Daily use of Neo1973
Peter Rasmussen
plr at udgaard.com
Wed Feb 20 21:05:17 CET 2008
I have a Motorola A780 mobile, and the charger that comes with it has a
mini-USB connector, and it charges the Neo1973 very good for me. It also
handles a 500mA load.
As far as I know, Motorola has a number of mobiles that uses a mini-USB
connector, so I guess it should be possible to get such a charger
without too much trouble.
I don't know about a car charger (I have dis-selected having a car :-)
so I can't advice you about that.
Peter
Ralf Krantz wrote:
> I am using my Neo (latest Qtopia image) since about 10 days as my
> primary business phone. I am a quality engineer of automobile industry
> and the main problems I have before deeper testing, is that the Neo
> will not establish a bluetooth connection with the handsfree system of
> common automobile bluetooth units (OEM). Further more I haven't found
> a seperate charger for the Neo. I charge it at home with my
> Linux-machine and during work the battery get's flat after about 4
> hours using it. My windows-business-machine won't load the battery,
> which means I have to wait until the next day. Is there somebody out
> there, who can give me an advice which wall-plug-charger I have to buy
> and secondly which car-charger I have to buy?
>
> Kind Regards
>
> Ralf
>
> Am Mittwoch, den 20.02.2008, 19:48 +0100 schrieb Tilman Baumann:
>> Joe Pfeiffer wrote:
>> > Tilman Baumann writes:
>> >> Hm. I never tried Windows. But this does not make much sense to me.
>> >> The Os just has to select a device configuration to allow it to draw
>> >> power. This does not mean it has to have a driver for it.
>> >> I'm pretty much sure my linux server which i sometimes use for charging
>> >> does not have any driver whatsoever for this device. But it charges nicely.
>> >>
>> >> Strange. But however, it is windows...
>> >
>> > I don't know anything about Windows, but -- the problem with not
>> > charging on dumb cords is that the NEO is polite about needing to
>> > handshake, and being able to request 500mA, before it will draw
>> > 500mA. If the device on the other end doesn't even do that, the NEO
>> > will only draw 100mA which isn't enough (the fast_cccv parameter
>> > somebody else mentioned will, apparently, force it to draw lots of
>> > power anyway).
>>
>> I know. But selecting a device configuration (allowing the device to go
>> into a status that consumes more than 10mA) has nothing to do with
>> drivers or anything like that.
>> At least not necessarily.
>>
>>
>> Any USB device just offers the host one or many possible device
>> configurations (descriptors) with they respective power consumtion
>> profiles when it is plugged in.
>> The next step for the host (operating system) is to select one of these
>> configurations to allow the device to go in this mode.
>>
>> The os does not need to now what a device does, in order to allow it to
>> do anything.
>> I'm really surprised and not entirely convinced that windows does not
>> select a profile on any unknown device.
>> A mobile phone would be not the only situation where this behaviour
>> seems like a bad idea.
>>
>> Regards
>> Tilman
>>
>>
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