Lesson 5 – RF UART code Example

RF UART code example

//This is the Code of Receiver and Transmitter RF (NANO transmit, UNO Receive)

//Arduino NANO transmitter side
//----------------------------------------------------------------------//
// Pin 13 has an LED connected on most Arduino boards.
int led = 13;
int num = 0;
String comdata = "";
void setup()
{
  // initialize the digital pin as an output.
  pinMode(led, OUTPUT);
  Serial.begin(9600);
  Serial.println("Hello, I am Arduino");
  Serial.println("HI number 1");
}
//Serial data transceiver
void loop()
{
  delay(1000);
  Serial.print("HI number ");
  Serial.println(num++);

  while (Serial.available() > 0)
  {
    digitalWrite(led, HIGH); // turn the LED on (HIGH is the voltage level)
    comdata += char(Serial.read());
    delay(2);
  }
  if (comdata.length() > 0)
  {
    Serial.println(comdata);
    comdata = "";
  }
  digitalWrite(led, LOW); // turn the LED off by making the voltage LOW

}
_____________________________________________________________________________________________________________
//UNO Receiver Side
//----------------------------------------------------------------------//
// Pin 13 has an LED connected on most Arduino boards.
int led = 13;
#include
String readString;
SoftwareSerial mySerial(10, 11); // RX, TX
void setup()
{
  // initialize the digital pin as an output.
  pinMode(led, OUTPUT);
  Serial.begin(9600); //computer PORT
  mySerial.begin(9600); // RF PORT
  //Serial.println("Hello, I am Arduino");
}
//Serial data transceiver
void loop()
{
  while (mySerial.available()) {
    delay(3); //delay to allow byte to arrive in input buffer
    char c = mySerial.read();
    readString += c;
  }

  if (readString.length() > 0) {
    Serial.println(readString);
    readString = "";
  }

  //digitalWrite(led, LOW); // turn the LED off by making the voltage LOW

}