/* 

DISPLAY CONNECTION TEST

Schema:
Display VCC to 5V pin on Nano
Display GND to GND pin on Nano
Display SCL to A5 on Nano
Display SDA to A4 on Nano

BAUD RATE: 115200

*/


#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

// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
#define OLED_RESET     4 // Reset pin # (or -1 if sharing Arduino reset pin)
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

void show() { // Often used sequence - Function to simplify code
  display.display(); delay(2000); display.fillScreen(SSD1306_BLACK);
}
void setup() {
  Serial.begin(115200); while (!Serial);
  Serial.println(F("**** Starting SSD 1306 Display Connection Test"));
  // SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Old Address 0x3D for 128x64
    Serial.println(F("SSD1306 allocation failed"));
    for(;;); // Don't proceed, loop forever
  }
  
  int cw = SSD1306_WHITE; // colour white
  
  display.clearDisplay();
  display.setTextSize(1);             // Normal 1:1 pixel scale
  display.setTextColor(cw);
  display.setCursor(0,0);
  display.println("Channel Proc. Tests");
  display.println("Executing Test #\n");
  display.setTextSize(5); 
  display.println("8");
  
   display.display();
  
}
void loop() {
  // put your main code here, to run repeatedly:
}