[pyusb-users] libusb1 Callback thread
Hello... I try to do some async transfer. The program bellow actualy 'near' work. It setup 10 transfers and should print the received bytes in callback. The problem is that callback is not done at receive complete! In example below I expect callback while sleep comand is executed but instead got all callbacks when I close device... I know that USBPoller/USBPollerThread has something to do with my problem but don't know how to use it. Here is my test program: #*** import usb1,time def openUsb(vid,pid,name): context = usb1.USBContext() for dev in context.getDeviceList(skip_on_error=True): if (dev.getVendorID()==vid) (dev.getProductID()==pid): if dev.getProduct()==name: return dev.open() USBdev=openUsb(0x16d0,0x06ad,'Q_ANALISER') if not USBdev: print Device not found exit(0) def callback(transfer): print Just received %4.0f Bytes % transfer.getActualLength() transfer=[] for i in range(10): transfer.append(USBdev.getTransfer()) transfer[-1].setControl(160, 3, 0, 0, 4096, callback, None, 1000) transfer[-1].submit() time.sleep(1) print sleep 1 done. time.sleep(1) print sleep 2 done. USBdev.close() print Device closed. #*** And this is output. (received length is as expected 1'st frame is 1 as this indicated overrun in my device and other's are actual packets) sleep 1 done. sleep 2 done. Just received1 Bytes Just received 2870 Bytes Just received 2870 Bytes Just received 2870 Bytes Just received 2870 Bytes Just received 2870 Bytes Just received 2870 Bytes Just received 2870 Bytes Just received 2870 Bytes Just received 2870 Bytes Device closed. -- (program exited with code: 0) Press return to continue -- Infragistics Professional Build stunning WinForms apps today! Reboot your WinForms applications with our WinForms controls. Build a bridge from your legacy apps to the future. http://pubads.g.doubleclick.net/gampad/clk?id=153845071iu=/4140/ostg.clktrk ___ pyusb-users mailing list pyusb-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pyusb-users
Re: [pyusb-users] libusb1 Callback thread
On 30. 07. 2014 11:52, Xiaofan Chen wrote: On Wed, Jul 30, 2014 at 2:45 PM, Slavko Kocjancic esla...@gmail.com wrote: Hello... I try to do some async transfer. The program bellow actualy 'near' work. It setup 10 transfers and should print the received bytes in callback. The problem is that callback is not done at receive complete! In example below I expect callback while sleep comand is executed but instead got all callbacks when I close device... I know that USBPoller/USBPollerThread has something to do with my problem but don't know how to use it. Here is my test program: #*** import usb1,time def openUsb(vid,pid,name): context = usb1.USBContext() for dev in context.getDeviceList(skip_on_error=True): if (dev.getVendorID()==vid) (dev.getProductID()==pid): if dev.getProduct()==name: return dev.open() It seems to me that you are not using pyusb, but rather python-libusb1. https://github.com/vpelletier/python-libusb1/blob/master/testUSB1.py I am not so sure if people in this list are working with python-libusb1 or not. Yes it is python-libusb1 as libusb doesn't handle async transfer at all. -- Infragistics Professional Build stunning WinForms apps today! Reboot your WinForms applications with our WinForms controls. Build a bridge from your legacy apps to the future. http://pubads.g.doubleclick.net/gampad/clk?id=153845071iu=/4140/ostg.clktrk ___ pyusb-users mailing list pyusb-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pyusb-users
Re: [pyusb-users] Asynchronous transfers
On 29. 07. 2014 18:51, Wander Lairson Costa wrote: Unfortunately, PyUSB doesn't have async support yet :( Ouch... So what can be done? Direct acess to lubusb? Is it possible to make callback in python?!? Or another library in c is way to go?!? any hint? For PyUSB there is nothing to be done on short term, but you can try [1]. It is a thin Python wrapper around libusb 1.0. [1] https://github.com/vpelletier/python-libusb1 Best Regards, Wander Lairson Costa Ok I managed somehow to work in linux but now I stuck as I can't manage ro run in windows. I know that I use python-libusb1 https://github.com/vpelletier/python-libusb1 and this should work with libusb1.0 (but not libusb-win32). But I don't know how to test if this is libusb or libusb-win as both dll have same name? And seems that I use wrong dll (btw it's near impossible to find precompiled libusb-1.0.dll to be not libusb-win32 type??) Does someone have links to working solution? (ie python wrapper to libusb and correct libusb, to be able to work in linux and win with async support?) Thanks. -- Infragistics Professional Build stunning WinForms apps today! Reboot your WinForms applications with our WinForms controls. Build a bridge from your legacy apps to the future. http://pubads.g.doubleclick.net/gampad/clk?id=153845071iu=/4140/ostg.clktrk ___ pyusb-users mailing list pyusb-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pyusb-users
