/***************************************************
//Web: http://www.buydisplay.com
EastRising Technology Co.,LTD
Examples for ER-OLEDM032-1
Display is Hardward SPI 4-Wire SPI Interface 
Tested and worked with:
Works with Arduino 2.3.4 IDE  
NOTE: test OK:ESP32-WROOM-32  
****************************************************/

/*
 Note:The module needs to be jumpered to an SPI interface. R19,R23 Short and R18,R20 Open  
 Unused signal pin Recommended to connect to GND
/*  == Hardward SPI to ESP32  ==
    OLED   =>    ESP32
  *1. GND    ->    GND
  *2. VCC    ->    3.3-5V
  *4. SCL    ->    18
  *5. SDI    ->    23
  *7-13      ->    GND
  *14. DC     ->    17
  *15. RES    ->    16  
  *16. CS     ->    5
*/


#include <SPI.h>
#include "er_oled.h"

//uint8_t oled_buf[OLED_Y_MAXPIXEL * OLED_X_MAXPIXEL/2];

void setup() {
  Serial.begin(9600);
  Serial.print("OLED Example\n");

  /* display an image of bitmap matrix */
  er_oled_begin();

  
}

void loop() {
  er_oled_clear();
  er_oled_bitmap_gray(PIC1);
  delay(3000);  

  er_oled_clear();
  er_oled_bitmap_gray(PIC2);
  delay(3000);
  
  er_oled_clear();
  er_oled_bitmap_mono(PIC3);
   delay(3000);

  er_oled_clear();
  er_oled_string(0, 0, "********************************",0);  
  er_oled_string(32, 16, "EastRising Technology",  0); 
  er_oled_string(40, 32, "www.buydisplay.com",  1); 
  er_oled_string(0, 48, "********************************",0); 
  uint8_t i;
  for(i=0;i<=48;i++)
  {
  command(0xa1); //start line
  data(i);
  delay(100);
  }
   for(i=48;i>0;i--)
  {
  command(0xa1); //start line
  data(i);
  delay(100);
  }
   command(0xa1); //start line
  data(0); 
}