arduino stuffs
Diffstat (limited to 'libraries/Ethernet/examples/UDPSendReceiveString/UDPSendReceiveString.ino')
| -rw-r--r-- | libraries/Ethernet/examples/UDPSendReceiveString/UDPSendReceiveString.ino | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/libraries/Ethernet/examples/UDPSendReceiveString/UDPSendReceiveString.ino b/libraries/Ethernet/examples/UDPSendReceiveString/UDPSendReceiveString.ino new file mode 100644 index 0000000..0c76b02 --- /dev/null +++ b/libraries/Ethernet/examples/UDPSendReceiveString/UDPSendReceiveString.ino @@ -0,0 +1,139 @@ +/* + UDPSendReceiveString: + This sketch receives UDP message strings, prints them to the serial port + and sends an "acknowledge" string back to the sender + + A Processing sketch is included at the end of file that can be used to send + and received messages for testing with a computer. + + created 21 Aug 2010 + by Michael Margolis + + This code is in the public domain. + */ + + +#include <Ethernet.h> +#include <EthernetUdp.h> + +// Enter a MAC address and IP address for your controller below. +// The IP address will be dependent on your local network: +byte mac[] = { + 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED +}; +IPAddress ip(192, 168, 1, 177); + +unsigned int localPort = 8888; // local port to listen on + +// buffers for receiving and sending data +char packetBuffer[UDP_TX_PACKET_MAX_SIZE]; // buffer to hold incoming packet, +char ReplyBuffer[] = "acknowledged"; // a string to send back + +// An EthernetUDP instance to let us send and receive packets over UDP +EthernetUDP Udp; + +void setup() { + // You can use Ethernet.init(pin) to configure the CS pin + //Ethernet.init(10); // Most Arduino shields + //Ethernet.init(5); // MKR ETH shield + //Ethernet.init(0); // Teensy 2.0 + //Ethernet.init(20); // Teensy++ 2.0 + //Ethernet.init(15); // ESP8266 with Adafruit Featherwing Ethernet + //Ethernet.init(33); // ESP32 with Adafruit Featherwing Ethernet + + // start the Ethernet + Ethernet.begin(mac, ip); + + // Open serial communications and wait for port to open: + Serial.begin(9600); + while (!Serial) { + ; // wait for serial port to connect. Needed for native USB port only + } + + // Check for Ethernet hardware present + if (Ethernet.hardwareStatus() == EthernetNoHardware) { + Serial.println("Ethernet shield was not found. Sorry, can't run without hardware. :("); + while (true) { + delay(1); // do nothing, no point running without Ethernet hardware + } + } + if (Ethernet.linkStatus() == LinkOFF) { + Serial.println("Ethernet cable is not connected."); + } + + // start UDP + Udp.begin(localPort); +} + +void loop() { + // if there's data available, read a packet + int packetSize = Udp.parsePacket(); + if (packetSize) { + Serial.print("Received packet of size "); + Serial.println(packetSize); + Serial.print("From "); + IPAddress remote = Udp.remoteIP(); + for (int i=0; i < 4; i++) { + Serial.print(remote[i], DEC); + if (i < 3) { + Serial.print("."); + } + } + Serial.print(", port "); + Serial.println(Udp.remotePort()); + + // read the packet into packetBufffer + Udp.read(packetBuffer, UDP_TX_PACKET_MAX_SIZE); + Serial.println("Contents:"); + Serial.println(packetBuffer); + + // send a reply to the IP address and port that sent us the packet we received + Udp.beginPacket(Udp.remoteIP(), Udp.remotePort()); + Udp.write(ReplyBuffer); + Udp.endPacket(); + } + delay(10); +} + + +/* + Processing sketch to run with this example + ===================================================== + + // Processing UDP example to send and receive string data from Arduino + // press any key to send the "Hello Arduino" message + + + import hypermedia.net.*; + + UDP udp; // define the UDP object + + + void setup() { + udp = new UDP( this, 6000 ); // create a new datagram connection on port 6000 + //udp.log( true ); // <-- printout the connection activity + udp.listen( true ); // and wait for incoming message + } + + void draw() + { + } + + void keyPressed() { + String ip = "192.168.1.177"; // the remote IP address + int port = 8888; // the destination port + + udp.send("Hello World", ip, port ); // the message to send + + } + + void receive( byte[] data ) { // <-- default handler + //void receive( byte[] data, String ip, int port ) { // <-- extended handler + + for(int i=0; i < data.length; i++) + print(char(data[i])); + println(); + } + */ + + |