how to add digital pin status in json

Submitted by Guest on Sat, 11/06/2011 - 14:38

can any one help me to add status of digital pin to json string.

i have tried to add but emon sends status to emoncms only ones on startup and then repeat the same status, even if status has been changed

Re: how to add digital pin status in json

Submitted by TrystanLea on Sat, 11/06/2011 - 16:12.

Hello bjalodia, Could you show me the code your using to send the status?

Are you generating a json string along the following lines:

if digital input is HIGH then json string = {status:1)

if digital input is LOW then json string = {status:0)

Re: how to add digital pin status in json

Submitted by bjalodia (not verified) on Sat, 11/06/2011 - 16:52.

Dear Tystan

I am using the following modified code of emon.

or if you can provide the code it will be very helpful

//--------------------------------------------------------------------------------------

// Mains AC Non Invasive 3 + Ethernet Example

// Last revision 30 November 2010

// Licence: GNU GPL openenergymonitor.org

// By Trystan Lea

//--------------------------------------------------------------------------------------

// ETHERNET

//--------------------------------------------------------------------------------------

#include "EtherShield.h"

byte mac[] = {0x54,0x52,0x58,0x10,0x00,0x18}; //Ethernet shield mac address

byte ip[] = {172,16,1,9}; //Ethernet shield ip address

byte gateway[] = {172,16,1,1}; //Gateway ip

byte server[] = {172,16,1,4}; //Server ip

#define port 80

char str[250];

const int buttonPin = 2;

//--------------------------------------------------------------------------------------

// SETUP

//--------------------------------------------------------------------------------------

void setup()

{

pinMode(buttonPin, INPUT);

client_setup(mac,ip,gateway,server); //Setup ethernet client

}

//--------------------------------------------------------------------------------------

// MAIN LOOP

//--------------------------------------------------------------------------------------

void loop()

{

strcpy(str,"/emoncms/post.php?json="); //URL

srtJSON(str); //Start JSON string

addJSON(str,"D2", digitalRead(buttonPin)); //Add a variable

endJSON(str); //End JSON string

ethernet_send("",str);

}

Re: how to add digital pin status in json

Submitted by bjalodia (not verified) on Sat, 11/06/2011 - 17:02.

Dear Trystan,

I am trying to make school project in which I am trying to relate library room temperature and number of time door opened.

I am using temperature sensor LM35, arduino Duemilanove, enc28j60 ethernet module and enomcms

can you please help with this project

Re: how to add digital pin status in json

Submitted by Guest on Wed, 15/06/2011 - 21:22.

Dear,

Where I found post.php for receive my ENC2860 informations ?

Please I need a Simple PHP receiver.

Best Regards,

JORGE ORENGO

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