Problem in transmitting the with arduino mega 2560

Using Arduino Networking, Protocols, and Devices
#1

I am working was working with arduino leonardo and xbee s2c for transmitting the values and message.
I was successful in doing that.

Sender:
String a;
String b;
void setup()
{
Serial.begin(9600);
Serial1.begin(9600);
}

void loop()
{
a="HEllO";
b="YASH";

Serial1.print("At b: ");
Serial1.print(b);
Serial1.print("At a: ");
Serial1.print(a);
delay(400);

Serial.flush();
Serial1.flush();

}

Receiver:

String b;
String a;
void setup()
{
Serial.begin(9600);
Serial1.begin(9600);

}

void loop()
{

if (Serial.available())
{

a=Serial.readString();
Serial1.print("At a");
Serial1.println(a);

}
if (Serial1.available())
{

b= Serial1.readString();
Serial.print("At b");
Serial.println(b);

}

all worked perfectly fine.
But the problem arose when I changed from Arduino leonardo to Arduino mega2560

it doesnt send nor receives.

Can someone help me.

#2

Yashkhandelwal:
But the problem arose when I changed from Arduino leonardo to Arduino mega2560

What pins on the Mega is the XBee connected to?

...R

#3

XBEE MEGA

0-RX TO 19-RX1
1-TX TO 18-TX1
GND TO GND
5V TO 5V

#4

I don't have an XBee but I'm pretty sure the XBee Rx should connect to the Mega Tx and vice versa.

...R

#5

Serial.write() is not working with strings.
can you tell why?

#6

can you tell why?

There is no reason why it should. What write() is NOT doing is sending a String the way you expect. What that means is that your expectations are wrong. What do you think should be sent when you send a String OBJECT (NOT the string wrapped by a String object) in binary?

write() is for sending binary data. print() is for sending the data in ASCII. write() is (properly) NOT overloaded to deal with String objects. print() is.

#7

Your idea of changing the Rx and Tx doesn't work. It even stopped sending the integer values.

#8

What do you use for communication for one Arduino to another Arduino?

#9

Wire works for me.

#10

BUT I WANT WIRELESS COMMUNICATION.

#11

IrDA

#12