[pyusb-users] Asynchronous transfers
Hello... How to make Asynchronous transfers with pyusb? I look for some example but no luck... I stuck on the beggining.. Ie I need to allocate some buffer but fail... I try like this: import usb transfer=lib.libusb_alloc_transfer(0) lib.libusb_free_transfer(transfer) How to do that?!? Thanks, Slavko. -- Infragistics Professional Build stunning WinForms apps today! Reboot your WinForms applications with our WinForms controls. Build a bridge from your legacy apps to the future. http://pubads.g.doubleclick.net/gampad/clk?id=153845071iu=/4140/ostg.clktrk ___ pyusb-users mailing list pyusb-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pyusb-users
Re: [pyusb-users] Asynchronous transfers
On 29. 07. 2014 18:20, Wander Lairson Costa wrote: 2014-07-29 11:28 GMT-03:00 Slavko Kocjancic esla...@gmail.com: Hello... How to make Asynchronous transfers with pyusb? I look for some example but no luck... I stuck on the beggining.. Ie I need to allocate some buffer but fail... I try like this: import usb transfer=lib.libusb_alloc_transfer(0) lib.libusb_free_transfer(transfer) How to do that?!? Unfortunately, PyUSB doesn't have async support yet :( Ouch... So what can be done? Direct acess to lubusb? Is it possible to make callback in python?!? Or another library in c is way to go?!? any hint? -- Infragistics Professional Build stunning WinForms apps today! Reboot your WinForms applications with our WinForms controls. Build a bridge from your legacy apps to the future. http://pubads.g.doubleclick.net/gampad/clk?id=153845071iu=/4140/ostg.clktrk ___ pyusb-users mailing list pyusb-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pyusb-users
Re: [pyusb-users] Select device by name linux / win difference
On 17. 07. 2014 01:01, Wander Lairson Costa wrote: 2014-07-16 15:05 GMT-03:00 Slavko Kocjancic esla...@gmail.com: I download from here http://sourceforge.net/projects/pyusb/files/PyUSB%201.0/1.0.0-alpha-3/ Could you please download from this link [1] and check if it works? [1] https://github.com/walac/pyusb/tarball/master Hello... With that library I got text output on linux too! Seems that I have multiple install in both systems. I do cleanup of anny pyusb and install previous driver. Now work in both system. Thanks for guide me. Slavko. -- Want fast and easy access to all the code in your enterprise? Index and search up to 200,000 lines of code with a free copy of Black Duck Code Sight - the same software that powers the world's largest code search on Ohloh, the Black Duck Open Hub! Try it now. http://p.sf.net/sfu/bds ___ pyusb-users mailing list pyusb-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pyusb-users
[pyusb-users] Select device by name linux / win difference
Hello... Attached is simple example. The problem is that it's works in linux but not in windows. And I wan't to be portable. Can someone tell me what I do wrong? seems that class 'usb.core.Device' is handeled different in win (it return long string?!) #there is current only one device with correct vid/pid attached import usb def openUsb(vid,pid,name=''): try: devices = usb.core.find(idVendor=vid, idProduct=pid, find_all=True) for dev in devices: print type (dev) print dev if (usb.util.get_string(dev,256,2)==name): dev.set_configuration() return dev except Exception as e: print e USBdev=openUsb(0x16d0,0x06ad,'Q_ANALISER') if not USBdev: print Device not found exit(0) print Device found ,USBdev ''' OUTPUT on LINUX# class 'usb.core.Device' usb.core.Device object at 0x7ff2647f7290 Device found usb.core.Device object at 0x7ff2647f7290 OUTPUT on WINDOWS# class 'usb.core.Device' DEVICE ID 16d0:06ad on Bus 000 Address 001 = bLength: 0x12 (18 bytes) bDescriptorType:0x1 Device bcdUSB : 0x110 USB 1.1 bDeviceClass :0x0 Specified at interface bDeviceSubClass:0x0 bDeviceProtocol:0x0 bMaxPacketSize0:0x8 (8 bytes) idVendor : 0x16d0 idProduct : 0x06ad