Altimeter_Pressure_Display_SSD1306.ino

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

#define DCSBIOS_IRQ_SERIAL

#include <DcsBios.h>
#include <Servo.h>

#include "hg_font.h"

// If using software SPI (the default case):
#define OLED_MOSI   9
#define OLED_CLK   10
#define OLED_DC    11
#define OLED_CS    12
#define OLED_RESET 13
Adafruit_SSD1306 pressureDisplay(OLED_MOSI, OLED_CLK, OLED_DC, OLED_RESET, OLED_CS);


void drawDigit(unsigned int index, unsigned int offset, const unsigned char* bits) {
  unsigned int y_offset_lines = offset / 273;
   pressureDisplay.fillRect(15*index, 0, 16, 24, BLACK);
   pressureDisplay.drawXBitmap(15*index, 0, &bits[2*y_offset_lines], 16, 24, WHITE);
   pressureDisplay.display();   
}


DcsBios::IntegerBuffer altPressure0Buffer(0x1086, 0xffff, 0, NULL);
DcsBios::IntegerBuffer altPressure1Buffer(0x1088, 0xffff, 0, NULL);
DcsBios::IntegerBuffer altPressure2Buffer(0x108a, 0xffff, 0, NULL);
DcsBios::IntegerBuffer altPressure3Buffer(0x108c, 0xffff, 0, NULL);



void setup()   {                
  DcsBios::setup();
  
  // by default, we'll generate the high voltage from the 3.3v line internally! (neat!)
 pressureDisplay.begin(SSD1306_SWITCHCAPVCC);
 pressureDisplay.clearDisplay();
 pressureDisplay.setTextSize(3);
 pressureDisplay.setTextColor(WHITE);
 pressureDisplay.display();
 }


void loop() {
  DcsBios::loop();

  if (altPressure0Buffer.hasUpdatedData() || altPressure1Buffer.hasUpdatedData() || altPressure2Buffer.hasUpdatedData() || altPressure3Buffer.hasUpdatedData()) {
    drawDigit(3, altPressure0Buffer.getData(), hg_font);
    drawDigit(2, altPressure1Buffer.getData(), hg_font);
    drawDigit(1, altPressure2Buffer.getData(), hg_font);
    drawDigit(0, altPressure3Buffer.getData(), hg_font);
    pressureDisplay.display();
  }
}
  

hg_font.h

static const unsigned char hg_font[] PROGMEM = {
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf0, 0x03, 0xf8, 0x07, 0xfc, 0x0f,
   0x1c, 0x0e, 0x1e, 0x1e, 0x0e, 0x1c, 0x0e, 0x1c, 0x0e, 0x1c, 0x0e, 0x1c,
   0x0e, 0x1c, 0x0e, 0x1c, 0x0e, 0x1c, 0x1e, 0x1e, 0x1c, 0x0e, 0xfc, 0x0f,
   0xf8, 0x07, 0xf0, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc0, 0x01, 0xf0, 0x01, 0xf8, 0x01,
   0xdc, 0x01, 0xcc, 0x01, 0xc0, 0x01, 0xc0, 0x01, 0xc0, 0x01, 0xc0, 0x01,
   0xc0, 0x01, 0xc0, 0x01, 0xc0, 0x01, 0xc0, 0x01, 0xc0, 0x01, 0xfc, 0x0f,
   0xfc, 0x0f, 0xfc, 0x0f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf0, 0x03, 0xfc, 0x07, 0xfc, 0x0f,
   0x0c, 0x0f, 0x00, 0x0e, 0x00, 0x0e, 0x00, 0x0e, 0x00, 0x07, 0x80, 0x03,
   0x80, 0x03, 0xc0, 0x01, 0xe0, 0x00, 0x70, 0x00, 0x38, 0x00, 0xfc, 0x1f,
   0xfc, 0x1f, 0xfc, 0x1f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf0, 0x03, 0xfc, 0x07, 0xfc, 0x0f,
   0x0c, 0x0f, 0x00, 0x0e, 0x00, 0x0e, 0x00, 0x07, 0xf0, 0x07, 0xf0, 0x07,
   0xf0, 0x0f, 0x00, 0x1e, 0x00, 0x1c, 0x00, 0x1c, 0x0c, 0x1e, 0xfc, 0x0f,
   0xfc, 0x07, 0xf0, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x0f, 0x80, 0x0f, 0xc0, 0x0f,
   0xe0, 0x0f, 0xf0, 0x0e, 0x70, 0x0e, 0x38, 0x0e, 0x3c, 0x0e, 0x1c, 0x0e,
   0x0e, 0x0e, 0xfe, 0x3f, 0xfe, 0x3f, 0xfe, 0x3f, 0x00, 0x0e, 0x00, 0x0e,
   0x00, 0x0e, 0x00, 0x0e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x0f, 0xf8, 0x0f, 0xf8, 0x0f,
   0x38, 0x00, 0x38, 0x00, 0x38, 0x00, 0xf8, 0x03, 0xf8, 0x0f, 0xf8, 0x1f,
   0x00, 0x1e, 0x00, 0x1c, 0x00, 0x1c, 0x00, 0x1c, 0x0c, 0x1e, 0xfc, 0x0f,
   0xfc, 0x07, 0xf0, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, 0x07, 0xf0, 0x0f, 0xf8, 0x0f,
   0x3c, 0x08, 0x1c, 0x00, 0x0e, 0x00, 0xee, 0x07, 0xfe, 0x0f, 0xfe, 0x1f,
   0x1e, 0x1e, 0x0e, 0x1c, 0x0e, 0x1c, 0x0e, 0x1c, 0x1c, 0x1e, 0xfc, 0x0f,
   0xf8, 0x07, 0xf0, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0x1f, 0xfe, 0x1f, 0xfe, 0x1f,
   0x00, 0x1e, 0x00, 0x0f, 0x00, 0x0f, 0x80, 0x07, 0x80, 0x07, 0xc0, 0x03,
   0xc0, 0x03, 0xc0, 0x03, 0xe0, 0x01, 0xe0, 0x01, 0xf0, 0x00, 0xf0, 0x00,
   0x78, 0x00, 0x78, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf0, 0x07, 0xfc, 0x0f, 0xfe, 0x1f,
   0x1e, 0x1e, 0x0e, 0x1c, 0x0e, 0x1c, 0x3c, 0x0f, 0xf8, 0x07, 0xf0, 0x07,
   0xf8, 0x0f, 0x1c, 0x1e, 0x0e, 0x1c, 0x0e, 0x1c, 0x1e, 0x1e, 0xfe, 0x1f,
   0xfc, 0x0f, 0xf0, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf0, 0x03, 0xf8, 0x07, 0xfc, 0x0f,
   0x1e, 0x0e, 0x0e, 0x1c, 0x0e, 0x1c, 0x0e, 0x1c, 0x1e, 0x1e, 0xfe, 0x1f,
   0xfc, 0x1f, 0xf0, 0x1d, 0x00, 0x1c, 0x00, 0x0e, 0x04, 0x0f, 0xfc, 0x07,
   0xfc, 0x03, 0xf8, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf0, 0x03, 0xf8, 0x07, 0xfc, 0x0f,
   0x1c, 0x0e, 0x1e, 0x1e, 0x0e, 0x1c, 0x0e, 0x1c, 0x0e, 0x1c, 0x0e, 0x1c,
   0x0e, 0x1c, 0x0e, 0x1c, 0x0e, 0x1c, 0x1e, 0x1e, 0x1c, 0x0e, 0xfc, 0x0f,
   0xf8, 0x07, 0xf0, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };