/* Plotter mit TFT ILI9341
  Modifikation von https://wokwi.com/arduino/projects/307567963154678338
*/
#include <Adafruit_ILI9341.h>

#define TFT_SCK    18
#define TFT_MOSI   23
#define TFT_MISO   19
#define TFT_CS     22
#define TFT_DC     21
#define TFT_RESET  17

Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);

#define WIDTH 320
#define HEIGHT 240

void setup(void) {
  Serial.begin(115200); Serial.println("Start Setup");
  tft.begin();
  tft.setRotation(2);
  tft.fillScreen(ILI9341_BLACK);
  //tft.drawLine( 0, 0, HEIGHT, WIDTH, ILI9341_GREEN);
  tft.drawLine( 0, 0, HEIGHT, 0, ILI9341_RED);
  tft.drawLine( 0, 0, 0, WIDTH, ILI9341_RED);
  pinMode(4,INPUT);
  unsigned long startzeit =  millis();
  for (int x = 0; x < WIDTH; x++) {
   //tft.drawPixel(sin(0.1 * x) * 40.0 + 90, x, ILI9341_YELLOW);
  }
  unsigned long endezeit =  millis();
  Serial.println(String(endezeit - startzeit) + " ms");
 
  analogWrite(5,512);
  int mw[WIDTH];
  startzeit =  millis();
  int tmp;
  for (int x = 0; x < WIDTH; x++) {
    if (x%20==0) {
      tmp = mw[x] = analogRead(4);
    } 
    // byte y = digitalRead(TFT_DC);
    // tft.drawPixel(HEIGHT-mw[x]*0.01-50, x, ILI9341_YELLOW);
    tft.drawPixel(tmp*0.01 + 150, x, ILI9341_YELLOW);
    tft.drawPixel(sin(x*0.1)*20+50, x, ILI9341_YELLOW);
    //Serial.println(mw[x]);
  }
  endezeit =  millis();
  Serial.println(String(endezeit - startzeit) + " ms");

  Serial.println("Ende Setup");
}

void loop() {}