Re: Maximum xml Data Size: RCM4300 DC10-72

Mike,

If you can share some code, that will help with guiding you.

First off, a quirk of Dynamic C is that it doesn't support arrays of over 32KB in size, but the compiler won't warn you about that.

It also isn't efficient to keep an XML version of your test data, just so you can send it to web requests.  My recommendation would be to keep your logged data and make use of the HTTP server's CGI interface for sending data across multiple function calls.

The "cgi_concurrent.c" sample is overly complex, but demonstrates the interface and how you track the state of the CGI call so you can fill in part of the outbound buffer with data on each call to the function.  You might also be able to look up information on the CGI interface in the Rabbit TCP/IP manuals on Digi's website.

If you have trouble understanding it, I can probably help out as well.  Put together a simple program sample that sets up the HTTP server, and has a far array of test data.  Email it to me off list and I'll flesh out some code to dump the readings as XML.

-Tom


On Feb 20, 2016, at 12:25 AM, 'Mike Moyes' mike-g5W9c/[email protected] [rabbit-semi] wrote:

> Hi Tom,
> 
> I have created an array, filled the array with test data.
> 
> This same array is declared in the xml file.
> 
>  
> 
> To simplify matters I wrote a skeleton program that only has 2 arrays and 2 associated different xml files.
> 
> I did as you suggested by directly accessing the xml files from the browser.
> 
> At first I was getting xml file read error messages (see screenshots), then I discovered if I made the array size smaller then the xml data could read correctly.
> 
> The point at which this happens is when the array size is “578” (correct xml file read) and “579” (xml file read errors).
> 
> So any size above 579 would cause read errors, but the error message also changed with the array size used.
> 
>  
> 
> I then changed  this “#define  HTTP_MAXBUFFER      4096” from 1024.
> 
> After that I could read array sizes up to 2k.
> 
> Above 2k the compiler generates error message: “ line  869 : ERROR IP.LIB       : Out of variable data space. Please refer to the Dynamic C User's Manual for more information.”
> 
>  
> 
> I am currently trying put the arrays into “far” memory:  far char logdata1[lenArray]={0};
> 
> Is there more that I have specify to move the arrays to far mem?
> 
> Because the  problem now is with xml data again, I’m getting “garbage”  if I do a direct xml file read.
> 
> Are there specific  requirements when using far data in the xml file?
> 
>  
> 
> Thanks,
> 
> Mike
>