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Added misc files, more descriptor trials.

This commit is contained in:
imi415 2022-02-10 21:45:13 +08:00
parent 3652d5da9c
commit 61af44e07b
Signed by: imi415
GPG Key ID: 17F01E106F9F5E0A
9 changed files with 678 additions and 20 deletions
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2
.clang-format
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@ -2,7 +2,7 @@ BasedOnStyle: Google
IndentWidth: 4
AlignConsecutiveMacros: AcrossEmptyLines
AlignConsecutiveDeclarations: true
AlignConsecutiveAssignments: AcrossEmptyLinesAndComments
AlignConsecutiveAssignments: true
BreakBeforeBraces: Custom
BraceWrapping:
AfterEnum: false

1
CMakeLists.txt
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@ -37,6 +37,7 @@ set(TARGET_C_SOURCES
"Core/Src/stm32h7xx_hal_msp.c"
"Core/Src/stm32h7xx_hal_timebase_tim.c"
"Core/Src/system_stm32h7xx.c"
"Core/Src/usbd_uac_process.c"
"Drivers/STM32H7xx_HAL_Driver/Src/stm32h7xx_hal.c"
"Drivers/STM32H7xx_HAL_Driver/Src/stm32h7xx_hal_cortex.c"
"Drivers/STM32H7xx_HAL_Driver/Src/stm32h7xx_hal_dma.c"

56
Core/Inc/usbd_descriptors.h
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@ -18,10 +18,21 @@ UCHAR device_framework_fs[] = {
0x03, // iSerialNumber
0x01, // bNumConfigurations
/* Device Qualifier descriptor */
0x0A, // bLength
0x06, // bDescriptorType
0x00, 0x02, // bcdUSB
0xEF, // bDeviceClass !! DESCRIBED IN IAD
0x02, // bDeviceSubClass !! -^
0x01, // bDeviceProtocol !! -^
0x08, // bMaxPacketSize0
0x01, // bNumConfigurations
0x00, // bReserved
/* Configuration descriptor size=9 */
0x09, // bLength
0x02, // bDescriptorType
0xA4, 0x00, // wTotalLength !! 9 + 8 + 9 + 85 + 9 + 16 + 6 + 8 + 7 + 7 ...
0xB1, 0x00, // wTotalLength !! 9 + 8 + 9 + 89 + 9 + 9 + 16 + 6 + 8 + 7 + 7 ...
0x02, // bNumInterfaces
0x01, // bConfigurationValue
0x00, // iConfiguration
@ -55,7 +66,7 @@ UCHAR device_framework_fs[] = {
0x01, // bDescriptorSubType
0x00, 0x02, // bcdADC !! 2.00
0x08, // bCategory
0x55, 0x00, // wTotalLength !! <UAC2 Table 4-5> 9 + 8 + 8 + 8 + 9 + 14 + 17 + 12 + ...
0x59, 0x00, // wTotalLength !! <UAC2 Table 4-5> 9 + 8 + 8 + 8 + 9 + 18 + 17 + 12 + ...
0x00, // bmControls
/* Audio Control Clock Source descriptor CID=0x10 size=8 */
@ -99,14 +110,15 @@ UCHAR device_framework_fs[] = {
0x03, // bmControls !! Windows UAC 2.0 driver does not support SET_CUR.
0x00, // iClockSelector
/* Audio Control Feature Unit descriptor UID=0 size=14 */
0x0E, // bLength !!
/* Audio Control Feature Unit descriptor UID=0 size=18 */
0x12, // bLength !!
0x24, // bDescriptorType
0x06, // bDescriptorSubType
0x30, // bUnitID !!
0x20, // bSourceID !! From Input Terminal TID=0x20
0x0F, 0x00, 0x00, 0x00, // bmaControls(0) !!
0x0F, 0x00, 0x00, 0x00, // bmaControls(1) !!
0x00, 0x00, 0x00, 0x00, // bmaControls(1) !!
0x00, 0x00, 0x00, 0x00, // bmaControls(2)
0x00, // iFeature
/* Audio Control Input Terminal descriptor TID=0x20 size=17 */
@ -118,7 +130,7 @@ UCHAR device_framework_fs[] = {
0x00, // bAssocTerminal !!
0x12, // bCSourceID !! From Clock Selector CID=0x12
0x02, // bNrChannels
0x00, 0x00, 0x00, 0x00, // bmChannelConfig
0x03, 0x00, 0x00, 0x00, // bmChannelConfig
0x00, // iChannelNames
0x00, 0x00, // bmControls
0x00, // iTerminal
@ -140,6 +152,17 @@ UCHAR device_framework_fs[] = {
0x04, // bDescriptorType
0x01, // bInterfaceNumber
0x00, // bAlternateSetting
0x00, // bNumEndpoints
0x01, // bInterfaceClass
0x02, // bInterfaceSubClass
0x20, // bInterfaceProtocol
0x00, // iInterface
/* Audio Streaming Interface descriptor size=9 */
0x09, // bLength
0x04, // bDescriptorType
0x01, // bInterfaceNumber
0x01, // bAlternateSetting
0x02, // bNumEndpoints
0x01, // bInterfaceClass
0x02, // bInterfaceSubClass
@ -155,7 +178,7 @@ UCHAR device_framework_fs[] = {
0x01, // bFormatType
0x01, 0x00, 0x00, 0x00, // bmFormats
0x02, // bNrChannels
0x00, 0x00, 0x00, 0x00, // bmChannelConfig
0x03, 0x00, 0x00, 0x00, // bmChannelConfig
0x00, // iChannelNames
/* Audio Streaming Format Type descriptor size=6 */
@ -163,7 +186,7 @@ UCHAR device_framework_fs[] = {
0x24, // bDescriptorType
0x02, // bDescriptorSubType
0x01, // bFormatType
0x02, // bSubslotSize
0x02, // bSubslotSize !!
0x10, // bBitResolution !! - 16bits
/* Audio Streaming Class Specific Data Endpoint descriptor size=8 */
@ -181,15 +204,15 @@ UCHAR device_framework_fs[] = {
0x01, // bEndpointAddress
0x05, // bmAttributes
0x00, 0x01, // wMaxPacketSize
0x04, // bInterval
0x01, // bInterval
/* Endpoint descriptor size=7 */
0x07, // bLength
0x05, // bDescriptorType
0x81, // bEndpointAddress
0x11, // bmAttributes
0x00, 0x01, // wMaxPacketSize
0x04, // bInterval
0x04, 0x00, // wMaxPacketSize
0x01, // bInterval
};
UCHAR device_framework_hs[] = {
@ -288,10 +311,13 @@ UCHAR device_framework_string[] = {
/* Serial Number string descriptor : Index 3 */
0x09,
0x04, // wLANGID
0x03, // bIndex
0x04, // bLength
0x30, 0x30, 0x30, 0x31, // "0001"
0x04, // wLANGID
0x03, // bIndex
0x10, // bLength
'0', '1', '2', '3', // ..DATA
'4', '5', '6', '7', // -^
'8', '9', 'A', 'B', // -^
'C', 'D', 'E', 'F', // -^
};
UCHAR device_framework_lang_id[] = {

