connecting to a tcp port and displaying the data

[Seth]

I am doing a project with a embedded processor. I have a program that
can take the data from the serial port and send it out a tcp port of
my choosing. I want to be able to read that stream and display in on
a website.

The data is going to be really basic just a couple of temperatures. I
just want to have two text boxes that update the temperature every
couple minutes or so. I have read some information on the php site
but I don't know where to start. Any help would be great.

Thanks,
Seth

[The Natural Philosopher]

Re: connecting to a tcp port and displaying the data

Seth wrote:

I am doing a project with a embedded processor. I have a program that
can take the data from the serial port and send it out a tcp port

Do you mean send out of, or to a tcp port..is the embedded stuff a
sender of data via TCP or a listener for requests, on a port?


Send out via a port of my choosing makes no sense. TCP i ahbitually sent
on random ports. Its where thelistener is boud to that is the key thing.

of

my choosing. I want to be able to read that stream and display in on
a website.
>

Php may not be your friend here. What you want is a daemon that can read
the data and update a web page..independt ly of whether someone is
watching the pages at all..

Or do you want a user to click on a page,and have that page then go and
read the embedded data? And put a timed refersh on that page?

Depends whether you want to e.g./ record the data for posterity on a
timed basis, or just on a 'need to know/show' one.

The data is going to be really basic just a couple of temperatures. I
just want to have two text boxes that update the temperature every
couple minutes or so. I have read some information on the php site
but I don't know where to start. Any help would be great.
>

If your embedded device can *listen* on a port, you want to explore the
fsockopen() and fread() commands in the php library.

SEE

http://www.php.net/manual/en/function.fsockopen.php

You would use something like

$fp=fsockopen(" $MyEembeddedIPA ddress",$myspec ialport);

and then an fread on $fp until you had the data, and then an fclose($fp);

Thanks,
Seth

[Jerry Stuckle]

Re: connecting to a tcp port and displaying the data

Seth wrote:

I am doing a project with a embedded processor. I have a program that
can take the data from the serial port and send it out a tcp port of
my choosing. I want to be able to read that stream and display in on
a website.
>
The data is going to be really basic just a couple of temperatures. I
just want to have two text boxes that update the temperature every
couple minutes or so. I have read some information on the php site
but I don't know where to start. Any help would be great.
>
Thanks,
Seth
>

The easiest might be to just format the data as an HTTP POST or GET
request and send it to a page on your website. Use .htaccess to limit
access to the page to a the localhost (127.0.0.1).

--
=============== ===
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attgl obal.net
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