xff, 0xf0, 0x3f, 0xc1, 0x9f, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xe6, 0x0f, 0xff, 0xff, 0xf0, 0x3f, 0xc1, 0x9f, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xf9, 0x8e, 0x00, 0x03, 0xf0, 0x3c, 0x30, 0x7f, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xf9, 0xcc, 0x00, 0x01, 0xf0, 0x38, 0x30, 0x7f, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xf9, 0xde, 0x00, 0x01, 0xf0, 0x38, 0x30, 0x3f, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xf9, 0xff, 0xe0, 0x3e, 0x7f, 0x39, 0xce, 0x1f, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xf9, 0xff, 0xe0, 0x3c, 0x3f, 0x99, 0xcc, 0x0f, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xf9, 0xcf, 0x9c, 0xf8, 0x1f, 0xc1, 0xf0, 0x03, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xf9, 0xcf, 0x9c, 0xf8, 0x0f, 0xc1, 0xf0, 0x03, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xe1, 0xfe, 0x7c, 0xe7, 0x80, 0x03, 0xef, 0x0f, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc1, 0xfc, 0x7c, 0xc7, 0x80, 0x07, 0xcf, 0x9f, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xe1, 0xfc, 0x7c, 0xc7, 0x80, 0x07, 0x87, 0x9f, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xff, 0xf3, 0x9f, 0x38, 0x70, 0x1e, 0x00, 0x7f, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xff, 0xf3, 0x9f, 0x38, 0x70, 0x3e, 0x00, 0x7f, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x3c, 0x73, 0xfe, 0x0c, 0x1f, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x3e, 0x73, 0xfe, 0x0e, 0x1f, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xe1, 0xc0, 0x00, 0xce, 0x70, 0x00, 0x00, 0x7f, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc1, 0xc0, 0x00, 0xc6, 0x70, 0x00, 0x00, 0x7f, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x01, 0xff, 0x0f, 0x83, 0xff, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x01, 0xff, 0x1f, 0xcf, 0xff, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x01, 0xff, 0x3f, 0xcf, 0xff, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x1f, 0xc1, 0xff, 0x3d, 0xcf, 0xff, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x1f, 0xc1, 0xff, 0x39, 0xcf, 0xff, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc7, 0xff, 0x1d, 0xfe, 0x70, 0x3f, 0xc0, 0x1f, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc7, 0xff, 0x9c, 0xfe, 0x70, 0x3f, 0xc0, 0x1f, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc7, 0xff, 0x9c, 0xfc, 0x20, 0x1f, 0x80, 0x1f, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc6, 0x03, 0x9c, 0xc0, 0x0f, 0x00, 0x00, 0x1f, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc6, 0x03, 0x9c, 0xc0, 0x0f, 0x00, 0x00, 0x1f, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc6, 0x03, 0x9f, 0x07, 0x8c, 0xc0, 0x3c, 0x03, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc6, 0x03, 0x9f, 0x07, 0x8c, 0xc0, 0x3e, 0x03, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc6, 0x03, 0x9f, 0x07, 0xde, 0x40, 0x7c, 0x07, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc6, 0x03, 0x9f, 0x39, 0xff, 0x39, 0xf1, 0x9f, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc6, 0x03, 0x9f, 0x39, 0xff, 0x39, 0xf1, 0x9f, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc7, 0xff, 0x9c, 0x00, 0x73, 0xfe, 0x00, 0x1f, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc7, 0xff, 0x9c, 0x00, 0x73, 0xfe, 0x00, 0x1f, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x1c, 0xc0, 0x0c, 0xfd, 0xfc, 0x07, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x1c, 0xc0, 0x0c, 0xf9, 0xfe, 0x03, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x1d, 0xe0, 0x1c, 0xfd, 0xfe, 0x07, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
};

/******************************************************************/
// For Rotatory Encoder

volatile bool clk_State;   // For Rotatory Encoder
volatile bool Last_State;  // For Rotatory Encoder
volatile bool dt_State;    // For Rotatory Encoder
#define clk 2              // Rotatory encoder clk pin to D2
#define dt 3               // Rotatory encoder dt pin to D3
#define push 4             // Push input of Rotatory Encoder

/******************************************************************/
// Declaring GPIOs of Input and Output Devices.

const int footSwitch = 5;  // Input from Footswitch is attached to D5
const int ac_Switch = 6;   // Output at acSwitch(onboard Relay) is attached to D6
const int Ext_Relay = 7;   // Output at Ext_Relay is attached to D7
const int Mosfet = 8;      // Output at Mosfet is attached to D8
#define buzzer 9           // Output at Ext_Relay is attached to D9
int a = 0;

/******************************************************************/
// Declaring Variables for the code

int pulse;            // Saved variable to store how many times the weld will repeat.
int16_t counter;      // rotatory encoder adds increments to it.
int8_t pulsetime;     // saved Pulse set by user.
int8_t setpulsetime;  // Unsaved variable to store the time value untill it is saved.
int footSwitchstate = LOW;
int8_t WeldMode;      // Set Mosfet Switch as default mode.
boolean LV_Shutdown;  // To Enable/Disable low voltage shutdown.
bool Busy = false;
boolean failsafe = false;

double Alm_Volt;  // To Set Low voltage.
int volt;

OneButton button(push, true);  // attach a button on pin 4 to the library

/******************************************************************/
// Starting Setup

void setup() {         // [Starting Setup]
  Serial.begin(9600);  // Wait Serial Monitor to start.
#define SSD1306_NO_SPLASH ;

  // SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
  if (!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) {
    Serial.println(F("SSD1306 allocation failed"));
    for (;;)
      ;  // Don't proceed, loop forever
  }      // Show initial display buffer contents on the screen --
         // the library initializes this with an Adafruit splash screen.

  display.display();
  delay(2000);  // Pause for 2 seconds

  // Serial.println("Initialization Complete");

  /******************************************************************/
  // Declaring GPIOs as Inputs/Outputs

  pinMode(Vref, INPUT);        // Vref Pin is assigned as Input
  pinMode(push, INPUT);        // Define the pin as input
  pinMode(clk, INPUT);         // Define as input
  pinMode(dt, INPUT);          // Define as input
  pinMode(footSwitch, INPUT);  // Define footSwitch as Input
  pinMode(ac_Switch, OUTPUT);  // Define ac_Switch as Input
  pinMode(Ext_Relay, OUTPUT);  // Define Ext_relay as Input
  pinMode(buzzer, OUTPUT);     // Define buzzer as output
  pinMode(Mosfet, OUTPUT);     // Define Ext_relay as Input

  // Call the interrupt when rotatory encoder is moved.
  attachInterrupt(digitalPinToInterrupt(clk), Rotatory, CHANGE);

  /******************************************************************/
  // Time Interrupt

  TCCR1A = 0;
  TCCR1B = 0;
  TCCR1B |= (1 << CS11) | (1 << CS10);
  TIMSK1 = 0;
  TIMSK1 |= (1 << OCIE1A);

  Last_State = digitalRead(clk);  // Scan Clk pin of Rotatory Encoder

  button.attachDoubleClick(doubleclick);  // link the function to be called on a doubleclick event.
  button.attachClick(singleclick);         // link the function to be called on a singleclick event.
  button.attachLongPressStart(longclick);  // link the function to be called on a longpress event.

  pulsetime = EEPROM.read(1);
  pulse = EEPROM.read(2);
  WeldMode = EEPROM.read(3);
  LV_Shutdown = EEPROM.read(4);
  Alm_Volt = EEPROM.read(6);  // to get the values in volt.
  Alm_Volt = Alm_Volt / 10;
  counter = pulsetime;
}

/******************************************************************/

void loop() {

  button.tick();           // check the status of the button
  setpulsetime = counter;  //[Set Pulse time]

  if (setpulsetime < 5) {  //[set Minimum Pulse time to 5ms]
    setpulsetime = 5;
  }
  if (setpulsetime >= 70) {  //[set Maximum Pulse time to 5ms]
    setpulsetime = 70;
  }

  /******************************************************************/
  // Call singleclick(Weld) Function when footswitch is pressed.

  if (digitalRead(footSwitch) == HIGH) {  // footSwitch becomes HIGH when the foot button is pressed.
    if (footSwitchstate != HIGH) {
      singleclick();  // Run the single click function
      // failsafe = false;
    }

    footSwitchstate = HIGH;
  } else {
    footSwitchstate = LOW;
  }
  // End

  /******************************************************************/
  // Measure Voltage Every Second using millis function.

  unsigned long currentMillis = millis();
  if (currentMillis - previousMillis >= 1000) {  // [Measure Voltage Every Second]
    previousMillis = currentMillis;              // save the last time you measured the voltage
    if (Busy == false) {                         // Avoid checking voltage during welding
      check_Volt();                              // Run the Check Volt function.
    }
  }

  if (WeldMode == 1 && voltage <= Alm_Volt && LV_Shutdown == true) {  // Activate low voltage for mosfet Weld.
    failsafe = true;
  }

  if (failsafe == true && a != 8) {
    low_voltage();  // Call for Low_Voltage Function
  }

  if (a == 8 || failsafe != true) {
    printText();  // Print the values in the OLED if Batt Low Volt is On.
  }

}  // End Loop

/******************************************************************/

void singleclick() {  // what happens when the button is clicked
  int i = 1;
  if (failsafe != true) {
    while (i <= pulse) {    // If multiweld is activted, repeat welding process.
      if (Busy == false) {  // Continue only if device has finished welding
        delay(100);         // Wait 100ms after previous weld to next weld.
        if (WeldMode == 1) {
          digitalWrite(Mosfet, HIGH);
        }
        if (WeldMode == 2) {
          digitalWrite(Ext_Relay, HIGH);
        }
        if (WeldMode == 3) {
          digitalWrite(ac_Switch, HIGH);
        }
        digitalWrite(13, HIGH);
        digitalWrite(buzzer, HIGH);

        TCNT1 = 0;
        OCR1A = pulsetime * 250;
        bool Busy = true;  // Set Device to Busy
      }
      i++;
    }
    return;
  }
}  // End Function

/******************************************************************/
void doubleclick() {
  Settings();  //[Call settings function to display Setting options]
}

void longclick() {  // what happens when buton is long-pressed

  pulsetime = setpulsetime;  // Save the Changed Vaalue in multiweld.
  save_data();               // Call Save data function which stores values on eeprom.
  // Serial.println("Values Saved");
}

/******************************************************************/
// Voltage Measuring Function
void check_Volt() {
  int volt = analogRead(Vref);
  voltage = map(volt, 0, 1023, 0, 2628) + offset;  // 1V = 100increments
  voltage = voltage / 100;                         // divide  by 100 to get the decimal values.
}

ISR(TIMER1_COMPA_vect) {  //[Deactivate the All Weldig Outputs after Set pulse Time]
  digitalWrite(Mosfet, LOW);
  digitalWrite(Ext_Relay, LOW);
  digitalWrite(ac_Switch, LOW);
  digitalWrite(13, LOW);
  digitalWrite(buzzer, LOW);
  Busy = false;
}

/******************************************************************/
// Rotatory Encoder Function Using hardware Interrupt.
// It's value can be accessed at any function.

void Rotatory() {
  clk_State = digitalRead(clk);
  dt_State = digitalRead(dt);
  if (clk_State != Last_State) {
    /* If the data state is different to the clock state,
    that means the encoder is rotating clockwise */

    if (dt_State != clk_State) {
      // up=true;
      counter++;  // Increase Counter by 1 increment.
    } else {
      //  down=true;
      counter--;
    }
  }
  Last_State = clk_State;  // Updates the previous state of the data with the current state
  if (counter <= 0) {
    counter = 0;
  }

  if (counter >= 250) {
    counter = 250;
  }
}

/******************************************************************/
// Menu Item

void Settings() {  // when rotatory is pressed two times, open this menu page.
  counter = 1;     // To Always highlight 1st menu.
  int submenu = 0;
  int page = 1;
  boolean okay = false;  // To detect button press in menu.
  boolean pushState = HIGH;

