Also, at POR, it would help to understand at which point the USR LEDs( all 4 at once ) come on, then go off again.
I'm assuming this is not done in uboot, but I really do not know. On Wed, Dec 2, 2015 at 4:19 PM, William Hermans <[email protected]> wrote: > If the software is locked up, the USR LEDs would not cycle as if the > system is attempting to restart. > > On Wed, Dec 2, 2015 at 4:08 PM, John Syne <[email protected]> wrote: > >> From what Gerald said previously in this thread: >> >> "The reset is an input pin read by the processor, not actually a HW power >> reset. If the SW is locked up, this could happen.” >> >> Regards, >> John >> >> >> >> >> On Dec 2, 2015, at 2:55 PM, William Hermans <[email protected]> wrote: >> >> If the board was in sleep, then why wont the reset button reset ? Passed >> that, why would the USR cycle( flash on then off ) then nothing ? >> >> On Wed, Dec 2, 2015 at 3:47 PM, John Syne <[email protected]> wrote: >> >>> Sounds to me that like BBB has gone into sleep mode and there is no >>> trigger to wake it up. Is there a way to measure the current consumption? >>> >>> Regards, >>> John >>> >>> >>> >>> >>> On Dec 2, 2015, at 2:40 PM, William Hermans <[email protected]> wrote: >>> >>> One more thing of note. I do not run systemd - Ever. I run SYSV as an >>> init daemon. I only mention this as I think Robert said something about >>> systemd lessening this issue. >>> >>> On Wed, Dec 2, 2015 at 3:36 PM, Gerald Coley <[email protected]> >>> wrote: >>> >>>> Hmm, not sure what is going on. Sounds like the processor has stopped >>>> running the code and halted but it forgot to turn off the lights. >>>> >>>> Gerald >>>> >>>> On Wed, Dec 2, 2015 at 4:26 PM, William Hermans <[email protected]> >>>> wrote: >>>> >>>>> Gerald, it's like the board hangs at power down, but I can not be 100% >>>>> sure. The reason why I "assume" it's at power down, is that the heartbeat >>>>> blink stops, but the rest of the LEDs stay on, and the ethernet port light >>>>> still blinks. >>>>> >>>>> The board I experienced this on last night is an Element14 RevC, but I >>>>> do also have a circuitco A5A that exhibits the same thing. >>>>> >>>>> On Wed, Dec 2, 2015 at 3:22 PM, Gerald Coley <[email protected]> >>>>> wrote: >>>>> >>>>>> Is this on power up or is this state happening some time later? If it >>>>>> is on power up, then the power supply most likely is the issue based on >>>>>> the >>>>>> ramp requirements of the PMIC. >>>>>> >>>>>> If the power LED is on, then the PMIC is on and ramped up. That is >>>>>> why I asked for the voltages. >>>>>> >>>>>> It also could be a boot pin read issue where it misreads the boot >>>>>> pins. If that is the case you should see that from the serial port. >>>>>> >>>>>> Gerald >>>>>> >>>>>> >>>>>> On Wed, Dec 2, 2015 at 4:15 PM, William Hermans <[email protected]> >>>>>> wrote: >>>>>> >>>>>>> For what it's worth Gerald, this happens with nothing connected to >>>>>>> the board as well. This just happened to me last night after issuing a >>>>>>> reboot command from the command line. >>>>>>> >>>>>>> I remember at some point you all were talking about something about >>>>>>> the "ramp time" of the PMIC or something. >>>>>>> >>>>>>> On Wed, Dec 2, 2015 at 3:11 PM, Gerald Coley <[email protected] >>>>>>> > wrote: >>>>>>> >>>>>>>> I would start with your cape design and try and rule that out first. >>>>>>>> >>>>>>>> The reset is an input pin read by the processor, not actually a HW >>>>>>>> power reset. If the SW is locked up, this could happen. >>>>>>>> >>>>>>>> If you hold the power button for a 8 seconds or more the board >>>>>>>> should power cycle. >>>>>>>> >>>>>>>> When it is in this state, what do the voltages read? >>>>>>>> >>>>>>>> Gerald >>>>>>>> >>>>>>>> >>>>>>>> On Wed, Dec 2, 2015 at 3:54 PM, Jonathan Ross < >>>>>>>> [email protected]> wrote: >>>>>>>> >>>>>>>>> Once in a blue moon one of my beaglebones will get into a state >>>>>>>>> where it has power (the power LED is lit), but it is not booted. >>>>>>>>> Normally >>>>>>>>> this would be fine, just hit the power button to reset. But in this >>>>>>>>> weird >>>>>>>>> state the power button does nothing. The reset button does nothing. >>>>>>>>> I checked the power and reset button pins on the header, the power >>>>>>>>> was low, the reset was high. >>>>>>>>> The only way to get the board out of this state was to pull the 5V >>>>>>>>> power. >>>>>>>>> I'm using a KL16 on a cape to do a watchdog on the BB, and reboot >>>>>>>>> it via power and/or reset buttons on the header if the BB stops >>>>>>>>> sending >>>>>>>>> checkins over uart. This has been working great, except for the rare >>>>>>>>> case >>>>>>>>> where the board ends up in this state where the power and reset >>>>>>>>> buttons are >>>>>>>>> not functioning. >>>>>>>>> Any ideas how the BB could get into this state, and if there's any >>>>>>>>> other way to force a reboot other than physically pulling the 5v >>>>>>>>> power? >>>>>>>>> Thanks, >>>>>>>>> JR >>>>>>>>> >>>>>>>>> -- >>>>>>>>> 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. >>>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> -- >>>>>>>> Gerald >>>>>>>> >>>>>>>> [email protected] >>>>>>>> http://beagleboard.org/ >>>>>>>> >>>>>>>> -- >>>>>>>> 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. >>>>>>>> >>>>>>> >>>>>>> >>>>>>> -- >>>>>>> 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. >>>>>>> >>>>>> >>>>>> >>>>>> >>>>>> -- >>>>>> Gerald >>>>>> >>>>>> [email protected] >>>>>> http://beagleboard.org/ >>>>>> >>>>>> -- >>>>>> 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. >>>>>> >>>>> >>>>> >>>>> -- >>>>> 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. >>>>> >>>> >>>> >>>> >>>> -- >>>> Gerald >>>> >>>> [email protected] >>>> http://beagleboard.org/ >>>> >>>> -- >>>> 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. >>>> >>> >>> >>> -- >>> 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. >>> >>> >>> >>> -- >>> 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. >>> >> >> >> -- >> 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. >> >> >> -- >> 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. >> > > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. 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