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49 lines
1.6 KiB
Plaintext
Executable File
49 lines
1.6 KiB
Plaintext
Executable File
#include <Ethernet.h>
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#include <UdpString.h>
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#include <WString.h>
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/* UdpSendString.pde: Example how to send packets over UDP using the String library
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* to check for received packets on Unix-ish setup, execute:
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* sudo tcpdump -A -ien0 "udp port 8000"
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* bjoern@cs.stanford.edu 12/30/2008 */
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/* ETHERNET CONFIGURATION
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* ARDUINO: set MAC, IP address of Ethernet shield, its gateway,
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* and local port to listen on for incoming packets */
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byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED }; //MAC address to use
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byte ip[] = { 192, 168, 11, 200 }; // Arduino's IP address
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byte gw[] = { 192, 168, 11, 1 }; // Gateway IP address
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int localPort = 8888; //local port to listen on
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/* TARGET: set this to IP/Port of computer that will receive
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* UDP messages from Arduino */
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byte targetIp[] = { 192, 168, 11, 15};
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int targetPort = 8000;
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/* Strings hold the packets we want to send */
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String asciiString;
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String binaryString(4); // if we want to send non-ASCII, we have to provide a capacity for the String
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void setup() {
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Ethernet.begin(mac,ip,gw);
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UdpString.begin(localPort);
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asciiString = "Hello, World";
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binaryString.getBytes()[0]=0x00;
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binaryString.getBytes()[1]=0x01;
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binaryString.getBytes()[2]=0x02;
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binaryString.getBytes()[3]=0x03;
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}
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void loop() {
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// send a normal, zero-terminated string.
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UdpString.sendPacket(asciiString,targetIp,targetPort);
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delay(1000);
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// sends a binary string that can contain 0x00 in the middle
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// you have to specify the length;
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UdpString.sendPacket(binaryString,binaryString.capacity(),targetIp,targetPort);
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delay(1000);
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}
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