  //******************************************************************/
  while (true) {  // run this code for infinity to display the settings menu

    // Read if button is pressed.
    if (digitalRead(push) == LOW) {  // footSwitch becomes HIGH when the foot button is pressed.
      if (pushState != LOW) {
        okay = true;  // Say button has pressed
      }

      pushState = LOW;
    } else {
      pushState = HIGH;
      okay = false;
    }

    // End
    //******************************************************************/

    // Draw Main Menu on top section of the display.

    display.setTextSize(1);
    display.clearDisplay();
    display.setTextColor(WHITE, BLACK);
    display.setCursor(37, 0);
    display.print("MAIN MENU");
    display.drawFastHLine(0, 10, 127, WHITE);
    // First Window of the menu (First Window Concists of 6 pages or options)  [Main Menu]

    if (submenu == 0)  // First Option [Main Menu Screen]
    {

      if (counter >= 0 && counter <= 2) {  //[Highlight Set Pulse Menu]
        display.setTextSize(1);
        display.setCursor(0, 13);
        display.setTextColor(BLACK, WHITE);
        display.print("> Set Pulse");
        display.setCursor(0, 23);
        display.setTextColor(WHITE, BLACK);
        display.print("> Set Mode");
        display.setCursor(0, 33);
        display.print("> Set Low Volt");
        display.setCursor(0, 43);
        if (LV_Shutdown == false) {
          display.print("> L-V Shutdown: OFF");
        } else {
          display.print("> L-V Shutdown: ON");
        }
        page = 1;
      }

      if (counter > 2 && counter <= 4) {  //[Highlight Select Weldig Mode Menu]
        display.setTextSize(1);
        display.setCursor(0, 13);
        display.setTextColor(WHITE);
        display.print("> Set Pulse");
        display.setCursor(0, 23);
        display.setTextColor(BLACK, WHITE);
        display.print("> Set Mode");
        display.setTextColor(WHITE);
        display.setCursor(0, 33);
        display.print("> Set Low Volt");
        display.setCursor(0, 43);
        if (LV_Shutdown == false) {
          display.print("> L-V Shutdown: OFF");
        } else {
          display.print("> L-V Shutdown: ON");
        }
        page = 2;
      }

      if (counter > 4 && counter <= 6) {  //[Highlight Set Low VOlt Menu]
        display.setTextSize(1);
        display.setCursor(0, 13);
        display.setTextColor(WHITE);
        display.print("> Set Pulse");
        display.setCursor(0, 23);
        display.print("> Set Mode");
        display.setTextColor(BLACK, WHITE);
        display.setCursor(0, 33);
        display.print("> Set Low Volt");
        display.setTextColor(WHITE);
        display.setCursor(0, 43);
        if (LV_Shutdown == false) {
          display.print("> L-V Shutdown: OFF");
        } else {
          display.print("> L-V Shutdown: ON");
        }
        page = 3;
      }

      if (counter > 6 && counter <= 8) {  //[Highlight Low Voltage Shutdown Menu]
        display.setTextSize(1);
        display.setCursor(0, 13);
        display.setTextColor(WHITE);
        display.print("> Set Pulse");
        display.setCursor(0, 23);
        display.print("> Set Mode");
        display.setCursor(0, 33);
        display.print("> Set Low Volt");
        display.setTextColor(BLACK, WHITE);
        display.setCursor(0, 43);
        if (LV_Shutdown == false) {
          display.print("> L-V Shutdown: OFF");
        } else {
          display.print("> L-V Shutdown: ON");
        }
        page = 4;
      }

      if (counter > 8 && counter <= 10) {  //[Highlight About Menu]
        display.setTextSize(1);
        display.setTextColor(WHITE, BLACK);
        display.setCursor(0, 13);
        display.print("> Set Mode");
        display.setCursor(0, 23);
        display.print("> Set Low Volt");
        display.setCursor(0, 33);
        if (LV_Shutdown == false) {
          display.print("> L-V Shutdown: OFF");
        } else {
          display.print("> L-V Shutdown: ON");
        }
        display.setTextColor(BLACK, WHITE);
        display.setCursor(0, 43);
        display.print("> About");
        page = 5;
      }

      if (counter > 10) {  //[Highlight Back Menu]
        display.setTextSize(1);
        display.setTextColor(WHITE, BLACK);
        display.setCursor(0, 13);
        display.print("> Set Low Volt");
        display.setCursor(0, 23);
        if (LV_Shutdown == false) {
          display.print("> L-V Shutdown: OFF");
        } else {
          display.print("> L-V Shutdown: ON");
        }
        display.setCursor(0, 33);
        display.print("> About");
        display.setCursor(0, 43);
        display.setTextColor(BLACK, WHITE);
        display.print("> Back");
        page = 6;
      }

      display.display();
    }  // End Submenu=1 [Main Menu]

    //**********************************************************************************/

    if (submenu == 1)  //[Sub-Option Folder for SET PULSE]
    {
      display.setTextSize(1);
      display.clearDisplay();

      if (counter >= 0 && counter <= 2)  //[First option of Set Pulse]
      {
        display.setCursor(0, 0);
        display.setTextColor(BLACK, WHITE);
        display.print("> 1 Pulse");
        display.setCursor(0, 10);
        display.setTextColor(WHITE, BLACK);
        display.print("> 2 Pulses");
        display.setCursor(0, 20);
        display.print("> 3 Pulses");
        display.setCursor(0, 30);
        display.print("> 4 Pulses");
        page = 1;
      }

      if (counter > 2 && counter <= 4)  //[Second option of Set Pulse]
      {
        display.setCursor(0, 0);
        display.setTextColor(WHITE, BLACK);
        display.print("> 1 Pulse");
        display.setCursor(0, 10);
        display.setTextColor(BLACK, WHITE);
        display.print("> 2 Pulses");
        display.setTextColor(WHITE, BLACK);
        display.setCursor(0, 20);
        display.print("> 3 Pulses");
        display.setCursor(0, 30);
        display.print("> 4 Pulses");
        page = 2;
      }

      if (counter > 4 && counter <= 6)  //[Third option of Set Pulse]
      {
        display.setCursor(0, 0);
        display.setTextColor(WHITE, BLACK);
        display.print("> 1 Pulse");
        display.setCursor(0, 10);
        display.print("> 2 Pulses");
        display.setTextColor(BLACK, WHITE);
        display.setCursor(0, 20);
        display.print("> 3 Pulses");
        display.setTextColor(WHITE, BLACK);
        display.setCursor(0, 30);
        display.print("> 4 Pulses");
        page = 3;
      }

      if (counter > 6)  //[Forth option of Set Pulse]
      {
        display.setCursor(0, 0);
        display.setTextColor(WHITE, BLACK);
        display.print("> 1 Pulse");
        display.setCursor(0, 10);
        display.print("> 2 Pulses");
        display.setCursor(0, 20);
        display.print("> 3 Pulses");
        display.setTextColor(BLACK, WHITE);
        display.setCursor(0, 30);
        display.print("> 4 Pulses");
        page = 4;
      }
    }

    //**********************************************************************************/

    if (submenu == 2)  //[Sub-Option Folder for Set Mode]
    {

      // Draw Set Weld Mode on top section of the display.
      display.setTextSize(1);
      display.clearDisplay();
      display.setTextColor(WHITE, BLACK);
      display.setCursor(25, 0);  //[Center Aligned]
      display.print("Set Weld Mode");
      display.drawFastHLine(0, 10, 127, WHITE);

      if (counter >= 0 && counter <= 2)  //[First option of Set Mode]
      {
        display.setCursor(0, 14);
        display.setTextColor(BLACK, WHITE);
        display.print("1. Batt Weld");
        display.setCursor(0, 24);
        display.setTextColor(WHITE, BLACK);
        display.print("2. Ext Relay");
        display.setCursor(0, 34);
        display.print("3. Ac Switch");
        page = 1;
      }

      if (counter > 2 && counter <= 4)  //[Second option of Set Mode]
      {
        display.setCursor(0, 14);
        display.setTextColor(WHITE, BLACK);
        display.print("1. Batt Weld");
        display.setCursor(0, 24);
        display.setTextColor(BLACK, WHITE);
        display.print("2. Ext Relay");
        display.setCursor(0, 34);
        display.setTextColor(WHITE, BLACK);
        display.print("3. Ac Switch");
        page = 2;
        //   okay=false;
      }

      if (counter > 4)  //[Third option of Set Mode]
      {
        display.setCursor(0, 14);
        display.setTextColor(WHITE, BLACK);
        display.print("1. Batt Weld");
        display.setCursor(0, 24);
        display.print("2. Ext Relay");
        display.setCursor(0, 34);
        display.setTextColor(BLACK, WHITE);
        display.print("3. Ac Switch");
        page = 3;
        //   okay=false;
      }
    }  // End Submenu = 2

    //**********************************************************************************/

    if (submenu == 3)  //[Sub-Option Folder for Low Voltage]
    {
      submenu = 0;
      counter = Alm_Volt * 10;  // Sync rotary with previously set value
      bool n = false;
      pushState = LOW;

      while (true) {  // run this loop for infinity untill the push button is pressed.

        display.setTextSize(1);
        display.clearDisplay();
        display.setTextColor(WHITE, BLACK);
        display.setCursor(31, 0);
        display.print("Set Low V");
        display.drawFastHLine(0, 10, 127, WHITE);

        Alm_Volt = map(counter, 0, 200, 0, 2000);
        Alm_Volt = Alm_Volt / 100;

        display.setTextSize(2);

        display.setCursor(0, 20);
        display.print("Volt:");
        display.println(Alm_Volt);

        if (digitalRead(push) == LOW) {  //[Read if button is pressed]
          if (pushState != LOW) {
            n = true;  // Break while loop.
          }
          pushState = LOW;
        } else {
          pushState = HIGH;
          n = false;
        }
        if (n == true) {  // If button is pressed, end while loop.
          counter = 6;
          break;
        }

        display.display();
        delay(100);
      }
    }  // End submenu=3

    //**********************************************************************************/

    if (submenu == 4) {  //[Toggle Low Voltage Shutdown]
      okay = false;
      LV_Shutdown = !LV_Shutdown;  // Inverse the Shutdown State.
      submenu = 0;
      counter = 8;
      if (LV_Shutdown == false) {
        failsafe = false;
      }
    }  // End Submenu

    //**********************************************************************************/

    if (submenu == 5)  //[Sub-Option Folder for About]
    {
      display.fillScreen(BLACK);
      submenu = 0;
      counter = 10;
      okay = false;

      display.drawBitmap(0, 0, channel, 128, 64, WHITE);
      display.display();
      delay(5000);

    }  // End submenu=5

    if (submenu == 6) {        //[Sub-Option Folder for Back]
      counter = setpulsetime;  // Reset Counter
      break;                   //[Exit the loop and go back to home Screen]
    }                          // End submenu=6;

    display.display();

    //*********************************************************************/
    // Actions for the menu and Submenu