11
Core/Inc/usbd_uac_process.h Normal file
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@ -0,0 +1,11 @@
#ifndef USBD_UAC_PROCESS_H
#define USBD_UAC_PROCESS_H
#include "ux_api.h"
#include "ux_device_class_audio.h"
#include "ux_device_class_audio20.h"
#include "ux_device_stack.h"
UINT usbd_uac_class_register(void);
#endif

13
Core/Src/main.c
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@ -36,6 +36,8 @@
#include "ux_device_class_audio20.h"
#include "ux_device_stack.h"
#include "usbd_uac_process.h"
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
@ -98,11 +100,11 @@ static uint8_t tx_block_memory[65536];
TX_THREAD led_thread;
UX_DEVICE_CLASS_AUDIO_PARAMETER audio_param;
#include "usbd_descriptors.h"
static void usb_init(void) {
_ux_dcd_stm32_initialize(0, (ULONG)&hpcd_USB_OTG_FS);
HAL_PCDEx_SetRxFiFo(&hpcd_USB_OTG_FS, 0x120);
HAL_PCDEx_SetTxFiFo(&hpcd_USB_OTG_FS, 0, 0x80);
HAL_PCDEx_SetTxFiFo(&hpcd_USB_OTG_FS, 1, 0x174);
@ -112,7 +114,6 @@ static void usb_init(void) {
}
static void led_thread_entry(ULONG thread_input) {
_ux_dcd_stm32_initialize(0, (ULONG)&hpcd_USB_OTG_FS);
usb_init();
while(1) {
@ -139,7 +140,11 @@ void tx_application_define(void *first_unused_memory) {
UX_NULL);
//_ux_device_stack_class_register(_ux_system_slave_class_audio_name, _ux_device_class_audio_entry, 1, 0, UX_NULL);
if(usbd_uac_class_register() != UX_SUCCESS) {
for(;;) {
//
}
}
tx_thread_create(&led_thread, "LED Thread", led_thread_entry, 0, memory_ptr, 2048, 3, 3, TX_NO_TIME_SLICE, TX_AUTO_START);
}

