C++ and Html?

sei046

Hi guys,
Im programming an eCog1x cyan embedded system. Its done through C++.
I can input and save a variable "Voltage". The board also has an onboard
webserver which can display a web page. It doesn not Support PHP. Can anyone explain how I can display this variable on the html page. Cgi? Javascript?

Any help is greatly appreciated


Dave

seamus

What webserver is running on the system?

CGI would be the man for this, Perl would be the easiest, but you can use C or C++ (in some cases).

sei046

Thanks so much for reply.
Its this
http://www.sics.se/~adam/old-uip/uip-1.0-refman/

I just dont understand how to get a variable from c to html.
Throughout this webserver there is dynamic content, and from what I see it has
something like

%!/Header ......

Then later


Net Statistics = %! net-stats

So somehow the C is outputting to the header or something and this is been referenced in the html.

seamus

It's running Apache 2.2.6, so it's not an old webserver.

What you're describing looks like some kind of directive, though I don't know enough about Apache to say. Basically it looks like the "%!" operator is something which tells Apache to fetch information from a script or to run a script.

sei046

So lets say I have a file system.
In my main function I have a loop which constantly updates a variabel Voltage.
How do I get this variable displayed on a webpage. Even statically for now. but ultimately
in real time.

Any ideas? Cgi?

oneintotwo

Easiest, safest, simplest way is a database.

Get the C software to connect to the MySQL server (there are libraries available to do this) and update the database with the new value.

Use PHP/MySQL on web server. Write a PHP script to grab the value from the database and print it on the web page.