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社区首页 >问答首页 >STM32 USB音频设备.耳机.不能插入第二接口

问STM32 USB音频设备.耳机.不能插入第二接口
EN

Stack Overflow用户
提问于 2022-02-21 21:06:13
回答 1查看 545关注 0票数 0

目前，我正试图在STM32F407设备上创建一种能够播放主机音频流和发送从麦克风接收的音频样本的USB耳机。

USB设备拓扑如下(很抱歉质量不好)：拓扑学

我在这里使用两个端点。因此，我在USB描述符中描述了两个接口。

描述符如下所示：

代码语言：javascript
复制
static uint8_t usbd_audio_CfgDesc[AUDIO_CONFIG_DESC_SIZE] =
{
  /* Configuration 1 */
  0x09,                                 /* bLength */
  USB_CONFIGURATION_DESCRIPTOR_TYPE,    /* bDescriptorType */
  LOBYTE(AUDIO_CONFIG_DESC_SIZE),       /* wTotalLength  183 bytes*/
  HIBYTE(AUDIO_CONFIG_DESC_SIZE),      
  0x03,                                 /* bNumInterfaces */
  0x01,                                 /* bConfigurationValue */
  0x00,                                 /* iConfiguration */
  0xC0,                                 /* bmAttributes  BUS Powred*/
  0x32,                                 /* bMaxPower = 100 mA*/
  /* 09 byte*/
  
  /* USB Headset Standard interface descriptor */
  AUDIO_INTERFACE_DESC_SIZE,            /* bLength */
  USB_INTERFACE_DESCRIPTOR_TYPE,        /* bDescriptorType */
  0x00,                                 /* bInterfaceNumber */
  0x00,                                 /* bAlternateSetting */
  0x00,                                 /* bNumEndpoints */
  USB_DEVICE_CLASS_AUDIO,               /* bInterfaceClass */
  AUDIO_SUBCLASS_AUDIOCONTROL,          /* bInterfaceSubClass */
  AUDIO_PROTOCOL_UNDEFINED,             /* bInterfaceProtocol */
  0x00,                                 /* iInterface */
  /* 09 byte*/
  
  /* USB Headset Class-specific AC Interface Descriptor */
  0x0A,                                 /* bLength */
  AUDIO_INTERFACE_DESCRIPTOR_TYPE,      /* bDescriptorType */
  AUDIO_CONTROL_HEADER,                 /* bDescriptorSubtype */
  0x00,          /* 1.00 */             /* bcdADC */
  0x01,
  0x3C,                                 /* wTotalLength = 60*/
  0x00,
  0x02,                                 /* bInCollection */
  0x01,                                 /* baInterfaceNr(1) - OUT */
  0x02,                                 /* baInterfaceNr(2) - IN */
  /* 10 byte*/
  
  /* USB Microphone Input Terminal Descriptor */
  AUDIO_INPUT_TERMINAL_DESC_SIZE,       /* bLength */
  AUDIO_INTERFACE_DESCRIPTOR_TYPE,      /* bDescriptorType */
  AUDIO_CONTROL_INPUT_TERMINAL,         /* bDescriptorSubtype */
  0x01,                                 /* bTerminalID */
  0x01,                                 /* wTerminalType MICROPHONE   0x0201 */
  0x02,
  0x00,                                 /* bAssocTerminal */
  0x01,                                 /* bNrChannels */
  0x00,                                 /* wChannelConfig 0x0000  Mono */
  0x00,
  0x00,                                 /* iChannelNames */
  0x00,                                 /* iTerminal */
  /* 12 byte*/
  
  /*USB Microphone Output Terminal Descriptor */
  0x09,      /* bLength */
  AUDIO_INTERFACE_DESCRIPTOR_TYPE,      /* bDescriptorType */
  AUDIO_CONTROL_OUTPUT_TERMINAL,        /* bDescriptorSubtype */
  0x02,                                 /* bTerminalID */
  0x01,                                 /* wTerminalType  USB_STREAMING 0x0101*/
  0x01,
  0x00,                                 /* bAssocTerminal */
  0x01,                                 /* bSourceID */
  0x00,                                 /* iTerminal */
  /* 09 byte*/

