//Panos Papazoglou
//Microdev.gr 2023
#include <Adafruit_GFX.h>    
#include <Adafruit_ST7735.h> 
#include <SPI.h>

#define TFT_CS     10
#define TFT_RST    9  
#define TFT_DC     8

#define BLACK   0x0000
#define RED     0x001F
#define BLUE    0xF800
#define GREEN   0x07E0
#define YELLOW  0x07FF
#define PURPLE  0xF81F
#define CYAN    0xFFE0  
#define WHITE   0xFFFF

int color[]={RED, BLUE, GREEN, YELLOW, PURPLE, CYAN, WHITE};
Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS,  TFT_DC, TFT_RST);




void setup(void) {
  tft.initR(INITR_144GREENTAB);   
  tft.fillScreen(BLACK);
}

void loop()
{
for(int i=1;i<=50;i+=3)
{
  randomSeed(analogRead(0));
  int r=random(8);
  Serial.println(r);
  tft.drawCircle(63,63,i,color[r]);
}
tft.setTextColor(YELLOW);
tft.setTextSize(1);
tft.fillRect(18, 50, 90, 30, BLUE);
tft.setCursor(28,60);
tft.println("MICRODEV.GR");

delay(2000);
tft.fillScreen(BLACK);
delay(500);
}