[Nut-upsuser] ST7 RS232 USB Bridge (STMicroelectronics) UPS

[Dâniel Fraga]

	I used a brazilian UPS from "TS-Shara" which uses the megatec
serial protocol and it works perfectly. Now I have another one from the
same brand (TS-Shara) and it uses a USB cable. I found the following:

T:  Bus=01 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#=  3 Spd=1.5 MxCh= 0
D:  Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
P:  Vendor=0483 ProdID=0035 Rev= 2.00
S:  Manufacturer=STMicroelectronics
S:  Product=ST7 RS232 USB BRIDGE
C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr= 20mA
I:* If#= 0 Alt= 0 #EPs= 2 Cls=03(HID  ) Sub=00 Prot=00 Driver=usbhid
E:  Ad=81(I) Atr=03(Int.) MxPS=   8 Ivl=10ms
E:  Ad=02(O) Atr=03(Int.) MxPS=   8 Ivl=10ms

	And lsusb -v:

Bus 001 Device 003: ID 0483:0035 SGS Thomson Microelectronics 
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0         8
  idVendor           0x0483 SGS Thomson Microelectronics
  idProduct          0x0035 
  bcdDevice            2.00
  iManufacturer           3 
  iProduct                1 
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           41
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0x80
      (Bus Powered)
    MaxPower               20mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         3 Human Interface Devices
      bInterfaceSubClass      0 No Subclass
      bInterfaceProtocol      0 None
      iInterface              0 
        HID Device Descriptor:
          bLength                 9
          bDescriptorType        33
          bcdHID               1.10
          bCountryCode           33 US
          bNumDescriptors         1
          bDescriptorType        34 Report
          wDescriptorLength      29
         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     0x0008  1x 8 bytes
        bInterval              10
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0008  1x 8 bytes
        bInterval              10

	***

	As you can see above, if I load usbhid module, it's attached to
this device. I tried the suggestions made in the mailing list about
using usbserial generic module, but without success...

	I'm afraid this UPS still uses the megatec protocol with a
serial to usb converter. So I try the energizer protocol
(with /dev/hiddev0), but it doesn't work:

Network UPS Tools - Energizer USB UPS driver 0.02 (2.0.5)

Warning: This is an experimental driver.
Some features may not function correctly.

Error (SUSAGE) while talking to the UPS

	***

	I tried newhidups, hidups also without success...

	Any hints? Thank you very much!

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