LIBUSB_REQUEST_SET_CONFIGURATION

[warren5188]

	uint8_t bmReqType = LIBUSB_REQUEST_TYPE_CLASS | LIBUSB_ENDPOINT_OUT | LIBUSB_REQUEST_CLEAR_FEATURE;  0x00// the request type (direction of transfer)
	uint8_t bReq = LIBUSB_REQUEST_SET_CONFIGURATION;  0x09// the request field for this packet
	uint16_t wVal = 0x0001;// the value field for this packet
	uint16_t wIndex = 0x0000;// the index field for this packet	
	uint16_t wLength = 0x0000; // the length field for this packet
	r = libusb_control_transfer(devh, bmReqType, bReq, wVal, wIndex, NULL, wLength, 1000);

	for (uint8_t i = 0; i < 0xff; i++) {
		r = libusb_control_transfer(devh, i, bReq, wVal, wIndex, NULL, wLength, 1000);
	}
	// 终止命令
	r = libusb_control_transfer(devh, LIBUSB_REQUEST_TYPE_CLASS | LIBUSB_ENDPOINT_OUT | LIBUSB_REQUEST_CLEAR_FEATURE, 0x06, 0x00, 0, NULL, 0, 0);

no output in bushound:

00 09 01 00  00 00 00 00        SET CONFIG

Command execution successful (return r = 0).

This command cannot be issued and data cannot be captured through bushound.

	uint8_t bmReqType = 0x00;// LIBUSB_REQUEST_TYPE_CLASS | LIBUSB_ENDPOINT_OUT | LIBUSB_REQUEST_CLEAR_FEATURE;// the request type (direction of transfer)
	uint8_t bReq = LIBUSB_REQUEST_SET_CONFIGURATION;// the request field for this packet
	uint16_t wVal = 0x0001;// the value field for this packet
	uint16_t wIndex = 0x0000;// the index field for this packet	
	uint16_t wLength = 0x0000; // the length field for this packet
	for (uint8_t i = 0; i < 0xff; i++) {
		r = libusb_control_transfer(devh, i, bReq, wVal, wIndex, NULL, wLength, 1000);
	}

output in bushound:

   8.0  CTL    20 09 01 00  00 00 00 00                                                                                CLASS                             117ms         5.1.0        2023/12/14  15:03:45.759  
   8.0  CTL    21 09 01 00  00 00 00 00                                                                                CLASS                             3.4ms         6.1.0        2023/12/14  15:03:45.763  
   8.0  CTL    22 09 01 00  00 00 00 00                                                                                CLASS                             2.7ms         7.1.0        2023/12/14  15:03:45.765  
   8.0  CTL    23 09 01 00  00 00 00 00                                                                                CLASS                             1.0sc         
.
.
.
   8.0  CTL    fb 09 01 00  00 00 00 00                                                                                CLASS                             5.0ms        12.1.0        2023/12/14  15:03:46.788  
   8.0  CTL    fc 09 01 00  00 00 00 00                                                                                CLASS                             3.0ms        13.1.0        2023/12/14  15:03:46.791  
   8.0  CTL    fd 09 01 00  00 00 00 00                                                                                CLASS                             3.7ms        14.1.0        2023/12/14  15:03:46.795  
   8.0  CTL    fe 09 01 00  00 00 00 00                                                                                CLASS                             3.5ms        15.1.0        2023/12/14  15:03:46.798  

from 0x01 - 0x19 can not be captured .

system:window 11
version: libusb 1.0.26
debug log:

