感谢 @zcbzjx 在 http://www.geek-workshop.com/forum.php?mod=viewthread&tid=2260 提供的资料
采用 修改以后的ethercard 库函数（添加了一个udpreply 方法用于自动ip寻址)
etercard 修改后的库： userfiles/arduino/ethercard-lewei.zip）
// Simple demo for feeding some random data to Pachube.
// 2011-07-08 <jc@wippler.nl> http://opensource.org/licenses/mit-license.php
#include <EtherCard.h>
byte Ethernet::buffer[700];
// change these settings to match your own setup
#define FEED "5942"
#define APIKEY "4c2a67e84aac4dbfb3e41821ca57a7c8"
// ethernet interface mac address, must be unique on the LAN
byte mymac[] = { 0x74,0x69,0x69,0x2D,0x30,0x31 };
char website[] PROGMEM = "open.lewei50.com";
const int ledPin = 8;
char* on = "ON";
char* off = "OFF";
char* statusLabel;
char* buttonLabel;
char*udpReply="{"deviceName":"01","username":"laoliu1982","port":80,"api":"api","requestType":"get"}";
#define gPB ether.buffer
#define UDP_DP_HIGH 36
#define UDP_DP_LOW 37
#define DSTPORT_HIHG 0x26
#define DSTPORT_LOW 0xe7
int x=1;
int sensorValue = 0;
int sensorPin = A0;
uint32_t timer;
Stash stash;
void setup () {
Serial.begin(9600);
Serial.println(" [webClient]");
pinMode(ledPin, OUTPUT);
digitalWrite(ledPin, LOW);
buttonLabel = "0";
if (!ether.begin(sizeof Ethernet::buffer, mymac, 10))
Serial.println( "Failed to access Ethernet controller");
else
Serial.println("Ethernet controller initialized");
if (!ether.dhcpSetup())
Serial.println("DHCP failed");
ether.printIp("IP: ", ether.myip);
ether.printIp("GW: ", ether.gwip);
ether.printIp("DNS: ", ether.dnsip);
if (!ether.dnsLookup(website))
Serial.println("DNS failed");
ether.printIp("SRV: ", ether.hisip);
Serial.println(" webClient setup end");
}
void loop () {
word len = ether.packetReceive();
word pos = ether.packetLoop(len);
if(len)
{
if(gPB[IP_PROTO_P]==IP_PROTO_UDP_V)
{
if((gPB[UDP_DP_HIGH]==DSTPORT_HIHG)&&(gPB[UDP_DP_LOW]==DSTPORT_LOW))
{
Serial.println("---Received an udp 9959 packet---");
// ether.sendUdp(udpReply,strlen(udpReply),60000,(gPB + IP_SRC_P),9960);
ether.leweiUdpReply(udpReply,strlen(udpReply),9960);
}
}
}
if(pos)
{
Serial.print("len:");
Serial.println(len);
if(strstr((char *)Ethernet::buffer + pos, "&f=getAllSensors") != 0)
{
Serial.println("Received GetAllSensor command");
BufferFiller bfill = ether.tcpOffset();
bfill.emit_p(PSTR("HTTP/1.0 200 OK "
"Content-Type: text/html Pragma: no-cache "
"{"successful":true,"message":null,"data":[{"id":"1","type":"jdq","name":"s1","value":"$S","status":"ok"}]}"),buttonLabel);
ether.httpServerReply(bfill.position());
}
if(strstr((char *)Ethernet::buffer + pos, "&f=updateSensor&p1=1&p2=0") != 0)
{
Serial.println("Received OFF command");
BufferFiller bfill = ether.tcpOffset();
bfill.emit_p(PSTR("HTTP/1.0 200 OK "
"Content-Type: text/html Pragma: no-cache "
"{"data":{"id":"1","type":"jdq","name":"s1","value":"0","status":"ok"},"successful":true,"message":null}"));
ether.httpServerReply(bfill.position());
digitalWrite(ledPin, LOW);
buttonLabel="0";
}
if(strstr((char *)Ethernet::buffer + pos, "&f=updateSensor&p1=1&p2=1") != 0)
{
Serial.println("Received ON command");
BufferFiller bfill = ether.tcpOffset();
bfill.emit_p(PSTR("HTTP/1.0 200 OK "
"Content-Type: text/html Pragma: no-cache "
"{"data":{"id":"1","type":"jdq","name":"s1","value":"1","status":"ok"},"successful":true,"message":null}"));
ether.httpServerReply(bfill.position());
digitalWrite(ledPin, HIGH);
buttonLabel="1";
}
}
if (millis() > timer) {
//timer = millis() + 10000;
timer = millis() + 3000;
sensorValue = analogRead(sensorPin);
//Serial.println(x);
Serial.println(sensorValue);
// generate two fake values as payload - by using a separate stash,
// we can determine the size of the generated message ahead of time
x=x+1;
byte sd = stash.create();
stash.print("[{"Name":"s1","Value":");
//stash.print((word)x);
stash.print((word)sensorValue);
stash.print("},{"Name":"T1","Value":");
stash.print((word)x);
stash.println("}]");
stash.save();
// generate the header with payload - note that the stash size is used,
// and that a "stash descriptor" is passed in as argument using "$H"
Stash::prepare(PSTR("POST /api/V1/Gateway/UpdateSensors/01 HTTP/1.1 "
"Host: open.lewei50.com "
"Content-Length: $D "
"userkey: $F "
" "
"$H"),stash.size(), PSTR(APIKEY),sd);
// send the packet - this also releases all stash buffers once done
ether.tcpSend();
}
}