Displaying GET data on the Webserver sent by RN XV

Projects Networking, Protocols, and Devices
1

Hi,
My first topic in this expert community. Plus, I am new to the Arduino world so please excuse my trivial question.
Here it is.
I am trying to send my temperature sensor data using the RNXV (192.168.1.2:2000) using a Xbee Comm shield to a webserver at 192.168.1.3:8080.
The comm string is set to GET$/Health/test.php?val= where as connection is set to uart mode 2 in order to send the data as soon as it is written to the serial.
To see whether the data is coming to the page, there is a php code on the test.php page that prints the GET variable using the sole command print_r($_GET);. But I dont see anything coming to the webserver though I can see that the led is blinking, meaning that it is sending something out. And that the page (php commad) is displaying me an empty array as Array ( ). I tried to print the whole header but found no GET variable as val in there .
However, when I browse to 192.168.1.2:2000 (my RN XV) I can see data coming and displayed as the string GET /Health/test.php?val=54656d702032372e34352043 http /1.0 host=dns1
The data is supposed to be sent to Health/test.php page, Right?? Any comments, suggestions. Is there something wrong with the php code.
A little help would be really appreciated.

2

The comm string is set to GET$/Health/test.php?val=

which isn't a valid GET request (or any other kind of request that HTTP supports). What is that $ doing in there?

But I dont see anything coming to the webserver though I can see that the led is blinking

The LED on the server is blinking?

GET /Health/test.php?val=54656d702032372e34352043 http /1.0 host=dns1

Again, this doesn't look right. There is no space between the http and the /1.0 and what is the host=dns stuff doing?

Any comments, suggestions. Is there something wrong with the php code.

There is likely nothing wrong with the PHP code. The Arduino code, on the other hand, is probably wrong. But, of course, we can't see it.

3

Hi PaulS,
Here is how I set the RN XV from putty.

set ip dhcp 1
set ip protocol 18
set wlan join 1
set wlan phrase WPAPassword
set wlan ssid EDAS //EDAS is the wlan SSID
set dns address 192.168.1.1
set ip host 192.168.1.3 // my webserver
set ip remote 8080
set c r GET$/Health/test.php?val= //this is how I set the GET data to be sent- 
set option format 1
set uart mode 2
save 
reboot

The com string (GET statement) is set as per the instruction manual instruct to set it. It say that the $ is for space replacement. Please refer to page 57 of the manual for example. The connection of the RN XV to the AP is fine. I can ping it, can have a Telnet connection and can see the Wifly RNXV in the router attached devices list
The code uploaded to the Arduino is

#include <eHealth.h>
void setup()
{

Serial.begin(9600);
}

void loop()
{
while(1){
float temp = eHealth.getTemperature();     
  Serial.print(temp); 
  delay(2000);   // wait for a second
}
}

From the LED blinking, I meant to say the LED on the RN XV module (Not on the Server)

I typed the output string on the 192.168.1.2:2000 (the RN XV) so sorry for the typos. here is the exact output that I get at the browser
GET /Health/test.php?val=32372e3636 HTTP/1.0 Host: dns1

And about the host: dns1, to be honest I have no idea. May be something default. It may be related to the set option format as the value selected appends additional variables with the data to be sent (but as a newbie, I dont understand it at this moment)