As long as there is nothing that can cause the PMIC to shutdown before it has completed the full power up cycle we are OK. It is the sitting down before that process has completed is what concerns me.
Gerald On Monday, November 17, 2014, Bremenpl <[email protected]> wrote: > This functionality is actually very good for me. I was intending to make > a system that prevents user from turning off BeagleBone Black without > proper shutdown. I thought i will have to implement this in code, but since > the BeagleBone Black is shutting down automatically after the main supply > is down (running on the battery in that time) i dont have to do this on my > own. Please correct me if I am wrong in understanding this. > > W dniu 2014-11-17 o 12:44, Gerald Coley pisze: > > I can accept that. This woul be only for non battery operation. > > Gerald > > On Monday, November 17, 2014, Bremenpl <[email protected] > <javascript:_e(%7B%7D,'cvml','[email protected]');>> wrote: > >> And also an important thing- I cannot turn on BeagleBone Black on >> battery only now. >> >> W dniu 2014-11-17 o 11:48, Gerald Coley pisze: >> >> Replace the resistor with a wire and just short it to ground. >> >> Gerald >> >> >> On Monday, November 17, 2014, Bremenpl <[email protected]> wrote: >> >>> I have tested the board again and heres what I have come to: >>> - Using meanwell 5V ac adapter works when the 10k resistor is NOT >>> soldered to battery header. If theres resistor soldered, but there is no >>> battery attached it stops working and the power led blinks all the time. It >>> really seems that the power controller is trying to switch to the battery >>> that is not there. After placing the battery everything works correct. I >>> only home it wont get discharged to fast when the board is off. >>> >>> W dniu 2014-11-14 o 16:58, Gerald Coley pisze: >>> >>> And mine. >>> >>> Gerald >>> >>> On Fri, Nov 14, 2014 at 9:50 AM, Bremenpl <[email protected]> wrote: >>> >>>> Ill get it tested, thank you. If this worked it would solve my >>>> problem. >>>> >>>> Dnia 14 listopada 2014 16:41:30 Gerald Coley <[email protected]> >>>> napisał(a): >>>> >>>>> The output voltage level is different. When the DC is contented it is >>>>> supposed to go to the DC input and go into charge mode for the battery. >>>>> Measure the output voltage of the PMIC. If it is 5V, then it is DC in. If >>>>> it is 3.7V +/- then it is running on the battery. >>>>> >>>>> Gerald >>>>> >>>>> >>>>> On Fri, Nov 14, 2014 at 9:37 AM, Bremenpl <[email protected]> wrote: >>>>> >>>>>> How can I know either it switched without taking the battery out? >>>>>> >>>>>> Dnia 14 listopada 2014 16:35:42 Gerald Coley <[email protected]> >>>>>> napisał(a): >>>>>> >>>>>>> Another test here would be to connect the battery and see if after >>>>>>> it switches to the battery if it switches back to the DC input. >>>>>>> >>>>>>> Gerald >>>>>>> >>>>>>> >>>>>>> On Fri, Nov 14, 2014 at 9:31 AM, Bremenpl <[email protected]> >>>>>>> wrote: >>>>>>> >>>>>>>> I understand, thank you for the info. I will make more attempts >>>>>>>> at monday with another bbb board. For now I have a 10k resistor on the >>>>>>>> TS >>>>>>>> pin because I intend to use the battery to. If the voltage is measured >>>>>>>> on >>>>>>>> the resistor ill swap it to lower value one. I hope ill get it working >>>>>>>> using meanwell power supply. >>>>>>>> >>>>>>>> Dnia 14 listopada 2014 16:16:30 Gerald Coley < >>>>>>>> [email protected]> napisał(a): >>>>>>>> >>>>>>>>> Not likely. As I said we need more boards that fail and the power >>>>>>>>> supply that is used with them. What I have seen is that it tries to >>>>>>>>> switch >>>>>>>>> to the battery, that is not there, for whatever reason. Theory is it >>>>>>>>> sees a >>>>>>>>> voltage drop due to the inrush limit on certain power supplies. I have >>>>>>>>> fixed this on a few boards by connecting the TS signal hard to ground >>>>>>>>> using >>>>>>>>> the battery pins on the board. >>>>>>>>> >>>>>>>>> What I see when the board "does not power up" is the PMIC >>>>>>>>> cycling on and off. You can look at the 5V output rail of the PMIC >>>>>>>>> for