Erkan Göcen
Published

Displaying Eyes and Gauges on Ardunio w/RP2040 and GC9a01

RP2040-2x GC9A01 Display on Shared SPI Displaying Bitmap EYES and Drawing Eyes Drawing Gauges Using Multilanguage and symbol fonts

BeginnerFull instructions provided1 hour340
Displaying Eyes and Gauges on Ardunio w/RP2040 and GC9a01

Things used in this project

Hardware components

rp2040-zero
×1
gc9a01 round display
×1

Software apps and online services

Arduino IDE
Arduino IDE

Story

Read more

Schematics

Connecting rp2040-zero and GC9A01

Code

sample code

Arduino
/*******************************************************************************
 * Start of Arduino_GFX setting
 *
 * Arduino_GFX try to find the settings depends on selected board in Arduino IDE
 * Or you can define the display dev kit not in the board list
 * Defalult pin list for non display dev kit:
 * Arduino Nano, Micro and more: CS:  9, DC:  8, RST:  7, BL:  6, SCK: 13, MOSI: 11, MISO: 12
 * ESP32 various dev board     : CS:  5, DC: 27, RST: 33, BL: 22, SCK: 18, MOSI: 23, MISO: nil
 * ESP32-C3 various dev board  : CS:  7, DC:  2, RST:  1, BL:  3, SCK:  4, MOSI:  6, MISO: nil
 * ESP32-S2 various dev board  : CS: 34, DC: 38, RST: 33, BL: 21, SCK: 36, MOSI: 35, MISO: nil
 * ESP32-S3 various dev board  : CS: 40, DC: 41, RST: 42, BL: 48, SCK: 36, MOSI: 35, MISO: nil
 * ESP8266 various dev board   : CS: 15, DC:  4, RST:  2, BL:  5, SCK: 14, MOSI: 13, MISO: 12
 * Raspberry Pi Pico dev board : CS: 17, DC: 27, RST: 26, BL: 28, SCK: 18, MOSI: 19, MISO: 16
 * RTL8720 BW16 old patch core : CS: 18, DC: 17, RST:  2, BL: 23, SCK: 19, MOSI: 21, MISO: 20
 * RTL8720_BW16 Official core  : CS:  9, DC:  8, RST:  6, BL:  3, SCK: 10, MOSI: 12, MISO: 11
 * RTL8722 dev board           : CS: 18, DC: 17, RST: 22, BL: 23, SCK: 13, MOSI: 11, MISO: 12
 * RTL8722_mini dev board      : CS: 12, DC: 14, RST: 15, BL: 13, SCK: 11, MOSI:  9, MISO: 10
 * Seeeduino XIAO dev board    : CS:  3, DC:  2, RST:  1, BL:  0, SCK:  8, MOSI: 10, MISO:  9
 * Teensy 4.1 dev board        : CS: 39, DC: 41, RST: 40, BL: 22, SCK: 13, MOSI: 11, MISO: 12
 ******************************************************************************/
#include <Arduino_GFX_Library.h>
#include <Arduino.h>
#include "hardware/adc.h"


Arduino_DataBus *bus = new Arduino_RPiPicoSPI(8 /* DC */, 9 /* CS */, 10 /* SCK */, 11 /* MOSI */, 12 /* MISO */, spi1 /* spi */);
Arduino_GFX *gfx = new Arduino_GC9A01(bus, 28 /* RST */, 0 /* rotation */, true /* IPS */, 240 /* width */, 240 /* height */);

// kinci ekran tanmlamalar
Arduino_DataBus *bus2 = new Arduino_RPiPicoSPI(12 /* DC */, 14 /* CS */, 10 /* SCK */, 11 /* MOSI */, 17 /* MISO */, spi1 /* spi */);
Arduino_GFX *gfx2 = new Arduino_GC9A01(bus2, 29 /* RST */, 0 /* rotation */, true /* IPS */, 240 /* width */, 240 /* height */);

/* More dev device declaration: https://github.com/moononournation/Arduino_GFX/wiki/Dev-Device-Declaration */

/*******************************************************************************
 * End of Arduino_GFX setting
 ******************************************************************************/

void setup(void)
{
#ifdef DEV_DEVICE_INIT
  DEV_DEVICE_INIT();
#endif



  // Init Display
  if (!gfx->begin())
  {
    Serial.println("gfx->begin() failed!");
  }
  if (!gfx2->begin())
  {
    Serial.println("gfx2->begin() failed!");
  }
  gfx->fillScreen(RGB565_BLACK);
  gfx2->fillScreen(RGB565_BLACK);

                                                                                                                                                                                                                                                                                                 #ifdef GFX_BL
  pinMode(GFX_BL, OUTPUT);
  digitalWrite(GFX_BL, HIGH);
#endif

  gfx->setCursor(20, 20);
  gfx->setTextColor(RGB565_BLACK);
  gfx->println("Hello World!");



gfx2->setCursor(25, 25);
gfx2->setTextColor(RGB565_BLACK);
gfx2->println("Merhaba Dunya!");
  delay(5000); // 5 seconds
}

void loop()
{
  gfx->setCursor(random(gfx->width()), random(gfx->height()));
  gfx->setTextColor(random(0xffff), random(0xffff));
  gfx->setTextSize(random(6) /* x scale */, random(6) /* y scale */, random(2) /* pixel_margin */);
  gfx->println("Helloo!");


  gfx2->setCursor(random(gfx2->width()), random(gfx2->height()));
  gfx2->setTextColor(random(0xffff), random(0xffff));
  gfx2->setTextSize(random(6) /* x scale */, random(6) /* y scale */, random(2) /* pixel_margin */);
  gfx2->println("Merhaba!");

delay(2000);
}

Credits

Erkan Göcen
1 project • 0 followers
I am works as a computer specialist. As a hobby, he is interested in Arduino, PI and robotics.

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