#include <Ethernet.h> #include <Dhcp.h> #include <Twitter.h> #include <string.h> byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED }; boolean ipAcquired = false; Twitter twitter("YourID:Password"); char msg[] = "Hello, World! I'm Arduino!"; void setup() { Serial.begin(9600); // GET IP Address! Serial.println("getting ip..."); int result = Dhcp.beginWithDHCP(mac); if(result == 1) { ipAcquired = true; byte buffer[6]; Serial.println("ip acquired..."); Dhcp.getMacAddress(buffer); Serial.print("mac address: "); printArray(&Serial, ":", buffer, 6, 16); Dhcp.getLocalIp(buffer); Serial.print("ip address: "); printArray(&Serial, ".", buffer, 4, 10); Dhcp.getSubnetMask(buffer); Serial.print("subnet mask: "); printArray(&Serial, ".", buffer, 4, 10); Dhcp.getGatewayIp(buffer); Serial.print("gateway ip: "); printArray(&Serial, ".", buffer, 4, 10); Dhcp.getDhcpServerIp(buffer); Serial.print("dhcp server ip: "); printArray(&Serial, ".", buffer, 4, 10); Dhcp.getDnsServerIp(buffer); Serial.print("dns server ip: "); printArray(&Serial, ".", buffer, 4, 10); delay(3000); // POST Twitter! Serial.println("connecting..."); if (twitter.post(msg)) { int status = twitter.wait(); if (status == 200) { Serial.println("OK."); } else { Serial.print("failed : code "); Serial.println(status); } } else { Serial.println("connection failed."); } } else Serial.println("unable to acquire ip address..."); } void printArray(Print *output, char* delimeter, byte* data, int len, int base) { char buf[10] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; for(int i = 0; i < len; i++) { if(i != 0) output->print(delimeter); output->print(itoa(data[i], buf, base)); } output->println(); } void loop() { }