  /* USB Speaker Input Terminal Descriptor */
  AUDIO_INPUT_TERMINAL_DESC_SIZE,       /* bLength */
  AUDIO_INTERFACE_DESCRIPTOR_TYPE,      /* bDescriptorType */
  AUDIO_CONTROL_INPUT_TERMINAL,         /* bDescriptorSubtype */
  0x05,                                 /* bTerminalID */
  0x01,                                 /* wTerminalType AUDIO_TERMINAL_USB_STREAMING   0x0101 */
  0x01,
  0x00,                                 /* bAssocTerminal */
  0x01,                                 /* bNrChannels */
  0x00,                                 /* wChannelConfig 0x0000  Mono */
  0x00,
  0x00,                                 /* iChannelNames */
  0x00,                                 /* iTerminal */
  /* 12 byte*/

  /* USB Speaker Audio Feature Unit Descriptor */
  0x09,                                 /* bLength */
  AUDIO_INTERFACE_DESCRIPTOR_TYPE,      /* bDescriptorType */
  AUDIO_CONTROL_FEATURE_UNIT,           /* bDescriptorSubtype */
  AUDIO_OUT_FEATURE_UNIT_ID,            /* bUnitID */
  0x05,                                 /* bSourceID */
  0x01,                                 /* bControlSize */
  AUDIO_CONTROL_MUTE,                   /* bmaControls(0) */
  0x00,                                 /* bmaControls(1) */
  0x00,                                 /* iTerminal */
  /* 09 byte*/

  /* USB Speaker Output Terminal Descriptor */
  0x09,                                 /* bLength */
  AUDIO_INTERFACE_DESCRIPTOR_TYPE,      /* bDescriptorType */
  AUDIO_CONTROL_OUTPUT_TERMINAL,        /* bDescriptorSubtype */
  0x03,                                 /* bTerminalID */
  0x01,                                 /* wTerminalType  0x0301*/
  0x03,
  0x00,                                 /* bAssocTerminal */
  0x04,                                 /* bSourceID */
  0x00,                                 /* iTerminal */
  /* 09 byte*/

  /* USB Speaker Standard AS Interface Descriptor - Audio Streaming Zero Bandwith */
  /* Interface 1, Alternate Setting 0                                             */
  AUDIO_INTERFACE_DESC_SIZE,  /* bLength */
  USB_INTERFACE_DESCRIPTOR_TYPE,        /* bDescriptorType */
  0x01,                                 /* bInterfaceNumber */
  0x00,                                 /* bAlternateSetting */
  0x00,                                 /* bNumEndpoints */
  USB_DEVICE_CLASS_AUDIO,               /* bInterfaceClass */
  AUDIO_SUBCLASS_AUDIOSTREAMING,        /* bInterfaceSubClass */
  AUDIO_PROTOCOL_UNDEFINED,             /* bInterfaceProtocol */
  0x00,                                 /* iInterface */
  /* 09 byte*/
  
  /* USB Speaker Standard AS Interface Descriptor - Audio Streaming Operational */
  /* Interface 1, Alternate Setting 1                                           */
  AUDIO_INTERFACE_DESC_SIZE,            /* bLength */
  USB_INTERFACE_DESCRIPTOR_TYPE,        /* bDescriptorType */
  0x01,                                 /* bInterfaceNumber */
  0x01,                                 /* bAlternateSetting */
  0x01,                                 /* bNumEndpoints */
  USB_DEVICE_CLASS_AUDIO,               /* bInterfaceClass */
  AUDIO_SUBCLASS_AUDIOSTREAMING,        /* bInterfaceSubClass */
  AUDIO_PROTOCOL_UNDEFINED,             /* bInterfaceProtocol */
  0x00,                                 /* iInterface */
  /* 09 byte*/
  
  /* USB Speaker Audio Streaming Interface Descriptor */
  AUDIO_STREAMING_INTERFACE_DESC_SIZE,  /* bLength */
  AUDIO_INTERFACE_DESCRIPTOR_TYPE,      /* bDescriptorType */
  AUDIO_STREAMING_GENERAL,              /* bDescriptorSubtype */
  0x05,                                 /* bTerminalLink */
  0x01,                                 /* bDelay */
  0x01,                                 /* wFormatTag AUDIO_FORMAT_PCM  0x0001*/
  0x00,
  /* 07 byte*/
  
