You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
81 lines
2.0 KiB
Arduino
81 lines
2.0 KiB
Arduino
2 years ago
|
/*
|
||
|
|
Chat Server
|
||
|
|
|
||
|
|
A simple server that distributes any incoming messages to all
|
||
|
|
connected clients. To use telnet to your device's IP address and type.
|
||
|
|
You can see the client's input in the serial monitor as well.
|
||
|
|
Using an Arduino Wiznet Ethernet shield.
|
||
|
|
|
||
|
|
Circuit:
|
||
|
|
* Ethernet shield attached to pins 10, 11, 12, 13
|
||
|
|
* Analog inputs attached to pins A0 through A5 (optional)
|
||
|
|
|
||
|
|
created 18 Dec 2009
|
||
|
|
by David A. Mellis
|
||
|
|
modified 9 Apr 2012
|
||
|
|
by Tom Igoe
|
||
|
|
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <SPI.h>
|
||
|
|
#include <Ethernet2.h>
|
||
|
|
|
||
|
|
// Enter a MAC address and IP address for your controller below.
|
||
|
|
// The IP address will be dependent on your local network.
|
||
|
|
// gateway and subnet are optional:
|
||
|
|
byte mac[] = {
|
||
|
|
0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED
|
||
|
|
};
|
||
|
|
IPAddress ip(192, 168, 1, 177);
|
||
|
|
IPAddress gateway(192, 168, 1, 1);
|
||
|
|
IPAddress subnet(255, 255, 0, 0);
|
||
|
|
|
||
|
|
|
||
|
|
// telnet defaults to port 23
|
||
|
|
EthernetServer server(23);
|
||
|
|
boolean alreadyConnected = false; // whether or not the client was connected previously
|
||
|
|
|
||
|
|
void setup() {
|
||
|
|
// initialize the ethernet device
|
||
|
|
Ethernet.begin(mac, ip, gateway, subnet);
|
||
|
|
// start listening for clients
|
||
|
|
server.begin();
|
||
|
|
// Open serial communications and wait for port to open:
|
||
|
|
Serial.begin(9600);
|
||
|
|
while (!Serial) {
|
||
|
|
; // wait for serial port to connect. Needed for Leonardo only
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
Serial.print("Chat server address:");
|
||
|
|
Serial.println(Ethernet.localIP());
|
||
|
|
}
|
||
|
|
|
||
|
|
void loop() {
|
||
|
|
// wait for a new client:
|
||
|
|
EthernetClient client = server.available();
|
||
|
|
|
||
|
|
// when the client sends the first byte, say hello:
|
||
|
|
if (client) {
|
||
|
|
if (!alreadyConnected) {
|
||
|
|
// clead out the input buffer:
|
||
|
|
client.flush();
|
||
|
|
Serial.println("We have a new client");
|
||
|
|
client.println("Hello, client!");
|
||
|
|
alreadyConnected = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (client.available() > 0) {
|
||
|
|
// read the bytes incoming from the client:
|
||
|
|
char thisChar = client.read();
|
||
|
|
// echo the bytes back to the client:
|
||
|
|
server.write(thisChar);
|
||
|
|
// echo the bytes to the server as well:
|
||
|
|
Serial.write(thisChar);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|