    //*********************************************************************/
    // From Main menu to secondary menu.
    if (okay == true) {  // [Action for Set Pulse Menu]
      if (submenu == 0) {
        if (page == 1) {
          submenu = 1;
          counter = 0;
          okay = false;
          delay(100);
        }

        if (page == 2) {
          submenu = 2;
          counter = 0;
          okay = false;
          delay(100);
        }

        if (page == 3)  //[Set Alarm VOltage]
        {
          submenu = 3;
          // counter=0; //Because we use counter to set VOltage value.
          okay = false;
          delay(100);
        }

        if (page == 4) {
          submenu = 4;
          counter = 0;
          okay = false;
          delay(100);
        }

        if (page == 5) {
          submenu = 5;
          counter = 1;
          okay = false;
          delay(100);
        }

        if (page == 6) {
          submenu = 6;
          counter = 1;
          okay = false;
          delay(100);
        }
      }
    }

    if (okay == true) {
      if (submenu == 1) {  //[Send User back to main menu]
        if (page == 1) {
          submenu = 0;
          counter = 1;
          okay = false;
          pulse = 1;  //[1 Pulse Mode]
          delay(100);
        }
        if (page == 2) {
          submenu = 0;
          counter = 1;
          okay = false;
          pulse = 2;  //[2 Pulse Mode]
        }
        if (page == 3) {
          submenu = 0;
          counter = 1;
          okay = false;
          pulse = 3;  //[3 Pulse Mode]
          break;
        }
        if (page == 4) {
          submenu = 0;
          counter = 1;
          okay = false;
          pulse = 4;  //[4 Pulse Mode]
        }
      }

      //*************************************************************************************/

      if (submenu == 2) {  // [Action for Set Set Mode]
        if (page == 1) {
          submenu = 0;
          counter = 6;
          okay = false;
          WeldMode = 1;  //[Batt Weld]
          delay(100);
        }
        if (page == 2) {
          submenu = 0;  // Main Menu
          counter = 2;
          okay = false;
          WeldMode = 2;  //[Ext.relay]
          delay(100);
        }
        if (page == 3) {
          submenu = 0;  // Main Menu
          counter = 2;
          okay = false;
          WeldMode = 3;  //[Ac Switch]
          delay(100);
        }
      }

      if (submenu == 5) {  // [Action for About]
        if (page == 1) {
          submenu = 0;
          counter = 2;
          okay = false;
          delay(100);
        }
      }

    }  // End of all the menus

  }             // End While loop
  save_data();  //[Save the Updated data to EEPROM]
}  // End Settings Void.********************************************************************/

//*************************************************************************************/
// Print Values to OLED on Home Screeen.

void printText() {
  display.clearDisplay();

  display.drawLine(0, 10, 127, 10, WHITE);
  display.drawLine(0, 50, 127, 50, WHITE);
  display.setTextSize(1);
  display.setTextColor(WHITE, BLACK);
  display.setCursor(128 - 36, 0);
  display.print(voltage);  //[Display Input Voltage]
  display.setCursor(127 - 6, 0);
  display.println("V");

  display.setCursor(0, 0);
  display.print("Mode: ");
  display.println(WeldMode);  //[Display Weld Mode]

  if (failsafe == false) {   // show pulse time if failsafe is deactivated.
    display.setTextSize(4);  //[Display Pulse Time]
    display.setCursor(3, 16);
    display.println(setpulsetime);
    display.setTextSize(2);

    if (setpulsetime < 10) {
      display.setTextColor(WHITE, BLACK);
      display.setCursor(25, 28);
      display.println("ms");
    } else {
      display.setTextColor(WHITE, BLACK);
      display.setCursor(50, 28);
      display.println("ms");
    }

    display.drawRoundRect(85, 14, 43, 33, 5, WHITE);  //[Display Pulse Quantity in Round Rectangle.]
    display.setTextSize(3);
    display.setTextColor(WHITE);
    display.setCursor(92, 19);
    display.print(pulse);
    display.setCursor(110, 28);
    display.setTextSize(2);
    display.print("P");
  } else {
    display.setCursor(10, 20);
    display.setTextSize(2);
    display.print("Batt Low!");
  }

  display.setCursor(5 + 20, 55);  //[Display Set Low Voltage,]
  display.setTextSize(1);
  display.print("LV: ");
  display.print(Alm_Volt);
  display.print("V");

  display.drawRoundRect(65 + 20, 53, 16, 10, 3, WHITE);  //[Indicator for Low Voltage Shutdown Enable/disable]
  if (LV_Shutdown == true) {
    //(x,y, length, bredth, Color)
    display.fillRect(65 + 4 + 20, 56, 16 - 8, 4, WHITE);
  } else {
    display.fillRect(65 + 4 + 20, 56, 16 - 8, 4, BLACK);
  }
  display.fillRect(105, 52, 22, 11, BLACK);  // To supress Display Noise

  display.drawRoundRect(55, 0, 20, 8, 3, WHITE);  //(x,y, length, bredth, radius, color)
  if (pulsetime == setpulsetime) {
    display.drawRect(55 + 4, 3, 20 - 8, 2, WHITE);  //(x,y, length, bredth, Color)
  } else {
    display.drawRect(55 + 4, 3, 20 - 8, 2, BLACK);
  }
  display.display();
}

void low_voltage() {
  while (a < 8) {
    display.clearDisplay();
    display.drawRoundRect(6, 20, 114, 24, 4, WHITE);
    display.setTextColor(WHITE, BLACK);
    display.setCursor(10, 25);  //[Display Set Low Voltage,]
    display.setTextSize(2);
    display.print("Batt Low!");

    display.display();
    digitalWrite(buzzer, HIGH);
    delay(400);

    display.drawRoundRect(6, 20, 114, 24, 4, WHITE);
    display.setTextColor(BLACK, WHITE);
    display.setCursor(10, 25);  //[Display Set Low Voltage,]
    display.setTextSize(2);
    display.print("Batt Low!");
    display.display();
    digitalWrite(buzzer, LOW);
    delay(200);
    a++;
  }
}

void save_data() {  //[Save data to Eeprom if Changed]
  if (EEPROM.read(1) != pulsetime) {
    EEPROM.write(1, pulsetime);
  }
  if (EEPROM.read(2) != pulse) {
    EEPROM.write(2, pulse);
  }
  if (EEPROM.read(3) != WeldMode) {
    EEPROM.write(3, WeldMode);
  }
  if (EEPROM.read(4) != LV_Shutdown) {
    EEPROM.write(4, LV_Shutdown);
  }
  volt = Alm_Volt * 10;

  if (EEPROM.read(6) != volt) {
    EEPROM.write(6, volt);
  }

  /*
  if (Alm_Volt != EEPROM_readAnything(6, Alm_Volt)){
   EEPROM_writeAnything(6, Alm_Volt);
  }
  */
}
2

Test using the example code that comes with the Adafruit_SSD1306 library. Does that run ok?

3

Suggest you try using the F() macro. For example

display.print(F("> L-V Shutdown: ON"));

Do this for every similar use of display.print() in your code (where a literal string is being printed).

Without the F() macro, all of those strings will be taking up RAM memory.

4

You didn't ask for this, but... My feedback, having skimmed through your code, is that there is huge scope for improvement.

There are massive amounts of repeated code. This is a common problem with code written by less experienced coders. Much too much copying and pasting went into writing it. This is considered a sin by experienced coders. It makes the code long and difficult to debug and maintain/enhance in the future.

If you want some tips how to reduce the repetition, please ask.

5

I try that but still error come SSD1306 allocation failed

6

if you have some solutions please help, i am just beginner. can't understand lot.

7

Dear i try to disable under mention code area, then previous error not come, can you help me to correct under attach code.

void Settings() {  // when rotatory is pressed two times, open this menu page.
  counter = 1;     // To Always highlight 1st menu.
  int submenu = 0;
  int page = 1;
  boolean okay = false;  // To detect button press in menu.
  boolean pushState = HIGH;

  //******************************************************************/
  while (true) {  // run this code for infinity to display the settings menu

    // Read if button is pressed.
    if (digitalRead(push) == LOW) {  // footSwitch becomes HIGH when the foot button is pressed.
      if (pushState != LOW) {
        okay = true;  // Say button has pressed
      }

      pushState = LOW;
    } else {
      pushState = HIGH;
      okay = false;
    }

    // End
    //******************************************************************/

    // Draw Main Menu on top section of the display.

    display.setTextSize(1);
    display.clearDisplay();
    display.setTextColor(WHITE, BLACK);
    display.setCursor(37, 0);
    display.print("MAIN MENU");
    display.drawFastHLine(0, 10, 127, WHITE);
    // First Window of the menu (First Window Concists of 6 pages or options)  [Main Menu]

    if (submenu == 0)  // First Option [Main Menu Screen]
    {

      if (counter >= 0 && counter <= 2) {  //[Highlight Set Pulse Menu]
        display.setTextSize(1);
        display.setCursor(0, 13);
        display.setTextColor(BLACK, WHITE);
        display.print("> Set Pulse");
        display.setCursor(0, 23);
        display.setTextColor(WHITE, BLACK);
        display.print("> Set Mode");
        display.setCursor(0, 33);
        display.print("> Set Low Volt");
        display.setCursor(0, 43);
        if (LV_Shutdown == false) {
          display.print("> L-V Shutdown: OFF");
        } else {
          display.print("> L-V Shutdown: ON");
        }
        page = 1;
      }

      if (counter > 2 && counter <= 4) {  //[Highlight Select Weldig Mode Menu]
        display.setTextSize(1);
        display.setCursor(0, 13);
        display.setTextColor(WHITE);
        display.print("> Set Pulse");
        display.setCursor(0, 23);
        display.setTextColor(BLACK, WHITE);
        display.print("> Set Mode");
        display.setTextColor(WHITE);
        display.setCursor(0, 33);
        display.print("> Set Low Volt");
        display.setCursor(0, 43);
        if (LV_Shutdown == false) {
          display.print("> L-V Shutdown: OFF");
        } else {
          display.print("> L-V Shutdown: ON");
        }
        page = 2;
      }

      if (counter > 4 && counter <= 6) {  //[Highlight Set Low VOlt Menu]
        display.setTextSize(1);
        display.setCursor(0, 13);
        display.setTextColor(WHITE);
        display.print("> Set Pulse");
        display.setCursor(0, 23);
        display.print("> Set Mode");
        display.setTextColor(BLACK, WHITE);
        display.setCursor(0, 33);
        display.print("> Set Low Volt");
        display.setTextColor(WHITE);
        display.setCursor(0, 43);
        if (LV_Shutdown == false) {
          display.print("> L-V Shutdown: OFF");
        } else {
          display.print("> L-V Shutdown: ON");
        }
        page = 3;
      }

      if (counter > 6 && counter <= 8) {  //[Highlight Low Voltage Shutdown Menu]
        display.setTextSize(1);
        display.setCursor(0, 13);
        display.setTextColor(WHITE);
        display.print("> Set Pulse");
        display.setCursor(0, 23);
        display.print("> Set Mode");
        display.setCursor(0, 33);
        display.print("> Set Low Volt");
        display.setTextColor(BLACK, WHITE);
        display.setCursor(0, 43);
        if (LV_Shutdown == false) {
          display.print("> L-V Shutdown: OFF");
        } else {
          display.print("> L-V Shutdown: ON");
        }
        page = 4;
      }

      if (counter > 8 && counter <= 10) {  //[Highlight About Menu]
        display.setTextSize(1);
        display.setTextColor(WHITE, BLACK);
        display.setCursor(0, 13);
        display.print("> Set Mode");
        display.setCursor(0, 23);
        display.print("> Set Low Volt");
        display.setCursor(0, 33);
        if (LV_Shutdown == false) {
          display.print("> L-V Shutdown: OFF");
        } else {
          display.print("> L-V Shutdown: ON");
        }
        display.setTextColor(BLACK, WHITE);
        display.setCursor(0, 43);
        display.print("> About");
        page = 5;
      }

      if (counter > 10) {  //[Highlight Back Menu]
        display.setTextSize(1);
        display.setTextColor(WHITE, BLACK);
        display.setCursor(0, 13);
        display.print("> Set Low Volt");
        display.setCursor(0, 23);
        if (LV_Shutdown == false) {
          display.print("> L-V Shutdown: OFF");
        } else {
          display.print("> L-V Shutdown: ON");
        }
        display.setCursor(0, 33);
        display.print("> About");
        display.setCursor(0, 43);
        display.setTextColor(BLACK, WHITE);
        display.print("> Back");
        page = 6;
      }

      display.display();
    }  // End Submenu=1 [Main Menu]

