Jose Pablo wrote:
I think Vincent is right. I am pretty sure you guys have a lot of good
ideas for the library but if you keep that attitude you will not get
it serious. It seen you guys are taking the project by force
I think that's the intent, yes.
--
Tim Roberts, t...@probo.com
?
If you were able to install it that way, yes. You might also need to
dink with the UpperFilters and LowerFilters values in the registry, too.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc.
--
Live Security
,\
43,00,38,00,42,00,33,00,7d,00,00,00,00,00
34c38
ActiveService=USBSTOR
---
ActiveService=WinUSB
You'd need to add the DeviceInterfaceGUIDs key so WinUSB knows which
device interface to register.
Perhaps this is a bit too much magic just to save a little bit of effort.
--
Tim Roberts, t
?
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc.
--
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concept mean in a VM environment?
You're depending on interfaces that are system-specific but not promised
by contract. Are you sure the mechanisms you need will still be there
in three years?
However, you're fully entitled to set policy, so I won't say any more on
the topic.
--
Tim Roberts, t
, right? / is what you
get when a device fails to enumerate at the hardware level.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc.
--
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, the USB
team at Microsoft sent out a blast saying We will add this if you have
a legitimate use case for it. Let us know. No one has let them know,
or at least no one that matters.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc
.
Also, if you want 42 bytes, you should ask for 42 bytes, not 10. In
general, you should ALWAYS ask for a multiple of the endpoint's packet size.
That's a HID endpoint. Are you certain there will be HID traffic
waiting for you, and that you don't need to send a report request first?
--
Tim
0x4000.
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Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc.
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to have 512kB, so it
shouldn't be an issue.
--
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Providenza Boekelheide, Inc.
--
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and
threat landscape
. Their GUI is a
little more video-game-like than I prefer, but it does the job.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc.
--
Live Security Virtual Conference
Exclusive live event will cover all the ways
to write a filter driver for usbport.sys on the existing
operating systems to provide this same functionality. Did anyone ever
undertake that project?
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc.
--
Live
as
Windows 8 in terms of detecting and automatically installing drivers?
You're right. I hadn't thought that through sufficiently.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc.
--
Live Security Virtual
the
endpoint6? If this is correct what is the other POLLIN file descriptor?
If timerfd is available on your system, to manage timer expirations
through a file descriptor, that's added to the POLLIN list.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc
?
Why would you need to?
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc.
--
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and
threat landscape has changed
is well on
his way to having a solution for you.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc.
--
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and
threat
,// size
reinterpret_castUCHAR*(pszAssNum));// buffer
bmRequestType = 0xC2
bRequest = VR_I2C_COMMAND
wValue = c_usDeviceId
wIndex = c_usOffset
length = c_uiLength
You should be able to figure the parameters out from that.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc
Vendor other, incoming
All other values of bmRequestType are invalid.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc.
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.
libusb_clear_halt(devh, 0x06);
libusb_clear_halt(devh, 0x88);
Why do you call clear_halt here? In virtually every case, that's
unnecessary superstition.
Are you sure your device has queued up data to send? What is it that
tells your device to put data in the FX2 FIFO?
--
Tim Roberts, t
the exact
interface to the Garmin DLL.
--
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Providenza Boekelheide, Inc.
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formats produced by their devices.
Their driver is not very complicated -- it mostly just passes requests
straight through to the device. YOU ought to be able to figure out from
that document what the data is you are receiving from USB.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc
. We don't know more about
that than you do.
--
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Providenza Boekelheide, Inc.
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threat
the amd64 name
embedded throughout.
I assume this irritates Intel every time they see it, and so they keep
having guys in nice suits whisper in the ears of Microsoft management
that it would really be more fair and accurate if you dropped the amd64
name. That's gradually happening over time.
--
Tim
and actually
managed to set the course for mainstream 64 bit adoption.
Karma's a bitch ain't it? ;)
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc.
--
Live Security Virtual Conference
Exclusive live event
, but it is not allowed to put anything on the wire until
it gets an IN token from the host, and that will only happen if the host
controller driver has a pending request from you. If you don't ask for
it, the device is never given the opportunity to send.