  /* USB Speaker Audio Type III Format Interface Descriptor */
  0x0B,                                 /* bLength */
  AUDIO_INTERFACE_DESCRIPTOR_TYPE,      /* bDescriptorType */
  AUDIO_STREAMING_FORMAT_TYPE,          /* bDescriptorSubtype */
  AUDIO_FORMAT_TYPE_III,                /* bFormatType */ 
  0x02,                                 /* bNrChannels */
  0x02,                                 /* bSubFrameSize :  2 Bytes per frame (16bits) */
  16,                                   /* bBitResolution (16-bits per sample) */ 
  0x01,                                 /* bSamFreqType only one frequency supported */ 
  SAMPLE_FREQ(USBD_AUDIO_FREQ),         /* Audio sampling frequency coded on 3 bytes */
  /* 11 byte*/
  
  /* Endpoint 1 - Standard Descriptor */
  AUDIO_STANDARD_ENDPOINT_DESC_SIZE,    /* bLength */
  USB_ENDPOINT_DESCRIPTOR_TYPE,         /* bDescriptorType */
  AUDIO_OUT_EP,                         /* bEndpointAddress 1 out endpoint*/
  USB_ENDPOINT_TYPE_ISOCHRONOUS,        /* bmAttributes */
  AUDIO_PACKET_SZE(USBD_AUDIO_FREQ, 2), /* wMaxPacketSize in Bytes (Freq(Samples)*2(Stereo)*2(HalfWord)) */
  0x01,                                 /* bInterval */
  0x00,                                 /* bRefresh */
  0x00,                                 /* bSynchAddress */
  /* 09 byte*/
  
  /* Endpoint - Audio Streaming Descriptor*/
  AUDIO_STREAMING_ENDPOINT_DESC_SIZE,   /* bLength */
  AUDIO_ENDPOINT_DESCRIPTOR_TYPE,       /* bDescriptorType */
  AUDIO_ENDPOINT_GENERAL,               /* bDescriptor */
  0x00,                                 /* bmAttributes */
  0x00,                                 /* bLockDelayUnits */
  0x00,                                 /* wLockDelay */
  0x00,
  /* 07 byte*/
  
  /* USB Microphone Standard AS Interface Descriptor - Audio Streaming Zero Bandwith */
  /* Interface 2, Alternate Setting 0                                             */
  AUDIO_INTERFACE_DESC_SIZE,  /* bLength */
  USB_INTERFACE_DESCRIPTOR_TYPE,        /* bDescriptorType */
  0x02,                                 /* bInterfaceNumber */
  0x00,                                 /* bAlternateSetting */
  0x00,                                 /* bNumEndpoints */
  USB_DEVICE_CLASS_AUDIO,               /* bInterfaceClass */
  AUDIO_SUBCLASS_AUDIOSTREAMING,        /* bInterfaceSubClass */
  AUDIO_PROTOCOL_UNDEFINED,             /* bInterfaceProtocol */
  0x00,                                 /* iInterface */
  /* 09 byte*/
  
  /* USB Microphone Standard AS Interface Descriptor - Audio Streaming Operational */
  /* Interface 2, Alternate Setting 1                                           */
  AUDIO_INTERFACE_DESC_SIZE,  /* bLength */
  USB_INTERFACE_DESCRIPTOR_TYPE,        /* bDescriptorType */
  0x02,                                 /* bInterfaceNumber */
  0x01,                                 /* bAlternateSetting */
  0x01,                                 /* bNumEndpoints */
  USB_DEVICE_CLASS_AUDIO,               /* bInterfaceClass */
  AUDIO_SUBCLASS_AUDIOSTREAMING,        /* bInterfaceSubClass */
  AUDIO_PROTOCOL_UNDEFINED,             /* bInterfaceProtocol */
  0x00,                                 /* iInterface */
  /* 09 byte*/
  
