STC8H8K64U 的 USB 功能测试(未成功)

对 STC8H8K64U 的 USB 功能测试, 因为存在很多问题并且未能解释/解决, 就不写到系列里了, 把记录放上来抛砖引玉吧.

代码

测试代码下载地址 http://www.stcmcudata.com/STC8F-DATASHEET/STC8H8K64U-DEMO-CODE.ZIP , 使用其中的"39-通过USB发送命令读取ADC测试程序", 用于创建一个 USB HID 设备.

连线

USB口的4线顺序

USB Layout: 5V | D- | D+ | GND

连线

USB      STC8H8K64U

5V    -> VCC        # 这一部分的连线会有其它情况

D-    -> P3.0

D+    -> P3.1

         P3.2       # 拉高为运行用户代码, 拉低为ISP模式

GND   -> GND

VCC的电压, 对USB功能是否工作会有影响, 下面分3种情况说明. 测试的是一片lqfp48封装的 STC8H8K64U, 丝印是B版本, 这些问题也许是个体差异, 需要更多测试判断

测试

VCC直连5V

Win10 能检测到 USB 设备, 但是不识别.

Ubuntu20.04 dmesg 输出

[ 2483.709716] usb 2-3: new full-speed USB device number 31 using xhci_hcd

[ 2483.837738] usb 2-3: device descriptor read/64, error -71

[ 2484.073747] usb 2-3: device descriptor read/64, error -71

[ 2484.309721] usb 2-3: new full-speed USB device number 32 using xhci_hcd

[ 2484.437740] usb 2-3: device descriptor read/64, error -71

[ 2484.673739] usb 2-3: device descriptor read/64, error -71

[ 2484.781788] usb usb2-port3: attempt power cycle

[ 2485.437650] usb 2-3: new full-speed USB device number 33 using xhci_hcd

[ 2485.437786] usb 2-3: Device not responding to setup address.

[ 2485.645720] usb 2-3: Device not responding to setup address.

[ 2485.853705] usb 2-3: device not accepting address 33, error -71

[ 2485.981717] usb 2-3: new full-speed USB device number 34 using xhci_hcd

[ 2486.002557] usb 2-3: device descriptor read/8, error -71

[ 2486.130718] usb 2-3: device descriptor read/8, error -71

[ 2486.237826] usb usb2-port3: unable to enumerate USB device

VCC经两个1N4148串联降压到3.7V

Win10 能检测到 USB 设备, 但是不识别.

Ubuntu20.04 的 dmesg, 此时能检测到, 但是应该是有问题的. 在刚开始测试时, 会输出与上面错误状态一样的dmesg

[ 2035.215017] usb 2-3: new full-speed USB device number 29 using xhci_hcd

[ 2035.343043] usb 2-3: device descriptor read/64, error -71

[ 2035.601374] usb 2-3: New USB device found, idVendor=5354, idProduct=4380, bcdDevice= 1.00

[ 2035.601389] usb 2-3: New USB device strings: Mfr=1, Product=2, SerialNumber=0

[ 2035.601395] usb 2-3: Product: STC USB Device

[ 2035.601399] usb 2-3: Manufacturer: STC

[ 2036.170978] hid: raw HID events driver (C) Jiri Kosina

[ 2036.176067] usbhid 2-3:1.0: can't add hid device: -71

[ 2036.176082] usbhid: probe of 2-3:1.0 failed with error -71

[ 2036.176133] usbcore: registered new interface driver usbhid

[ 2036.176136] usbhid: USB HID core driver

[ 2083.254934] usb 2-3: USB disconnect, device number 29

[ 2085.559301] usb 2-3: new full-speed USB device number 30 using xhci_hcd

[ 2085.709303] usb 2-3: New USB device found, idVendor=5354, idProduct=4380, bcdDevice= 1.00

[ 2085.709318] usb 2-3: New USB device strings: Mfr=1, Product=2, SerialNumber=0

[ 2085.709323] usb 2-3: Product: STC USB Device

[ 2085.709328] usb 2-3: Manufacturer: STC

[ 2085.711834] usbhid 2-3:1.0: can't add hid device: -71

[ 2085.711867] usbhid: probe of 2-3:1.0 failed with error -71

[ 2340.604515] usb 2-3: USB disconnect, device number 30

VCC使用USB2TTL提供的3.3V

USB 与 USB2TTL 共地

Win10 情况依旧, 在很少数的情况, 能识别出 HID Input 设备, 但是上位机软件无法检测识别.

