/*
  Fingerprint - generating a complex graphics pattern with little code.

  Try changing line 27 and experimenting with the patterns, e.g.:
  tft.drawPixel(x, y, (x + y) * sin(x * y));

  https://wokwi.com/arduino/projects/307567963154678338
*/

#include <Adafruit_ILI9341.h>

#define TFT_CS   9
#define TFT_DC   10
#define WIDTH 320
#define HEIGHT 240

int LOOP_PERIOD = 1000; // Display updates every 35 ms
unsigned long time_now = 0;

Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);

void setup(void) {
  tft.begin();
  tft.fillScreen(ILI9341_BLACK);
  tft.setTextColor(ILI9341_RED);
  tft.println("cock");
  tft.setRotation(1);
  pinMode(A3, INPUT);
}

void loop() {
  time_now = millis();
  int value = analogRead(A3);
  tft.setCursor(50,50);
  tft.setTextColor(ILI9341_GREEN);
  tft.println(value);
  //Serial.println(value);

  while(millis() < time_now + LOOP_PERIOD){
    //waits?
  }
  tft.setCursor(50,50);
  tft.setTextColor(ILI9341_BLACK);
  tft.println(value);
 }