    //**********************************************************************************/

    if (submenu == 1)  //[Sub-Option Folder for SET PULSE]
    {
      display.setTextSize(1);
      display.clearDisplay();

      if (counter >= 0 && counter <= 2)  //[First option of Set Pulse]
      {
        display.setCursor(0, 0);
        display.setTextColor(BLACK, WHITE);
        display.print("> 1 Pulse");
        display.setCursor(0, 10);
        display.setTextColor(WHITE, BLACK);
        display.print("> 2 Pulses");
        display.setCursor(0, 20);
        display.print("> 3 Pulses");
        display.setCursor(0, 30);
        display.print("> 4 Pulses");
        page = 1;
      }

      if (counter > 2 && counter <= 4)  //[Second option of Set Pulse]
      {
        display.setCursor(0, 0);
        display.setTextColor(WHITE, BLACK);
        display.print("> 1 Pulse");
        display.setCursor(0, 10);
        display.setTextColor(BLACK, WHITE);
        display.print("> 2 Pulses");
        display.setTextColor(WHITE, BLACK);
        display.setCursor(0, 20);
        display.print("> 3 Pulses");
        display.setCursor(0, 30);
        display.print("> 4 Pulses");
        page = 2;
      }

      if (counter > 4 && counter <= 6)  //[Third option of Set Pulse]
      {
        display.setCursor(0, 0);
        display.setTextColor(WHITE, BLACK);
        display.print("> 1 Pulse");
        display.setCursor(0, 10);
        display.print("> 2 Pulses");
        display.setTextColor(BLACK, WHITE);
        display.setCursor(0, 20);
        display.print("> 3 Pulses");
        display.setTextColor(WHITE, BLACK);
        display.setCursor(0, 30);
        display.print("> 4 Pulses");
        page = 3;
      }

      if (counter > 6)  //[Forth option of Set Pulse]
      {
        display.setCursor(0, 0);
        display.setTextColor(WHITE, BLACK);
        display.print("> 1 Pulse");
        display.setCursor(0, 10);
        display.print("> 2 Pulses");
        display.setCursor(0, 20);
        display.print("> 3 Pulses");
        display.setTextColor(BLACK, WHITE);
        display.setCursor(0, 30);
        display.print("> 4 Pulses");
        page = 4;
      }
    }

    //**********************************************************************************/

    if (submenu == 2)  //[Sub-Option Folder for Set Mode]
    {

      // Draw Set Weld Mode on top section of the display.
      display.setTextSize(1);
      display.clearDisplay();
      display.setTextColor(WHITE, BLACK);
      display.setCursor(25, 0);  //[Center Aligned]
      display.print("Set Weld Mode");
      display.drawFastHLine(0, 10, 127, WHITE);

      if (counter >= 0 && counter <= 2)  //[First option of Set Mode]
      {
        display.setCursor(0, 14);
        display.setTextColor(BLACK, WHITE);
        display.print("1. Batt Weld");
        display.setCursor(0, 24);
        display.setTextColor(WHITE, BLACK);
        display.print("2. Ext Relay");
        display.setCursor(0, 34);
        display.print("3. Ac Switch");
        page = 1;
      }

      if (counter > 2 && counter <= 4)  //[Second option of Set Mode]
      {
        display.setCursor(0, 14);
        display.setTextColor(WHITE, BLACK);
        display.print("1. Batt Weld");
        display.setCursor(0, 24);
        display.setTextColor(BLACK, WHITE);
        display.print("2. Ext Relay");
        display.setCursor(0, 34);
        display.setTextColor(WHITE, BLACK);
        display.print("3. Ac Switch");
        page = 2;
        //   okay=false;
      }

      if (counter > 4)  //[Third option of Set Mode]
      {
        display.setCursor(0, 14);
        display.setTextColor(WHITE, BLACK);
        display.print("1. Batt Weld");
        display.setCursor(0, 24);
        display.print("2. Ext Relay");
        display.setCursor(0, 34);
        display.setTextColor(BLACK, WHITE);
        display.print("3. Ac Switch");
        page = 3;
        //   okay=false;
      }
    }  // End Submenu = 2

    //**********************************************************************************/

    if (submenu == 3)  //[Sub-Option Folder for Low Voltage]
    {
      submenu = 0;
      counter = Alm_Volt * 10;  // Sync rotary with previously set value
      bool n = false;
      pushState = LOW;

      while (true) {  // run this loop for infinity untill the push button is pressed.

        display.setTextSize(1);
        display.clearDisplay();
        display.setTextColor(WHITE, BLACK);
        display.setCursor(31, 0);
        display.print("Set Low V");
        display.drawFastHLine(0, 10, 127, WHITE);

        Alm_Volt = map(counter, 0, 200, 0, 2000);
        Alm_Volt = Alm_Volt / 100;

        display.setTextSize(2);

        display.setCursor(0, 20);
        display.print("Volt:");
        display.println(Alm_Volt);

        if (digitalRead(push) == LOW) {  //[Read if button is pressed]
          if (pushState != LOW) {
            n = true;  // Break while loop.
          }
          pushState = LOW;
        } else {
          pushState = HIGH;
          n = false;
        }
        if (n == true) {  // If button is pressed, end while loop.
          counter = 6;
          break;
        }

        display.display();
        delay(100);
      }
    }  // End submenu=3

    //**********************************************************************************/

    if (submenu == 4) {  //[Toggle Low Voltage Shutdown]
      okay = false;
      LV_Shutdown = !LV_Shutdown;  // Inverse the Shutdown State.
      submenu = 0;
      counter = 8;
      if (LV_Shutdown == false) {
        failsafe = false;
      }
    }  // End Submenu

    //**********************************************************************************/

    if (submenu == 5)  //[Sub-Option Folder for About]
    {
      display.fillScreen(BLACK);
      submenu = 0;
      counter = 10;
      okay = false;

      display.drawBitmap(0, 0, channel, 128, 64, WHITE);
      display.display();
      delay(5000);

    }  // End submenu=5

    if (submenu == 6) {        //[Sub-Option Folder for Back]
      counter = setpulsetime;  // Reset Counter
      break;                   //[Exit the loop and go back to home Screen]
    }                          // End submenu=6;

    display.display();

    //*********************************************************************/
    // Actions for the menu and Submenu

    //*********************************************************************/
    // From Main menu to secondary menu.
    if (okay == true) {  // [Action for Set Pulse Menu]
      if (submenu == 0) {
        if (page == 1) {
          submenu = 1;
          counter = 0;
          okay = false;
          delay(100);
        }

        if (page == 2) {
          submenu = 2;
          counter = 0;
          okay = false;
          delay(100);
        }

        if (page == 3)  //[Set Alarm VOltage]
        {
          submenu = 3;
          // counter=0; //Because we use counter to set VOltage value.
          okay = false;
          delay(100);
        }

        if (page == 4) {
          submenu = 4;
          counter = 0;
          okay = false;
          delay(100);
        }

        if (page == 5) {
          submenu = 5;
          counter = 1;
          okay = false;
          delay(100);
        }

        if (page == 6) {
          submenu = 6;
          counter = 1;
          okay = false;
          delay(100);
        }
      }
    }

    if (okay == true) {
      if (submenu == 1) {  //[Send User back to main menu]
        if (page == 1) {
          submenu = 0;
          counter = 1;
          okay = false;
          pulse = 1;  //[1 Pulse Mode]
          delay(100);
        }
        if (page == 2) {
          submenu = 0;
          counter = 1;
          okay = false;
          pulse = 2;  //[2 Pulse Mode]
        }
        if (page == 3) {
          submenu = 0;
          counter = 1;
          okay = false;
          pulse = 3;  //[3 Pulse Mode]
          break;
        }
        if (page == 4) {
          submenu = 0;
          counter = 1;
          okay = false;
          pulse = 4;  //[4 Pulse Mode]
        }
      }

      //*************************************************************************************/

      if (submenu == 2) {  // [Action for Set Set Mode]
        if (page == 1) {
          submenu = 0;
          counter = 6;
          okay = false;
          WeldMode = 1;  //[Batt Weld]
          delay(100);
        }
        if (page == 2) {
          submenu = 0;  // Main Menu
          counter = 2;
          okay = false;
          WeldMode = 2;  //[Ext.relay]
          delay(100);
        }
        if (page == 3) {
          submenu = 0;  // Main Menu
          counter = 2;
          okay = false;
          WeldMode = 3;  //[Ac Switch]
          delay(100);
        }
      }

      if (submenu == 5) {  // [Action for About]
        if (page == 1) {
          submenu = 0;
          counter = 2;
          okay = false;
          delay(100);
        }
      }

    }  // End of all the menus

  }             // End While loop
  save_data();  //[Save the Updated data to EEPROM]
}
8

Share that code, please.

9

I don't understand. What is your native language? Perhaps there is a forum category where that language is spoken. If not, please write in your own language, then use Google to translate into English.

10

The area of ​​deficiency is shown below.

void Settings() {  // when rotatory is pressed two times, open this menu page.
  counter = 1;     // To Always highlight 1st menu.
  int submenu = 0;
  int page = 1;
  boolean okay = false;  // To detect button press in menu.
  boolean pushState = HIGH;

  //******************************************************************/
  while (true) {  // run this code for infinity to display the settings menu

    // Read if button is pressed.
    if (digitalRead(push) == LOW) {  // footSwitch becomes HIGH when the foot button is pressed.
      if (pushState != LOW) {
        okay = true;  // Say button has pressed
      }

      pushState = LOW;
    } else {
      pushState = HIGH;
      okay = false;
    }

    // End
    //******************************************************************/

    // Draw Main Menu on top section of the display.

