At the risk of sounding like a Scenix salesperson, you might want to check
out their website. They're releasing code for a full TCP/IP stack, with HTML
or SMTP support on top, for their SX48/52 processors. These are pretty much
PIC compatible, but *much* faster, and, I believe, cheaper.
The code as it stands (I believe) is intended to connect to a modem via a
PPP through software UART. I don't know how much effort it would be to add
support for an ethernet controller (eg. the 8-bit CSxxxxx-whatever it's
called).

Alternatively, as Lee says, if you have control over the server, there's no
point doing a full TCP/IP implementation... you may as well write a UDP/IP
datagram based system. An order of magnitude less complex.

Cheers,
Ben


----- Original Message -----
From: Lee Jones <lee@FRUMBLE.CLAREMONT.EDU>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Wednesday, October 13, 1999 12:30 PM
Subject: Re: Telnet/SMTP/Ethernet, Possible?


> > I would like to send & receive very basic telnet commands with
> > a pic or send periodic SMTP messages to my mail server
> > I'm wanting to deliver temperature readings from a remote location
> > in the mountains down to a control center 90 miles away which has
> > a wireless ethernet link with the site (soon to buried in the snow).
> > The only interface available is a standard ethernet hub, either
> > 10Base-2 (coax) or 10Base-T (UTP).
>
> > I may just put a cheap-o Linux server up there
>
> Frankly, for a one-off project, the non-recurring engineering to
> build all the layers of networking stack (Ethernet, IP, TCP, and
> Telnet or SMTP) just isn't worth it.  I'd go with the Linux box.
>
> If you want to do it with an embedded processor, I wouldn't use
> a low-end PIC.  The Motorola 32-bit line have some with built-in
> serial hardware that can do Ethernet (e.g. 68360).
>
>                                                 Lee Jones