New to BBB but experienced with embedded systems. I'm working on a project using the BBB. Supplying +5V (up to 3A) directly to the pins on P9 from a quality bench supply. I've found that briefly switching the +5V supply OFF and then back on can pretty reliably leave the BBB in an odd state characterized by... a) No LEDs on b) Very little current drawn from supply (10mA or less) c) +5 present on P9.5 and P9.6 d) 0.687V on P9.7 and P9.8 ( should be SYS_5V ). e) P9.9 = 3.57V f) P9.10 = 0V
I've found that once the system is in this mode no amount of pressing/holding the momentary BBB pushbuttons will get the system working again. Removing input power, waiting 10 sec or so, then restoring power will get things working again. Has anyone else seen this? It seems sort of like an issue with the TPS65217C chip but I've not found any reported errata on that part. Thanks Jim -- 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.
