Is that going to be fast enough for your application? Gerald
On Fri, Oct 11, 2013 at 5:49 AM, Alberto Potenza < [email protected]> wrote: > Hello Gerald, > I am starting to think to use the SPI approach to send data from FPGA to > BBB. > This is a completely different approach but it will allow me to boot from > the eMMC and save data in the SC. > I think that the max speed to send data should be 48 MHz (but I should > look around if it is right...if someone has it on the fingers...otherwise I > will check it...). > > Thanks for your previous answer. > > Cheers. > > > > > Il giorno giovedì 10 ottobre 2013 20:07:39 UTC+2, Gerald ha scritto: >> >> Well, the options are eMMC and SD. You could create a second SC slot on >> an expansion board, but I suspect that will be taken up by the GPMC. You >> could try SPI boot, although I have never done that, it should work. It >> will be slow, but functional. >> >> Gerald >> >> >> >> On Thu, Oct 10, 2013 at 11:45 AM, Alberto Potenza >> <[email protected]>wrote: >> >>> Dear all, >>> I need help to understand if BBB fits what I need. >>> I would like to use the BBB-GPMC bus to communicate with an FPGA (placed >>> on a custom made PCB) and save some data in the SD card. >>> In particular, I would like to send data from FPGA to BBB, have some >>> data-analysis and then save them in the SD card. >>> I would like to use GPMC bus because I need to be fast. >>> >>> Now, my problem is: how can I boot the BBB? >>> I cannot use the eMMC because I am already using the GPMC. >>> I prefer to not boot by using the same SD card that I use to save data >>> (I would like to have it independent). >>> >>> -> I could add a flash memory on the PCB hosting the FPGA and use it to >>> boot, but is there a way to do it (GPMC bus is already used and I do not >>> think that I can use another bus-type to communicate)? >>> -> I could add an SD card on that PCB but is there a way to save data on >>> that SD card (again, GPMC bus is already used and I do not know if I can >>> use SPI to save directly in the SD)? >>> >>> >>> Any idea is really appreciated. >>> >>> Thanks. >>> >>> Alberto >>> >>> >>> -- >>> 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 beagleboard...@**googlegroups.com. >>> >>> For more options, visit >>> https://groups.google.com/**groups/opt_out<https://groups.google.com/groups/opt_out> >>> . >>> >> >> -- > 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/groups/opt_out. > -- 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/groups/opt_out.
