Half black screen and half normal screen

[evilbelt]

i got a problem with my oled 128x32 half the screen the bottom half is working but the top part is just completely black and even with other codes it still wont work im using a arduino pro mini anyone could help please?

[b707]

You will be more likely to get help if you follow the recommendations in this tutorial:

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has been updated to reflect the use of the Discourse forum The tutorial How to get the best out of this forum has been updated to reflect the use of the Discourse forum. If you have any comments, feedback or suggestions for improvements for the instructions please post them here. Thank you.

[evilbelt]

Ok so heres the scheme diagram im not a professional at that lol
SCL - A4
SDA - A5
VCC - VCC
GND - GND

[evilbelt]

Heres my problem (Im using a 0.91" 128x32 pixel Oled )
only the bottom half is displaying and the top is just blank it shouldnt be like that

[evilbelt]

and heres the code im using ( i got it from here GitHub - Aplyard/Oled-Clicker: Clicker Counter for Arduino Nano )

/*
   This project is a clicker, using a small oled screen for displaying No of clicks.
   Using a single MX button you can click for counter++, hold for 3+ seconds for saving counter to EEPROM or hold 15+ seconds for EEPROM reset
   Board : Arduino Nano
   Oled : 0.91' Oled I2C 128x32 pixel (4pin)
   Lipo : 400mah 3,7v 1 cell
   Lipo Charger + Step Up 5v Module
   Wiring :
            A0 -> Lipo+                     reading battery life
            GND -> Lipo-                    reding battery life
            D2 -> Button+                   button for clicks
            D2 -> 10k Restistor -> GND      resistor for debounce
            Vin -> Charge Modude OUT+
            GND -> Charge Modure OUT-
            Charge Module BAT+ -> Lipo+
            Charge Module BAT- -> Lipo+
            Oled 5V -> Arduino 5V or Charge Module OUT+
            Oled GND -> GND or Charge Module OUT-
            Oled SDA -> A4
            Oled SCL -> A5
*/
#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <EEPROMex.h>

#define SCREEN_WIDTH 128   // OLED display width, in pixels
#define SCREEN_HEIGHT 32   // OLED display height, in pixels
#define OLED_RESET     4   // Reset pin # (or -1 if sharing Arduino reset pin)
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
#define NUMFLAKES     10   // Number of snowflakes in the animation example
#define LOGO_HEIGHT   32   // Set Oled screen boundries
#define LOGO_WIDTH    128  // Set Oled screen boundries

#define lipoPin A0         // Set A0 as the lipo Voltage read pin
float lipoV = 0;           // the variable for lipo Voltage readings

#define Battery_BMPWIDTH  14  //Bitmap for displaying Battery 75% - 100%
#define Battery_BMPHEIGHT  25
const unsigned char bitmap_BatteryFull[] PROGMEM = {
  B00000000, B00000000, // ................
  B00001111, B11000000, // ....######......
  B00001111, B11000000, // ....######......
  B01111111, B11111000, // .############...
  B01000000, B00001000, // .#..........#...
  B01011111, B11101000, // .#.########.#...
  B01011111, B11101000, // .#.########.#...
  B01011111, B11101000, // .#.########.#...
  B01011111, B11101000, // .#.########.#...
  B01011111, B11101000, // .#.########.#...
  B01000000, B00001000, // .#..........#...
  B01011111, B11101000, // .#.########.#...
  B01011111, B11101000, // .#.########.#...
  B01011111, B11101000, // .#.########.#...
  B01011111, B11101000, // .#.########.#...
  B01011111, B11101000, // .#.########.#...
  B01000000, B00001000, // .#..........#...
  B01011111, B11101000, // .#.########.#...
  B01011111, B11101000, // .#.########.#...
  B01011111, B11101000, // .#.########.#...
  B01011111, B11101000, // .#.########.#...
  B01011111, B11101000, // .#.########.#...
  B01000000, B00001000, // .#..........#...
  B01111111, B11111000, // .############...
  B00000000, B00000000 // ................
};