    display.setTextSize(1);
    display.clearDisplay();
    display.setTextColor(WHITE, BLACK);
    display.setCursor(37, 0);
    display.print("MAIN MENU");
    display.drawFastHLine(0, 10, 127, WHITE);
    // First Window of the menu (First Window Concists of 6 pages or options)  [Main Menu]

    if (submenu == 0)  // First Option [Main Menu Screen]
    {

      if (counter >= 0 && counter <= 2) {  //[Highlight Set Pulse Menu]
        display.setTextSize(1);
        display.setCursor(0, 13);
        display.setTextColor(BLACK, WHITE);
        display.print("> Set Pulse");
        display.setCursor(0, 23);
        display.setTextColor(WHITE, BLACK);
        display.print("> Set Mode");
        display.setCursor(0, 33);
        display.print("> Set Low Volt");
        display.setCursor(0, 43);
        if (LV_Shutdown == false) {
          display.print("> L-V Shutdown: OFF");
        } else {
          display.print("> L-V Shutdown: ON");
        }
        page = 1;
      }

      if (counter > 2 && counter <= 4) {  //[Highlight Select Weldig Mode Menu]
        display.setTextSize(1);
        display.setCursor(0, 13);
        display.setTextColor(WHITE);
        display.print("> Set Pulse");
        display.setCursor(0, 23);
        display.setTextColor(BLACK, WHITE);
        display.print("> Set Mode");
        display.setTextColor(WHITE);
        display.setCursor(0, 33);
        display.print("> Set Low Volt");
        display.setCursor(0, 43);
        if (LV_Shutdown == false) {
          display.print("> L-V Shutdown: OFF");
        } else {
          display.print("> L-V Shutdown: ON");
        }
        page = 2;
      }

      if (counter > 4 && counter <= 6) {  //[Highlight Set Low VOlt Menu]
        display.setTextSize(1);
        display.setCursor(0, 13);
        display.setTextColor(WHITE);
        display.print("> Set Pulse");
        display.setCursor(0, 23);
        display.print("> Set Mode");
        display.setTextColor(BLACK, WHITE);
        display.setCursor(0, 33);
        display.print("> Set Low Volt");
        display.setTextColor(WHITE);
        display.setCursor(0, 43);
        if (LV_Shutdown == false) {
          display.print("> L-V Shutdown: OFF");
        } else {
          display.print("> L-V Shutdown: ON");
        }
        page = 3;
      }

      if (counter > 6 && counter <= 8) {  //[Highlight Low Voltage Shutdown Menu]
        display.setTextSize(1);
        display.setCursor(0, 13);
        display.setTextColor(WHITE);
        display.print("> Set Pulse");
        display.setCursor(0, 23);
        display.print("> Set Mode");
        display.setCursor(0, 33);
        display.print("> Set Low Volt");
        display.setTextColor(BLACK, WHITE);
        display.setCursor(0, 43);
        if (LV_Shutdown == false) {
          display.print("> L-V Shutdown: OFF");
        } else {
          display.print("> L-V Shutdown: ON");
        }
        page = 4;
      }

      if (counter > 8 && counter <= 10) {  //[Highlight About Menu]
        display.setTextSize(1);
        display.setTextColor(WHITE, BLACK);
        display.setCursor(0, 13);
        display.print("> Set Mode");
        display.setCursor(0, 23);
        display.print("> Set Low Volt");
        display.setCursor(0, 33);
        if (LV_Shutdown == false) {
          display.print("> L-V Shutdown: OFF");
        } else {
          display.print("> L-V Shutdown: ON");
        }
        display.setTextColor(BLACK, WHITE);
        display.setCursor(0, 43);
        display.print("> About");
        page = 5;
      }

      if (counter > 10) {  //[Highlight Back Menu]
        display.setTextSize(1);
        display.setTextColor(WHITE, BLACK);
        display.setCursor(0, 13);
        display.print("> Set Low Volt");
        display.setCursor(0, 23);
        if (LV_Shutdown == false) {
          display.print("> L-V Shutdown: OFF");
        } else {
          display.print("> L-V Shutdown: ON");
        }
        display.setCursor(0, 33);
        display.print("> About");
        display.setCursor(0, 43);
        display.setTextColor(BLACK, WHITE);
        display.print("> Back");
        page = 6;
      }

      display.display();
    }  // End Submenu=1 [Main Menu]

    //**********************************************************************************/

    if (submenu == 1)  //[Sub-Option Folder for SET PULSE]
    {
      display.setTextSize(1);
      display.clearDisplay();

      if (counter >= 0 && counter <= 2)  //[First option of Set Pulse]
      {
        display.setCursor(0, 0);
        display.setTextColor(BLACK, WHITE);
        display.print("> 1 Pulse");
        display.setCursor(0, 10);
        display.setTextColor(WHITE, BLACK);
        display.print("> 2 Pulses");
        display.setCursor(0, 20);
        display.print("> 3 Pulses");
        display.setCursor(0, 30);
        display.print("> 4 Pulses");
        page = 1;
      }

      if (counter > 2 && counter <= 4)  //[Second option of Set Pulse]
      {
        display.setCursor(0, 0);
        display.setTextColor(WHITE, BLACK);
        display.print("> 1 Pulse");
        display.setCursor(0, 10);
        display.setTextColor(BLACK, WHITE);
        display.print("> 2 Pulses");
        display.setTextColor(WHITE, BLACK);
        display.setCursor(0, 20);
        display.print("> 3 Pulses");
        display.setCursor(0, 30);
        display.print("> 4 Pulses");
        page = 2;
      }

      if (counter > 4 && counter <= 6)  //[Third option of Set Pulse]
      {
        display.setCursor(0, 0);
        display.setTextColor(WHITE, BLACK);
        display.print("> 1 Pulse");
        display.setCursor(0, 10);
        display.print("> 2 Pulses");
        display.setTextColor(BLACK, WHITE);
        display.setCursor(0, 20);
        display.print("> 3 Pulses");
        display.setTextColor(WHITE, BLACK);
        display.setCursor(0, 30);
        display.print("> 4 Pulses");
        page = 3;
      }

      if (counter > 6)  //[Forth option of Set Pulse]
      {
        display.setCursor(0, 0);
        display.setTextColor(WHITE, BLACK);
        display.print("> 1 Pulse");
        display.setCursor(0, 10);
        display.print("> 2 Pulses");
        display.setCursor(0, 20);
        display.print("> 3 Pulses");
        display.setTextColor(BLACK, WHITE);
        display.setCursor(0, 30);
        display.print("> 4 Pulses");
        page = 4;
      }
    }

    //**********************************************************************************/

    if (submenu == 2)  //[Sub-Option Folder for Set Mode]
    {

      // Draw Set Weld Mode on top section of the display.
      display.setTextSize(1);
      display.clearDisplay();
      display.setTextColor(WHITE, BLACK);
      display.setCursor(25, 0);  //[Center Aligned]
      display.print("Set Weld Mode");
      display.drawFastHLine(0, 10, 127, WHITE);

      if (counter >= 0 && counter <= 2)  //[First option of Set Mode]
      {
        display.setCursor(0, 14);
        display.setTextColor(BLACK, WHITE);
        display.print("1. Batt Weld");
        display.setCursor(0, 24);
        display.setTextColor(WHITE, BLACK);
        display.print("2. Ext Relay");
        display.setCursor(0, 34);
        display.print("3. Ac Switch");
        page = 1;
      }

      if (counter > 2 && counter <= 4)  //[Second option of Set Mode]
      {
        display.setCursor(0, 14);
        display.setTextColor(WHITE, BLACK);
        display.print("1. Batt Weld");
        display.setCursor(0, 24);
        display.setTextColor(BLACK, WHITE);
        display.print("2. Ext Relay");
        display.setCursor(0, 34);
        display.setTextColor(WHITE, BLACK);
        display.print("3. Ac Switch");
        page = 2;
        //   okay=false;
      }

      if (counter > 4)  //[Third option of Set Mode]
      {
        display.setCursor(0, 14);
        display.setTextColor(WHITE, BLACK);
        display.print("1. Batt Weld");
        display.setCursor(0, 24);
        display.print("2. Ext Relay");
        display.setCursor(0, 34);
        display.setTextColor(BLACK, WHITE);
        display.print("3. Ac Switch");
        page = 3;
        //   okay=false;
      }
    }  // End Submenu = 2

    //**********************************************************************************/

    if (submenu == 3)  //[Sub-Option Folder for Low Voltage]
    {
      submenu = 0;
      counter = Alm_Volt * 10;  // Sync rotary with previously set value
      bool n = false;
      pushState = LOW;

      while (true) {  // run this loop for infinity untill the push button is pressed.

        display.setTextSize(1);
        display.clearDisplay();
        display.setTextColor(WHITE, BLACK);
        display.setCursor(31, 0);
        display.print("Set Low V");
        display.drawFastHLine(0, 10, 127, WHITE);

        Alm_Volt = map(counter, 0, 200, 0, 2000);
        Alm_Volt = Alm_Volt / 100;

        display.setTextSize(2);

        display.setCursor(0, 20);
        display.print("Volt:");
        display.println(Alm_Volt);

        if (digitalRead(push) == LOW) {  //[Read if button is pressed]
          if (pushState != LOW) {
            n = true;  // Break while loop.
          }
          pushState = LOW;
        } else {
          pushState = HIGH;
          n = false;
        }
        if (n == true) {  // If button is pressed, end while loop.
          counter = 6;
          break;
        }

        display.display();
        delay(100);
      }
    }  // End submenu=3

    //**********************************************************************************/

    if (submenu == 4) {  //[Toggle Low Voltage Shutdown]
      okay = false;
      LV_Shutdown = !LV_Shutdown;  // Inverse the Shutdown State.
      submenu = 0;
      counter = 8;
      if (LV_Shutdown == false) {
        failsafe = false;
      }
    }  // End Submenu

    //**********************************************************************************/

    if (submenu == 5)  //[Sub-Option Folder for About]
    {
      display.fillScreen(BLACK);
      submenu = 0;
      counter = 10;
      okay = false;

      display.drawBitmap(0, 0, channel, 128, 64, WHITE);
      display.display();
      delay(5000);

    }  // End submenu=5

    if (submenu == 6) {        //[Sub-Option Folder for Back]
      counter = setpulsetime;  // Reset Counter
      break;                   //[Exit the loop and go back to home Screen]
    }                          // End submenu=6;

    display.display();

    //*********************************************************************/
    // Actions for the menu and Submenu

    //*********************************************************************/
    // From Main menu to secondary menu.
    if (okay == true) {  // [Action for Set Pulse Menu]
      if (submenu == 0) {
        if (page == 1) {
          submenu = 1;
          counter = 0;
          okay = false;
          delay(100);
        }

        if (page == 2) {
          submenu = 2;
          counter = 0;
          okay = false;
          delay(100);
        }

        if (page == 3)  //[Set Alarm VOltage]
        {
          submenu = 3;
          // counter=0; //Because we use counter to set VOltage value.
          okay = false;
          delay(100);
        }

        if (page == 4) {
          submenu = 4;
          counter = 0;
          okay = false;
          delay(100);
        }

        if (page == 5) {
          submenu = 5;
          counter = 1;
          okay = false;
          delay(100);
        }

        if (page == 6) {
          submenu = 6;
          counter = 1;
          okay = false;
          delay(100);
        }
      }
    }

    if (okay == true) {
      if (submenu == 1) {  //[Send User back to main menu]
        if (page == 1) {
          submenu = 0;
          counter = 1;
          okay = false;
          pulse = 1;  //[1 Pulse Mode]
          delay(100);
        }
        if (page == 2) {
          submenu = 0;
          counter = 1;
          okay = false;
          pulse = 2;  //[2 Pulse Mode]
        }
        if (page == 3) {
          submenu = 0;
          counter = 1;
          okay = false;
          pulse = 3;  //[3 Pulse Mode]
          break;
        }
        if (page == 4) {
          submenu = 0;
          counter = 1;
          okay = false;
          pulse = 4;  //[4 Pulse Mode]
        }
      }

      //*************************************************************************************/

      if (submenu == 2) {  // [Action for Set Set Mode]
        if (page == 1) {
          submenu = 0;
          counter = 6;
          okay = false;
          WeldMode = 1;  //[Batt Weld]
          delay(100);
        }
        if (page == 2) {
          submenu = 0;  // Main Menu
          counter = 2;
          okay = false;
          WeldMode = 2;  //[Ext.relay]
          delay(100);
        }
        if (page == 3) {
          submenu = 0;  // Main Menu
          counter = 2;
          okay = false;
          WeldMode = 3;  //[Ac Switch]
          delay(100);
        }
      }

      if (submenu == 5) {  // [Action for About]
        if (page == 1) {
          submenu = 0;
          counter = 2;
          okay = false;
          delay(100);
        }
      }

    }  // End of all the menus

  }             // End While loop
  save_data();  //[Save the Updated data to EEPROM]
}
11

What is deficient? How does this deficiency affect the code?

