/* Program 4-6: Write "Hello world..." to the Serial1 port of Mega
 * 
 * Connect a 5V USB-TTL converter from the Mega to
 * the PC. Pin 19(PD3) of the Mega is TxD1 and should be connected
 * to the Rx of the USB-TTL converter. 
 * 
 * Use a terminal emulator such as Tera Term or Putty to see 
 * the output. See http://www.microdigitaled.com/tutorials/Tera_Terminal.pdf
 */

void setup() { 
    /* initialize serial1 and set the Baud rate to 9600 */
    Serial1.begin(9600); 
} 

void loop() {
    /* write "Hello world" to the Serial1 port */
    Serial1.print("Hello world... ");
    /* pause for a second then repeat */
    delay(1000);
}