#define Battery_BMPWIDTH  14  //Bitmap for displaying Battery 50%
#define Battery_BMPHEIGHT  25
const unsigned char bitmap_BatteryMid[] PROGMEM = {
  B00000000, B00000000, // ................
  B00001111, B11000000, // ....######......
  B00001111, B11000000, // ....######......
  B01111111, B11111000, // .############...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01011111, B11101000, // .#.########.#...
  B01011111, B11101000, // .#.########.#...
  B01011111, B11101000, // .#.########.#...
  B01011111, B11101000, // .#.########.#...
  B01011111, B11101000, // .#.########.#...
  B01000000, B00001000, // .#..........#...
  B01011111, B11101000, // .#.########.#...
  B01011111, B11101000, // .#.########.#...
  B01011111, B11101000, // .#.########.#...
  B01011111, B11101000, // .#.########.#...
  B01011111, B11101000, // .#.########.#...
  B01000000, B00001000, // .#..........#...
  B01111111, B11111000, // .############...
  B00000000, B00000000 // ................
};

#define Battery_BMPWIDTH  14  //Bitmap for displaying Battery 25%
#define Battery_BMPHEIGHT  25
const unsigned char bitmap_BatteryLow[] PROGMEM = {
  B00000000, B00000000, // ................
  B00001111, B11000000, // ....######......
  B00001111, B11000000, // ....######......
  B01111111, B11111000, // .############...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01011111, B11101000, // .#.########.#...
  B01011111, B11101000, // .#.########.#...
  B01011111, B11101000, // .#.########.#...
  B01011111, B11101000, // .#.########.#...
  B01011111, B11101000, // .#.########.#...
  B01000000, B00001000, // .#..........#...
  B01111111, B11111000, // .############...
  B00000000, B00000000 // ................
};

#define Battery_BMPWIDTH  14  //Bitmap for displaying Battery 0%
#define Battery_BMPHEIGHT  25
const unsigned char bitmap_BatteryEmpty[] PROGMEM = {
  B00000000, B00000000, // ................
  B00001111, B11000000, // ....######......
  B00001111, B11000000, // ....######......
  B01111111, B11111000, // .############...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01000000, B00001000, // .#..........#...
  B01111111, B11111000, // .############...
  B00000000, B00000000 // ................
};

#define Battery_BMPWIDTH  84  //Bitmap for displaying Aplyard or place your logo Bitmap Here
#define Battery_BMPHEIGHT  32
const unsigned char bitmap_Aplyard[] PROGMEM = {
  B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000, // ........................................................................................
  B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000, // ........................................................................................
  B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000, // ........................................................................................
  B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000, // ........................................................................................
  B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000, // ........................................................................................
  B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000, // ........................................................................................
  B00000000,B00000000,B00000000,B00000000,B11000000,B00000000,B00000000,B00000000,B00000000,B00000100,B00000000, // ................................##...........................................#..........
  B00000001,B10000000,B00000000,B00000000,B11000000,B00000000,B00000000,B00000000,B00000000,B00000100,B00000000, // .......##.......................##...........................................#..........
  B00000001,B11000000,B00000000,B00000000,B11000000,B00000000,B00000000,B00000000,B00000000,B00000100,B00000000, // .......###......................##...........................................#..........
  B00000011,B11000000,B00000000,B00000000,B11000000,B00000000,B00000000,B00000000,B00000000,B00000100,B00000000, // ......####......................##...........................................#..........
  B00000011,B01100000,B00000000,B00000000,B11000000,B00000000,B00000000,B00000000,B00000000,B00000100,B00000000, // ......##.##.....................##...........................................#..........
  B00000110,B01100000,B00000000,B00000000,B11000000,B00000000,B00000000,B00000000,B00000000,B00000100,B00000000, // .....##..##.....................##...........................................#..........
  B00000110,B00110000,B00100111,B11000000,B11001100,B00000100,B00111110,B00000101,B11000011,B11100100,B00000000, // .....##...##......#..#####......##..##.......#....#####......#.###....#####..#..........
  B00000110,B00110000,B00111111,B11100000,B11001100,B00001100,B11111111,B00001111,B11000111,B11111100,B00000000, // .....##...##......#########.....##..##......##..########....######...#########..........
  B00001100,B00011000,B00111000,B00110000,B11000110,B00001100,B01000011,B10001110,B00001100,B00011100,B00000000, // ....##.....##.....###.....##....##...##.....##...#....###...###.....##.....###..........
  B00001100,B00011000,B00110000,B00011000,B11000110,B00011000,B00000001,B10001100,B00011000,B00001100,B00000000, // ....##.....##.....##.......##...##...##....##..........##...##.....##.......##..........
  B00011000,B00011000,B00100000,B00011000,B11000011,B00011000,B00000011,B10001100,B00011000,B00000100,B00000000, // ...##......##.....#........##...##....##...##.........###...##.....##........#..........
  B00011111,B11111100,B00100000,B00011000,B11000011,B00010000,B01111111,B10001100,B00011000,B00000100,B00000000, // ...###########....#........##...##....##...#.....########...##.....##........#..........
  B00111111,B11111100,B00100000,B00011000,B11000011,B00110000,B11100001,B10001100,B00011000,B00000100,B00000000, // ..############....#........##...##....##..##....###....##...##.....##........#..........
  B00110000,B00000110,B00110000,B00011000,B11000001,B10110000,B11000001,B10001100,B00011000,B00001100,B00000000, // ..##.........##...##.......##...##.....##.##....##.....##...##.....##.......##..........
  B00110000,B00000110,B00110000,B00011000,B11000001,B11100000,B11000001,B10001100,B00011000,B00001100,B00000000, // ..##.........##...##.......##...##.....####.....##.....##...##.....##.......##..........
  B01100000,B00000111,B00111100,B01110000,B11000000,B11100000,B11000011,B10001100,B00001110,B00111100,B00000000, // .##..........###..####...###....##......###.....##....###...##......###...####..........
  B01100000,B00000011,B00101111,B11100000,B11000000,B11000000,B01111101,B10001100,B00000111,B11110100,B00000000, // .##...........##..#.#######.....##......##.......#####.##...##.......#######.#..........
  B00000000,B00000000,B00100001,B00000000,B00000000,B11000000,B00010000,B00000000,B00000000,B10000000,B00000000, // ..................#....#................##.........#....................#...............
  B00000000,B00000000,B00100000,B00000000,B00000000,B11000000,B00000000,B00000000,B00000000,B00000000,B00000000, // ..................#.....................##..............................................
  B00000000,B00000000,B00100000,B00000000,B00000001,B10000000,B00000000,B00000000,B00000000,B00000000,B00000000, // ..................#....................##...............................................
  B00000000,B00000000,B00100000,B00000000,B00000001,B10000000,B00000000,B00000000,B00000000,B00000000,B00000000, // ..................#....................##...............................................
  B00000000,B00000000,B00100000,B00000000,B00001111,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000, // ..................#.................####................................................
  B00000000,B00000000,B00100000,B00000000,B00001110,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000, // ..................#.................###.................................................
  B00000000,B00000000,B00100000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000, // ..................#.....................................................................
  B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000, // ........................................................................................
  B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000  // ........................................................................................
};