  /* USB Microphone Audio Streaming Interface Descriptor */
  AUDIO_STREAMING_INTERFACE_DESC_SIZE,  /* bLength */
  AUDIO_INTERFACE_DESCRIPTOR_TYPE,      /* bDescriptorType */
  AUDIO_STREAMING_GENERAL,              /* bDescriptorSubtype */
  0x02,                                 /* bTerminalLink */
  0x01,                                 /* bDelay */
  0x01,                                 /* wFormatTag AUDIO_FORMAT_PCM  0x0001*/
  0x00,
  /* 07 byte*/
  
  /* USB Microphone Type I Format Interface Descriptor */
  0x0B,                                 /* bLength */
  AUDIO_INTERFACE_DESCRIPTOR_TYPE,      /* bDescriptorType */
  AUDIO_STREAMING_FORMAT_TYPE,          /* bDescriptorSubtype */
  AUDIO_FORMAT_TYPE_I,                /* bFormatType */ 
  0x01,                                 /* bNrChannels */
  0x02,                                 /* bSubFrameSize :  2 Bytes per frame (16bits) */
  16,                                   /* bBitResolution (16-bits per sample) */ 
  0x01,                                 /* bSamFreqType only one frequency supported */ 
  SAMPLE_FREQ(USBD_IN_FREQ),         /* Audio sampling frequency coded on 3 bytes */
  /* 11 byte*/
  
  /* Endpoint 1 - Standard Descriptor */
  AUDIO_STANDARD_ENDPOINT_DESC_SIZE,    /* bLength */
  USB_ENDPOINT_DESCRIPTOR_TYPE,         /* bDescriptorType */
  AUDIO_IN_EP,                         /* bEndpointAddress 1 out endpoint*/
  USB_ENDPOINT_TYPE_ISOCHRONOUS,        /* bmAttributes */
  AUDIO_PACKET_SZE(USBD_IN_FREQ, 1),    /* wMaxPacketSize in Bytes (Freq(Samples)*2(Stereo)*2(HalfWord)) */
  0x01,                                 /* bInterval */
  0x00,                                 /* bRefresh */
  0x00,                                 /* bSynchAddress */
  /* 09 byte*/
  
  /* Endpoint - Audio Microphone Descriptor*/
  AUDIO_STREAMING_ENDPOINT_DESC_SIZE,   /* bLength */
  AUDIO_ENDPOINT_DESCRIPTOR_TYPE,       /* bDescriptorType */
  AUDIO_ENDPOINT_GENERAL,               /* bDescriptor */
  0x00,                                 /* bmAttributes */
  0x00,                                 /* bLockDelayUnits */
  0x00,                                 /* wLockDelay */
  0x00,
  /* 07 byte*/
} ;

当我连接这个设备到主机时，主机似乎成功地枚举了它。

主机的日志(Linux操作系统)：

代码语言：javascript
复制
[12221.001223] usb 3-4: New USB device found, idVendor=0483, idProduct=5730, bcdDevice= 2.00
[12221.001246] usb 3-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[12221.001248] usb 3-4: Product: STM32 AUDIO Streaming in FS Mode
[12221.001250] usb 3-4: Manufacturer: STMicroelectronics
[12221.001252] usb 3-4: SerialNumber: 347E37553434
[12221.037373] mc: Linux media interface: v0.10
[12221.073785] usbcore: registered new interface driver snd-usb-audio

这个新连接的设备能够播放来自主机的音频流。但当我试图录制一些东西时，我在日志中看到了以下信息：

代码语言：javascript
复制
[12758.466715] usb 3-4: 2:1: usb_set_interface failed (-32)
[12758.466894] usb 3-4: 2:0: usb_set_interface failed (-32)
[12758.826837] usb 3-4: 2:0: usb_set_interface failed (-32)
[12758.827398] usb 3-4: 2:1: usb_set_interface failed (-32)

看来，主机没有为设备麦克风到主机之间的音频流设置第二个接口。

当我尝试使用Wireshark嗅探USB数据包时，我看到了以下情况：

  1. 设备成功地发送了他所有的描述符。
  2. 主机试图为接口1设置不同的alt设置-所有请求都已成功完成。
  3. 主机试图对接口2执行相同的操作--由于错误“断管”而失败。

