Re: [javax-usb-devel] question about javax.usb

2005-07-06 Thread Dan Streetman
The Windows code in CVS is in pre-alpha state, it needs a kernel driver. It won't work without that, so unless you would like to write a Windows kernel driver you won't be able to get it to work :( If you are interested, I believe IBM has a closed-source for-license Windows implementation, alt

Re: [javax-usb-devel] speed of submitting UsbIrp to an iso pipe

2005-07-06 Thread Dan Streetman
You aren't going to improve on turnaround time. You need to add more IRPs so your math comes out to a better number :) i.e. I irps * B bytes/irp = sample rate (bytes/sec) turnaround time (sec) you tried 1 irp with 200 bytes, for: 1 irp * 200 b/irp ---

Re: [javax-usb-devel] question about javax.usb

2005-07-06 Thread Philippe BARTHELEMY
> It won't work without that, so unless you would like to write a Windows > kernel driver you won't be able to get it to work :( Doesn't libusb-win32 provide a generic USB kernel driver ? I am coding for a device ( the Polar USB IR interface used to connect a watch to a PC ). jUSB ( an old java/

Re: [javax-usb-devel] question about javax.usb

2005-07-06 Thread Dan Streetman
On Wed, 6 Jul 2005, Philippe BARTHELEMY wrote: >> It won't work without that, so unless you would like to write a Windows >> kernel driver you won't be able to get it to work :( > >Doesn't libusb-win32 provide a generic USB kernel driver ? Yes it does, and I have thought about creating a libusb

[javax-usb-devel] speed of submitting UsbIrp to an iso pipe

2005-07-06 Thread Charles Chen
Hi, Dan, Do you mean I should use Irp list? Here is my code below, but the time for submitting the list is 240ms. Do I misunderstand something? Thanks for help. List usbIrpList = new ArrayList(); int nBuffer = 20;