--
Tim Roberts, t...@probo.com
Providenza
packet size of 512. That's required by the spec. Because
the FX2 only has a 64-byte buffer for endpoint 1, that presents a
philosophical problem, and the FX2 data sheet points this out. You have
to report it as 512 bytes, but make sure you never try to do a packet
larger than 64.
--
Tim Roberts
you see? Is there an error, or does it simply never return?
How many bytes are you trying to read? What is the value of endpoint?
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc.
--
Live Security Virtual
= libusb_claim_interface(dev_handle, interface_number);//Returns -12
for interfaces 0 and 1,
Interfaces 0 and 1 are CDC (communication class). It's possible those
interfaces are already being claimed by a virtual COM port driver.
How did you install the libbusb driver?
--
Tim Roberts, t
running single thread, I am
serialize the call) it takes 4-5 calls for
libusb_handle_events_timeout to call the callback and exit the loop.
this is the case even when 0 byte is read.
Well, when 0 bytes are read, it should time out. Right?
--
Tim Roberts, t...@probo.com
Providenza
, but
there's not much we can do without seeing the whole code, and I'm not
sure you really want to do that. You need to think about what order
things are happening, remembering that asynchronous operations will
always arrive at the most inconvenient time.
--
Tim Roberts, t...@probo.com
Providenza
expected.
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Providenza Boekelheide, Inc.
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, basically, you aren't measuring what you think you are measuring.
For example, it looks like you might have a fixed delay of 2.5 seconds
somewhere between your start and your stop. You can't measure
throughput if you are blocking in your timing code.
--
Tim Roberts, t...@probo.com
Providenza
requests on the bus do not include an interface number.
Claiming an interface just grants you ownership of the endpoints within
that interface.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc.
--
Everyone hates
silently and does not require the normal PnP
installation process, although the device has to be restarted or
unplugged/replugged.
I don't believe any of the libusbx back-ends operate as a filter
driver. However, I thought that the libusb-win32 COULD act as a
filter. Am I wrong?
--
Tim Roberts, t
commands the disk firmware expects, and there's no good way to find
out.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc.
--
The Windows 8 Center - In partnership with Sourceforge
Your idea - your app - 30 days
it is worth looking at how to get it work there.
WinUSB apparently works under Windows RT.
The only way to use USB is through the WinRT runtime. That runtime uses
WinUSB. At this point, there is no other way to do it.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc
USBSTORE.
--
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Providenza Boekelheide, Inc.
--
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web console. Get in-depth insight into apps, servers, databases, vmware,
SAP
an interface
number at all), then you only need one driver. But if you don't
register for the composite device, the system supplies one (usbccgp),
which creates N separate subdevices, each of which starts crying for its
own driver.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc
library is interrupt-driven, and
with an 80 MHz core, it ought to be able to keep up, unless you are
intercepting the GetDescriptor request in some way.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc.
--
Keep
tightly coupled to Windows.
This page might help you: http://www.linux-usb.org/usbtest/
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc.
--
Keep yourself connected to Go Parallel:
INSIGHTS What's next
you could do the
same thing yourself with a small C module.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc.
--
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, at the next
millisecond boundary.
--
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Providenza Boekelheide, Inc.
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...
This is a nice summary of the situation. I'm especially fond of your
phrase going all Apple -- I will have to work that into a New Year's
Eve party conversation.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc
a protocol violation. I guess that
implicates the firmware. Have you done an lsusb to make sure the
descriptors match what you expect?
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc.
--
Master HTML5, CSS3
on Linux, or presumably on other
platforms. I don't see any reason why libusb or libusbx should support
it.
I agree.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc.
--
Master Visual Studio, SharePoint, SQL
Xiaofan Chen wrote:
On Fri, Jan 25, 2013 at 2:40 AM, Tim Roberts t...@probo.com wrote:
In Microsoft's defense, this is implemented in the WinUSB wrapper DLL,
not at the USB kernel level. It's a convenience. The DLL turns this
into spec-compliant requests at the kernel level
to use the same code base (or close to it)
across platforms was also an enticing factor. Let me know if you think
I am off base with this.
How are you going to avoid specifying a COM port across platforms?
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc
to accomplish what
I want using bulk transfers via Libusbx. Are there major issues with
this that I'm not aware of?
I'm with Alan. If it works for you, bulk traffic is the most common kind.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc
with alternate setting 1.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc.
