/*
  Software serial multple serial test

 Receives from the hardware serial, sends to software serial.
 Receives from software serial, sends to hardware serial.

 The circuit:
 * RX is digital pin 10 (connect to TX of other device)
 * TX is digital pin 11 (connect to RX of other device)

 Note:
 Not all pins on the Mega and Mega 2560 support change interrupts,
 so only the following can be used for RX:
 10, 11, 12, 13, 50, 51, 52, 53, 62, 63, 64, 65, 66, 67, 68, 69

 Not all pins on the Leonardo and Micro support change interrupts,
 so only the following can be used for RX:
 8, 9, 10, 11, 14 (MISO), 15 (SCK), 16 (MOSI).

 created back in the mists of time
 modified 25 May 2012
 by Tom Igoe
 based on Mikal Hart's example

 This example code is in the public domain.

 */
#include <SoftwareSerial.h>

const int ledPin =  PA7;// the number of the LED pin
const int buttonPin =  PA3;// the number of the button pin

SoftwareSerial mySerial(PA0, PA1); // RX, TX

void setup() {  

  // set the data rate for the SoftwareSerial port
  mySerial.begin(9600);

    // set the digital pin as output:
  pinMode(ledPin, OUTPUT);

    // set the digital pin as output:
  pinMode(buttonPin, INPUT);

}

void loop() { // run over and over
  if (mySerial.available()) {
   if (mySerial.read() == 'B')
   {
      digitalWrite(ledPin, HIGH);
      delay(1000);
      digitalWrite(ledPin, LOW);
      delay(1000);
      digitalWrite(ledPin, HIGH);
      delay(1000);
      digitalWrite(ledPin, LOW);
      delay(1000);
    }

    
  }
  if (digitalRead(buttonPin) == LOW)
  {
    mySerial.println("A");
    delay(2000);
  }

}