USBErrorIO: LIBUSB_ERROR_IO is being logged

[Jason Wheatley]

Hi everyone,

Just set up my weather station again with Raspberry PI after failure of SD and house move.

Used a fresh install of Raspian Jessite Lite.

Installed all the dependencies as per https://pywws.readthedocs.io/en/latest/essentials/dependencies.html

Keep getting the following messages logged: -

2016-06-06 17:25:13:pywws.LiveLog:LIBUSB_ERROR_IO [-1]

Traceback (most recent call last):

  File "/usr/local/lib/python2.7/dist-packages/pywws/LiveLog.py", line 80, in LiveLog

    logged_only=(not tasks.has_live_tasks())):

  File "/usr/local/lib/python2.7/dist-packages/pywws/LogData.py", line 256, in live_data

    for data, ptr, logged in self.ws.live_data(logged_only=logged_only):

  File "/usr/local/lib/python2.7/dist-packages/pywws/WeatherStation.py", line 440, in live_data

    new_ptr = self.current_pos()

  File "/usr/local/lib/python2.7/dist-packages/pywws/WeatherStation.py", line 586, in current_pos

    self._read_fixed_block(0x0020), self.lo_fix_format['current_pos'])

  File "/usr/local/lib/python2.7/dist-packages/pywws/WeatherStation.py", line 642, in _read_fixed_block

    result += self._read_block(mempos)

  File "/usr/local/lib/python2.7/dist-packages/pywws/WeatherStation.py", line 630, in _read_block

    new_block = self.cusb.read_block(ptr)

  File "/usr/local/lib/python2.7/dist-packages/pywws/WeatherStation.py", line 265, in read_block

    if not self.dev.write_data(buf):

  File "/usr/local/lib/python2.7/dist-packages/pywws/device_libusb1.py", line 130, in write_data

    0x200, 0, str_buf, timeout=50)

  File "/usr/local/lib/python2.7/dist-packages/usb1.py", line 1331, in controlWrite

    sizeof(data), timeout)

  File "/usr/local/lib/python2.7/dist-packages/usb1.py", line 1310, in _controlTransfer

    mayRaiseUSBError(result)

  File "/usr/local/lib/python2.7/dist-packages/usb1.py", line 121, in mayRaiseUSBError

    raiseUSBError(value)

  File "/usr/local/lib/python2.7/dist-packages/usb1.py", line 117, in raiseUSBError

    raise STATUS_TO_EXCEPTION_DICT.get(value, USBError)(value)

USBErrorIO: LIBUSB_ERROR_IO [-1]

I installed the USB library by following the instruction sin the link above i.e. pip install libusb1

If anyone could throw any light on this I'd be most grateful.

Cheers,

Jason

[Jim Easterbrook]

On 06/06/16 17:39, Jason Wheatley wrote:
>
> Keep getting the following messages logged: -
>

> / File
> "/usr/local/lib/python2.7/dist-packages/pywws/device_libusb1.py", line
> 130, in write_data/
> / 0x200, 0, str_buf, timeout=50)/
> / File "/usr/local/lib/python2.7/dist-packages/usb1.py", line 1331, in
> controlWrite/
> / sizeof(data), timeout)/
> / File "/usr/local/lib/python2.7/dist-packages/usb1.py", line 1310, in
> _controlTransfer/
> / mayRaiseUSBError(result)/
> / File "/usr/local/lib/python2.7/dist-packages/usb1.py", line 121, in
> mayRaiseUSBError/
> / raiseUSBError(value)/
> / File "/usr/local/lib/python2.7/dist-packages/usb1.py", line 117, in
> raiseUSBError/
> / raise STATUS_TO_EXCEPTION_DICT.get(value, USBError)(value)/
> /USBErrorIO: LIBUSB_ERROR_IO [-1]/

>
> I installed the USB library by following the instruction sin the link

> above i.e. *pip install libusb1*

Did you also install libusb using apt-get install?

> If anyone could throw any light on this I'd be most grateful.

I assume you're getting the same errors with pywws-testweatherstation.
Check your user has permission to access the weather station's USB port
(which may require a udev rule) although usually that gives a more
helpful error message.

Otherwise try adding / removing various USB related bits to your
/boot/cmdline.txt. Debugging Pi USB problems is easier than it was, but
still seems to involve guess work.
--
Jim Easterbrook <http://www.jim-easterbrook.me.uk/>

[Jason Wheatley]

Thanks for reply Jim. Apologies for not reporting back sooner.

I wasn't getting errors with the discrete test. Strange!!! 

Anyhow unplugged station, re-booted and then plugged back in and all's been well so far.

Have Twitter problems now but will start a new post for that.

Thanks again for your help.

Jason