--
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to set the
alternate setting number if you have more than one, and you will
(almost) never have more than one unless you have isochronous pipes.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc.
--
The Go
setting function sends the EXACT SAME REQUEST. There's
just one field that identifies the alternate setting to enable.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc.
--
Everyone hates slow websites. So do we
is unpredictable.
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Providenza Boekelheide, Inc.
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a CAT file
for all driver packages. Look up the inf2cat tool.
--
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Providenza Boekelheide, Inc.
--
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Xiaofan Chen wrote:
On Thu, Feb 28, 2013 at 2:32 AM, Tim Roberts t...@probo.com wrote:
Note that Windows 8 now requires a CAT file
for all driver packages.
Does this cat file needs to be signed? Where is
this documented?
I couldn't find it written down. I learned it empirically.
I find
in that code that serializes read requests.
If not, then what could be the problem?
That FTDI code does set the default read buffer size to 4096. That's
settable, using ftdi_read_data_set_chunksize.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc
should be able to do exactly 64kB/s.
I have a question: is ISO transfer works with libusbx or not?
Yes.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc.
--
Symantec Endpoint Protection 12 positioned
an application-specific process.
This is why hotplug has not already been added to libusb/libusbx. You
have suggested a mechanism that would work for your application, but
it's not at all clear that it is the right solution for every
application. It's a very tricky problem.
--
Tim Roberts, t
and connector tolerances are a
LOT less forgiving at 5 GHz than they are at 480 MHz.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc.
--
Everyone hates slow websites. So do we.
Make your web apps faster
Form. Why not just advance the pointer in place?
ed = (struct libusb_endpoint_descriptor *)((unsigned char *)ed +
LIBUSB_DT_ENDPOINT_SIZE);
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc.
--
Everyone
files, create services, and
create registry entries, but it will not associate your driver with the
device you're trying to drive.
Right-click installs can be used for so-called legacy drivers, but it
doesn't do anything that can't also be done with a batch script or a
trivial C program.
--
Tim
an interface number in them. All they get are
an endpoint number.
--
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Pete Batard wrote:
On 2013.04.08 19:12, Tim Roberts wrote:
For example, in this snippet:
Opening device 0403:CFF8...
libusbx: error [init_device] device
'\\.\USB#VID_0403PID_CFF8MI_01#6222886B8
1' is no longer connected!
the MI_01 implies that you have a separate driver for each
on
was absolutely insignificant when compared to the overhead of
user/kernel transitions and user event processing.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc.
--
Precog is a next-generation analytics
of the problem that, even if you completely eliminated all of
the libusbx overhead, you would have improved the overall performance so
slightly that it makes no difference.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc
is below.
What does the configuration descriptor look like?
--
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Providenza Boekelheide, Inc.
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lookup should go do the lookup. Beyond that,
this becomes a maintenance headache.
However, I may not be in the majority. I also think the project will
come to regret the introduction of libusb_strerror.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc
how this could happen.
If you don't SEND the second buffer until you have RECEIVED the first
result, how could you even get the first result unless the first buffer
was already gone?
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc
can't judge that. I am, admittedly, a minimalist.
--
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Providenza Boekelheide, Inc.
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this instead:
fputs(str, stderr);
--
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with it because of forgiving USB 2 implementations, but USB 3 is
stricter.
--
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Providenza Boekelheide, Inc.
--
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are starting from scratch, then
it might be worth considering an upgrade.
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Providenza Boekelheide, Inc.
--
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It's a free
a PDO for MI_00. You'll only get one
driver, and that driver is assigned ownership of all three interfaces.
There will never be an opportunity to load MI_01 and MI_02, because it
won't create those PDOs.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc
, the PDO will be
created for MI_03, but the rewritten configuration descriptor only
includes interfaces 3, 4 and 5. You don't need the IAD, because you can
enumerate the interfaces you got.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc
usbccgp.sys or any other driver associated with the composite
parent.
Hmm. That would, in fact, bypass the composite parent rewriting.
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transfers would be exactly identical to the same device with 9
interfaces.
The interfaces are only there to allow the operating system drivers to
manage ownership. The bus doesn't care.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc
something here
Google is your friend.
That's the ID of the internal USB hub in Dell's port replicator.
--
Tim Roberts, t...@probo.commailto:t...@probo.com
Providenza Boekelheide, Inc.