80
Core/Src/usbd_uac_process.c Normal file
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@ -0,0 +1,80 @@
#include "usbd_uac_process.h"
UX_DEVICE_CLASS_AUDIO_PARAMETER audio_param;
UX_DEVICE_CLASS_AUDIO_STREAM_PARAMETER audio_stream_param[1];
UX_DEVICE_CLASS_AUDIO20_CONTROL audio_control[1];
static UINT usbd_uac_request_process(UX_DEVICE_CLASS_AUDIO *audio, UX_SLAVE_TRANSFER *transfer);
static VOID usbd_uac_activate(VOID *args);
static VOID usbd_uac_deactivate(VOID *args);
static VOID usbd_uac_stream_change(UX_DEVICE_CLASS_AUDIO_STREAM *stream, ULONG alt_setting);
static VOID usbd_uac_frame_done(UX_DEVICE_CLASS_AUDIO_STREAM *stream, ULONG actual_len);
UINT usbd_uac_class_register(void) {
audio_control[0].ux_device_class_audio20_control_cs_id = 0x10;
audio_control[0].ux_device_class_audio20_control_sampling_frequency = 48000;
audio_control[0].ux_device_class_audio20_control_fu_id = 0x30;
audio_control[0].ux_device_class_audio20_control_mute[0] = 0;
audio_control[0].ux_device_class_audio20_control_volume_min[0] = 0;
audio_control[0].ux_device_class_audio20_control_volume_max[0] = 100;
audio_control[0].ux_device_class_audio20_control_volume_res[0] = 1;
audio_control[0].ux_device_class_audio20_control_volume[0] = 100;
audio_stream_param[0].ux_device_class_audio_stream_parameter_callbacks.ux_device_class_audio_stream_change =
usbd_uac_stream_change;
audio_stream_param[0].ux_device_class_audio_stream_parameter_callbacks.ux_device_class_audio_stream_frame_done =
usbd_uac_frame_done;
audio_stream_param[0].ux_device_class_audio_stream_parameter_max_frame_buffer_nb = 2;
audio_stream_param[0].ux_device_class_audio_stream_parameter_max_frame_buffer_size = 256;
audio_stream_param[0].ux_device_class_audio_stream_parameter_thread_entry = ux_device_class_audio_read_thread_entry;
audio_param.ux_device_class_audio_parameter_streams_nb = 1;
audio_param.ux_device_class_audio_parameter_streams = audio_stream_param;
audio_param.ux_device_class_audio_parameter_callbacks.ux_slave_class_audio_instance_activate = usbd_uac_activate;
audio_param.ux_device_class_audio_parameter_callbacks.ux_slave_class_audio_instance_deactivate =
usbd_uac_deactivate;
audio_param.ux_device_class_audio_parameter_callbacks.ux_device_class_audio_control_process =
usbd_uac_request_process;
return ux_device_stack_class_register(_ux_system_slave_class_audio_name, ux_device_class_audio_entry, 1, 0,
&audio_param);
}
UINT usbd_uac_request_process(UX_DEVICE_CLASS_AUDIO *audio, UX_SLAVE_TRANSFER *transfer) {
UINT status;
UX_DEVICE_CLASS_AUDIO20_CONTROL_GROUP group = {1, audio_control};
//
status = ux_device_class_audio20_control_process(audio, transfer, &group);
if (status != UX_SUCCESS) {
return status;
}
switch (audio_control[0].ux_device_class_audio20_control_changed) {
case UX_DEVICE_CLASS_AUDIO20_CONTROL_MUTE_CHANGED:
break;
case UX_DEVICE_CLASS_AUDIO20_CONTROL_VOLUME_CHANGED:
break;
default:
break;
}
return UX_SUCCESS;
}
static VOID usbd_uac_activate(VOID *args) {
//
}
static VOID usbd_uac_deactivate(VOID *args) {
//
}
static VOID usbd_uac_stream_change(UX_DEVICE_CLASS_AUDIO_STREAM *stream, ULONG alt_setting) {
//
}
static VOID usbd_uac_frame_done(UX_DEVICE_CLASS_AUDIO_STREAM *stream, ULONG actual_len) {
//
}

