Hi,
I guess that's looking at the Attributes and MaxPower setting ? - As when
its in phone mode it returns
>> Attributes: 0xC0 (self-powered)
>> MaxPower: 500 ma
and then charges normally, but one thing which is slightly weird is that
attaching to my G5 PowerMac and back in mass storage mode it returns
>> Attributes: 0xC0 (self-powered)
>> MaxPower: 100 ma
But attached to my G4 17" PowerBook it returns
>> Attributes: 0xC0 (self-powered)
>> MaxPower: 0 ma
Any ideas ?, as I'm wondering why the UI in the phone USB device settings
is have charge via USB is available when the phone in either CDC or mass
storage mode. (I guess a firmware bug ? ).
Thanks
Mark.
> Message: 6
> Date: Fri, 13 Oct 2006 13:25:39 -0700
> From: David Ferguson <email@hidden>
> Subject: Re: Apple MASS storage driver
> To: USB List at Apple <email@hidden>
> Message-ID: <email@hidden>
> Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed
>
> At least the charging thing should be understood. The phone is
> reporting itself as Self Powered, and that it draws no power. Hard
> to charge with those specs.
>
> It likely that the phone just doesn't charge in that mode.
>
> David Ferguson
> USB Software Team
>
>
> On Oct 13, 2006, at 1:05 PM, Mark Thomas wrote:
>
>> Hi,
>> I have a Sony Ericcson P990i which has an option which reports it
>> can be
>> behave like a USB mass storage device when attached via the USB route.
>> Unfortunately this isn't working, so looking at the USB Prober its is
>> reporting itself as a mass storage device, so wondering what could be
>> happening ?
>>
>> Any clues of what extra to check or investigate ? - here's a
>> snapshot of
>> some info
>>
>> Full Speed device @ 2 (0x1B100000):
>> ............................................. Communication device:
>> "P990i"
>> Device Descriptor
>> Descriptor Version Number: 0x0200
>> Device Class: 2 (Communication)
>> Device Subclass: 0
>> Device Protocol: 0
>> Device MaxPacketSize: 64
>> Device VendorID/ProductID: 0x0FCE/0xE030 (Sony Ericsson
>> Mobile
>> Communications AB)
>> Device Version Number: 0x0000
>> Number of Configurations: 1
>> Manufacturer String: 1 "Sony Ericsson Mobile Communications"
>> Product String: 2 "P990i"
>> Serial Number String: 3 "35959300169367"
>> Configuration Descriptor: .......................................
>> "First and Last and Always"
>> Total Length of Descriptor: 32
>> Number of Interfaces: 1
>> Configuration Value: 1
>> Attributes: 0xC0 (self-powered)
>> MaxPower: 0 ma
>> Interface #0 - Mass Storage/SCSI
>> Alternate Setting 0
>> Number of Endpoints 2
>> Interface Class: 8 (Mass Storage)
>> Interface Subclass; 6 (SCSI)
>> Interface Protocol 80
>> Endpoint 0x82 - Bulk Input
>> Endpoint 0x02 - Bulk Output
>>
>>
>> The phone's USB other option is to appear as a USB modem which works
>> great, and appears correctly in the network connection.
>>
>> Thanks
>> Mark.
>>
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