Hey There, I'm running BeagleBone Black Rev C. I have developed my own custom cape, it is using the following IO-pins:
BBB-header no BBB GPIO no P9_42 7 P9_18 4 P9_17 5 P9_15 48 P9_28 113 P9_23 49 P9_31 110 P9_12 60 P9_29 111 P9_27 115 P9_25 117 I have developed a device tree overlay, that's declaring all the pins as GPIOs, and I have set all pins to output with value 0. Other than that am I using the VDD_3V3 and VDD_5V. When I put the cape on, I get some error mesaages on dmesg: [ 159.482950] mmcblk0: error -110 sending status command, retrying [ 159.489379] mmcblk0: error -110 sending status command, aborting [ 159.495725] end_request: I/O error, dev mmcblk0, sector 497760 At this point I can still type in some simple commands to the commandline (such as ls and cd) but more demanding commands fails (such as top and shutdown), it gives me an I/O error. So it seems that the MMC-card for some reason is unreachable. The cape doesn't seem to affect the supply voltage, is was measured on VDD_3V3 (P9_3) to be 3,15V both before and after I put the cape on. Does anybody have any clues, or any suggestions to how I could do further debugging? Thanks :) -- 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.