12

The error doesn't appear when I remove this area but I can't get back to the main menu without this code.

void Settings() {

}
13

The function you are referring to contains many string literals which is why I suggested to use F() macro to reduce RAM memory consumption.

In post #5 you said that you tried this but still got the error. In post #8 I asked you to post that code, but you have not done so.

In post #2 I gave another suggestion but you have ignored that.

14

First of all, I apologize, but I didn't understand everything you said. Can you take my complete code and fix it and give it back to me?

Can you please show me an example of how to include this in my code?

display.print(F("> L-V Shutdown: ON"));
15

To lines that use display.print with text, for example:

display.print("> L-V Shutdown: ON");

add "F" and "(" and ")" so it looks like this:

display.print(F("> L-V Shutdown: ON"));

Also for Serial.print()

The SSD1306 requires half of the available dynamic memory on a Classic Nano or Arduino Uno R3 to run.

1 Like
16

Yes, I can do that.

But I won't do that, because that would take away an opportunity for your to learn. You have a lot to learn.

I already gave you the example. That line is the example. I took a line from your code and changed it to include the F() macro. Now it's up to you to do the others.

Why did you say that you had tried my suggestion? I think that you try to trick me to fix the code for you.

I will help you further when you have shown that you can help yourself.

3 Likes
17

now it's working, now I understand, thank you very much for your help.

:heart_decoration:

/*
 * Libraries to download
 * 2. SSD1306 Splash Screen: https://javl.github.io/image2cpp/  settings: Horigontal, Plain byte
 */

#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include "OneButton.h" //we need the OneButton library to detect diffrent push functions.
#include <EEPROM.h>


#define SCREEN_ADDRESS 0x3C ///< See datasheet for Address;
Adafruit_SSD1306 display(128, 64, &Wire, -1);

/******************************************************************/
// For measuring Voltage

#define Vref A0                   // Voltage sense for input wire.
int offset = 50;                  // To correct the voltage voltage loss in diode
unsigned long previousMillis = 0; // for volatage measuring every 5sec.
double voltage;                   // Variable that stores voltage value in Volts.

const unsigned char channel[] PROGMEM = {

    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x3d, 0xff, 0xc0, 0x3c, 0x00, 0x07, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x1c, 0xff, 0x80, 0x38, 0x00, 0x03, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x1c, 0xff, 0x80, 0x38, 0x00, 0x03, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc7, 0xff, 0x9c, 0xf8, 0x0f, 0x39, 0xff, 0xe3, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc7, 0xff, 0x9c, 0xf8, 0x0f, 0x39, 0xff, 0xe3, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc6, 0x03, 0x9c, 0x3e, 0x33, 0xf9, 0xc0, 0x63, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc6, 0x03, 0x9c, 0x3e, 0x73, 0xf9, 0xc0, 0x63, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc6, 0x03, 0x9c, 0x1e, 0x73, 0xf9, 0xc0, 0x63, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc6, 0x03, 0x9c, 0x07, 0xf3, 0x39, 0xc0, 0x63, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc6, 0x03, 0x9c, 0x07, 0xf3, 0x39, 0xc0, 0x63, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc6, 0x03, 0x9f, 0x06, 0x70, 0xf9, 0xc0, 0x63, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc6, 0x03, 0x9f, 0x06, 0x70, 0xf9, 0xc0, 0x63, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc7, 0xff, 0x9c, 0x07, 0x8f, 0x39, 0xff, 0xe3, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc7, 0xff, 0x9c, 0x07, 0x8f, 0x39, 0xff, 0xe3, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc7, 0xff, 0x1c, 0x07, 0x8f, 0x38, 0xff, 0xe3, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x1c, 0xc6, 0x73, 0x38, 0x00, 0x03, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x1c, 0xc4, 0x73, 0x38, 0x00, 0x03, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x7c, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x7c, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x7e, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc1, 0xf0, 0x1f, 0xc6, 0x7f, 0xfe, 0x30, 0x03, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc1, 0xf0, 0x1f, 0xee, 0x7f, 0xff, 0x30, 0x07, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc6, 0x0f, 0xff, 0xff, 0xf0, 0x3f, 0xc1, 0x9f, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xe6, 0x0f, 0xff, 0xff, 0xf0, 0x3f, 0xc1, 0x9f, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xf9, 0x8e, 0x00, 0x03, 0xf0, 0x3c, 0x30, 0x7f, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xf9, 0xcc, 0x00, 0x01, 0xf0, 0x38, 0x30, 0x7f, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xf9, 0xde, 0x00, 0x01, 0xf0, 0x38, 0x30, 0x3f, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xf9, 0xff, 0xe0, 0x3e, 0x7f, 0x39, 0xce, 0x1f, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xf9, 0xff, 0xe0, 0x3c, 0x3f, 0x99, 0xcc, 0x0f, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xf9, 0xcf, 0x9c, 0xf8, 0x1f, 0xc1, 0xf0, 0x03, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xf9, 0xcf, 0x9c, 0xf8, 0x0f, 0xc1, 0xf0, 0x03, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xe1, 0xfe, 0x7c, 0xe7, 0x80, 0x03, 0xef, 0x0f, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc1, 0xfc, 0x7c, 0xc7, 0x80, 0x07, 0xcf, 0x9f, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xe1, 0xfc, 0x7c, 0xc7, 0x80, 0x07, 0x87, 0x9f, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xff, 0xf3, 0x9f, 0x38, 0x70, 0x1e, 0x00, 0x7f, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xff, 0xf3, 0x9f, 0x38, 0x70, 0x3e, 0x00, 0x7f, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x3c, 0x73, 0xfe, 0x0c, 0x1f, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x3e, 0x73, 0xfe, 0x0e, 0x1f, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xe1, 0xc0, 0x00, 0xce, 0x70, 0x00, 0x00, 0x7f, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc1, 0xc0, 0x00, 0xc6, 0x70, 0x00, 0x00, 0x7f, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x01, 0xff, 0x0f, 0x83, 0xff, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x01, 0xff, 0x1f, 0xcf, 0xff, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x01, 0xff, 0x3f, 0xcf, 0xff, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x1f, 0xc1, 0xff, 0x3d, 0xcf, 0xff, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x1f, 0xc1, 0xff, 0x39, 0xcf, 0xff, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc7, 0xff, 0x1d, 0xfe, 0x70, 0x3f, 0xc0, 0x1f, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc7, 0xff, 0x9c, 0xfe, 0x70, 0x3f, 0xc0, 0x1f, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc7, 0xff, 0x9c, 0xfc, 0x20, 0x1f, 0x80, 0x1f, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc6, 0x03, 0x9c, 0xc0, 0x0f, 0x00, 0x00, 0x1f, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc6, 0x03, 0x9c, 0xc0, 0x0f, 0x00, 0x00, 0x1f, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc6, 0x03, 0x9f, 0x07, 0x8c, 0xc0, 0x3c, 0x03, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc6, 0x03, 0x9f, 0x07, 0x8c, 0xc0, 0x3e, 0x03, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc6, 0x03, 0x9f, 0x07, 0xde, 0x40, 0x7c, 0x07, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc6, 0x03, 0x9f, 0x39, 0xff, 0x39, 0xf1, 0x9f, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc6, 0x03, 0x9f, 0x39, 0xff, 0x39, 0xf1, 0x9f, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc7, 0xff, 0x9c, 0x00, 0x73, 0xfe, 0x00, 0x1f, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc7, 0xff, 0x9c, 0x00, 0x73, 0xfe, 0x00, 0x1f, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x1c, 0xc0, 0x0c, 0xfd, 0xfc, 0x07, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x1c, 0xc0, 0x0c, 0xf9, 0xfe, 0x03, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x1d, 0xe0, 0x1c, 0xfd, 0xfe, 0x07, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};

/******************************************************************/
// For Rotatory Encoder

volatile bool clk_State;  // For Rotatory Encoder
volatile bool Last_State; // For Rotatory Encoder
volatile bool dt_State;   // For Rotatory Encoder
#define clk 2             // Rotatory encoder clk pin to D2
#define dt 3              // Rotatory encoder dt pin to D3
#define push 4            // Push input of Rotatory Encoder

/******************************************************************/
// Declaring GPIOs of Input and Output Devices.

const int footSwitch = 5; // Input from Footswitch is attached to D5
const int ac_Switch = 6;  // Output at acSwitch(onboard Relay) is attached to D6
const int Ext_Relay = 7;  // Output at Ext_Relay is attached to D7
const int Mosfet = 8;     // Output at Mosfet is attached to D8
#define buzzer 9          // Output at Ext_Relay is attached to D9
int a = 0;

/******************************************************************/
// Declaring Variables for the code

int pulse;           // Saved variable to store how many times the weld will repeat.
int16_t counter;     // rotatory encoder adds increments to it.
int8_t pulsetime;    // saved Pulse set by user.
int8_t setpulsetime; // Unsaved variable to store the time value untill it is saved.
int footSwitchstate = LOW;
int8_t WeldMode;     // Set Mosfet Switch as default mode.
boolean LV_Shutdown; // To Enable/Disable low voltage shutdown.
bool Busy = false;
boolean failsafe = false;

double Alm_Volt; // To Set Low voltage.
int volt;

OneButton button(push, true); // attach a button on pin 4 to the library

/******************************************************************/
// Starting Setup

void setup()
{                     // [Starting Setup]
  Serial.begin(9600); // Wait Serial Monitor to start.
#define SSD1306_NO_SPLASH ;

  // SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
  if (!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS))
  {
    Serial.println(F("SSD1306 allocation failed"));
    for (;;)
      ; // Don't proceed, loop forever
  }     // Show initial display buffer contents on the screen --
        // the library initializes this with an Adafruit splash screen.

  display.display();
  delay(2000); // Pause for 2 seconds

  // Serial.println("Initialization Complete");

  /******************************************************************/
  // Declaring GPIOs as Inputs/Outputs

  pinMode(Vref, INPUT);       // Vref Pin is assigned as Input
  pinMode(push, INPUT);       // Define the pin as input
  pinMode(clk, INPUT);        // Define as input
  pinMode(dt, INPUT);         // Define as input
  pinMode(footSwitch, INPUT); // Define footSwitch as Input
  pinMode(ac_Switch, OUTPUT); // Define ac_Switch as Input
  pinMode(Ext_Relay, OUTPUT); // Define Ext_relay as Input
  pinMode(buzzer, OUTPUT);    // Define buzzer as output
  pinMode(Mosfet, OUTPUT);    // Define Ext_relay as Input

  // Call the interrupt when rotatory encoder is moved.
  attachInterrupt(digitalPinToInterrupt(clk), Rotatory, CHANGE);

  /******************************************************************/
  // Time Interrupt

  TCCR1A = 0;
  TCCR1B = 0;
  TCCR1B |= (1 << CS11) | (1 << CS10);
  TIMSK1 = 0;
  TIMSK1 |= (1 << OCIE1A);

  Last_State = digitalRead(clk); // Scan Clk pin of Rotatory Encoder

  button.attachDoubleClick(doubleclick);  // link the function to be called on a doubleclick event.
  button.attachClick(singleclick);        // link the function to be called on a singleclick event.
  button.attachLongPressStart(longclick); // link the function to be called on a longpress event.

  pulsetime = EEPROM.read(1);
  pulse = EEPROM.read(2);
  WeldMode = EEPROM.read(3);
  LV_Shutdown = EEPROM.read(4);
  Alm_Volt = EEPROM.read(6); // to get the values in volt.
  Alm_Volt = Alm_Volt / 10;
  counter = pulsetime;
}

