[Libusb-win32-devel] Questions And Problem LIBUSB and =?utf-8?b?dXNiX2ludGVycnVwdF9yZWFk?=

[Philipp <phi...@we...>]

Hi @ All.
I’m using  the LIB-USB for my thesis.
LIBUSB_DLL: usb_os_init: dll version: 0.1.10.1
LIBUSB_DLL: usb_os_init: driver version: 0.1.10.1
First I have some general questions about the LIBUSB:
1 Is there a handshake implemented, that informs me about arrived data?
2 Why can’t the USB software analysers show me the data transfers while using
LIBUSB? e.g. Snoopy(from sourceforge.net ) and USB monitor
(http://www.hhdsoftware.com/usbmon.html)
3 Do I have any influence of Enumeration process? And how is it handled?
4 Why do I have to read always the full EP size?
(http://thread.gmane.org/gmane.comp.lib.libusb.devel.windows/475/focus=475) 

And now my recent Problems:
At the firs implementation step I’m using interrupt transfers, but I have
problems during “usb_interrupt_read”
Because if I’am reading to fast the debug message was that the System has not
enough capacity for this operation. But I guess this is just the fault of my
Programming J
This message is disappeared since I added a loop in between send an receive. But
now I get:
LIBUSB_DLL error: usb_reap_async: timeout error
What could be the reason for this?   

I’m gratefully  about any suggestions or Programming Examples!

Best Regards
Philipp 
 
P.S. here is the diskriptor of my USB device:

Port1: USB Test Device
	Hub Power: Self Power
	Number of Ports: 2
	Power switching: None
	Compound device: No
	Over-current Protection: Individual
	Device Descriptor
		USB Version: 2.0
		Device Class: (0) Reserved (defined in Interface Descriptor)
		Device Subclass: 0
		Device Protocol: 0
		Max Packet Size: 0x40 (64) bytes
		Vendor: 0xffff ()
		Product ID: 0x0001
		Product Version: 0x0000
		Manufacturer: 1
			0x0409: XXX
		Product: 2
			0x0409: XXX
		SerialNumber: 3
			0x0409: 00000001
		Number of Configurations: 1
	Connection Status: Device Connected
	Current Configuration: 1
	Device Bus Speed: Full
	Device Address: 0x01
	Number of Open Pipes: 2
	Configuration Descriptor (1)
		Total Length: 32 bytes
		Number of Interfaces: 1
		Configuration Value: 1
		Configuration: 0
		Attributes: 0x80
			Bus Powered
		Max Power: 0x32 (100 Ma)
	Interface Descriptor (0)
		Interface Number: 0
		Alternate Setting: 0x00
		Number of Endpoints: 0x02
		Interface Class: (255) Vendor Specific
		Interface Subclass: 255
		Interface Protocol: 255
		Interface: 0
	Endpoint Descriptor (Addr: 0x81)
		Endpoint Address: 0x81, Input
		Transfer Type: Interrupt
		Max Packet Size: 0x0040 (64) bytes
		Interval: 0x02
	Endpoint Descriptor (Addr: 0x04)
		Endpoint Address: 0x04, Output
		Transfer Type: Interrupt
		Max Packet Size: 0x0040 (64) bytes
		Interval: 0x02