[Nut-upsdev] Cyberpower 900AVR/BC900D newhidups problem

[Lincoln Turner]

> > HID descriptor too short (expected 8, got 0)
> 
> What does 'lsusb -vvv' say after the kernel usbhid driver is detached?
> (i.e. if you unplug and replug the device, make sure that you re-run
> newhidups once before running lsusb).

Well I detached it thoroughly by rmmoding usbhid altogether. Then
running lsusb -vvv gives (the relevant bits anyway):

Bus 002 Device 002: ID 0764:0005 Cyber Power System, Inc. Cyber Power UPS
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0
  bDeviceProtocol         0
  bMaxPacketSize0         8
  idVendor           0x0764 Cyber Power System, Inc.
  idProduct          0x0005 Cyber Power UPS
  bcdDevice            4.00
  iManufacturer           3
  iProduct                1
  iSerial                 0
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           41
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0
    bmAttributes         0x80
    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      90
         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

But I get this sort of thing from the kernel:

usb 2-2: lsusb timed out on ep0in len=0/255
usb 2-2: usbfs: USBDEVFS_CONTROL failed cmd lsusb rqt 128 rq 6 len 255 ret -110
usb 2-2: lsusb timed out on ep0in len=0/255
usb 2-2: usbfs: USBDEVFS_CONTROL failed cmd lsusb rqt 128 rq 6 len 255 ret -110
usb 2-2: lsusb timed out on ep0in len=0/90
usb 2-2: usbfs: USBDEVFS_CONTROL failed cmd lsusb rqt 129 rq 6 len 90 ret -110

And lsusb waits for a second or so timeout at the 'Report Descriptors'
bit, before reporting unavailable.

> > usb 2-2: Product: CPS RS232 USB BRIDGE for UPS
> 
> This makes me wonder if it is just a USB-to-serial bridge. If that
> were the case, newhidups would not know how to communicate with it -
> the cyberpower serial driver would have to be adapted instead.

Yeah, I feared the same thing. But the CPS tech I spoke to was adamant
that it has the same protocol as the 685avr which is newly supported
by newhidups.

I have to say I am unimpressed by cyberpower's refusal to release its
protocol details and disinterest in writing a UPS driver. They said
they'd be happy to give free UPSs to 'nut people' to reverse engineer,
just not provide the data. This seems very stupid. I'm inclined to
take this UPS back and buy an APC ES series. But the cyberpower is
cheap, so will maybe try one more round of fiddling with it if there
is anything else you'd suggest.

> > Oh, and I had to comment out these lines in libhid.h to get it to
> > compile:
> > /* ensure these exists (required for Solaris 10) */
> > //#ifndef u_int16_t
> > //      typedef uint16_t u_int16_t;
> > //#endif
> > //
> > //#ifndef u_int8_t
> > //      typedef uint8_t u_int8_t;
> > //#endif
> >
> > ... but I assume these were only relevant to solaris? Or is this a
> > problem?
> 
> What was the compilation error? It needs the types on the right-hand
> side, but they may not have been preprocessor defines. (The proper
> solution involves some autoconf magic, and I won't have time to fix
> this myself - any volunteers?)

gcc -I../include -O -Wall -Wsign-compare  -c newhidups.c
In file included from newhidups.c:25:
libhid.h:46: error: syntax error before "u_int16_t"
libhid.h:46: warning: useless keyword or type name in empty declaration
libhid.h:46: warning: empty declaration
libhid.h:50: error: syntax error before "u_int8_t"
libhid.h:50: warning: useless keyword or type name in empty declaration
libhid.h:50: warning: empty declaration
make: *** [newhidups.o] Error 1

sstreet drivers # gcc -v
Reading specs from /usr/lib/gcc/i386-pc-linux-gnu/3.4.5/specs
Configured with: /var/tmp/portage/gcc-3.4.5-r1/work/gcc-3.4.5/configure --prefix=/usr --bindir=/usr/i386-pc-linux-gnu/gcc-bin/3.4.5 --includedir=/usr/lib/gcc/i386-pc-linux-gnu/3.4.5/include --datadir=/usr/share/gcc-data/i386-pc-linux-gnu/3.4.5 --mandir=/usr/share/gcc-data/i386-pc-linux-gnu/3.4.5/man --infodir=/usr/share/gcc-data/i386-pc-linux-gnu/3.4.5/info --with-gxx-include-dir=/usr/lib/gcc/i386-pc-linux-gnu/3.4.5/include/g++-v3 --host=i386-pc-linux-gnu --build=i386-pc-linux-gnu --disable-altivec --enable-nls --without-included-gettext --with-system-zlib --disable-checking --disable-werror --disable-libunwind-exceptions --disable-multilib --disable-libgcj --enable-languages=c,c++,f77 --enable-shared --enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu
Thread model: posix
gcc version 3.4.5 (Gentoo 3.4.5-r1, ssp-3.4.5-1.0, pie-8.7.9)

libusb is version 0.1.11

Cheers,

Lincoln