Ubuntu20.04 可以正常识别, 分两种情况:

将P32通过2KR电阻接3.3V上拉, 最初加电未正常工作, 经过两次加电, 能看到正确的输出

[ 1902.282379] usb 2-2: new full-speed USB device number 42 using xhci_hcd

[ 1902.432752] usb 2-2: New USB device found, idVendor=5354, idProduct=4380, bcdDevice= 1.00

[ 1902.432766] usb 2-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0

[ 1902.432771] usb 2-2: Product: STC USB Device

[ 1902.432776] usb 2-2: Manufacturer: STC

[ 1902.436845] input: STC STC USB Device as /devices/pci0000:00/0000:00:14.0/usb2/2-2/2-2:1.0/0003:5354:4380.0003/input/input22

[ 1902.494766] hid-generic 0003:5354:4380.0003: input,hidraw0: USB HID v1.01 Device [STC STC USB Device] on usb-0000:00:14.0-2/input0

USB设备信息

$ lsusb -v

Bus 002 Device 042: ID 5354:4380 Meyer Instruments (MIS) STC USB Device

Couldn't open device, some information will be missing

Device Descriptor:

  bLength                18

  bDescriptorType         1

  bcdUSB               2.00

  bDeviceClass            0 

  bDeviceSubClass         0 

  bDeviceProtocol         0 

  bMaxPacketSize0        64

  idVendor           0x5354 Meyer Instruments (MIS)

  idProduct          0x4380 

  bcdDevice            1.00

  iManufacturer           1 

  iProduct                2 

  iSerial                 0 

  bNumConfigurations      1

  Configuration Descriptor:

    bLength                 9

    bDescriptorType         2

    wTotalLength       0x0029

    bNumInterfaces          1

    bConfigurationValue     1

    iConfiguration          0 

    bmAttributes         0x80

      (Bus Powered)

    MaxPower              100mA

    Interface Descriptor:

      bLength                 9

      bDescriptorType         4

      bInterfaceNumber        0

      bAlternateSetting       0

      bNumEndpoints           2

      bInterfaceClass         3 Human Interface Device

      bInterfaceSubClass      0 

      bInterfaceProtocol      0 

      iInterface              0 

        HID Device Descriptor:

          bLength                 9

          bDescriptorType        33

          bcdHID               1.01

          bCountryCode            0 Not supported

          bNumDescriptors         1

          bDescriptorType        34 Report

          wDescriptorLength      27

         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     0x0040  1x 64 bytes

        bInterval               1

      Endpoint Descriptor:

        bLength                 7

        bDescriptorType         5

        bEndpointAddress     0x01  EP 1 OUT

        bmAttributes            3

          Transfer Type            Interrupt

          Synch Type               None

          Usage Type               Data

        wMaxPacketSize     0x0040  1x 64 bytes

        bInterval               1

P32悬空, 会进入ISP模式

[ 1645.193000] usb 2-2: new full-speed USB device number 30 using xhci_hcd

[ 1645.341751] usb 2-2: device descriptor read/all, error -71

[ 1645.468940] usb 2-2: new full-speed USB device number 31 using xhci_hcd

[ 1645.597259] usb 2-2: Device not responding to setup address.

[ 1645.805130] usb 2-2: Device not responding to setup address.

[ 1646.012966] usb 2-2: device not accepting address 31, error -71

[ 1646.013086] usb usb2-port2: attempt power cycle

[ 1646.668947] usb 2-2: new full-speed USB device number 32 using xhci_hcd

[ 1646.669156] usb 2-2: Device not responding to setup address.

[ 1646.877105] usb 2-2: Device not responding to setup address.

[ 1647.084924] usb 2-2: device not accepting address 32, error -71

[ 1647.212913] usb 2-2: new full-speed USB device number 33 using xhci_hcd

[ 1647.238924] usb 2-2: New USB device found, idVendor=34bf, idProduct=1001, bcdDevice= 1.00

[ 1647.238934] usb 2-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0

[ 1647.238939] usb 2-2: Product: USB-ISP

[ 1647.238942] usb 2-2: Manufacturer: STC

[ 1647.242464] input: STC USB-ISP as /devices/pci0000:00/0000:00:14.0/usb2/2-2/2-2:1.0/0003:34BF:1001.0002/input/input21

[ 1647.301225] hid-generic 0003:34BF:1001.0002: input,hidraw0: USB HID v1.01 Device [STC USB-ISP] on usb-0000:00:14.0-2/input0

lsusb -v

Bus 002 Device 033: ID 34bf:1001 STC USB-ISP