const int  buttonPin = 2;           // the pin that the pushbutton is attached to
const int LONG_PRESS_TIME  = 3000;  // set the short press duration for save = 3s
const int RESET_PRESS_TIME = 10000; // set the long press duration for erase = 15s

long delayCounter = 0;        // temp counter for saving the counter when saving
long buttonPushCounter = 0;   // counter for the number of button presses
int buttonState = 0;          // current state of the button
int lastButtonState = 0;      // previous state of the button
int askPrevState = 0;
int askState = 0;

unsigned long pressedTime  = 0; // temp for saving the time ( milis() ) when button is pressed
unsigned long releasedTime = 0; // temp for saving the time ( milis() ) when button is released
unsigned long loopTime = 0;
unsigned long duration = 0;
unsigned long highTime = 0;
unsigned long askTime = 0;
unsigned long askPressedTime = 0;
unsigned long askReleasedTime = 0;
unsigned long askDuration = 0;
unsigned long askLoopTime = 0;
unsigned long lastTime = 0;

int bounds;             // varieble for Oled Screen Padding
int batteryPercentage;  // the voltage of the Lipo mapped in 0%, 25%, 50%, 75%, 100%

void setup() {
  buttonPushCounter = EEPROM.readLong(0);   // read the counter from the first address of the EEPROM (0)
  pinMode(lipoPin, INPUT);                  // set A0 as an INPUT pin
  pinMode(13, OUTPUT);                      // set 13 (on-board led) as an OUTPUT pin
  pinMode(buttonPin, HIGH);                 // set the initial state of the button pin (2) as HIGH
  Serial.begin(9600);                       // baud for serial monitor
  Serial.println(buttonPushCounter);        // print the counter for debuging

  if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Address 0x3C for 128x32
    Serial.println(F("SSD1306 allocation failed"));
    for (;;);                                       // Don't proceed, loop forever
  }
  display.clearDisplay();   // oled function for clearing display
  display.setTextColor(SSD1306_WHITE);              // set text to white
  display.setCursor(0,0);
  display.drawBitmap(30, 0, bitmap_Aplyard, 84, 32, WHITE);
  display.display();        // oled function to proceed on doing the previous commands
  delay(3000);               // small delay on startup
}

