oled.h

#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels
#define OLED_RESET     -1 // Reset pin # (or -1 if sharing Arduino reset pin)
#define SCREEN_ADDRESS 0x3C ///< See datasheet for Address; 0x3D for 128x64, 0x3C for 128x32
#define LOGO_HEIGHT   16
#define LOGO_WIDTH    16

uint8_t oled_buf[SCREEN_WIDTH * SCREEN_HEIGHT / 8];
const int ANALOG_INPUT_PIN = 37;
const int MIN_ANALOG_INPUT = 0;
const int MAX_ANALOG_INPUT = 1023;
const int DELAY_LOOP_MS = 5; // change to slow down how often to read and graph value

int _circularBuffer[SCREEN_WIDTH]; //fast way to store values
int _curWriteIndex = 0; // tracks where we are in the circular buffer

// for tracking fps
float _fps = 0;
unsigned long _frameCount = 0;
unsigned long _fpsStartTimeStamp = 0;

// status bar
boolean _drawStatusBar = true; // change to show/hide status bar
int _graphHeight = SCREEN_HEIGHT;






Adafruit_SSD1306 display_L(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
Adafruit_SSD1306 display_R(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);



// 'alert', 16x18px
const unsigned char epd_bitmap_alert [] PROGMEM = {
  0x01, 0x80, 0x02, 0x40, 0x02, 0x40, 0x04, 0x20, 0x04, 0x20, 0x08, 0x10, 0x19, 0x98, 0x11, 0x88,
  0x31, 0x8c, 0x21, 0x84, 0x60, 0x06, 0x41, 0x82, 0xc1, 0x83, 0x81, 0x81, 0x80, 0x01, 0x7f, 0xfe,
  0x00, 0x00, 0x00, 0x00
};
// 'sat_signal', 16x16px
const unsigned char epd_bitmap_sat_signal [] PROGMEM = {
  0x01, 0xe0, 0x07, 0x00, 0x0c, 0x00, 0x10, 0xe0, 0x23, 0x00, 0x64, 0x00, 0x48, 0xe0, 0xc9, 0x82,
  0x93, 0x06, 0x92, 0x0f, 0x92, 0x1f, 0x00, 0x3f, 0x00, 0x7f, 0x00, 0xfe, 0x01, 0xfc, 0x00, 0x78
};
// 'charging', 16x16px
const unsigned char epd_bitmap_charging [] PROGMEM = {
  0x00, 0x00, 0x00, 0x00, 0x20, 0x04, 0x40, 0x82, 0x51, 0x8a, 0x81, 0x81, 0xa2, 0x85, 0xa4, 0x25,
  0xa7, 0x45, 0xa1, 0x45, 0x81, 0x81, 0x53, 0x0a, 0x42, 0x02, 0x20, 0x04, 0x00, 0x00, 0x00, 0x00
};

// 'lightning', 10x16px
const unsigned char epd_bitmap_lightning [] PROGMEM = {
  0x04, 0x00, 0x04, 0x00, 0x0c, 0x00, 0x1c, 0x00, 0x1c, 0x00, 0x3c, 0x00, 0x7f, 0xc0, 0x7f, 0x80,
  0xff, 0x80, 0x0f, 0x00, 0x0e, 0x00, 0x0e, 0x00, 0x0c, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00
};

// 'signal', 16x16px
const unsigned char epd_bitmap_signal [] PROGMEM = {
  0x00, 0x00, 0x30, 0x0c, 0x20, 0x04, 0x48, 0x12, 0x50, 0x0b, 0x93, 0xc9, 0xb2, 0x4d, 0xb2, 0x4d,
  0x93, 0xc9, 0x91, 0x89, 0x49, 0x92, 0x41, 0x82, 0x21, 0x84, 0x01, 0x80, 0x01, 0x80, 0x00, 0x00
};

// 'clock', 16x16px
const unsigned char epd_bitmap_clock [] PROGMEM = {
  0x07, 0xe0, 0x1f, 0xf8, 0x38, 0x1c, 0x61, 0x86, 0x61, 0x86, 0xc1, 0x83, 0xc1, 0x83, 0xc1, 0x83,
  0xc1, 0xc3, 0xc0, 0xe3, 0xc0, 0x63, 0x60, 0x06, 0x60, 0x06, 0x38, 0x1c, 0x1f, 0xf8, 0x07, 0xe0
};





bool init_oled(){

	// SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
	if(!display_L.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) {
	  Serial.println(F("SSD1306 allocation failed"));
	  return false;
	}
  if(!display_R.begin(SSD1306_SWITCHCAPVCC, 0x3D)) {
    Serial.println(F("SSD1306 allocation failed"));
    return false;
  }
	return true;
}




void testdrawbitmap_L(const unsigned char* bmp, uint8_t col, uint8_t row,uint8_t logo_width, uint8_t logo_height) {


  display_L.drawBitmap(
    col,row,
    bmp, logo_width, logo_height, 1);

  // delay(1000);
}




void oled_clear(){
  display_L.clearDisplay();
  display_R.clearDisplay();
  display_L.setTextColor(SSD1306_WHITE); // Draw white text
  display_R.setTextColor(SSD1306_WHITE); // Draw white text

  // display_L.setCursor(0,0);
  // display_R.setCursor(0,0);

  // display_L.setTextSize(1);
  // display_R.setTextSize(1);

}
void oled_update(){
  display_L.display();
  display_R.display();


}