/*
   To load a custom firmware:

   1. Press "F1" inside the code editor
   2. Choose "Load HEX File and Start Simulation…"
   3. Select the desired bin/elf/uf2 file: an application compiled with the ESP-IDF,
      MicroPython firmware, etc.

   Enjoy!
*/

#define tx  13
#define out_tx 12

void setup() {
  Serial.begin(115200);
  Serial.println("Please view the instructions in the source code!");
  pinMode(13, INPUT);
  pinMode(out_tx, OUTPUT);
}

void loop() {
  if (digitalRead(tx)!= HIGH){
  digitalWrite(out_tx, HIGH);
  delay(200);
  digitalWrite(out_tx, LOW);
  delay(200);
  }
   Serial.println(tx);
}