void loop() {

  //batteryPercentage = checkBattery(lipoPin , lipoV);      // call battery function to read A0 and return % value
  bounds = cursorbounds(buttonPushCounter);               // call bounds function to return the cursor value for Oled Screen padding
  //displayClicks(bounds, batteryPercentage, buttonState);  // call the display function to display Clicks and Battery on Oled Screen
  buttonState = digitalRead(buttonPin);                   // read the pushbutton input pin:
  loopTime = millis();

  while (buttonState == lastButtonState) {
    highTime = millis();
    delayCounter = (highTime - loopTime) / 1000;
    if (buttonState == HIGH && delayCounter >= 3 && delayCounter < 10) {
      delayCounter ++;
      Serial.println("Release For Save");
      displayReleaseForSave();
      delay(1000);
    }
    if (buttonState == HIGH && delayCounter >= 10) {
      delayCounter ++;
      Serial.println("Release For Erase");
      displayReleaseForErase();
      delay(1000);
    }
    else if (buttonState == LOW) {
      delayCounter = 3;
      batteryPercentage = checkBattery(lipoPin , lipoV);
      displayClicks(bounds, batteryPercentage, buttonState);
    }
    buttonState = digitalRead(buttonPin);

  }

  while (buttonState != lastButtonState) {                   // if state (HiGH) is different from last state (LOW)

    if (buttonState == HIGH) {          // if button is pressed
      pressedTime = millis();           // save the time when button is pressed
      Serial.println("HIGH");           //print for debuging

    }
    else if (buttonState == LOW) {                      // if the current state is LOW then the button went from on to off:
      releasedTime = millis();                          // save the release time
      long pressDuration = releasedTime - pressedTime;  // calculate press duration for long or short clicks
      Serial.println("LOW");                            //print Low for debuging

      if ( pressDuration < LONG_PRESS_TIME ) {          //if press duration < 3s (short click)
        buttonPushCounter++;              // click counter is increased by 1
        if (buttonPushCounter > 9999) {   // display is set for 4x digits so if counter > 9999 reset it to 0
          displayEnd();                   // call a function to display that you reached the end
          buttonPushCounter = 0;          // set counter to 0
        }
        //Serial.println("A short press is detected");
        Serial.print("Clicks: ");
        Serial.println(buttonPushCounter);
      }
      else if ( pressDuration >= LONG_PRESS_TIME && pressDuration < RESET_PRESS_TIME ) { // if press duration >= 3s then Save
        EEPROM.writeLong(0, buttonPushCounter);                                          // save the counter on EEPROM address (0)
        Serial.println("Saving Data...");
        Serial.print("Saved counter ");
        Serial.print(buttonPushCounter);
        Serial.println(" on address 0");
        displaySaved();                                                                  // call a function to display "saving"
      }
      else if (pressDuration >= RESET_PRESS_TIME) {        // if press duration >= 15s
              displayErased();                            // call a function to display "erased"
              EEPROM.writeLong(0, 0);                     // set address (0) of EEPROM to 0
              digitalWrite(13, HIGH);                     // onboard led flash because Reasons
              buttonPushCounter = 0;                      // set counter back to 0
              Serial.println("Data is erased");
      }
//        
//        askTime = millis();
//        lastButtonState = 0;
//        while(buttonState == lastButtonState){
//
//          askLoopTime = millis();
//          askDuration = (askLoopTime - askTime) /1000;
//          buttonState = digitalRead(buttonPin);  
//          
//          if(buttonState == HIGH ){
//            askDuration++;
//            delay(1000);
//            if (askDuration >= 3){
//          
//              Serial.println("2st");
//              displayErased();                            // call a function to display "erased"
//              EEPROM.writeLong(0, 0);                     // set address (0) of EEPROM to 0
//              digitalWrite(13, HIGH);                     // onboard led flash because Reasons
//              buttonPushCounter = 0;                      // set counter back to 0
//              Serial.println("Data is erased");
//              break;    
//             }
//          }
//          else if (buttonState == LOW){
//            Serial.println("3rd");
//            displayAsk();
//            askDuration = 0;            
//          }
//          //lastButtonState = buttonState;
//          
//          Serial.println(askDuration);
//          //Serial.println(askState);
//        }
//        
//        while(buttonState != lastButtonState){
//          buttonState = digitalRead(buttonPin);
//          if (buttonState == HIGH){
//             askPressedTime = millis();
//          }
//          else if (buttonState == LOW){
//            askReleasedTime = millis();
//            lastTime = (askReleasedTime - askPressedTime)/1000;
//            if(lastTime < 3){
//              displayCancel();
//              break;
//            }
//          }
//          lastButtonState = buttonState;
//        }
//==================================//
    }
    delay(50);                                      //small delay to avoid bouncing and ghosting, button is Cherry MX Mechanical Switch
    lastButtonState = buttonState;                  // loop the states of the button
  }
  buttonState = digitalRead(buttonPin);
  batteryPercentage = checkBattery(lipoPin , lipoV);
  displayClicks(bounds, batteryPercentage, buttonState);
}