162
misc/nxp.lsusb Normal file
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@ -0,0 +1,162 @@
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x1fc9 NXP Semiconductors
idProduct 0x0098
bcdDevice 1.01
iManufacturer 1 NXP SEMICONDUCTORS
iProduct 2 USB AUDIO DEMO
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x0091
bNumInterfaces 2
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xc0
Self Powered
MaxPower 500mA
Interface Association:
bLength 8
bDescriptorType 11
bFirstInterface 0
bInterfaceCount 2
bFunctionClass 1 Audio
bFunctionSubClass 0
bFunctionProtocol 32
iFunction 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 1 Control Device
bInterfaceProtocol 32
iInterface 2 USB AUDIO DEMO
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdADC 2.00
bCategory 1
wTotalLength 0x0040
bmControls 0x00
AudioControl Interface Descriptor:
bLength 8
bDescriptorType 36
bDescriptorSubtype 10 (CLOCK_SOURCE)
bClockID 16
bmAttributes 1 Internal fixed clock
bmControls 0x07
Clock Frequency Control (read/write)
Clock Validity Control (read-only)
bAssocTerminal 0
iClockSource 2 USB AUDIO DEMO
AudioControl Interface Descriptor:
bLength 17
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 32
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bCSourceID 16
bNrChannels 2
bmChannelConfig 0x00000003
Front Left (FL)
Front Right (FR)
iChannelNames 0
bmControls 0x0000
iTerminal 2 USB AUDIO DEMO
AudioControl Interface Descriptor:
bLength 18
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 48
bSourceID 32
bmaControls(0) 0x0000000f
Mute Control (read/write)
Volume Control (read/write)
bmaControls(1) 0x00000000
bmaControls(2) 0x00000000
iFeature 0
AudioControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 64
wTerminalType 0x0301 Speaker
bAssocTerminal 0
bSourceID 48
bCSourceID 16
bmControls 0x0000
iTerminal 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 32
iInterface 2 USB AUDIO DEMO
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 1
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 32
iInterface 2 USB AUDIO DEMO
AudioStreaming Interface Descriptor:
bLength 16
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 32
bmControls 0x00
bFormatType 1
bmFormats 0x00000001
PCM
bNrChannels 2
bmChannelConfig 0x00000003
Front Left (FL)
Front Right (FR)
iChannelNames 0
AudioStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bSubslotSize 2
bBitResolution 16
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 13
Transfer Type Isochronous
Synch Type Synchronous
Usage Type Data
wMaxPacketSize 0x00c0 1x 192 bytes
bInterval 1
AudioStreaming Endpoint Descriptor:
bLength 8
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x00
bmControls 0x00
bLockDelayUnits 0 Undefined
wLockDelay 0x0000
Device Status: 0x0001
Self Powered