/******************************************************************/

void loop()
{

  button.tick();          // check the status of the button
  setpulsetime = counter; //[Set Pulse time]

  if (setpulsetime < 5)
  { //[set Minimum Pulse time to 5ms]
    setpulsetime = 5;
  }
  if (setpulsetime >= 70)
  { //[set Maximum Pulse time to 5ms]
    setpulsetime = 70;
  }

  /******************************************************************/
  // Call singleclick(Weld) Function when footswitch is pressed.

  if (digitalRead(footSwitch) == HIGH)
  { // footSwitch becomes HIGH when the foot button is pressed.
    if (footSwitchstate != HIGH)
    {
      singleclick(); // Run the single click function
      // failsafe = false;
    }

    footSwitchstate = HIGH;
  }
  else
  {
    footSwitchstate = LOW;
  }
  // End

  /******************************************************************/
  // Measure Voltage Every Second using millis function.

  unsigned long currentMillis = millis();
  if (currentMillis - previousMillis >= 1000)
  {                                 // [Measure Voltage Every Second]
    previousMillis = currentMillis; // save the last time you measured the voltage
    if (Busy == false)
    {               // Avoid checking voltage during welding
      check_Volt(); // Run the Check Volt function.
    }
  }

  if (WeldMode == 1 && voltage <= Alm_Volt && LV_Shutdown == true)
  { // Activate low voltage for mosfet Weld.
    failsafe = true;
  }

  if (failsafe == true && a != 8)
  {
    low_voltage(); // Call for Low_Voltage Function
  }

  if (a == 8 || failsafe != true)
  {
    printText(); // Print the values in the OLED if Batt Low Volt is On.
  }

} // End Loop

/******************************************************************/

void singleclick()
{ // what happens when the button is clicked
  int i = 1;
  if (failsafe != true)
  {
    while (i <= pulse)
    { // If multiweld is activted, repeat welding process.
      if (Busy == false)
      {             // Continue only if device has finished welding
        delay(100); // Wait 100ms after previous weld to next weld.
        if (WeldMode == 1)
        {
          digitalWrite(Mosfet, HIGH);
        }
        if (WeldMode == 2)
        {
          digitalWrite(Ext_Relay, HIGH);
        }
        if (WeldMode == 3)
        {
          digitalWrite(ac_Switch, HIGH);
        }
        digitalWrite(13, HIGH);
        digitalWrite(buzzer, HIGH);

        TCNT1 = 0;
        OCR1A = pulsetime * 250;
        bool Busy = true; // Set Device to Busy
      }
      i++;
    }
    return;
  }
} // End Function

/******************************************************************/
void doubleclick()
{
  Settings(); //[Call settings function to display Setting options]
}

void longclick()
{ // what happens when buton is long-pressed

  pulsetime = setpulsetime; // Save the Changed Vaalue in multiweld.
  save_data();              // Call Save data function which stores values on eeprom.
  // Serial.println("Values Saved");
}

/******************************************************************/
// Voltage Measuring Function
void check_Volt()
{
  int volt = analogRead(Vref);
  voltage = map(volt, 0, 1023, 0, 2628) + offset; // 1V = 100increments
  voltage = voltage / 100;                        // divide  by 100 to get the decimal values.
}

ISR(TIMER1_COMPA_vect)
{ //[Deactivate the All Weldig Outputs after Set pulse Time]
  digitalWrite(Mosfet, LOW);
  digitalWrite(Ext_Relay, LOW);
  digitalWrite(ac_Switch, LOW);
  digitalWrite(13, LOW);
  digitalWrite(buzzer, LOW);
  Busy = false;
}

/******************************************************************/
// Rotatory Encoder Function Using hardware Interrupt.
// It's value can be accessed at any function.

void Rotatory()
{
  clk_State = digitalRead(clk);
  dt_State = digitalRead(dt);
  if (clk_State != Last_State)
  {
    /* If the data state is different to the clock state,
    that means the encoder is rotating clockwise */

    if (dt_State != clk_State)
    {
      // up=true;
      counter++; // Increase Counter by 1 increment.
    }
    else
    {
      //  down=true;
      counter--;
    }
  }
  Last_State = clk_State; // Updates the previous state of the data with the current state
  if (counter <= 0)
  {
    counter = 0;
  }

  if (counter >= 250)
  {
    counter = 250;
  }
}

/******************************************************************/
// Menu Item

void Settings()
{              // when rotatory is pressed two times, open this menu page.
  counter = 1; // To Always highlight 1st menu.
  int submenu = 0;
  int page = 1;
  boolean okay = false; // To detect button press in menu.
  boolean pushState = HIGH;

  //******************************************************************/
  while (true)
  { // run this code for infinity to display the settings menu

    // Read if button is pressed.
    if (digitalRead(push) == LOW)
    { // footSwitch becomes HIGH when the foot button is pressed.
      if (pushState != LOW)
      {
        okay = true; // Say button has pressed
      }

      pushState = LOW;
    }
    else
    {
      pushState = HIGH;
      okay = false;
    }

    // End
    //******************************************************************/

    // Draw Main Menu on top section of the display.

    display.setTextSize(1);
    display.clearDisplay();
    display.setTextColor(WHITE, BLACK);
    display.setCursor(37, 0);
    display.print("MAIN MENU");
    display.drawFastHLine(0, 10, 127, WHITE);
    // First Window of the menu (First Window Concists of 6 pages or options)  [Main Menu]

    if (submenu == 0) // First Option [Main Menu Screen]
    {

      if (counter >= 0 && counter <= 2)
      { //[Highlight Set Pulse Menu]
        display.setTextSize(1);
        display.setCursor(0, 13);
        display.setTextColor(BLACK, WHITE);
        display.print("> Set Pulse");
        display.setCursor(0, 23);
        display.setTextColor(WHITE, BLACK);
        display.print("> Set Mode");
        display.setCursor(0, 33);
        display.print("> Set Low Volt");
        display.setCursor(0, 43);
        if (LV_Shutdown == false)
        {
          display.print("> L-V Shutdown: OFF");
        }
        else
        {
          display.print(F("> L-V Shutdown: ON"));
        }
        page = 1;
      }

      if (counter > 2 && counter <= 4)
      { //[Highlight Select Weldig Mode Menu]
        display.setTextSize(1);
        display.setCursor(0, 13);
        display.setTextColor(WHITE);
        display.print("> Set Pulse");
        display.setCursor(0, 23);
        display.setTextColor(BLACK, WHITE);
        display.print("> Set Mode");
        display.setTextColor(WHITE);
        display.setCursor(0, 33);
        display.print("> Set Low Volt");
        display.setCursor(0, 43);
        if (LV_Shutdown == false)
        {
          display.print("> L-V Shutdown: OFF");
        }
        else
        {
          display.print(F("> L-V Shutdown: ON"));
        }
        page = 2;
      }

      if (counter > 4 && counter <= 6)
      { //[Highlight Set Low VOlt Menu]
        display.setTextSize(1);
        display.setCursor(0, 13);
        display.setTextColor(WHITE);
        display.print("> Set Pulse");
        display.setCursor(0, 23);
        display.print("> Set Mode");
        display.setTextColor(BLACK, WHITE);
        display.setCursor(0, 33);
        display.print("> Set Low Volt");
        display.setTextColor(WHITE);
        display.setCursor(0, 43);
        if (LV_Shutdown == false)
        {
          display.print("> L-V Shutdown: OFF");
        }
        else
        {
          display.print(F("> L-V Shutdown: ON"));
        }
        page = 3;
      }

      if (counter > 6 && counter <= 8)
      { //[Highlight Low Voltage Shutdown Menu]
        display.setTextSize(1);
        display.setCursor(0, 13);
        display.setTextColor(WHITE);
        display.print("> Set Pulse");
        display.setCursor(0, 23);
        display.print("> Set Mode");
        display.setCursor(0, 33);
        display.print("> Set Low Volt");
        display.setTextColor(BLACK, WHITE);
        display.setCursor(0, 43);
        if (LV_Shutdown == false)
        {
          display.print("> L-V Shutdown: OFF");
        }
        else
        {
          display.print(F("> L-V Shutdown: ON"));
        }
        page = 4;
      }

      if (counter > 8 && counter <= 10)
      { //[Highlight About Menu]
        display.setTextSize(1);
        display.setTextColor(WHITE, BLACK);
        display.setCursor(0, 13);
        display.print("> Set Mode");
        display.setCursor(0, 23);
        display.print("> Set Low Volt");
        display.setCursor(0, 33);
        if (LV_Shutdown == false)
        {
          display.print("> L-V Shutdown: OFF");
        }
        else
        {
          display.print(F("> L-V Shutdown: ON"));
        }
        display.setTextColor(BLACK, WHITE);
        display.setCursor(0, 43);
        display.print("> About");
        page = 5;
      }

      if (counter > 10)
      { //[Highlight Back Menu]
        display.setTextSize(1);
        display.setTextColor(WHITE, BLACK);
        display.setCursor(0, 13);
        display.print("> Set Low Volt");
        display.setCursor(0, 23);
        if (LV_Shutdown == false)
        {
          display.print("> L-V Shutdown: OFF");
        }
        else
        {
          display.print(F("> L-V Shutdown: ON"));
        }
        display.setCursor(0, 33);
        display.print("> About");
        display.setCursor(0, 43);
        display.setTextColor(BLACK, WHITE);
        display.print("> Back");
        page = 6;
      }

      display.display();
    } // End Submenu=1 [Main Menu]

    //**********************************************************************************/

    if (submenu == 1) //[Sub-Option Folder for SET PULSE]
    {
      display.setTextSize(1);
      display.clearDisplay();

      if (counter >= 0 && counter <= 2) //[First option of Set Pulse]
      {
        display.setCursor(0, 0);
        display.setTextColor(BLACK, WHITE);
        display.print("> 1 Pulse");
        display.setCursor(0, 10);
        display.setTextColor(WHITE, BLACK);
        display.print("> 2 Pulses");
        display.setCursor(0, 20);
        display.print("> 3 Pulses");
        display.setCursor(0, 30);
        display.print("> 4 Pulses");
        page = 1;
      }

      if (counter > 2 && counter <= 4) //[Second option of Set Pulse]
      {
        display.setCursor(0, 0);
        display.setTextColor(WHITE, BLACK);
        display.print("> 1 Pulse");
        display.setCursor(0, 10);
        display.setTextColor(BLACK, WHITE);
        display.print("> 2 Pulses");
        display.setTextColor(WHITE, BLACK);
        display.setCursor(0, 20);
        display.print("> 3 Pulses");
        display.setCursor(0, 30);
        display.print("> 4 Pulses");
        page = 2;
      }

      if (counter > 4 && counter <= 6) //[Third option of Set Pulse]
      {
        display.setCursor(0, 0);
        display.setTextColor(WHITE, BLACK);
        display.print("> 1 Pulse");
        display.setCursor(0, 10);
        display.print("> 2 Pulses");
        display.setTextColor(BLACK, WHITE);
        display.setCursor(0, 20);
        display.print("> 3 Pulses");
        display.setTextColor(WHITE, BLACK);
        display.setCursor(0, 30);
        display.print("> 4 Pulses");
        page = 3;
      }

      if (counter > 6) //[Forth option of Set Pulse]
      {
        display.setCursor(0, 0);
        display.setTextColor(WHITE, BLACK);
        display.print("> 1 Pulse");
        display.setCursor(0, 10);
        display.print("> 2 Pulses");
        display.setCursor(0, 20);
        display.print("> 3 Pulses");
        display.setTextColor(BLACK, WHITE);
        display.setCursor(0, 30);
        display.print("> 4 Pulses");
        page = 4;
      }
    }