[ 0.931648] [0000477c] libusb: debug [add_to_flying_list] arm timer for timeout in 1000ms (first in line)
[ 0.932154] [0000477c] libusb: debug [libusb_claim_interface] interface 0
[ 0.932226] [0000477c] libusb: debug [winusbx_claim_interface] claimed interface 0
[ 0.932934] [0000477c] libusb: debug [windows_assign_endpoints] no endpoints found for interface 0
[ 0.933332] [0000477c] libusb: debug [auto_claim] auto-claimed interface 0 for control request
[ 0.933557] [0000477c] libusb: debug [winusbx_submit_control_transfer] will use interface 0
[ 0.933778] [0000477c] libusb: debug [libusb_handle_events_timeout_completed] doing our own event handling
[ 0.934054] [0000477c] libusb: debug [usbi_wait_for_events] WaitForMultipleObjects() for 2 HANDLEs with timeout in 60000ms
[ 0.934083] [00002ed0] libusb: debug [windows_iocp_thread] transfer 000002522A4A26A0 completed, length 2
[ 0.934595] [0000477c] libusb: debug [usbi_wait_for_events] WaitForMultipleObjects() returned 0
[ 0.934915] [0000477c] libusb: debug [handle_event_trigger] event triggered
[ 0.935162] [0000477c] libusb: debug [windows_handle_transfer_completion] handling transfer 000002522A4A26A0 completion with errcode 0, length 2
[ 0.935389] [0000477c] libusb: debug [libusb_release_interface] interface 0
[ 0.935609] [0000477c] libusb: debug [auto_release] auto-released interface 0
[ 0.935829] [0000477c] libusb: debug [arm_timer_for_next_timeout] no timeouts, disarming timer
[ 0.936050] [0000477c] libusb: debug [usbi_handle_transfer_completion] transfer 000002522A4A26A0 has callback 00007FF616F31370
[ 0.936267] [0000477c] libusb: debug [sync_transfer_cb] actual_length=2
[ 0.936496] [0000477c] libusb: debug [libusb_free_transfer] transfer 000002522A4A26A0
[ 1.850794] [0000477c] libusb: debug [libusb_submit_transfer] transfer 000002522A4A26A0
[ 1.850903] [0000477c] libusb: debug [add_to_flying_list] arm timer for timeout in 1000ms (first in line)
[ 1.851267] [0000477c] libusb: debug [libusb_claim_interface] interface 0
[ 1.851772] [0000477c] libusb: debug [winusbx_claim_interface] claimed interface 0
[ 1.852017] [0000477c] libusb: debug [windows_assign_endpoints] no endpoints found for interface 0
[ 1.852757] [0000477c] libusb: debug [auto_claim] auto-claimed interface 0 for control request
[ 1.853054] [0000477c] libusb: debug [winusbx_submit_control_transfer] will use interface 0
[ 1.853331] [0000477c] libusb: debug [windows_force_sync_completion] transfer 000002522A4A26A0, length 0
[ 1.853553] [0000477c] libusb: debug [libusb_handle_events_timeout_completed] doing our own event handling
[ 1.853578] [00002ed0] libusb: debug [windows_iocp_thread] transfer 000002522A4A26A0 completed, length 0
[ 1.853788] [0000477c] libusb: debug [usbi_wait_for_events] WaitForMultipleObjects() for 2 HANDLEs with timeout in 60000ms
[ 1.854415] [0000477c] libusb: debug [usbi_wait_for_events] WaitForMultipleObjects() returned 0
[ 1.854770] [0000477c] libusb: debug [handle_event_trigger] event triggered
[ 1.854999] [0000477c] libusb: debug [windows_handle_transfer_completion] handling transfer 000002522A4A26A0 completion with errcode 0, length 0a
[ 1.855265] [0000477c] libusb: debug [libusb_release_interface] interface 0
[ 1.855482] [0000477c] libusb: debug [auto_release] auto-released interface 0
[ 1.855715] [0000477c] libusb: debug [arm_timer_for_next_timeout] no timeouts, disarming timer
[ 1.855945] [0000477c] libusb: debug [usbi_handle_transfer_completion] transfer 000002522A4A26A0 has callback 00007FF616F31370
[ 1.856165] [0000477c] libusb: debug [sync_transfer_cb] actual_length=0
[ 1.856876] [0000477c] libusb: debug [libusb_free_transfer] transfer 000002522A4A26A0

[tormodvolden]

Please give as much information as you can. See https://github.com/libusb/libusb/wiki/Troubleshooting
As an absolute minimum: Which OS version is this? Drivers? What libusb version or checkout? What device is this? If you can reproduce the issue, please attach a debug log (LIBUSB_DEBUG=4).