From andreic at chichak.ca Thu Dec 28 13:35:53 2006 From: andreic at chichak.ca (Andrei Chichak) Date: Thu, 28 Dec 2006 12:35:53 -0700 Subject: [Efi332] ITC and PMA/PMM timing relationship. Message-ID: <20061228193553.D30FTGGVEN@priv-edtnaa06.telusplanet.net> Hi all, I seem to be having a bit of problem getting synchronization when using ITC and PMM. My signal source sends out a pulse to the ITC channel just before the missing tooth event on the PMM channel. Does the '332 expect the ITC pulse to span the missing tooth event? How early does the ITC pulse leading edge need to happen? How late does the ITC pulse falling edge need to be? Thanks, Andrei ------------------------------ Andrei Chichak 4024-120 Street Edmonton, Alberta Canada T6J 1X8 (780)434-6266 Lat: 53? 28' 40" N Lon: 113? 32' 27" W From bowtievette at aol.com Fri Dec 29 13:23:10 2006 From: bowtievette at aol.com (bowtievette at aol.com) Date: Fri, 29 Dec 2006 14:23:10 -0500 Subject: [Efi332] ITC and PMA/PMM timing relationship. In-Reply-To: <20061228193553.D30FTGGVEN@priv-edtnaa06.telusplanet.net> References: <20061228193553.D30FTGGVEN@priv-edtnaa06.telusplanet.net> Message-ID: <8C8F995E95E3BD0-9FC-5213@webmail-da12.sysops.aol.com> Hi Andrei, My experience is all with PMMX?, PSP? etc, I assume that is what you are using. By "sycnchronization" I assume you mean you are having trouble getting PMMX's 720 degree counter to respond properly to your cam synch signal (and adjust its counter to align with the position in the engine cycle) and not PMMX's 58xx crank wheel pattern synching. I assume that your PMMX is synching up fine to the crank 58xx pulsetrain. When I was using the 720 degree configuration (I just use the 360 degree counter now), I was sending the cam sync HSR a few teeth prior to the gap. I don't think its critical at all where, but there is alot more going on in the PMMX function during the missing gap and perhaps there is something in there that prevents the counter adjustment from working properly during this period. I don't recall having any issues getting it to work outside the gap. As far as the ITC pulse duration goes, that should not matter. Its a two part deal to get this to work. First, cam synch is sensed by ITC on either the leading or trailing edge depending on how it is configured. As long as ITC "sees" the transition, the duration or location of the pulse preceding or following should not matter to it. Also, you must have ITC configured to generate an interrupt at this event. The second part of the job is for the ISR to then issue the HSR to PMMX to reset its tooth counter according to the formula shown in the documentation. ITC and PMMX are not formally linked by any other mechanism other than the CPU responding to the interrupt. HTH, jc -----Original Message----- From: andreic at chichak.ca To: efi332 at diy-efi.org Sent: Thu, 28 Dec 2006 2:35 PM Subject: [Efi332] ITC and PMA/PMM timing relationship. Hi all, I seem to be having a bit of problem getting synchronization when using ITC and PMM. My signal source sends out a pulse to the ITC channel just before the missing tooth event on the PMM channel. Does the '332 expect the ITC pulse to span the missing tooth event? How early does the ITC pulse leading edge need to happen? How late does the ITC pulse falling edge need to be? Thanks, Andrei ________________________________________________________________________ Check out the new AOL. Most comprehensive set of free safety and security tools, free access to millions of high-quality videos from across the web, free AOL Mail and more. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.diy-efi.org/pipermail/efi332/attachments/20061229/0cb79fd9/attachment.html From andreic at chichak.ca Sat Dec 30 00:58:37 2006 From: andreic at chichak.ca (Andrei Chichak) Date: Fri, 29 Dec 2006 23:58:37 -0700 Subject: [Efi332] ITC and PMA/PMM timing relationship. In-Reply-To: <8C8F995E95E3BD0-9FC-5213@webmail-da12.sysops.aol.com> References: <20061228193553.D30FTGGVEN@priv-edtnaa06.telusplanet.net> <8C8F995E95E3BD0-9FC-5213@webmail-da12.sysops.aol.com> Message-ID: <20061230065838.D0TMXQ7S3C@priv-edmwaa05.telusplanet.net> At 12:23 PM 12/29/2006, you wrote: > >Hi Andrei, > >My experience is all with PMMX?, PSP? etc, I >assume that is what you are using. No, I assembled the "A" series microcode and am using the stock ITC PMM and PSP routines. >By "sycnchronization" I assume you mean you are >having trouble getting PMMX's 720 degree counter >to respond properly to your cam synch signal >(and adjust its counter to align with the >position in the engine cycle) and not PMMX's >58xx crank wheel pattern synching. I assume that >your PMMX is synching up fine to the crank 58xx pulsetrain. I think I have it working now, I have some more testing to do. I would achieve sync, but then would loose sync. It turns out that the ITC interrupt routine should switch one of the parameters from #teeth to (2*#teeth)+1. I missed the +1. I think the answer is that the cam signal will cause the ITC routine to generate an increment and interrupt on the leading edge, so it really doesn't matter when it happens as long as it happens before the missing tooth. >HTH, jc It did. Thanks. Andrei ------------------------------ Andrei Chichak 4024-120 Street Edmonton, Alberta Canada T6J 1X8 (780)434-6266 Lat: 53? 28' 40" N Lon: 113? 32' 27" W From bowtievette at aol.com Sat Dec 30 11:19:34 2006 From: bowtievette at aol.com (bowtievette at aol.com) Date: Sat, 30 Dec 2006 12:19:34 -0500 Subject: [Efi332] alternate processors In-Reply-To: <20061230065838.D0TMXQ7S3C@priv-edmwaa05.telusplanet.net> References: <20061228193553.D30FTGGVEN@priv-edtnaa06.telusplanet.net> <8C8F995E95E3BD0-9FC-5213@webmail-da12.sysops.aol.com> <20061230065838.D0TMXQ7S3C@priv-edmwaa05.telusplanet.net> Message-ID: <8C8FA4DCF9AAAF8-9FC-6A34@webmail-da12.sysops.aol.com> I came across some mention of the "bigstuff3" controller and saw that he is using an Infineon TriCore processor. Is there anyone on this list who has worked with these? Or for that matter anything non-Freescale? Just curious to hear feedback relative to Freescale offerings. ________________________________________________________________________ Check out the new AOL. Most comprehensive set of free safety and security tools, free access to millions of high-quality videos from across the web, free AOL Mail and more. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.diy-efi.org/pipermail/efi332/attachments/20061230/a02e28fd/attachment.html From Steve.Ravet at arm.com Sun Dec 31 17:20:17 2006 From: Steve.Ravet at arm.com (Steve Ravet) Date: Sun, 31 Dec 2006 17:20:17 -0600 Subject: [Efi332] test, please read Message-ID: It seems that the guy that hosts diy-efi.org let the domain expire and someone else has taken it. Not sure what the implications are but I think the lists should still be working. If you don't get this email, then that means they aren't working. --steve ------------------- Steve Ravet ARM steve.ravet at arm.com