Re: [Libusb-win32-devel] Disconnect detection in libusb

[<IC-...@t-...>]

Hello,

>From: IC-...@t-... (kosel)

>It seems, that this prevents the host (XP SP2) to wake up my device after S1 
>resume!
>I am also not sure, if allways all the certified USB 2.0 hubs have received a 
>resume.
>
>My loop:
>
>#ifdef unix
>// see ms-help://MS.VSCC.2003/MS.MSDNQTR.2003FEB.1031/dnucmg/html/UCMGch09.htm
>#include <time.h>
>#define SECONDS 1 // unix measures time in sleep in seconds
>#else
>#include <windows.h>
>#define SECONDS 1000  // microsoft sleep uses milliseconds
>#define sleep(x) Sleep(x*SECONDS)
>#endif
>
>		while(!udev) {

if I call the sleep function in this line, no USB device resumes at all!
(At least all devices and hubs which are connected to the same root hub port.)

>		    udev = getUsbStepcounter(devicenumber);
>			fflush(stderr);
>			if(!udev) {
>				printf("Waiting for device %d to reconnect\n",
>				devicenumber);
>				fflush(stdout); // flush iobuffers before 
>					        // sleepling
>				sleep(1);
>			}
>		}

Is there any known side effect between the MS Sleep function and libusb?


Greetings
	Juergen