#include <SPI.h>       // this is needed for display
#include <ArduinoTrace.h>

//This display 320 x 240 pixels; TTGO display 240 x 135
#include <TFT_eSPI.h>

TFT_eSPI tft = TFT_eSPI();

char command;

int ledState = LOW; // Initial LED state (off)
int ledState2 = LOW; // Initial LED state (off)
int ledState3 = LOW; // Initial LED state (off)

void setup(void) {
  Serial.begin(9600);        // Start serial communication at 9600 baud
  tft.init();
  tft.setRotation(1); // Adjust rotation if needed
  tft.fillScreen(TFT_BLACK);
  tft.drawCircle(60,67,20,TFT_RED);
  tft.drawCircle(120,67,20,TFT_GREEN);
  tft.drawCircle(180,67,20,TFT_BLUE);
}


void loop() {
 if (Serial.available() > 0) {
    command = Serial.read();
    if (command == 'T') {
      ledState = !ledState;   // Toggle LED state
      if(ledState==HIGH) tft.fillCircle(60,67,15,TFT_RED);
      else tft.fillCircle(60,67,15,TFT_BLACK);
    }
    if (command == 'S') {
      ledState2 = !ledState2;   // Toggle LED state
      if(ledState2==HIGH) tft.fillCircle(120,67,15,TFT_GREEN);
      else tft.fillCircle(120,67,15,TFT_BLACK);
    }
    if (command == 'L') {
      ledState3 = !ledState3;   // Toggle LED state
      if(ledState3==HIGH) tft.fillCircle(180,67,15,TFT_BLUE);
      else tft.fillCircle(180,67,15,TFT_BLACK);
    }




  } 
}