#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <Fonts/FreeSerif12pt7b.h>
#include <Fonts/FreeSerif9pt7b.h>
#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels

// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
#define OLED_RESET     -1  // Reset pin # (or -1 if sharing Arduino reset pin)
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire,OLED_RESET );



void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);

  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Address 0x3D for 128x64
    Serial.println(F("SSD1306 allocation failed"));
    for(;;);
  }
  delay(2000);
  display.clearDisplay();

}

void loop() {
  // put your main code here, to run repeatedly:
  
  print_percent("20%");
  display.setFont();

}

void print_charge(String text){
  display.setFont(&FreeSerif12pt7b);
  display.setTextColor(SSD1306_WHITE);
  display.setCursor(35,20); // (column, row)
  display.println(text);
  display.display();
}


void print_percent(String percent){
  display.setFont(&FreeSerif9pt7b);
  display.setTextColor(SSD1306_WHITE);
  display.setCursor(70,32); // (column, row)
  display.println(percent);
  display.display();
}