reset the USB cable when /dev/windrvr6 is closed.

This should solve prolems when impact fails on second use.

Makefile

@@ -1,6 +1,8 @@
 #Add -DFORCE_PC3_IDENT to CFLAGS to force the identification of
 #a Parallel Cable III
-CFLAGS=-Wall -fPIC -DUSB_DRIVER_VERSION="\"$(shell stat -c '%y' usb-driver.c |cut -d\. -f1)\"" #-DFORCE_PC3_IDENT
+#Add -DNO_USB_RESET to disable the hard reset of the cable on
+#close of the device
+CFLAGS=-Wall -fPIC -DUSB_DRIVER_VERSION="\"$(shell stat -c '%y' usb-driver.c |cut -d\. -f1)\"" #-DFORCE_PC3_IDENT -DNO_USB_RESET
 
 LIBS=-ldl -lusb -lpthread
 

usb-driver.c

@@ -830,8 +830,12 @@ int close(int fd) {
 		if (usbinterface >= 0)
 			usb_release_interface(usb_devhandle, usbinterface);
 
-		if (usb_devhandle)
+		if (usb_devhandle) {
+#ifndef NO_USB_RESET
+			usb_reset(usb_devhandle);
+#endif
 			usb_close(usb_devhandle);
+		}
 
 		usb_devhandle = NULL;
 		usbinterface = -1;