void displayClicks(int width, int bat, int state) { // function to display clicks and battery image %
  display.clearDisplay();                           // clear display
  display.setTextSize(4);                           // Normal 1:1 pixel scale
  display.setTextColor(SSD1306_WHITE);              // set text to white
  display.setCursor(width, 2);                      // (0,0) is top-left corner, but i want the counter to be displayed sticked to the right
  if (bat == 100) {                                 // if state to display battery image
    display.drawBitmap(0, 5, bitmap_BatteryFull, 14, 25, WHITE);
    display.print(buttonPushCounter);
  }
  else if (bat == 75) {
    display.drawBitmap(0, 5, bitmap_BatteryFull, 14, 25, WHITE);
    display.print(buttonPushCounter);
  }
  else if (bat == 50) {
    display.drawBitmap(0, 5, bitmap_BatteryMid, 14, 25, WHITE);
    display.print(buttonPushCounter);
  }
  else if (bat == 25) {
    display.drawBitmap(0, 5, bitmap_BatteryLow, 14, 25, WHITE);
    display.print(buttonPushCounter);
  }
  else if (bat == 0) {                                // if battery percentage is 0, enter a loop showing that bat is low, until bat is high
    display.clearDisplay();
    display.setTextSize(1);
    display.setTextColor(SSD1306_WHITE);
    display.setCursor(36, 12);
    display.drawBitmap(0, 5, bitmap_BatteryEmpty, 14, 25, WHITE);
    display.println(F("Battery Low!"));
    display.display();
    delay(700);

    display.clearDisplay();
    display.setTextSize(1);
    display.setTextColor(SSD1306_WHITE);
    display.setCursor(36, 12);
    display.drawBitmap(0, 5, bitmap_BatteryEmpty, 14, 25, WHITE);
    display.println(F(" "));
    display.display();
    delay(700);
  }
  display.display();
}

int cursorbounds(int x) {   //function with counter as an input, return the width of the cursor padding for display
  int clength;
  //if (x > 9999) {
  //clength = 8;
  //}
  if (x > 999) {
    clength = 32;
  } else if (x > 99) {
    clength = 56;
  } else if (x > 9) {
    clength = 76;
  } else if (x < 10) {
    clength = 104 ;
  }
  return clength;
}

void displaySaved() {                 // display Saving... (only for asthetics)
  for (int i = 0; i < 2; i++) {
    display.clearDisplay();
    display.setTextSize(1);
    display.setTextColor(SSD1306_WHITE);
    display.setCursor(28, 12);
    display.println(F("Saving Data"));
    display.display();
    delay(300);

    display.clearDisplay();
    display.setTextSize(1);
    display.setTextColor(SSD1306_WHITE);
    display.setCursor(28, 12);
    display.println(F("Saving Data."));
    display.display();
    delay(300);

    display.clearDisplay();
    display.setTextSize(1);
    display.setTextColor(SSD1306_WHITE);
    display.setCursor(28, 12);
    display.println(F("Saving Data.."));
    display.display();
    delay(300);

    display.clearDisplay();
    display.setTextSize(1);
    display.setTextColor(SSD1306_WHITE);
    display.setCursor(28, 12);
    display.println(F("Saving Data..."));
    display.display();
    delay(300);
  }
  display.clearDisplay();
  display.setTextSize(1);
  display.setTextColor(SSD1306_WHITE);
  display.setCursor(32, 12);
  display.println(F("Data Saved!"));
  display.display();
  delay(1500);
}

