#include <U8x8lib.h>
#include <U8g2lib.h>

/*
 * Basic test a Nokia 5110 display and the U8g2 library.
 *
 * Notes:
 * Program storage space and dynamic memory are the same whether you use HW or SW SPI.
 * With u8g_font_profont11, it uses 29% of program storage space and 24% of dynamic memory.
 * With u8g2_font_profont11_tr, it uses 25% of program storage space and 24% of dynamic memory.
 * With u8g2_font_fur30_tr, it uses 35% of program storage space and 24% of dynamic memory.
 */

/*
 * Pin assignments:
 * RST: 8
 * CE/CS/SCE: 10
 * DC/"D/C": 9
 * DIN/DN/MOSI/DATA: 11
 * CLK/SCLK/SCK: 13
 * VCC: 3.3V
 * LIGHT/LED: ground through 330 ohm resistor
 * GND: ground
 */

const unsigned int CLOCK_PIN = 13,
                   DATA_PIN = 11,
                   CS_PIN = 10,
                   DC_PIN = 9,
                   RESET_PIN = 8;

//U8G2_PCD8544_84X48_1_4W_SW_SPI u8g2 = U8G2_PCD8544_84X48_1_4W_SW_SPI(U8G2_R0, CLOCK_PIN, DATA_PIN, CS_PIN, DC_PIN, RESET_PIN);  // SW SPI
U8G2_PCD8544_84X48_1_4W_HW_SPI u8g2 = U8G2_PCD8544_84X48_1_4W_HW_SPI(U8G2_R0, CS_PIN, DC_PIN, RESET_PIN);                       // HW SPI

void setup() {
  u8g2.begin();
  u8g2.setContrast(135);
}

void loop() {
  u8g2.firstPage();
  do {
    // u8g2.setFont(u8g_font_profont11);  // set a font
    u8g2.setFont(u8g2_font_profont11_tr);
    // u8g2.setFont(u8g2_font_fur30_tr);
    u8g2.drawStr(0, 15, "Nokia 5110");  // write a string at position X, Y
    u8g2.drawStr(0, 35, "Hello World!");
  } while ( u8g2.nextPage() );
}