WebClient_HDC1000_MPL115.ino

#include <EtherCard.h>
#include <Wire.h>
#include <HDC1000.h>
#include <Adafruit_MPL115A2.h>


#define USE_DHCP 0
#define USE_DNS  0

//
// Ethernet configratios
//
byte Ethernet::buffer[700];
static byte MyMAC[] = { 0x20,0x15,0x08,0x15,0x17,0x05 };

#if USE_DHCP

#else
  const uint8_t GWIP[] = {192, 168, 0,  1};
  const uint8_t MyIP[] = {192, 168, 0, 42};
#endif


#if USE_DNS
  const char HisName[] = "foo.bar.com";
#else
  const char HisName[]  = "192.168.0.72";
  const uint8_t HisIP[] = {192, 168, 0, 72};
#endif

static void etherCallback (byte status, word off, word len) {
//  Serial.println(">>>");
//  Ethernet::buffer[off+300] = 0;
//  Serial.print((const char*) Ethernet::buffer + off);
//  Serial.println("...");

  Serial.println("sent.");
}


//
//  HDC1000
//
HDC1000 hdc1000(0x40, 4);

//
//  MPL115A2
//
Adafruit_MPL115A2 mpl115a2;


//
// other control
//

int    count = 1;
static uint32_t timer;


void setup () {
  Serial.begin(57600);
  Serial.println("setup started.");

  // ethernet
  //
  if (ether.begin(sizeof Ethernet::buffer, MyMAC) == 0) 
    Serial.println(F("Failed to access Ethernet controller"));

  if (!ether.dhcpSetup())
    Serial.println(F("DHCP failed"));
    
#if USE_DHCP  
#else
  EtherCard::copyIp(ether.gwip, GWIP);
  EtherCard::copyIp(ether.myip, MyIP);
#endif

#if USE_DNS
  if (!ether.dnsLookup(hisname))
    Serial.println("DNS failed");
#else
  EtherCard::copyIp(ether.hisip, HisIP);
#endif
  ether.hisport = 2999;      
  
  ether.printIp("IP:  ", ether.myip);
  ether.printIp("GW:  ", ether.gwip);  
#if USE_DNS
  ether.printIp("DNS: ", ether.dnsip);  
#endif
  ether.printIp("SRV: ", ether.hisip);


  //
  //  HDC1000
  hdc1000.begin();
  
  //
  //  MPL115A2
    mpl115a2.begin();
}


void loop () {  
  char buf[100], tbuf[10], hbuf[10];
  float temperature;
  float humidity;
  float pressureHPA  =  996;

  ether.packetLoop(ether.packetReceive());
  
  if (millis() > timer) {
    timer = millis() + 5000;
    
    temperature = hdc1000.getTemp();
    dtostrf(temperature, 1, 2, tbuf);
    
    humidity = hdc1000.getHumi();
    dtostrf(humidity, 1, 2, hbuf);
    
    pressureHPA = mpl115a2.getPressure() * 10;  
  
    Serial.println();
    Serial.print("<<< POST ");

    sprintf(buf, "{ \"temperature\":%s,\"humidity\":%s,\"pressure\":%d }",
                 tbuf, hbuf, (int)pressureHPA);
    ether.httpPost(
      PSTR("/weather"), 
      HisName, 
      PSTR("Content-type: application/json"), 
      buf, 
      etherCallback);
  }
}