hi,

i just wish to get some advice on what should i do now.

I m having an embedded web project.

i only got 4 weeks time left.

but my progress is very slow. i 've only developed a User Interface on client, a EKG circuit (without filter). i 've spent most of my time to understand the TCPIP stack.

When i started to write the TCPIP stack code, i realised that i need a proper NIC driver to do so. The RTL8019 driver comes with CCS has some problems....

worst still, the NIC is surface mount type. It can't be done by hand-soldering.

I am panic now. I am very upset now, because I have put my effort on it for 4 months already.

 

The following is just an opinion, but you asked for advice

It wouldn't hurt to look at using some off-the-shelf solutions, especially if you're pressed for time. This makes a lot of sense when you're designing prototypes. The time you save by not having to "re-invent the wheel" at every step more than makes up for the small expenses involved. From your posts, it sounds like you're a little out of your depth on this project, so why try to design everything from scratch?

An article by Peter Best in the January issue of "Nuts & Volts" describes a simple ethernet transceiver design based on a 16F877 PIC and a RTL8019AS controller. http://www.nutsvolts.com/toc_Pages/jan04toc.htm (note: it looks like the code uses UDP, a simpler protocol than TCP/IP) http://www.freesoft.org/CIE/Topics/85.htm

The ethernet parts and code can be found here: http://www.edtp.com

Even if it doesn't solve your entire problem, at the very least, the "EDTP Packet Whacker" can serve as a thru-hole adapter for the RTL8019AS (Any NIC chip you find will be surface mount). Best & EDTP did a nice job of taking a fairly complex topic and making a manageable project out of it. You might consider building off their efforts, if saving time is your main concern.

 

Thanks Laroche! You does help me a lot!
I have ordered an edtp packet whraker just now!

I can concentrate on my C programming now