On Sun, Jun 26, 2011 at 7:58 PM, Xiaofan Chen <xiaofanc@xxxxxxxxx> wrote:
> On Sun, Jun 26, 2011 at 7:55 PM, Xiaofan Chen <xiaofanc@xxxxxxxxx> wrote:
>> Endpoint Descriptor:
>> bLength 7
>> bDescriptorType 5
>> bEndpointAddress 0x81 EP 1 IN
>> bmAttributes 2
>> Transfer Type Bulk
>> Synch Type None
>> Usage Type Data
>> wMaxPacketSize 0x0000 1x 0 bytes
>> bInterval 0
>> Endpoint Descriptor:
>> bLength 7
>> bDescriptorType 5
>> bEndpointAddress 0x02 EP 2 OUT
>> bmAttributes 2
>> Transfer Type Bulk
>> Synch Type None
>> Usage Type Data
>> wMaxPacketSize 0x0040 1x 64 bytes
>> bInterval 0
>>
> Oops, my bad, something is wrong with your device that
> wMaxPacketSize for EP1 IN is zero. In that case, how
> can it send data to the host?
>
> What is your system?
>
I search my Linux USB mailing list and indeed this is
possible. The fix should be in the kernel and not in the
user space (libftdi).
Discussion:
http://marc.info/?t=120423246300011&r=1&w=2
Somehow I do not see the patch submitted later
in the list.
--
Xiaofan
--
libftdi - see http://www.intra2net.com/en/developer/libftdi for details.
To unsubscribe send a mail to libftdi+unsubscribe@xxxxxxxxxxxxxxxxxxxxxxx
|