设置接口1.请求：

代码语言：javascript
复制
USB URB
    [Source: host]
    [Destination: 3.8.0]
    URB id: 0xffff8ce44b991e40
    URB type: URB_SUBMIT ('S')
    URB transfer type: URB_CONTROL (0x02)
    Endpoint: 0x00, Direction: OUT
    Device: 8
    URB bus id: 3
    Device setup request: relevant (0)
    Data: present (0)
    URB sec: 1645475418
    URB usec: 822919
    URB status: Operation now in progress (-EINPROGRESS) (-115)
    URB length [bytes]: 0
    Data length [bytes]: 0
    [Response in: 32]
    Interval: 0
    Start frame: 0
    Copy of Transfer Flags: 0x00000000
    Number of ISO descriptors: 0
Setup Data
    bmRequestType: 0x01
    bRequest: SET INTERFACE (11)
    bAlternateSetting: 0
    wInterface: 1
    wLength: 0

设置接口1.响应：

代码语言：javascript
复制
USB URB
    [Source: 3.8.0]
    [Destination: host]
    URB id: 0xffff8ce44b991e40
    URB type: URB_COMPLETE ('C')
    URB transfer type: URB_CONTROL (0x02)
    Endpoint: 0x00, Direction: OUT
    Device: 8
    URB bus id: 3
    Device setup request: not relevant ('-')
    Data: not present ('>')
    URB sec: 1645475418
    URB usec: 822989
    URB status: Success (0)
    URB length [bytes]: 0
    Data length [bytes]: 0
    [Request in: 31]
    [Time from request: 0.000070000 seconds]
    Unused Setup Header
    Interval: 0
    Start frame: 0
    Copy of Transfer Flags: 0x00000000
    Number of ISO descriptors: 0

设置接口2.请求：

代码语言：javascript
复制
USB URB
    [Source: host]
    [Destination: 3.8.0]
    URB id: 0xffff8ce63c2d2840
    URB type: URB_SUBMIT ('S')
    URB transfer type: URB_CONTROL (0x02)
    Endpoint: 0x00, Direction: OUT
    Device: 8
    URB bus id: 3
    Device setup request: relevant (0)
    Data: present (0)
    URB sec: 1645475418
    URB usec: 823040
    URB status: Operation now in progress (-EINPROGRESS) (-115)
    URB length [bytes]: 0
    Data length [bytes]: 0
    [Response in: 34]
    Interval: 0
    Start frame: 0
    Copy of Transfer Flags: 0x00000000
    Number of ISO descriptors: 0
Setup Data
    bmRequestType: 0x01
    bRequest: SET INTERFACE (11)
    bAlternateSetting: 0
    wInterface: 2
    wLength: 0

设置接口2.响应：

代码语言：javascript
复制
USB URB
    [Source: 3.8.0]
    [Destination: host]
    URB id: 0xffff8ce63c2d2840
    URB type: URB_COMPLETE ('C')
    URB transfer type: URB_CONTROL (0x02)
    Endpoint: 0x00, Direction: OUT
    Device: 8
    URB bus id: 3
    Device setup request: not relevant ('-')
    Data: not present ('>')
    URB sec: 1645475418
    URB usec: 823198
    URB status: Broken pipe (-EPIPE) (-32)
    URB length [bytes]: 0
    Data length [bytes]: 0
    [Request in: 33]
    [Time from request: 0.000158000 seconds]
    Unused Setup Header
    Interval: 0
    Start frame: 0
    Copy of Transfer Flags: 0x00000000
    Number of ISO descriptors: 0

我将整个wireshark .cap文件放入谷歌驱动器磁盘中：

在我的github (分支任务/usb_耳机)中可以找到我的整个项目的代码。

我尝试将两个音频流的采样频率设置为48 kHz。根据上面的描述子，音频流从主机-48 the，立体声；音频流到主机-16 the，单声道。同样的错误。

任何帮助都将不胜感激。

usb
stm32f4discovery
audio
EN

回答 1

Stack Overflow用户

发布于 2022-06-17 23:30:00

我也解决了一个新问题。

我的USB TX FIFO大小配置出现了错误。

如果有人感兴趣，你可以在这里看到我的代码- 接口

票数 1
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：

https://stackoverflow.com/questions/71213031

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