Arduino_STM32/STM32F1/libraries/Ethernet_STM/examples/DhcpChatServer/DhcpChatServer.ino

115 lines
3.1 KiB
C++

/*
DHCP 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.
THis version attempts to get an IP address using DHCP
Circuit:
* Ethernet shield attached to pins 10, 11, 12, 13
Based on ChatServer example by David A. Mellis
created 21 May 2011
modified 9 Apr 2012
by Tom Igoe
modified 12 Aug 2013
by Soohwan Kim
Modified 18 Aug 2015
by Vassilis Serasidis
=========================================================
Ported to STM32F103 on 18 Aug 2015 by Vassilis Serasidis
<---- Pinout ---->
W5x00 <--> STM32F103
SS <--> PA4 <--> BOARD_SPI1_NSS_PIN
SCK <--> PA5 <--> BOARD_SPI1_SCK_PIN
MISO <--> PA6 <--> BOARD_SPI1_MISO_PIN
MOSI <--> PA7 <--> BOARD_SPI1_MOSI_PIN
=========================================================
*/
#include <SPI.h>
#include <Ethernet_STM.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:
#if defined(WIZ550io_WITH_MACADDRESS) // Use assigned MAC address of WIZ550io
;
#else
byte mac[] = {0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED};
#endif
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 gotAMessage = false; // whether or not you got a message from the client yet
void setup() {
// Open serial communications and wait for port to open:
Serial.begin(9600);
// this check is only needed on the Leonardo:
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only
}
// start the Ethernet connection:
Serial.println("Trying to get an IP address using DHCP");
#if defined(WIZ550io_WITH_MACADDRESS)
if (Ethernet.begin() == 0) {
#else
if (Ethernet.begin(mac) == 0) {
#endif
Serial.println("Failed to configure Ethernet using DHCP");
// initialize the ethernet device not using DHCP:
#if defined(WIZ550io_WITH_MACADDRESS)
Ethernet.begin(ip, gateway, subnet);
#else
Ethernet.begin(mac, ip, gateway, subnet);
#endif
}
// print your local IP address:
Serial.print("My IP address: ");
ip = Ethernet.localIP();
for (byte thisByte = 0; thisByte < 4; thisByte++) {
// print the value of each byte of the IP address:
Serial.print(ip[thisByte], DEC);
Serial.print(".");
}
Serial.println();
// start listening for clients
server.begin();
}
void loop() {
// wait for a new client:
EthernetClient client = server.available();
// when the client sends the first byte, say hello:
if (client) {
if (!gotAMessage) {
Serial.println("We have a new client");
client.println("Hello, client!");
gotAMessage = true;
}
// 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.print(thisChar);
}
}