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

#define SCREEN_WIDTH 128 // OLED 寬度像素
#define SCREEN_HEIGHT 64 // OLED 高度像素

// 設定OLED
#define OLED_RESET     4 // Reset pin # (or -1 if sharing Arduino reset pin)
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

//自訂圖形，從Image2LCD轉過來的，尺寸是128x48，少掉的16個像素是上方黃色區塊(假設是用藍黃雙色的OLED)
//本範例為了在上方區塊顯示文字，所以圖形就沒有涵蓋整個高度

static const unsigned char PROGMEM logo_bmp[] =
{ 
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};

void setup() {
  Serial.begin(9600);

  // 偵測是否安裝好OLED了
  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // 一般1306 OLED的位址都是0x3C
    Serial.println(F("SSD1306 allocation failed"));
    for(;;); // Don't proceed, loop forever
  }

  // 顯示Adafruit的LOGO，算是開機畫面
  display.display();
  delay(1000); // 停1秒

  // 清除畫面
  display.clearDisplay();

  testdrawstyles();    // 測試文字

  testdrawbitmap();    // 顯示圖形

}

void loop() {
}

void testdrawstyles(void) {
  display.clearDisplay();
  display.setTextSize(2);             // 設定文字大小
  display.setTextColor(1);        // 1:OLED預設的顏色(這個會依該OLED的顏色來決定)
  display.setCursor(0,0);             // 設定起始座標
  display.print("Hello OLED");        // 要顯示的字串
  display.display();                  // 要有這行才會把文字顯示出來
  delay(1000);
}

void testdrawbitmap(void) {
  //display.clearDisplay();
  //顯示圖形，x,y,圖形文字,寬,高,1:OLED預設的顏色(這個會依該OLED的顏色來決定)
  display.drawBitmap(0,16,logo_bmp, 128, 48, 1);
  display.display();  // 要有這行才會把文字顯示出來
  delay(1000);
}