OK. It is confirmed. You are using the pins that go to the onboard eMMC. 1) Disable eMMC in the UENV.TXT file 2) Only boot from uSD. 3) Make sure the FPGA does not drive those pins until cleared by the processor, after the eMMC has been reset.
Gerald On Wed, Nov 13, 2013 at 10:07 AM, Alberto Potenza < [email protected]> wrote: > Hi, > look it is an home made board using a De0 (Altera) on the other side (see > attachment): > on the BBB side I connect gpmc_ad0 -> gpmc_ad15 > gpmc_clk > gpmc_a0 -> gpmc_a10 > gpmc_wait0 > gpmc_dir > > spi0_sclk,spi0_d0,spi0_d1,spi0_cs0 > > spi1_sclk,spi1_d0,spi1_d1,spi1_cs0,spi1_cs1 > I am using a pin-to-pin connection (one wire starting from a pin going > directly in another pin on the other side). > On the FPGA side I am using GPIO0_D0 -> GPIO0_D31, GPIO1_D0 -> GPIO1_D31 > (I do not use GPIO_CLK and GPIO supply). > Pins unused are floating (no wire between the boards). > In the second file (Connection.png) I made a (really really bad) example > of some pins connected together (it is just to give you an idea....if you > need something better with all connections, I'll do it). > > Thanks a lot for your help. > > Alberto > > > I > > -- > 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.
