Jim, Where do you get your X10 modules from? I can't seem to find them in Malaysia. Just maybe the modules that you have in UK is similar in socket size for the Malaysian wall... :) John --- Jim wrote: > My latest horror story is worse than that one > James... > > > I have been interfacing a PIC to my X10 system at > home. > I have a number of socket controllers, pendant light > controllers, RF keypad, > CM12U (uyk version of the CM11). > > Designed the Pic system, hooked it up to the CM11, > wrote some code to > "bit-bang" the bizarre protocol that X10 needs to > communicate. > > Nothing :( > > I send the bitstream and I expect the interface to > respond by raising RI > (Ring indicator) on the serial port. Nothing. > > Scope out from the attic. No movement on RI. > > Check the PIC is sending by hooking up to a bunch of > LEDs, 100% code check > ok. Still nothing. > > > 2 days later. Think that the UK version of the > interface is different to the > USA version. - I mean after all the RJ11 connector > is wired differently... > hmmmm > > Ok -lets check versions/types/serials. Ok my CM12U > 240v is not responding to > the X10 TW523 command I am sending to it. > > main match I found > said (almost verbatim) > > Be careful.. The CM11 (CM12U in Europe) is NOT the > same as a tw523. > The 523 is dumb and just sends data on the 0 > crossing of the mains. Whereas > the CM11/12 has a pic processor converting the > interface (RS232 @ 4800 > baud). > > > DOH > > Ok change the code (in C so easier to do than ASM). > Hmmm still not working > at end of evening 3. > > Aha ! I am still interfacing at TTL levels, we are > now RS232. > > Hmm data going out - AND readable on PC serial port. > But no X10 control. > > Ah, that will be the *very* out of date and > incorrect documentation I was > working to. > > Google rocks my world again. > I have X10 control now, power off and on requires a > reset of the clock, and > a non pc controlled status change on any X10 device > tells me about it too - > I didn't expect that to happen. > > Finally, I found out that the Checksum doesn't > always make it to the PC :( > So timeouts and re-transmissions galore - but hey, > it works! > > > > > > -----Original Message----- > From: piclist-bounces@mit.edu > [mailto:piclist-bounces@mit.edu] On Behalf Of > James Newton, Host > Sent: 05 April 2007 22:01 > To: 'Microcontroller discussion list - Public.' > Subject: RE: [BUY] Help with microSD or SD card > interfacing > > > From: James Newton > > Sent: 2007 Mar 30, Fri 09:43 > > > > I'm quite a few hours into attempting to connect a > microSD > > (aka TransFLASH) card to an MSP430F1611 and I'll > be damned if > > I can get any response back from the card. > > > > I've read the datasheets, I've read the many > available web > > pages on the subject, I've checked, re-checked, > double > > checked and had others check the connections, and > I'm looking > > at the signals I'm putting out on a logic analyzer > and they > > are dead on exactly what is called for. And there > is NO > > response from x4 cards. > > > I'm going to do what is good for the soul here and > admit what the actual > problem turned out to be. The spec calls for 4 bytes > of argument to be sent > between the command and the CRC. I was sending 3 > bytes. > > I'm not sure how many times I checked the analyzer > display against the spec, > but it must have been 50 or more times. Didn't see > that (obvious) difference > every single time. Another guy looked at it and said > "hey, doesn't that say > 4 bytes? This looks like 3 to me..." > > Whereupon I said "No fxxking WAY!", changed the > code, ran it and completely > freaked out when the card responded. > > I'm not charging the client for about 2 days of > otherwise billable time. > Some times I think it's a good thing I have a day > job. Sigh. If it wasn't > for the fact that in the past I've pulled many a > project out of the toilet > and saved more than a few other peoples bacon from > the fire, I would quit > doing this sort of work. > > Another point is that I have got to get a new unit > that can export images of > the signals so that I can post them for other people > to look at. > > --- > James Newton: PICList webmaster/Admin > mailto:jamesnewton@piclist.com 1-619-652-0593 phone > http://www.piclist.com/member/JMN-EFP-786 > PIC/PICList FAQ: http://www.piclist.com > > > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > > > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > ____________________________________________________________________________________ Need Mail bonding? Go to the Yahoo! Mail Q&A for great tips from Yahoo! Answers users. http://answers.yahoo.com/dir/?link=list&sid=396546091 -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist