Franz Pucher / ESP32

Hardwarenahe Programmierung

ESP32 SPI

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mbedEsp32S_LCD_SPI_mode1.ino

#include <Arduino.h>
#include <U8g2lib.h>
#include <stdio.h>

U8G2_ST7565_NHD_C12832_1_4W_HW_SPI u8g2(U8G2_R2, 5, 14, 13);   // U8G2_R2 is a rotation of 180° 

int lpCount = 0;
char buff[20] = {'x', ' ', '=', ' '};

void setup(void) {
  Serial.begin(115200);
  Serial.printf("\nsetup 1: %d\n", lpCount++);
  u8g2.begin();
  Serial.printf("setup 2: %d\n", lpCount++);
}

void loop(void) {
  Serial.printf("\n--> loop: %d", lpCount++);
  u8g2.firstPage();
  do {
    u8g2.setFont(u8g2_font_ncenB14_tr);
    u8g2.drawStr(0,24,"Hallo 4CHEL!");
  } while ( u8g2.nextPage() );
  delay(2000);
  
  u8g2.firstPage();
  sprintf(buff, "x = %d", lpCount%0xFFFF);
  do {
    u8g2.setFont(u8g2_font_ncenB14_tr);
    u8g2.drawStr(0, 24, buff);
  } while ( u8g2.nextPage() );
  delay(2000);
}
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