Yes, it is possible to have duplicate serial numbers. I am not aware of any SW that runs ion the board that uses that information. Every processor has a unique ID that is better suited for tracking different boards.
Serial numbers are for manufacturing use and as it contains a manufacturers information, that should be adequate, but then again it is not 100% fool proof. If people are just making clones of the board and selling it as a BeagleBone Black clone and being sold as the real thing, then we will be able to detect that pretty quickly. Gerald On Wed, May 13, 2015 at 10:02 AM, Joshua DeWeese <[email protected]> wrote: > My apologies. I had an out-of-date SRM (A4) I have what I think is the > newest SRM (C1), and I do see that it has the table of addresses/lengths > that I was missing. I'm talking about the EEPROM onboard the BBB, not the > cape's EEPROMs. > > I didn't expect that anyone is enforcing valid EEPROM's as it is an open > design after all, but I just don't see any provision to avoid serial number > duplicates for those who wish to do so. Am I still missing something? I > don't see anywhere to encode the manufacturer's name in the EEPROM. Is > there some other way for manufacturer's to co-operatively assign unique > numbers? > > > On Wednesday, May 13, 2015 at 9:59:54 AM UTC-4, Gerald wrote: >> >> What sort of EEPROM layout are you looking for? The tables in the SRM >> show the address and the data. Not sure what more you need. >> >> Yes, the serial numbers could be the same, but there is code in there for >> manufacturers information. We are not in the business of policing what >> people do with this design in their products. It is up to them to handle >> that. >> >> Gerald >> >> >> On Wed, May 13, 2015 at 8:53 AM, Joshua DeWeese <[email protected]> >> wrote: >> >>> Looking at the BeagleBone's SRM, I see that the contents of the board's >>> EEPROM are well defined (Board ID, Version, etc). The BeagleBone Black's >>> SRM, doesn't say anything about the EEPROM's layout, but looking at the >>> contents of some of my boards, it seems to follow the same spec with a few >>> changes. Is there a spec. for the BBB's EEPROM somewhere out there? >>> >>> I also see that the serial number programmed into the EEPROM is >>> basically just the year, week, some constant ASCII characters and then an >>> index that (I assume) resets to 0 at the beginning of each week. This makes >>> since if there was only one manufacture building the bones, but since it is >>> open source, there could be theoretically many people building them. >>> Wouldn't this lead to many boards that have identical serial numbers? >>> >>> -- >>> For more options, visit http://beagleboard.org/discuss >>> --- >>> You received this message because you are subscribed to the Google >>> Groups "BeagleBoard" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> >> >> -- >> Gerald >> >> [email protected] >> http://beagleboard.org/ >> http://circuitco.com/support/ >> > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- Gerald [email protected] http://beagleboard.org/ http://circuitco.com/support/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