this >>>>>>>>> condition. >>>>>>>>> >>>>>>>>> Gerald >>>>>>>>> >>>>>>>>> >>>>>>>>> On Fri, Nov 14, 2014 at 9:03 AM, Bremenpl <[email protected]> >>>>>>>>> wrote: >>>>>>>>> >>>>>>>>>> I dont agree here, and this is the weird part. A cheap 5V wall >>>>>>>>>> plug adapter works great and a certified meanwell supply does not. >>>>>>>>>> Can it >>>>>>>>>> be a case related to linear/ switching power supply? >>>>>>>>>> >>>>>>>>>> Dnia 14 listopada 2014 16:01:26 Gerald Coley < >>>>>>>>>> [email protected]> napisał(a): >>>>>>>>>> >>>>>>>>>>> We are working on one if we can collect enough information to >>>>>>>>>>> confirm the issue. it appears to be a power supply issue that >>>>>>>>>>> creates a >>>>>>>>>>> condition that the TPS65217C does not like. If you use a good power >>>>>>>>>>> supply, >>>>>>>>>>> the issue is not there. >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> Gerald >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> On Fri, Nov 14, 2014 at 8:31 AM, Bremenpl <[email protected]> >>>>>>>>>>> wrote: >>>>>>>>>>> >>>>>>>>>>>> Is there a workaround for this? I thought that pre charged >>>>>>>>>>>> capacitors could help but in my application power to the >>>>>>>>>>>> BeagleBone Black >>>>>>>>>>>> is aplied in the same time as to the rest of the circuit. >>>>>>>>>>>> >>>>>>>>>>>> W dniu 2014-11-14 o 15:19, Gerald Coley pisze: >>>>>>>>>>>> >>>>>>>>>>>> The power management IC, TPS65217C. >>>>>>>>>>>> >>>>>>>>>>>> Gerald >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> On Fri, Nov 14, 2014 at 8:15 AM, Bremenpl <[email protected]> >>>>>>>>>>>> wrote: >>>>>>>>>>>> >>>>>>>>>>>>> What is the exact circuit that requires a fast ramp? >>>>>>>>>>>>> >>>>>>>>>>>>> W dniu 2014-11-14 o 14:48, evilwulfie pisze: >>>>>>>>>>>>> >>>>>>>>>>>>> As Gerald has said before, check the ramp up of the power >>>>>>>>>>>>> supply. >>>>>>>>>>>>> Some of the lab supplys have slow ramp ups. >>>>>>>>>>>>> Yes they are very stable and VERY good regulation but >>>>>>>>>>>>> the BBB design requires a fast ramp up supply. >>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>>> On 11/14/2014 3:03 AM, bremenpl wrote: >>>>>>>>>>>>> >>>>>>>>>>>>> Hello there, >>>>>>>>>>>>> I have a very strange problem with powering up BeagleBone >>>>>>>>>>>>> Black (rev C).... When i try to power it up from some cheap AC >>>>>>>>>>>>> adapter it >>>>>>>>>>>>> works fine, but when I connect to to my labolatory power supply >>>>>>>>>>>>> the power >>>>>>>>>>>>> LED on board is lid for a second and then doesnt power up the MCU >>>>>>>>>>>>> and turns >>>>>>>>>>>>> off intead. I have connected both supplys to osciloscope and they >>>>>>>>>>>>> are both >>>>>>>>>>>>> stable, the laboratory one even more. Why is the power controller >>>>>>>>>>>>> on the >>>>>>>>>>>>> BeagleBone Black refusing to power up the MCU when powered from >>>>>>>>>>>>> lab supply? >>>>>>>>>>>>> I have no idea what is this about. I would aprichiate any help. >>>>>>>>>>>>> -- >>>>>>>>>>>>> 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 a >>>>>>>>>>>>> topic in the Google Groups "BeagleBoard" group. >>>>>>>>>>>>> To unsubscribe from this topic, visit >>>>>>>>>>>>> https://groups.google.com/d/topic/beagleboard/xRPC_39ju9Y/unsubscribe >>>>>>>>>>>>> . >>>>>>>>>>>>> To unsubscribe from this group and all its topics, send an >>>>>>>>>>>>> email to [email protected]. >>>>>>>>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>>> -- >>>>>>>>>>>>> Bremenpl >>>>>>>>>>>>> >>>>>>>>>>>>> -- >>>>>>>>>>>>> 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/ >>>>>>>>>>>> http://circuitco.com/support/ >>>>>>>>>>>> -- >>>>>>>>>>>> For more options, visit http://beagleboard.org/discuss >>>>>>>>>>>> --- >>>>>>>>>>>> You received this message because you are subscribed to a topic >>>>>>>>>>>> in the Google Groups "BeagleBoard" group. >>>>>>>>>>>> To unsubscribe from this topic, visit >>>>>>>>>>>> https://groups.google.com/d/topic/beagleboard/xRPC_39ju9Y/unsubscribe >>>>>>>>>>>> . >>>>>>>>>>>> To unsubscribe from this group and all its topics, send an >>>>>>>>>>>> email to [email protected]. >>>>>>>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> -- >>>>>>>>>>>> Bremenpl >>>>>>>>>>>> >>>>>>>>>>>> -- >>>>>>>>>>>> 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/ >>>>>>>>>>> http://circuitco.com/support/ >>>>>>>>>>> -- >>>>>>>>>>> For more options, visit http://beagleboard.org/discuss >>>>>>>>>>> --- >>>>>>>>>>> You received this message because you are subscribed to a topic >>>>>>>>>>> in the Google Groups "BeagleBoard" group. >>>>>>>>>>> To unsubscribe from this topic, visit >>>>>>>>>>> https://groups.google.com/d/topic/beagleboard/xRPC_39ju9Y/unsubscribe >>>>>>>>>>> . >>>>>>>>>>> To unsubscribe from this group and all its topics, 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/ >>>>>>>>> http://circuitco.com/support/ >>>>>>>>> -- >>>>>>>>> For more options, visit http://beagleboard.org/discuss >>>>>>>>> --- >>>>>>>>> You received this message because you are subscribed to a topic in >>>>>>>>> the Google Groups "BeagleBoard" group. >>>>>>>>> To unsubscribe from this topic, visit >>>>>>>>> https://groups.google.com/d/topic/beagleboard/xRPC_39ju9Y/unsubscribe >>>>>>>>> . >>>>>>>>> To unsubscribe from this group and all its topics, 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/ >>>>>>> http://circuitco.com/support/ >>>>>>> -- >>>>>>> For more options, visit http://beagleboard.org/discuss >>>>>>> --- >>>>>>> You received this message because you are subscribed to a topic in >>>>>>> the Google Groups "BeagleBoard" group. >>>>>>> To unsubscribe from this topic, visit >>>>>>> https://groups.google.com/d/topic/beagleboard/xRPC_39ju9Y/unsubscribe >>>>>>> . >>>>>>> To unsubscribe from this group and all its topics, 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/ >>>>> http://circuitco.com/support/ >>>>> -- >>>>> For more options, visit http://beagleboard.org/discuss >>>>> --- >>>>> You received this message because you are subscribed to a topic in the >>>>> Google Groups "BeagleBoard" group. >>>>> To unsubscribe from this topic, visit >>>>> https://groups.google.com/d/topic/beagleboard/xRPC_39ju9Y/unsubscribe. >>>>> To unsubscribe from this group and all its topics, 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/ >>> http://circuitco.com/support/ >>> -- >>> For more options, visit http://beagleboard.org/discuss >>> --- >>> You received this message because you are subscribed to a topic in the >>> Google Groups "BeagleBoard" group. >>> To unsubscribe from this topic, visit >>> https://groups.google.com/d/topic/beagleboard/xRPC_39ju9Y/unsubscribe. >>> To unsubscribe from this group and all its topics, send an email to >>> [email protected]. >>> For more options, visit https://groups.google.com/d/optout. >>> >>> >>> -- >>> Bremenpl >>> >>> -- >>> 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/ >> http://circuitco.com/support/ >> >> -- >> For more options, visit http://beagleboard.org/discuss >> --- >> You received this message because you are subscribed to a topic in the >> Google Groups "BeagleBoard" group. >> To unsubscribe from this topic, visit >> https://groups.google.com/d/topic/beagleboard/xRPC_39ju9Y/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> [email protected]. >> For more options, visit https://groups.google.com/d/optout. >> >> >> -- >> Bremenpl >> >> -- >> 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] > <javascript:_e(%7B%7D,'cvml','[email protected]');> > http://beagleboard.org/ > http://circuitco.com/support/ > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to a topic in the > Google Groups "BeagleBoard" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/beagleboard/xRPC_39ju9Y/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected] > <javascript:_e(%7B%7D,'cvml','beagleboard%[email protected]');> > . > For more options, visit https://groups.google.com/d/optout. > > > -- > Bremenpl > > -- > 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] > <javascript:_e(%7B%7D,'cvml','beagleboard%[email protected]');> > . > For more options, visit https://groups.google.com/d/optout. > -- Gerald [email protected] http://beagleboard.org/ http://circuitco.com/support/ -- 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.
