#ifdef U8X8_HAVE_HW_SPI
#include <SPI.h>
#endif
#ifdef U8X8_HAVE_HW_I2C
#include <Wire.h>
#endif

//U8G2_ST7920_128X64_1_HW_SPI(rotation, cs [, reset]) [page buffer, size = 128 bytes]
//U8G2_ST7920_128X64_2_HW_SPI(rotation, cs [, reset]) [page buffer, size = 256 bytes]
//U8G2_ST7920_128X64_F_HW_SPI(rotation, cs [, reset]) [full framebuffer, size = 1024 bytes]
U8G2_ST7920_128X64_2_HW_SPI u8g2(U8G2_R0, /* CS=*/ 10, /* reset=*/ 8);

void Display_Init(void) {
  u8g2.begin(); 
}

void Display_Task(void) {
  char text[10] = {0};
  
  u8g2.firstPage();
  do {
    u8g2.drawLine(0,15,128,15); // horizontale oben
    u8g2.drawLine(64,16,64,48); // senkrechte mitte
    u8g2.drawLine(0,49,128,49); // horizontale unten
    u8g2.setFont(u8g2_font_ncenB10_tf);
    u8g2.drawStr(1,12,process.title);
    u8g2.setFont(u8g2_font_ncenB14_tf);
    sprintf(text,"%3d C",round(process.temp));
    u8g2.drawStr(0,31,text);
    sprintf(text,"%3d C",round(oven_temp));
    u8g2.drawStr(0,47,text);
    sprintf(text,"%02d:%02d",process.timer / 60, process.timer % 60);
    u8g2.drawStr(66,31,text);
    sprintf(text,"%02d:%02d",process.countdown / 60, process.countdown % 60);
    u8g2.drawStr(66,47,text);
  } while ( u8g2.nextPage() );
}