Embedded Linux for data acquisition and control

Peter Uttley P.Uttley-97 at student.lboro.ac.uk
Tue Feb 20 22:50:35 EST 2001

HI Srinivas,

I too initially looked at using apache but was wisely redirected by Wolfgang
Denx to look at the GoAhead webserver.
GoAhead is an open source webserver ported to every OS you can think of, and
only has a few basic license requirements if you want to use it commercial.
It has many features of apache include cgi, asp e.t.c.
Have a look at www.goahead.com

Hope that helps,


----- Original Message -----
From: Srinivas Rao.M <msrao at vxl.co.in>
To: Peter Uttley <P.Uttley-97 at student.lboro.ac.uk>
Cc: <linuxppc-embedded at lists.linuxppc.org>
Sent: 20 February 2001 11:30
Subject: Re: Embedded Linux for data acquisition and control

> Hello Peter, and other list members
> I am having a question rather than an answer for the earlier posted
> question..
>   I am also having the similar problem, as Mr Peter's . I have the
> embedded system based on the FADS860T having the MPC860T Processor. On the
custom board i
> have a number of serial devices. The parameters of the serial devices i
> want to control through the web browser. I have the Text based interface
> (CLI) to control and configure these serial port parameters. The
> such as the baud rate, Character width, parity bit,etc., i am presently
> configuring it through the Command line interface. I want to do it with
> the help of the web browser on the remote machine.
> I would really appreciate, if someone gives me the idea of doing this. I
> have a FreeBSD4.3 compatible network stack on this custom board. My
> initial idea was to port a WebServer such as Apache, onto my system.
> But that looks tedious job, as the source code itself is very big. I am
> looking for the open source Webserver for the embedded devices. Can any
> one suggest me any alternative approach to my task.
> regards,
> Srini...
> On Thu, 15 Feb 2001, Peter Uttley wrote:
> >
> > Hi Everyone,
> >
> > Hope someone can give me a bit of advice on the best way to tackle a
> > university project I'm working on.
> >
> > OK, I've currently ported Linux to my embedded MPC-850 board, many
thanks to
> > the help of Frank Przybylski with his BDM4GDB and the invaluable advice
> > Wolfgang Denx, thanks Guys!
> >
> > Now what I want to do with the board is use it for data acquisition and
> > control of peripheral systems via a web interface.
> > I'm currently building my peripheral hardware which then simply dumps
> > data down the serial port to the MPC-850.
> >
> > I would really appreciate some advice on the best why to handle the data
> > coming in on the serial port and get it into the webserver.
> >
> > My initial thoughts are,
> >
> > I write a bit of software which monitors the serial port and has its own
> > little protocols with my peripheral hardware, the data is then written
> > a file which is read by my web server (I'm using GoAhead-Thanks for the
> > pointer Frank) which has a active server page to display the
> >
> > However this seems a bit of a hack way of doing it, and could cause
> > when I'm trying to send data to my device to electronically open an door
> > instance.
> >
> > Is it possible therefore to directly receive and transmit data from my
> > server to the serial port, I know you can write any C code in ASP or CGI
> > scripts but I need to have some sort of control, monitoring, waiting for
> > data e.t.c. which seem best handled by some sort of daemon or device
> >
> > Hope that makes sense and that someone can give me a few clues as to
> > direction I should take, the project time schedules quite tight so I
> > want to be heading down too much of a blind alley.
> >
> > Thanks for you time,
> >
> > Regards,
> >
> > Pete.
> >
> >
> >
> --
> When you are content to be simply yourself and don't compare or compete,
> everybody will respect you.
> -Lao-Tzu

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