[libhid-discuss] Parsing hid_dump_tree()

[Charles Lepple]

On Apr 21, 2008, at 8:21 PM, comicinker wrote:
>
> Am Freitag, den 28.03.2008, 21:01 -0400 schrieb Charles Lepple:
>>
>>> AND: How can I get the RECV_PACKET_LEN for this address
>> automatically?
>>> Or is it always the same length for each address (6)? The
>>> test_libhid.c
>>> doesn't tell where this value is detected.
>>
>>
>> It is in the interface descriptor.
>
> I'm still looking for this entry in the interface descriptor. Can
> somebody give me a hint where it is hidden? Is it really HIDData.Size?

HIDData.Size is the size of one element, I think. (Sorry, I don't  
have time to look through the code.)

I was mistaken - I was thinking of wMaxPacketSize in the endpoint  
descriptor (not the interface descriptor). I usually either just  
hardcode that for a given device, or use control transfers instead.

-- 
Charles Lepple