Re: [Paparazzi-devel] operation / flashing lisa/m

[Oswald Berthold]

hi, finally tried to find D3 and meter it, 6 Ohm both ways. i think the
damage can also be read off visually [1]. if i eventually replace it, what
part should i use?

bst, opt

[1] 
https://wiki.paparazziuav.org/wiki/User:Opt#.5B2014-06-22_Sun_23:58.5D_log_.2F_notes_.2F_ppz

Piotr Esden-Tempski writes:

> Hi Oswald,
>
> You might have burned/overheated D3 diode. This would cause the diode to let 
> current through in reverse making the MCU think that USB cable is connected. 
> Try to use your multimeter and see if the diode conducts in reverse now.
>
> I actually wanted to add to my previous email that you might be ok having USB 
> and UBEC connected at the same time. When I did that in the past it was 
> working out fine. But obviously I was very wrong in that assumption.
>
> I hope this helps.
>
> Cheers,
> Piotr
>
> On Jun 10, 2014, at 14:24, Oswald Berthold <address@hidden> wrote:
>
>> 
>> hey felix, thanks for that info, BMP sounds very promising.
>> 
>> because, and just anecdotally, when wanting to upload the baro change
>> (from the other thread) a few minutes ago, i promptly forgot to unplug
>> the UBEC resulting in the smell of very warm electronics. now lisa goes
>> into bootloader even when no USB is connected. fixing it with ADC2<->GND
>> now requires me to unplug two cables to be able to flash, yeah. ;)
>> 
>> bst, oswald
>> 
>> p.s. if anyone could think of what could have been blown by this mishap,
>> i'd be happy to hear that.
>> 
>> Felix Ruess writes:
>> 
>>> Hi Oswald,
>>> 
>>> if you want to flash via USB bootloader, there is currently no way around
>>> this that I know of..
>>> But you could instead flash via JTAG or SWD (e.g. using FlossJTAG or
>>> BlackMagicProbe).
>>> I can really recommend the BlackMagicProbe, it's great for development and
>>> debugging.
>>> 
>>> Cheers, Felix
>>> 
>>> 
>>> On Tue, Jun 10, 2014 at 12:08 PM, Oswald Berthold <
>>> address@hidden> wrote:
>>> 
>>>> 
>>>> hi all again,
>>>> 
>>>> a few questions regarding flashing of the AP board:
>>>> 
>>>> flashing seems a bit awkward, the way i do it now is
>>>> - unplug UBEC from servo ports
>>>> - plug in micro USB
>>>> - upload firmware
>>>> - unplug USB
>>>> - replug UBEC
>>>> 
>>>> is there a way of connecting both USB and external power supply to lisa?
>>>> i have the POWER_FROM_SERVO jumper closed. is there a way for getting
>>>> the AP into upload mode with a soft command, that is, go from normal
>>>> operation into bootloader mode?
>>>> 
>>>> 
>>>> regards, opt
>>>> 
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>>>> 
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