Using the Arduino Ethernet shield with AMICUS18 (Joint forum project?)

[HenrikOlsson]

Hi,
Just thought I'd give those with interest in this project a short update of what I've been doing.

Take a look at the following screenshot:



The screenshot itself is pretty self explainatory but I'll do a short explanation of what is happening (it's quite a bit).

At bootup the DHCP code is executed to retrieve the network parameters from the DHCP server, then the W5100 is configured with those parameters. Then the SNTP code is executed to retrieve current time from an SNTP server on the net. Then a series of DNS queries are run, looking up the IP-adress of some well known URL's. The last URL that DNS queries is the SMTP server for my email account. Once it gets that IP-adress it uses it in the SMTP code to login to my account, using authentication (no encryption just AUTH LOGIN (BASE64 encoded username and password)), and sends an email to my account - which you can see next to the serial terminal.


There is one thing I don't get though. Browsing to to the IP-adress retrieved by the DNS code gets me to the correct places in all but ONE instances, namely THIS SITE. If I PING www.picbasic.co.uk I get the same IP as my DNS code and if I run Wireshark and browse to www.picbasic.co.uk its DNS-records shows the same IP-adress but if I browse to that very same IP I do not end up here. I'm pretty sure it's not an error in my code since every other URL I've tried seems to work. It has to be something specific with where and how this site is hosted. Anyone know, and can explain, what's going on?

Anyway the DNS code currently "only" handles normal queries, not reversed or any other type, like MX etc. It does handle both direct type A responses and CNAME responses, either single or "nested". For example, the query for microsoft results in a response with no less than three CNAME records (aliases) before finally arriving at the IP-adress shown.

That's it, just wanted to show you what's going on at my end. If anyone else is doing anything cool, please tell!

/Henrik.

[mackrackit]

It has to be something specific with where and how this site is hosted. Anyone know, and can explain, what's going on?

Shared/virtual machine/site.

[Bluecoal]

Henrik, have you been able to work on this project any more?

john

[HenrikOlsson]

Hi John,
Yes, a little bit. I've been working on external SPI flash routines for storing HTML-data and use "dynamic variables" in the HTML. This now works fairly well and I'm working on a way to use MPFS2 images. As it stands I can read the FAT table and access the files alright but I'm trying to figure out the correct/best way to have more than one file open at a time. I tend to be a bit (perhaps a bit too) conservative when it comes to using RAM and I try to make the most out of it. Having multiple file "open" seems to be quite a hog in that respect but perhaps I'll just have to accept that and just get it working.

(It would be nice to have proper functions and local variables in PBP)

Is there anything in particular you're trying/want to do or thinking about?

/Henrik.

[Bluecoal]

I have done a couple small projects for fun but always wanted to do that self made home security/automation system. I know, I know, there are plenty of companies selling them and a few home brew projects. The general operation of the pieces are the easy part. The missing part is web interface for setting up the system and monitoring remotely.

I purchased a Netburner kit but decided it would be nicer if it could be a complete PBP project and not a mix. Then my 2 and 4 year old boys decided to put the project on hold a year ago....

I have been following this thread closely. Your work is very impressive.

Thank John

[Bluecoal]

Henrik,

Would you mind sharing your code through your Oct 25th 2011 post (or after) that included SMTP and SNTP. I would like to start working on sending simple variables and I/O status between two modules and your code around that point really would be a great starting point for me.

John

[HenrikOlsson]

Hi John,
Sorry for the late reply. It's not really ready for "release", it needs some proper documentation and I've found making posts here is not the way. I'll need to put in a pdf and host it where I've got control over it - not enough time but I'm getting there.

Are you going to email the variables etc between the two units or why do you want/need SMTP? The core functionallity is already posted.

Finally, which version of PBP do you have? I'm asking because the code requires PBP3 due the conditional compilation statements thru out.

/Henrik.