查找USB3.0设备连接的位置

Question

我想在linux命令行中读取串行输入(举个例子)，但我无法找到附加设备(Arduino)路径。

我能辨认出这个装置：

# lsusb
Bus 005 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 003: ID 2341:0043 Arduino SA Uno R3 (CDC ACM)  <- this one
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

但是dmesg只显示与此相关的消息。

# dmesg | grep usb
[15026545.556311] usb 4-1: new full-speed USB device number 3 using xhci-hcd
[15026545.697929] usb 4-1: ep 0x82 - rounding interval to 1024 microframes, ep desc says 2040 microframes

同样让我困惑的是，lspci并没有展示这个装置：

# lspci
00:01.0 PCI bridge: Marvell Technology Group Ltd. Device 6820 (rev 04)
00:02.0 PCI bridge: Marvell Technology Group Ltd. Device 6820 (rev 04)
00:03.0 PCI bridge: Marvell Technology Group Ltd. Device 6820 (rev 04)
01:00.0 Network controller: Qualcomm Atheros AR9287 Wireless Network Adapter (PCI-Express) (rev 01)
02:00.0 Network controller: Qualcomm Atheros QCA986x/988x 802.11ac Wireless Network Adapter

查看/dev目录：

# ls /dev/
autofs              kmsg                network_latency     ram4                ttyS12
btrfs-control       log                 network_throughput  ram5                ttyS13
bus                 mapper              null                ram6                ttyS14
console             mem                 port                ram7                ttyS15
cpu_dma_latency     memory_bandwidth    ppp                 ram8                ttyS2
full                mmcblk0             ptmx                ram9                ttyS3
fuse                mmcblk0boot0        pts                 random              ttyS4
hwrng               mmcblk0boot1        ram0                root                ttyS5
i2c-0               mmcblk0p1           ram1                rtc0                ttyS6
i2c-1               mmcblk0rpmb         ram10               shm                 ttyS7
i2c-2               mtd0                ram11               snd                 ttyS8
i2c-3               mtd0ro              ram12               spidev0.2           ttyS9
i2c-4               mtd1                ram13               tty                 ubi_ctrl
i2c-5               mtd1ro              ram14               ttyS0               urandom
i2c-6               mtdblock0           ram15               ttyS1               watchdog
i2c-7               mtdblock1           ram2                ttyS10              watchdog0
i2c-8               net                 ram3                ttyS11              zero

我能找到这些东西：

1. 没有创建ttyUSB*/ttyACM*路径
2. 设备的路径是/dev/bus/usb/004/003
3. USB3.0应该使用xhci-hcd。

还有一个输出，使我更加困惑(表示2(错误)的iProduct行)：

# lsusb -v -s 004:003

Bus 004 Device 003: ID 2341:0043 Arduino SA Uno R3 (CDC ACM)
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            2 Communications
  bDeviceSubClass         0
  bDeviceProtocol         0
  bMaxPacketSize0         8
  idVendor           0x2341 Arduino SA
  idProduct          0x0043 Uno R3 (CDC ACM)
  bcdDevice            0.01
  iManufacturer           1 Arduino (www.arduino.cc)
  iProduct                2 (error)
  iSerial               220 8553130343135121F1A0
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           62
    bNumInterfaces          2
    bConfigurationValue     1
    iConfiguration          0
    bmAttributes         0xc0
      Self Powered
    MaxPower              100mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         2 Communications
      bInterfaceSubClass      2 Abstract (modem)
      bInterfaceProtocol      1 AT-commands (v.25ter)
      iInterface              0
      CDC Header:
        bcdCDC               10.01
      CDC ACM:
        bmCapabilities       0x06
          sends break
          line coding and serial state
      CDC Union:
        bMasterInterface        0
        bSlaveInterface         1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0008  1x 8 bytes
        bInterval             255
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass        10 CDC Data
      bInterfaceSubClass      0 Unused
      bInterfaceProtocol      0
      iInterface              0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x04  EP 4 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               1
Device Status:     0x0000
  (Bus Powered)

这是设备在这个环境中出现故障的迹象吗？你能帮我找出这个设备的附加地址吗？

背景信息:我在这里运行的系统是TurrisOS (基于OpenWrt)。测试也是Debian/Mint/Ubuntu/Manjaro，所有这些都是没有任何问题的USB连接(设备本身没有损坏)。

编辑:这是安装usbserial驱动程序时与dmesg相关的输出：

[15707335.904584] usbserial: USB Serial support registered for carelink
[15707335.904622] usbserial: USB Serial support registered for zio
[15707335.904657] usbserial: USB Serial support registered for funsoft
[15707335.904686] usbserial: USB Serial support registered for flashloader
[15707335.904714] usbserial: USB Serial support registered for google
[15707335.904743] usbserial: USB Serial support registered for libtransistor
[15707335.904771] usbserial: USB Serial support registered for vivopay
[15707335.904802] usbserial: USB Serial support registered for moto_modem
[15707335.904832] usbserial: USB Serial support registered for motorola_tetra
[15707335.904863] usbserial: USB Serial support registered for novatel_gps
[15707335.904891] usbserial: USB Serial support registered for hp4x
[15707335.904917] usbserial: USB Serial support registered for suunto
[15707335.904944] usbserial: USB Serial support registered for siemens_mpi
[15707336.867539] usbcore: registered new interface driver ti_usb_3410_5052
[15707336.867582] usbserial: USB Serial support registered for TI USB 3410 1 port adapter
[15707336.867611] usbserial: USB Serial support registered for TI USB 5052 2 port adapter
[15721145.188760] usb 4-1: new full-speed USB device number 4 using xhci-hcd
[15721145.330360] usb 4-1: ep 0x82 - rounding interval to 1024 microframes, ep desc says 2040 microframes

编辑2:当我在谷歌上搜索时，我发现这个脚本很明显地宣称，我需要：

opkg install kmod-usb-acm

为了连接这些设备。

Answer 1

您需要内核模块来识别Arduino并自动创建串口设备。

根据OpenWrt的文档：将Arduino连接到OpenWrt：

请安装以下软件包(如果您在终端或LuCi软件页面上)kmod-usb串行- are 3116 kmod-usb系列-belkin kmod-usb串行-ch341 kmod-usb串行-cp210x kmod-usb串行-ftdi kmod-usb串行-mct kmod串行-mos7720 kmod-usb串行-6858 kmod-usb串行-pl2303 kmod-usb串行-usb串行-ti-usb实际上您可能只需要其中之一。在您的arduino (或克隆)中使用的usb到串行芯片是什么？他们不需要太多的空间无论如何，所以如果你不确定或懒惰，你可以安装所有。

正如注释中所述，在该列表中还可能需要添加kmod-usb-acm。