Thanks guys. I will not be driving anything at boot, as all the cape pins are initially configured as inputs.
Surprisingly, I did read sections 6.7 and 8.3. It would have been nice if the P8 pins had been referenced in those diagrams, rather than having to trace the schematics. mike On Saturday, September 5, 2015 at 7:44:02 AM UTC-6, Charles Steinkuehler wrote: > > On 9/4/2015 10:35 PM, rattus wrote: > > Just want to verify something... I an *not* using HDMI, McASP, gpmc, > UARTs, > > the ADC or I2Cs. I am using the EMMC. Just SPI0 and a bunch of GPIOs. > > > > Can I assume that any P8/P9 pins labeled as GPIO in some mode, and *not* > > labeled "allocated for EMMC2"* on Derek Molloy's helpful P8/9 charts is > > available for GPIO purposes? > > > > Are there any other preallocated P8/9 GPIO-potential pins I need to > watch > > out for? Just checking before I commit the cape from Hell to fab. > > In addition to not driving the boot pins while reset is asserted > (unless you're intentionally trying to change the boot mode), you also > need to watch out for the cape EEPROM I2C lines (P9, pins 19 and 20). > These pins will be in I2C mode at boot-up, and will be twiddled by > the cape manager as it looks for any connected capes. > > -- > Charles Steinkuehler > cha...@steinkuehler.net <javascript:> > -- 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+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
