FreeBSD problem with reset

[UffeJakobsen]

Hi,

On FreeBSD the reset issued during connect is no good - and prevents usctmc from working (throws exception). If I remove/disable the exception is works fine.

I suspect that you've has/seen the same problem with eg Windows ? At lease I can see that usbtmc.py line 255 has the following construction:

if os.name == 'posix': self.device.reset()

That needs to be extended to specificly check for FreeBSD (using os.platform or os.uname ???)

Please let me know if you need more info /Uffe

[alexforencich]

Interesting. Can you post the output of os.platform and os.uname on your system?

[UffeJakobsen]

Here you are

os.name 'posix'

os.uname() ('FreeBSD', 'asus-u32u', '10.0-RELEASE-p1', 'FreeBSD 10.0-RELEASE-p1 #0: Tue Apr 8 06:45:06 UTC 2014 root@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC', 'amd64')

platform.system() 'FreeBSD'

platform.release() '10.0-RELEASE-p1'

platform.version() 'FreeBSD 10.0-RELEASE-p1 #0: Tue Apr 8 06:45:06 UTC 2014 root@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC'

platform.uname()
('FreeBSD', 'asus-u32u', '10.0-RELEASE-p1', 'FreeBSD 10.0-RELEASE-p1 #0: Tue Apr 8 06:45:06 UTC 2014 root@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC', 'amd64', 'amd64')

/Uffe

[alexforencich]

Thanks. Also, what exception is it throwing?

[UffeJakobsen]

Here is the exception output:

python rigol.py

Unknown error -99 None Traceback (most recent call last): File "rigol.py", line 17, in instr = usbtmc.Instrument(0x1ab1, 0x0588) # Rigol DS1102D File "/_ext.tmp/python-usbtmc.git/usbtmc/usbtmc.py", line 248, in init self.reset() File "/_ext.tmp/python-usbtmc.git/usbtmc/usbtmc.py", line 257, in reset self.device.reset() File "/_ext.tmp/python-usbtmc.git/usb/core.py", line 595, in reset self._ctx.backend.reset_device(self._ctx.handle) File "/_ext.tmp/python-usbtmc.git/usb/backend/libusb1.py", line 846, in reset_device _check(self.lib.libusb_reset_device(dev_handle.handle)) File "/_ext.tmp/python-usbtmc.git/usb/backend/libusb1.py", line 572, in _check raise USBError(_str_error[ret], ret, _libusb_errno[ret]) usb.core.USBError: [Errno None] Unknown error #

[alexforencich]

This particular reset call has now been completely removed, so this should no longer be an issue.