201
misc/self.lsusb Normal file
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@ -0,0 +1,201 @@
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 239 Miscellaneous Device
bDeviceSubClass 2
bDeviceProtocol 1 Interface Association
bMaxPacketSize0 8
idVendor 0x0483 STMicroelectronics
idProduct 0x5730 Audio Speaker
bcdDevice 0.00
iManufacturer 1 STMacroelectronics
iProduct 2 Lo-Res DAC
iSerial 3 0001
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x00ad
bNumInterfaces 2
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 114mA
Interface Association:
bLength 8
bDescriptorType 11
bFirstInterface 0
bInterfaceCount 1
bFunctionClass 1 Audio
bFunctionSubClass 0
bFunctionProtocol 32
iFunction 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 1 Control Device
bInterfaceProtocol 32
iInterface 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdADC 2.00
bCategory 8
wTotalLength 0x0055
bmControls 0x00
AudioControl Interface Descriptor:
bLength 8
bDescriptorType 36
bDescriptorSubtype 10 (CLOCK_SOURCE)
bClockID 16
bmAttributes 1 Internal fixed clock
bmControls 0x01
Clock Frequency Control (read-only)
bAssocTerminal 0
iClockSource 0
AudioControl Interface Descriptor:
bLength 8
bDescriptorType 36
bDescriptorSubtype 10 (CLOCK_SOURCE)
bClockID 17
bmAttributes 1 Internal fixed clock
bmControls 0x01
Clock Frequency Control (read-only)
bAssocTerminal 0
iClockSource 0
AudioControl Interface Descriptor:
bLength 8
bDescriptorType 36
bDescriptorSubtype 10 (CLOCK_SOURCE)
bClockID 17
bmAttributes 5 Internal fixed clock (synchronized to SOF)
bmControls 0x01
Clock Frequency Control (read-only)
bAssocTerminal 0
iClockSource 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 11 (CLOCK_SELECTOR)
bClockID 24
bNrInPins 2
baCSourceID(0) 16
baCSourceID(1) 17
bmControls 0x03
Clock Selector Control (read/write)
iClockSelector 0
AudioControl Interface Descriptor:
bLength 14
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 48
bSourceID 32
bmaControls(0) 0x0000000f
Mute Control (read/write)
Volume Control (read/write)
bmaControls(1) 0x00000000
iFeature 0
AudioControl Interface Descriptor:
bLength 17
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 32
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bCSourceID 18
bNrChannels 2
bmChannelConfig 0x00000003
Front Left (FL)
Front Right (FR)
iChannelNames 0
bmControls 0x0000
iTerminal 0
AudioControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 33
wTerminalType 0x0302 Headphones
bAssocTerminal 0
bSourceID 48
bCSourceID 24
bmControls 0x0000
iTerminal 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 32
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 1
bNumEndpoints 2
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 32
iInterface 0
AudioStreaming Interface Descriptor:
bLength 16
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 32
bmControls 0x00
bFormatType 1
bmFormats 0x00000001
PCM
bNrChannels 2
bmChannelConfig 0x00000003
Front Left (FL)
Front Right (FR)
iChannelNames 0
AudioStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bSubslotSize 2
bBitResolution 16
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0100 1x 256 bytes
bInterval 4
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 17
Transfer Type Isochronous
Synch Type None
Usage Type Feedback
wMaxPacketSize 0x0100 1x 256 bytes
bInterval 4
AudioStreaming Endpoint Descriptor:
bLength 8
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x00
bmControls 0x00
bLockDelayUnits 0 Undefined
wLockDelay 0x0000
Device Status: 0x0000
(Bus Powered)

172
misc/up4.lsusb Normal file
View File

@ -0,0 +1,172 @@
Bus 003 Device 002: ID 0a12:1244 Cambridge Silicon Radio, Ltd Shanling UP4
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x0a12 Cambridge Silicon Radio, Ltd
idProduct 0x1244
bcdDevice 36.05
iManufacturer 1 Shanling Digital Technology Development Co., Ltd.
iProduct 2 Shanling UP4
iSerial 3 ABCDEF0123456789
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x008d
bNumInterfaces 3
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 500mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 1 Control Device
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdADC 1.00
wTotalLength 0x002b
bInCollection 1
baInterfaceNr(0) 1
AudioControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 1
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bNrChannels 2
wChannelConfig 0x0003
Left Front (L)
Right Front (R)
iChannelNames 0
iTerminal 0
AudioControl Interface Descriptor:
bLength 13
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 2
bSourceID 1
bControlSize 2
bmaControls(0) 0x0001
Mute Control
bmaControls(1) 0x0002
Volume Control
bmaControls(2) 0x0002
Volume Control
iFeature 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 3
wTerminalType 0x0301 Speaker
bAssocTerminal 0
bSourceID 2
iTerminal 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 1
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioStreaming Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 1
bDelay 0 frames
wFormatTag 0x0001 PCM
AudioStreaming Interface Descriptor:
bLength 14
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 2
bBitResolution 16
bSamFreqType 2 Discrete
tSamFreq[ 0] 48000
tSamFreq[ 1] 44100
AudioStreaming Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x81
Sampling Frequency
MaxPacketsOnly
bLockDelayUnits 2 Decoded PCM samples
wLockDelay 0x0000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x03 EP 3 OUT
bmAttributes 1
Transfer Type Isochronous
Synch Type None
Usage Type Data
wMaxPacketSize 0x00c0 1x 192 bytes
bInterval 1
bRefresh 0
bSynchAddress 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 0
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.11
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 69
Report Descriptors:
** UNAVAILABLE **
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0010 1x 16 bytes
bInterval 8
Device Status: 0x0000
(Bus Powered)