Re: [beagleboard] Use SD card to save data and also GPMC bus

2013-10-14 Thread Alberto Potenza
Dear Gerald, once again you are right: I should not use the word high so easily. By the way, thanks again for your help. Alberto Depends on your definition of HIGH. GPMC is 100MHZ and up to 16Bits wide. Gerald On Fri, Oct 11, 2013 at 9:58 AM, Alberto Potenza

Re: [beagleboard] Use SD card to save data and also GPMC bus

2013-10-14 Thread Alberto Potenza
Dear Gerald, I was reading again your answers and there are some points not fully clear. In the BeagleBone Black System Reference Manual there is written: GPMC bus may NOT be available due to the use of those signals by the eMMC. (pag. 37). At pag. 61 there is a schematic view of the

Re: [beagleboard] Use SD card to save data and also GPMC bus

2013-10-14 Thread Alberto Potenza
Dear Gerald, thanks a lot for your help: it is really useful for me to have you on the other side. Maybe I'm begginning to see the light (as Duke Ellington said...). Now, this point is not clear to me: Now, if we take again the BeagleBone Black System Reference Manual at pag.82 there is

Re: [beagleboard] Use SD card to save data and also GPMC bus

2013-10-11 Thread Gerald Coley
Depends on your definition of HIGH. GPMC is 100MHZ and up to 16Bits wide. Gerald On Fri, Oct 11, 2013 at 9:58 AM, Alberto Potenza alberto.potenz...@gmail.com wrote: Look, I should have 32-bit data generated with a frequency f =100kHz. Which means a data throughput of 3.2Mb/s. With SPI I

[beagleboard] Use SD card to save data and also GPMC bus

2013-10-10 Thread Alberto Potenza
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

Re: [beagleboard] Use SD card to save data and also GPMC bus

2013-10-10 Thread Gerald Coley
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,