void displayErased() {                    // display Erasing... (only for asthetics)
  for (int i = 0; i < 2; i++) {
    display.clearDisplay();
    display.setTextSize(1);
    display.setTextColor(SSD1306_WHITE);
    display.setCursor(24, 12);
    display.println(F("Erasing Data"));
    display.display();
    delay(300);

    display.clearDisplay();
    display.setTextSize(1);
    display.setTextColor(SSD1306_WHITE);
    display.setCursor(24, 12);
    display.println(F("Erasing Data."));
    display.display();
    delay(300);

    display.clearDisplay();
    display.setTextSize(1);
    display.setTextColor(SSD1306_WHITE);
    display.setCursor(24, 12);
    display.println(F("Erasing Data.."));
    display.display();
    delay(300);

    display.clearDisplay();
    display.setTextSize(1);
    display.setTextColor(SSD1306_WHITE);
    display.setCursor(24, 12);
    display.println(F("Erasing Data..."));
    display.display();
    delay(300);
  }
  display.clearDisplay();
  display.setTextSize(1);
  display.setTextColor(SSD1306_WHITE);
  display.setCursor(32, 12);
  display.println(F("Data Erased!"));
  display.display();
  delay(1500);
}

int checkBattery(int pin, float b) {          // funtion with pin A0 pin and Lipo V as input, maps and returns raw voltage reads to percentage
  int percentage;
  int voltage;
  b = analogRead(pin);
  //Serial.print("The A0 reads: ");
  //Serial.println(b);
  voltage = map(b, 600, 950, 30, 42);
  if (voltage >= 40) {
    percentage = 100;
  }
  else if (voltage > 38 && voltage < 40) {
    percentage = 75;
  }
  else if (voltage > 34 && voltage <= 38) {
    percentage = 50;
  }
  else if (b > 30 && voltage <= 34) {
    percentage = 25;
  }
  else if (voltage <= 30) {
    percentage = 0;
  }
  return percentage;
}

int displayReleaseForSave() {
  display.clearDisplay();
  display.setTextSize(1);      // Normal 1:1 pixel scale
  display.setTextColor(SSD1306_WHITE); // Draw white text
  display.setCursor(18, 12);     // Start at top-left corner
  display.print(F("Release for Save!"));
  display.display();
}

int displayReleaseForErase() {
  display.clearDisplay();
  display.setTextSize(1);      // Normal 1:1 pixel scale
  display.setTextColor(SSD1306_WHITE); // Draw white text
  display.setCursor(18, 12);     // Start at top-left corner
  display.print(F("Release for Erase!"));
  display.display();
}

void displayEnd() {                     //function to display "The end" (only for Asthetics)
  for (int i = 0; i < 4; i++) {
    display.clearDisplay();
    display.setTextSize(1);
    display.setTextColor(SSD1306_WHITE);
    display.setCursor(30, 12);
    display.println(F("* The End *"));
    display.display();
    delay(700);

    display.clearDisplay();
    display.setTextSize(1);
    display.setTextColor(SSD1306_WHITE);
    display.setCursor(30, 12);
    display.println(F("  The End  "));
    display.display();
    delay(700);
  }
}

int displayAsk() {
  display.clearDisplay();
  display.setTextSize(1);      // Normal 1:1 pixel scale
  display.setTextColor(SSD1306_WHITE); // Draw white text
  display.setCursor(8, 6);     // Start at top-left corner
  display.println(F("  Erase all Data?"));
  display.println(F("  "));
  display.println(F("No: Click   Yes: Hold"));
  display.display();
}

int displayCancel() {
  display.clearDisplay();
  display.setTextSize(1);      // Normal 1:1 pixel scale
  display.setTextColor(SSD1306_WHITE); // Draw white text
  display.setCursor(10, 12);     // Start at top-left corner
  display.println(F("Canceling"));
  display.display();
  delay(1500);
}

[david_2018]

Do you still get the 1/2 screen black if you run the Adafruit example code?
Has the display ever worked properly? If it is a new display could be defective hardware.

The compiler shows several problems in the code.
You have redefined BATTERY_BPMWIDTH and BATTERY_BPMHEIGHT several times.
There are several functions that return a value, but have no return statement.

[david_2018]

Displays properly here, I would suspect a hardware problem with the display itself.

[evilbelt]

Yes i got that display not long ago abt 3 weeks ago for my bday it worked but then after not using it for idk like a week or less it just displayed half the screen ill try the adafruit example code i will reply after the testing

[evilbelt]

yes even with adafruit its still displaying the bottom half