--
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using Java code to call android.hardware.usb.UsbManager to request the
permission you need.
--
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Providenza Boekelheide, Inc.
--
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to return exactly
what it got. I do agree that the convenience wrapper
(libusb_get_string_descriptor_ascii) can have a more sophisticated
policy, but I don't think you should be lying in the lower-level interface.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc
, unless the user has requested interpretation (that is, the _ascii
version). In that case, we can be free to reject bad data.
--
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Providenza Boekelheide, Inc.
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.
I'm confused by this. If you are using the HID backend, which it seems
you are, you should never see ERROR_OPERATION_ABORTED. The HID backend
uses CancelIo in case of a timeout, not AbortPipe. Are you specifying a
timeout?
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc
in
hid_copy_transfer_data.
Is libusbx still being maintained, or is all the energy focused on the
great rejoining?
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc.
--
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Liang Zhu wrote:
I would like to know how to ensure my usb device to be programmed
comes up in DFU mode.
That's entirely up to your device. It is your device that decides
whether to expose its regular working interface, or its DFU interface.
--
Tim Roberts, t...@probo.com
Providenza
back up with its normal (e.g., HID) interface. Two
entirely separate personalities.
Sometimes, both interfaces are exposed all of the time. In that case,
you will still drop off the bus after firmware loading and re-enumerate.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc
Kerdo Link wrote:
Shouldn't 3 be 0x03? because of uint16_t?
You don't honestly think there is any difference between 3 and 0x03, do you?
--
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Providenza Boekelheide, Inc.
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are you trying to send here?
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in WinUSB that libusbx does not properly
handle. When you send a control request, libusbx finds the first valid
interface handle in its list and uses that. That does not work for
INTERFACE requests. It would have to search for the MATCHING interface
handle.
--
Tim Roberts, t...@probo.com
Providenza
ccier wrote:
And libusbx handles this situation differently if libusbK is used?
libusbx does not handle the situation at all. That's the issue. This
is a WinUSB feature that libusbK does not have and libusbx did not
anticipate.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc
not contain any isochronous endpoints at all. Having an endpoint
with a max packet size of 0 is silly.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc.
--
Rapidly troubleshoot problems before they affect your business
request to an endpoint. If the
second parameter is Request, then you are sending to endpoint 3. To do
that, Windows requires that you actually own the interface that
contains endpoint 3. Have you already done that? It looks like you
claimed interface 1. Does that hold endpoint 3?
--
Tim Roberts
bRequest for your own purposes, then you should use a
vendor request to the device, which is 0x40 instead of 0x42.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc.
--
Rapidly troubleshoot problems before
and halted the pipe, and that the actual
data you used here is irrelevant. Do you have any visibility into the
device to see its status at this point?
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc.
--
Rapidly
there is a
pending request. A USB device cannot send data on its own, and it
cannot signal that it is ready to receive. Everything starts with the
host application/driver. What the poll lets you do is learn when a
previously-submitted asynchronous request has completed.
--
Tim Roberts, t...@probo.com
there must be at least two elements.
Thus, your change is safe, although superfluous.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc.
--
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Nathan Hjelm wrote:
Ah. Ok. Wasn't aware of that case. The code is question is ISO C89 to
support MSVC. Do you know if the C89 standard also guarantees the rest
of the struct is zeroed?
Yes. That C99 wording was copied from the C89 spec, section 3.5.7.
--
Tim Roberts, t...@probo.com
Tim Roberts wrote:
Nathan Hjelm wrote:
Ah. Ok. Wasn't aware of that case. The code is question is ISO C89 to
support MSVC. Do you know if the C89 standard also guarantees the rest
of the struct is zeroed?
Yes. That C99 wording was copied from the C89 spec, section 3.5.7.
HAVING SAID ALL
to mention it here, but it's not really all that
hard to code directly to the usbfs ioctls, and that way you have
complete control over your destiny.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc.
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behind the handle.
--
Tim Roberts, t...@probo.com
Providenza Boekelheide, Inc.
--
___
libusbx-devel mailing list
libusbx-devel@lists.sourceforge.net
https://lists.sourceforge.net
difficult to imagine how anything below
your application could cause this.
--
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Providenza Boekelheide, Inc.
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