//Original code davekw7x https://forum.seeedstudio.com/t/arduino-boards-manager/263531/6
//Modified by Adrian Torres 
//Fab Academy 2023 - Fab Lab León
//OLED
//Fab-Xiao

#include <U8g2lib.h> // In U8g2 library 

// Seeed Expansion board uses SSD1306
U8G2_SSD1306_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, /* reset= */ U8X8_PIN_NONE);

// My breadboard has an SH1106
//U8G2_SH1106_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);

void setup(void) {
  // Change #if 0 to #if 1 to print some stuff
  // If you do, it will wait until you open the Serial Monitor
#if 0
  Serial.begin(115200);
  while (!Serial) {}
  delay(100);
  Serial.println("\nOLED u8g2lib test compiled on " __DATE__ " at " __TIME__);
#endif
  u8g2.begin();
}

char printBuffer[30];
uint8_t passno;
void loop(void) {
  snprintf(printBuffer, sizeof(printBuffer), "%3d", ++passno);
  u8g2.clearBuffer();                   // clear the internal memory
  u8g2.setFont(u8g2_font_ncenB08_tr);   // choose a suitable font
  u8g2.drawStr(0, 10, "Hello World!");
  u8g2.drawStr(0, 25, "Fab Academy 2023");
  u8g2.drawStr(0, 40, "Fab-Xiao");
  u8g2.drawStr(0, 55, printBuffer);
  u8g2.sendBuffer();                    // transfer internal memory to the display
  delay(1000);
}