How to RECIEVE signals from X10?

GICU812

There are dozens of examples on how to send X10 signals with a Stamp, does anyone know how to recieve them? I have a PSC05

Its 445 AM, Ive been working on this since like 10PM. I just dont see it happening with my abilities. I THINK there is a zero cross signal every ~8ms (which would coencide with 120hz, which is how many times a 60hz signal crosses 0 volts)
From what I've read, there is supposed to be a 1ms pulse at the start of each zero cross signal for "1", and the lack of a pulse for "0"

I just cant seem to nail it down.

Best Ive gotten was to take and drop in 32 bits right after I see something happen on the line, then debug out the bits

I can for the most part make that work, One byte is always the same for "on" or "off", and another byte always seems to refrence the unit number, but 6 and 8 look the same, and from what I know about the X10 code, 1 on and 1 off should be two completely diffrent bit sequences, not 1 be there, then on or off,

Anyway, what I can debug out of it, makes no sense to me, but I could just match the hex value against a table I make by seeing what comes out when I hit what button, but that seems very sloppy to me, and im sure there must be a better way.

I guess I will break out the oscope tomorrow if no one has any advice, but at this point, im ready to just say screw it and use someone else's previous suffering.

GICU812

GAHAHHHHH!!!!

This is truely maddening...

Of course, I had to change it to run in a pollmode, so I can actually do something with the stamp, that changed the timing, now I have to find a way to tweak the timing so I can get repeatable output again..

PLEASE?!?! anyone? any ideas?

GICU812

Well, if you're not going to help, you'll have to listen to me talk out loud.
I think what is going on is the PSC05 is sending 2 data packets


Turn module 1 on
1110-0110-01100
1110-0110-00101
Turn module 1 off
1110-0110-01100
1110-0110-00111

1110 is the "start code"
0110 is the house code A
01100 is the code for unit 1
00101 is the code for on
00111 is the code for off

Right now im getting (DEC) 62 , 56 for 1-on and (DEC) 62, 184 for off
so that is (finally a good use for my CCNA)
00111110 00111000 (one on)
00111110 10111000 (one off)

Cant say that really makes a lick of sense... I can accept im probably missing most of the preamble, and maybe even some of the house code, but the ends should line up.

Post Edited (GICU812) : 10/19/2008 5:28:29 AM GMT

GICU812

Splitting it up to make it easier to read.
2 on 54, 56 and 2 off, 54,184
Unit 3 is 46, same off and on codes

Transmitted (according to documentation)
Unit1 -01100
Unit2 -11100
Unit3 -00100

Recieved
Unit1 -00111110
Unit2 -00110110
Unit3 -00101110

Doesnt make a lick of sense to me.

Relevant links.
http://www.x10pro.com/pro/pdf/technote.pdf
http://media.wiley.com/product_data/excerpt/68/07645795/0764579568.pdf

GICU812

Or.... I could just not be a moron, and order the CM11a, which uses standard serial protocol, and pulls a line high when it has data to transmit, so it takes care of the polling for me.

So, I think I'll just order one of those. Wish I would have seen that BEFORE I spent 12 hours working with this. The PSC05 would probably work great for using the xout commands, but I dont see it working for input, unless you can figure out how to synch the input.

Bruce Bates

GICU812 -

Your interpretation 2 messages back is right on the money, and in accordance with the X-10 codes list on Page 5 of the Technote PDF. What seems to be the problem?

Regards,

Bruce Bates

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When all else fails, try inserting a new battery.

lenswerks

Take a look at the Micromint serial PLIX chip. I've used the parallel PLIX many times in the past with Parallax Stamps·and now they·have·a serial version - 19$.

Check it out - http://www.micromint.com/datasheets/serplix.pdf