DCC in PBP

[mackrackit]

Sounds like a low voltage X10?

Here is some info.
http://davehouston.net/

[boroko]

Like X-10 in as far as power line comm, but instead of imposing a signal on a carrier, the supply is kind of FSK (freq shift key) of the supply power. Seems very robust. on model trains, remember that the contact is by wheels, often on dirty track. Difficult at best.
Bo

[boroko]

BTW,

Alain:
MERG is an excellent resource for such things. I'm building a MiniDCC as a base to start testing. (I will have to get back into Model Railroad, so it will have a use after testing). The problem is that it is so well done, no one had needed to write in PBP, they just use it.

Dave:
Thanks for the link to your site. Very nice info, I will mine it further. Maybe tune up my X-10 system.

bo

[mackrackit]

Dave:
Thanks for the link to your site. Very nice info, I will mine it further. Maybe tune up my X-10 system.

I was meaning your yard light system would be like X10. Modulating a signal over DC like the trains should be pretty easy. But that was only an example... right?

And the site I linked to is a different Dave.

[malc-c]

Not sure if this is any help

http://www.trainelectronics.com/miniDCC/index.htm

It has some code and the site is about DCC

[Acetronics2]

Hi, Boroko

I found this tutorial ...

In French, ... yes, FreeBasic, yes ... but everything needed explained .

http://www.train35.com/dcc1.html

And easy to port to pbP !

Alain

[boroko]

Thanks Alain for the suggestion. I will look and see what I can learn from there.

Current plan is to use DT-Ints to capture and measure the width of the incoming pulses to determine weather they are short (58uS :"1") or long (100uS: "0") or standard AC power (16.7mS) and generate a level of 1 or 0 if it is data. If Std. AC I can jump to a fall-back and pick one of a few basic modes by cycling the power. The data pulses, once decoded, could be simply fed into the USART.