adding code files

sketch_arduino_processing/sketch_arduino_processing.ino

+#include <SoftwareSerial.h>
+
+SoftwareSerial doraSerial(1, 4);
+
+void setup() {
+  doraSerial.begin(9600);
+}
+
+void loop() {
+ doraSerial.write("Hello Barca");
+ doraSerial.write("\n");
+ delay(10);
+}
+

sketch_arduino_processing_2.ino/sketch_arduino_processing_2/sketch_arduino_processing_2.ino

+#include <SoftwareSerial.h>
+
+SoftwareSerial doraSerial(8, 6);
+
+char val;
+int ledPin = 7;  
+
+void setup() {
+  
+pinMode(ledPin, OUTPUT);
+doraSerial.begin(9600);
+
+
+}
+
+void loop() {
+
+  
+  if (doraSerial.available()) 
+   {
+   int bytesSent = doraSerial.write("hello"); //send the string "hello" and return the length of the string.
+   }
+ 
+   delay(10);
+
+}

sketch_arduino_processing_3/sketch_arduino_processing_3.ino

+#include <SoftwareSerial.h>
+
+SoftwareSerial doraSerial(8, 4);
+
+char val; // Data received from the serial port
+int ledPin = 7; // Set the pin to digital I/O 13
+boolean ledState = LOW; //to toggle our LED
+
+void setup() 
+{
+  pinMode(ledPin, OUTPUT); // Set pin as OUTPUT
+  //initialize serial communications at a 9600 baud rate
+  doraSerial.begin(9600);
+  establishContact();  // send a byte to establish contact until receiver responds 
+}
+  
+
+void loop()
+{
+  if (doraSerial.available() > 0) { // If data is available to read,
+    val = doraSerial.read(); // read it and store it in val
+
+    if(val == '1') //if we get a 1
+    {
+       ledState = !ledState; //flip the ledState
+       digitalWrite(ledPin, ledState); 
+    }
+    delay(100);
+  } 
+    else {
+    doraSerial.println("Hello, Barca!"); //send back a hello world
+    delay(50);
+    }
+}
+
+void establishContact() {
+  while (doraSerial.available() <= 0) {
+  doraSerial.println("A");   // send a capital A
+  delay(300);
+  }
+}

sketch_arduino_processing_inter/sketch_arduino_processing_inter.ino

+#include <SoftwareSerial.h>
+
+SoftwareSerial doraSerial(8, 4);
+
+char val; // Data received from the serial port
+int ledPin = 7; 
+boolean ledState = LOW; 
+
+void setup() 
+{
+  pinMode(ledPin, OUTPUT); 
+  doraSerial.begin(9600);
+  establishContact();  // send a byte to establish contact until receiver responds 
+}
+  
+
+void loop()
+{
+  if (doraSerial.available() > 0) { // If data is available to read,
+    val = doraSerial.read(); // read it and store it in val
+
+    if(val == '1') //if we get a 1
+    {
+       ledState = !ledState; //flip the ledState
+       digitalWrite(ledPin, ledState); 
+    }
+    delay(100);
+  } 
+    else {
+    doraSerial.println("Hello, Barca!"); //send back a hello world
+    delay(50);
+    }
+}
+
+void establishContact() {
+  while (doraSerial.available() <= 0) {
+  doraSerial.println("A");   // send a capital A
+  delay(300);
+  }
+}