    //**********************************************************************************/

    if (submenu == 2) //[Sub-Option Folder for Set Mode]
    {

      // Draw Set Weld Mode on top section of the display.
      display.setTextSize(1);
      display.clearDisplay();
      display.setTextColor(WHITE, BLACK);
      display.setCursor(25, 0); //[Center Aligned]
      display.print("Set Weld Mode");
      display.drawFastHLine(0, 10, 127, WHITE);

      if (counter >= 0 && counter <= 2) //[First option of Set Mode]
      {
        display.setCursor(0, 14);
        display.setTextColor(BLACK, WHITE);
        display.print("1. Batt Weld");
        display.setCursor(0, 24);
        display.setTextColor(WHITE, BLACK);
        display.print("2. Ext Relay");
        display.setCursor(0, 34);
        display.print("3. Ac Switch");
        page = 1;
      }

      if (counter > 2 && counter <= 4) //[Second option of Set Mode]
      {
        display.setCursor(0, 14);
        display.setTextColor(WHITE, BLACK);
        display.print("1. Batt Weld");
        display.setCursor(0, 24);
        display.setTextColor(BLACK, WHITE);
        display.print("2. Ext Relay");
        display.setCursor(0, 34);
        display.setTextColor(WHITE, BLACK);
        display.print("3. Ac Switch");
        page = 2;
        //   okay=false;
      }

      if (counter > 4) //[Third option of Set Mode]
      {
        display.setCursor(0, 14);
        display.setTextColor(WHITE, BLACK);
        display.print("1. Batt Weld");
        display.setCursor(0, 24);
        display.print("2. Ext Relay");
        display.setCursor(0, 34);
        display.setTextColor(BLACK, WHITE);
        display.print("3. Ac Switch");
        page = 3;
        //   okay=false;
      }
    } // End Submenu = 2

    //**********************************************************************************/

    if (submenu == 3) //[Sub-Option Folder for Low Voltage]
    {
      submenu = 0;
      counter = Alm_Volt * 10; // Sync rotary with previously set value
      bool n = false;
      pushState = LOW;

      while (true)
      { // run this loop for infinity untill the push button is pressed.

        display.setTextSize(1);
        display.clearDisplay();
        display.setTextColor(WHITE, BLACK);
        display.setCursor(31, 0);
        display.print("Set Low V");
        display.drawFastHLine(0, 10, 127, WHITE);

        Alm_Volt = map(counter, 0, 200, 0, 2000);
        Alm_Volt = Alm_Volt / 100;

        display.setTextSize(2);

        display.setCursor(0, 20);
        display.print("Volt:");
        display.println(Alm_Volt);

        if (digitalRead(push) == LOW)
        { //[Read if button is pressed]
          if (pushState != LOW)
          {
            n = true; // Break while loop.
          }
          pushState = LOW;
        }
        else
        {
          pushState = HIGH;
          n = false;
        }
        if (n == true)
        { // If button is pressed, end while loop.
          counter = 6;
          break;
        }

        display.display();
        delay(100);
      }
    } // End submenu=3

    //**********************************************************************************/

    if (submenu == 4)
    { //[Toggle Low Voltage Shutdown]
      okay = false;
      LV_Shutdown = !LV_Shutdown; // Inverse the Shutdown State.
      submenu = 0;
      counter = 8;
      if (LV_Shutdown == false)
      {
        failsafe = false;
      }
    } // End Submenu

    //**********************************************************************************/

    if (submenu == 5) //[Sub-Option Folder for About]
    {
      display.fillScreen(BLACK);
      submenu = 0;
      counter = 10;
      okay = false;

      display.drawBitmap(0, 0, channel, 128, 64, WHITE);
      display.display();
      delay(5000);

    } // End submenu=5

    if (submenu == 6)
    {                         //[Sub-Option Folder for Back]
      counter = setpulsetime; // Reset Counter
      break;                  //[Exit the loop and go back to home Screen]
    }                         // End submenu=6;

    display.display();

    //*********************************************************************/
    // Actions for the menu and Submenu

    //*********************************************************************/
    // From Main menu to secondary menu.
    if (okay == true)
    { // [Action for Set Pulse Menu]
      if (submenu == 0)
      {
        if (page == 1)
        {
          submenu = 1;
          counter = 0;
          okay = false;
          delay(100);
        }

        if (page == 2)
        {
          submenu = 2;
          counter = 0;
          okay = false;
          delay(100);
        }

        if (page == 3) //[Set Alarm VOltage]
        {
          submenu = 3;
          // counter=0; //Because we use counter to set VOltage value.
          okay = false;
          delay(100);
        }

        if (page == 4)
        {
          submenu = 4;
          counter = 0;
          okay = false;
          delay(100);
        }

        if (page == 5)
        {
          submenu = 5;
          counter = 1;
          okay = false;
          delay(100);
        }

        if (page == 6)
        {
          submenu = 6;
          counter = 1;
          okay = false;
          delay(100);
        }
      }
    }

    if (okay == true)
    {
      if (submenu == 1)
      { //[Send User back to main menu]
        if (page == 1)
        {
          submenu = 0;
          counter = 1;
          okay = false;
          pulse = 1; //[1 Pulse Mode]
          delay(100);
        }
        if (page == 2)
        {
          submenu = 0;
          counter = 1;
          okay = false;
          pulse = 2; //[2 Pulse Mode]
        }
        if (page == 3)
        {
          submenu = 0;
          counter = 1;
          okay = false;
          pulse = 3; //[3 Pulse Mode]
          break;
        }
        if (page == 4)
        {
          submenu = 0;
          counter = 1;
          okay = false;
          pulse = 4; //[4 Pulse Mode]
        }
      }

      //*************************************************************************************/

      if (submenu == 2)
      { // [Action for Set Set Mode]
        if (page == 1)
        {
          submenu = 0;
          counter = 6;
          okay = false;
          WeldMode = 1; //[Batt Weld]
          delay(100);
        }
        if (page == 2)
        {
          submenu = 0; // Main Menu
          counter = 2;
          okay = false;
          WeldMode = 2; //[Ext.relay]
          delay(100);
        }
        if (page == 3)
        {
          submenu = 0; // Main Menu
          counter = 2;
          okay = false;
          WeldMode = 3; //[Ac Switch]
          delay(100);
        }
      }

      if (submenu == 5)
      { // [Action for About]
        if (page == 1)
        {
          submenu = 0;
          counter = 2;
          okay = false;
          delay(100);
        }
      }

    } // End of all the menus

  }            // End While loop
  save_data(); //[Save the Updated data to EEPROM]
} // End Settings Void.

//*************************************************************************************/
// Print Values to OLED on Home Screeen.

void printText()
{
  display.clearDisplay();

  display.drawLine(0, 10, 127, 10, WHITE);
  display.drawLine(0, 50, 127, 50, WHITE);
  display.setTextSize(1);
  display.setTextColor(WHITE, BLACK);
  display.setCursor(128 - 36, 0);
  display.print(voltage); //[Display Input Voltage]
  display.setCursor(127 - 6, 0);
  display.println("V");

  display.setCursor(0, 0);
  display.print("Mode: ");
  display.println(WeldMode); //[Display Weld Mode]

  if (failsafe == false)
  {                         // show pulse time if failsafe is deactivated.
    display.setTextSize(4); //[Display Pulse Time]
    display.setCursor(3, 16);
    display.println(setpulsetime);
    display.setTextSize(2);

    if (setpulsetime < 10)
    {
      display.setTextColor(WHITE, BLACK);
      display.setCursor(25, 28);
      display.println("ms");
    }
    else
    {
      display.setTextColor(WHITE, BLACK);
      display.setCursor(50, 28);
      display.println("ms");
    }

    display.drawRoundRect(85, 14, 43, 33, 5, WHITE); //[Display Pulse Quantity in Round Rectangle.]
    display.setTextSize(3);
    display.setTextColor(WHITE);
    display.setCursor(92, 19);
    display.print(pulse);
    display.setCursor(110, 28);
    display.setTextSize(2);
    display.print("P");
  }
  else
  {
    display.setCursor(10, 20);
    display.setTextSize(2);
    display.print("Batt Low!");
  }

  display.setCursor(5 + 20, 55); //[Display Set Low Voltage,]
  display.setTextSize(1);
  display.print("LV: ");
  display.print(Alm_Volt);
  display.print("V");

  display.drawRoundRect(65 + 20, 53, 16, 10, 3, WHITE); //[Indicator for Low Voltage Shutdown Enable/disable]
  if (LV_Shutdown == true)
  {
    //(x,y, length, bredth, Color)
    display.fillRect(65 + 4 + 20, 56, 16 - 8, 4, WHITE);
  }
  else
  {
    display.fillRect(65 + 4 + 20, 56, 16 - 8, 4, BLACK);
  }
  display.fillRect(105, 52, 22, 11, BLACK); // To supress Display Noise

  display.drawRoundRect(55, 0, 20, 8, 3, WHITE); //(x,y, length, bredth, radius, color)
  if (pulsetime == setpulsetime)
  {
    display.drawRect(55 + 4, 3, 20 - 8, 2, WHITE); //(x,y, length, bredth, Color)
  }
  else
  {
    display.drawRect(55 + 4, 3, 20 - 8, 2, BLACK);
  }
  display.display();
}

void low_voltage()
{
  while (a < 8)
  {
    display.clearDisplay();
    display.drawRoundRect(6, 20, 114, 24, 4, WHITE);
    display.setTextColor(WHITE, BLACK);
    display.setCursor(10, 25); //[Display Set Low Voltage,]
    display.setTextSize(2);
    display.print("Batt Low!");

    display.display();
    digitalWrite(buzzer, HIGH);
    delay(400);

    display.drawRoundRect(6, 20, 114, 24, 4, WHITE);
    display.setTextColor(BLACK, WHITE);
    display.setCursor(10, 25); //[Display Set Low Voltage,]
    display.setTextSize(2);
    display.print("Batt Low!");
    display.display();
    digitalWrite(buzzer, LOW);
    delay(200);
    a++;
  }
}

void save_data()
{ //[Save data to Eeprom if Changed]
  if (EEPROM.read(1) != pulsetime)
  {
    EEPROM.write(1, pulsetime);
  }
  if (EEPROM.read(2) != pulse)
  {
    EEPROM.write(2, pulse);
  }
  if (EEPROM.read(3) != WeldMode)
  {
    EEPROM.write(3, WeldMode);
  }
  if (EEPROM.read(4) != LV_Shutdown)
  {
    EEPROM.write(4, LV_Shutdown);
  }
  volt = Alm_Volt * 10;

  if (EEPROM.read(6) != volt)
  {
    EEPROM.write(6, volt);
  }

  /*
  if (Alm_Volt != EEPROM_readAnything(6, Alm_Volt)){
   EEPROM_writeAnything(6, Alm_Volt);
  }
  */
}
18

I have no idea why. You have not followed my suggestion. I don't see what you changed in your code.

Wait: I see a few changes in your code, like I suggested. But there are 50 other lines where you should make the same change. I can't believe that changing only these few lines of your code fixed the problem.

1 Like
19

I changed my code as you said. Now it works, thank you very much for your kind advice, I didn't understand the suggestion you gave earlier. That's why I did it wrong and said it not work

display.print(F("> L-V Shutdown: ON"));
20

No, I checked your code and you only changed a small part of the lines that could be changed. I guess you are very lucky that changing those lines was enough to get your code working. But you have still not understood my suggestion.