Sending data from DHT11 to Xively using Xbees [SOLVED]

hello,

i trying send temperature , humidity data dht11 sensor between 2 arduino mega 2560's using xbees.  the code transmitter follows

code: [select]

#include "dht.h"
#define dhtpin 2    
#define dhttype dht11  
dht dht(dhtpin, dhttype);

void setup()
{
serial.begin(9600);
}

void loop()
{

float h = dht.readhumidity();
float t = dht.readtemperature();

serial.print("<t:");
serial.print(t);
serial.print(">");

delay(2000);

serial.print("<h:");
serial.print(h);
serial.print(">");

delay(2000);
}

the code receiving arduino follows:-

code: [select]

#include <spi.h>
#include <ethernet.h>
#include <httpclient.h>
#include <xively.h>


// mac address ethernet shield
byte mac[] = { mac address };
int hum;
int temp;
char indata[24]; // reading serial tx
byte index;  // reading serial tx
boolean started = false; // reading serial tx
boolean ended  = false; // reading serial tx

// xively key let upload data
char xivelykey[] = "xivelykey";

// analog pin we're monitoring (0 , 1 used ethernet shield)


// define strings our datastream ids
char sensorid[] = "humidity";
char sensorid2[] = "temperature";
const int buffersize = 140;
char buffervalue[buffersize]; // enough space store string we're going send
xivelydatastream datastreams[] = {
 xivelydatastream(sensorid, strlen(sensorid), datastream_float),
 xivelydatastream(sensorid2, strlen(sensorid2), datastream_float),

};
// finally, wrap datastreams feed
xivelyfeed feed(xxxxxx, datastreams, 2);/* number of datastreams */

ethernetclient client;
xivelyclient xivelyclient(client);


void setup() {
 // put setup code here, run once:
 serial.begin(9600);
 
 serial.println("starting multiple datastream upload xively...");
 serial.println();

 while (ethernet.begin(mac) != 1)
 {
   serial.println("error getting ip address via dhcp, trying again...");
   delay(15000);
 }
}

void loop() {

//start of code read transmitter
while(serial.available() > 0)
 {
char achar = serial.read();
if(achar == '<')
{
   started = true;
   index = 0;
   indata[index] = '\0';
}
else if(achar == '>')
{
   ended = true;
}
else if(started)
{
   indata[index] = achar;
   index++;
   indata[index] = ',';
}
 }

 if(started && ended)
 {
// use value
if(indata[0] == 't')
{
  indata[0] = ' ';
          int temp = atoi(indata);
          serial.println(" ");
  serial.print("temp:");
          serial.print(indata);
          serial.print("c");
          serial.println(" ");
       
}
else if(indata[0] == 'h')
    {
  indata[0] = ' ';
          int hum = atoi(indata);
  serial.println(" ");
          serial.print("humidity:");
          serial.print(indata);
          serial.print("%");
          serial.println(" ");
         
    }

started = false;
ended = false;

index = 0;
indata[index] = '\0';
 }
 
 //end of code read transmitter

 datastreams[0].setfloat(temp);
 datastreams[1].setfloat(hum);



 serial.print("read sensor value temp ");
 serial.println(datastreams[0].getfloat());
 serial.print("read sensor value hum ");
 serial.println(datastreams[1].getfloat());


 serial.println("uploading xively");
 int ret = xivelyclient.put(feed, xivelykey);
 serial.print("xivelyclient.put returned ");
 serial.println(ret);

 serial.println();
   
 delay(15000);
}

i can send data xively directly arduino ok , can send , receive temperature , humidity data between 2 arduino's via xbees ok can't seem integrate serial communication between arduino's xively.  whenever try cannot temperature , humidity readings.  if have @ code , suggest going wrong appreciated.

kind regards

the network code should called when started==true  && ended == true;
if see correctly every loop tries t send data xively.

you can improve code defining separate function separate steps.

code: (not tested) [select]


void handleincomingserial()
{
  //start of code read transmitter
  while(serial.available() > 0)
  {
    char achar = serial.read();
    if(achar == '<')
    {
      started = true;
      index = 0;
      indata[index] = '\0';
    }
    else if(achar == '>')
    {
      ended = true;
    }
    else if(started)
    {
      indata[index] = achar;
      index++;
      indata[index] = ',';
    }
  } 
}

void printvalues()
{
  // use value
  if(indata[0] == 't')
  {
    indata[0] = ' ';
    int temp = atoi(indata);
    serial.println(" ");
    serial.print("temp:");
    serial.print(indata);
    serial.print("c");
    serial.println(" ");
  }
  else if(indata[0] == 'h')
  {
    indata[0] = ' ';
    int hum = atoi(indata);
    serial.println(" ");
    serial.print("humidity:");
    serial.print(indata);
    serial.print("%");
    serial.println(" ");
  }
}

void sendotoxively()
{
  datastreams[0].setfloat(temp);
  datastreams[1].setfloat(hum);
 
  serial.print("read sensor value temp ");
  serial.println(datastreams[0].getfloat());
  serial.print("read sensor value hum ");
  serial.println(datastreams[1].getfloat());


  serial.println("uploading xively");
  int ret = xivelyclient.put(feed, xivelykey);
  serial.print("xivelyclient.put returned ");
  serial.println(ret);

  serial.println();
}


void loop()
{
  handleincomingserial();



  if(started && ended)
  {
    printvalues();
   
    sendotoxively();

    started = false;
    ended = false;
    index = 0;
    indata[index] = '\0';
  }

  delay(15000);
}


Arduino Forum > Using Arduino > Networking, Protocols, and Devices (Moderator: fabioc84) > Sending data from DHT11 to Xively using Xbees [SOLVED]

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