bcdDevice :0x1 Device 0.01 iManufacturer :0x1 CAA iProduct :0x2 Q_ANALISER iSerialNumber :0x0 bNumConfigurations :0x1 CONFIGURATION 1: 400 mA == bLength :0x9 (9 bytes) bDescriptorType :0x2 Configuration wTotalLength : 0x1b (27 bytes) bNumInterfaces :0x1 bConfigurationValue :0x1 iConfiguration :0x0 bmAttributes : 0xc0 Self Powered bMaxPower: 0xc8 (400 mA) INTERFACE 0: Human Interface Device bLength:0x9 (9 bytes) bDescriptorType:0x4 Interface bInterfaceNumber :0x0 bAlternateSetting :0x0 bNumEndpoints :0x0 bInterfaceClass:0x3 Human Interface Device bInterfaceSubClass :0x0 bInterfaceProtocol :0x0 iInterface :0x0 Device not found Press any key to continue . . . ''' -- Want fast and easy access to all the code in your enterprise? Index and search up to 200,000 lines of code with a free copy of Black Duck Code Sight - the same software that powers the world's largest code search on Ohloh, the Black Duck Open Hub! Try it now. http://p.sf.net/sfu/bds ___ pyusb-users mailing list pyusb-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pyusb-users
Re: [pyusb-users] Select device by name linux / win difference
On 16. 07. 2014 12:33, Wander Lairson Costa wrote: 2014-07-16 6:05 GMT-03:00 Slavko Kocjancic esla...@gmail.com: Hello... Attached is simple example. The problem is that it's works in linux but not in windows. And I wan't to be portable. Can someone tell me what I do wrong? seems that class 'usb.core.Device' is handeled different in win (it return long string?!) #there is current only one device with correct vid/pid attached import usb def openUsb(vid,pid,name=''): try: devices = usb.core.find(idVendor=vid, idProduct=pid, find_all=True) for dev in devices: print type (dev) print dev if (usb.util.get_string(dev,256,2)==name): dev.set_configuration() return dev except Exception as e: print e USBdev=openUsb(0x16d0,0x06ad,'Q_ANALISER') if not USBdev: print Device not found exit(0) print Device found ,USBdev ''' OUTPUT on LINUX# class 'usb.core.Device' usb.core.Device object at 0x7ff2647f7290 Device found usb.core.Device object at 0x7ff2647f7290 OUTPUT on WINDOWS# class 'usb.core.Device' DEVICE ID 16d0:06ad on Bus 000 Address 001 = bLength: 0x12 (18 bytes) bDescriptorType:0x1 Device bcdUSB : 0x110 USB 1.1 bDeviceClass :0x0 Specified at interface bDeviceSubClass:0x0 bDeviceProtocol:0x0 bMaxPacketSize0:0x8 (8 bytes) idVendor : 0x16d0 idProduct : 0x06ad bcdDevice :0x1 Device 0.01 iManufacturer :0x1 CAA iProduct :0x2 Q_ANALISER iSerialNumber :0x0 bNumConfigurations :0x1 CONFIGURATION 1: 400 mA == bLength :0x9 (9 bytes) bDescriptorType :0x2 Configuration wTotalLength : 0x1b (27 bytes) bNumInterfaces :0x1 bConfigurationValue :0x1 iConfiguration :0x0 bmAttributes : 0xc0 Self Powered bMaxPower: 0xc8 (400 mA) INTERFACE 0: Human Interface Device bLength:0x9 (9 bytes) bDescriptorType:0x4 Interface bInterfaceNumber :0x0 bAlternateSetting :0x0 bNumEndpoints :0x0 bInterfaceClass:0x3 Human Interface Device bInterfaceSubClass :0x0 bInterfaceProtocol :0x0 iInterface :0x0 Device not found Press any key to continue . . . Hi, It feels like you are using different git revisions for Windows and Linux, aren't you? It's should be same. But don't know how to check wich backend pyusb use at linux and win... In win there should be only one, but in linux I have at least 3 and need all... (for other things) Slavko. -- Want fast and easy access to all the code in your enterprise? Index and search up to 200,000 lines of code with a free copy of Black Duck Code Sight - the same software that powers the world's largest code search on Ohloh, the Black Duck Open Hub! Try it now. http://p.sf.net/sfu/bds ___ pyusb-users mailing list pyusb-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pyusb-users
Re: [pyusb-users] Select device by name linux / win difference
On 16. 07. 2014 12:52, Wander Lairson Costa wrote: 2014-07-16 7:39 GMT-03:00 Slavko Kocjancic esla...@gmail.com: On 16. 07. 2014 12:33, Wander Lairson Costa wrote: 2014-07-16 6:05 GMT-03:00 Slavko Kocjancic esla...@gmail.com: Hello... Attached is simple example. The problem is that it's works in linux but not in windows. And I wan't to be portable. Can someone tell me what I do wrong? seems that class 'usb.core.Device' is handeled different in win (it return long string?!) #there is current only one device with correct vid/pid attached import usb def openUsb(vid,pid,name=''): try: devices = usb.core.find(idVendor=vid, idProduct=pid, find_all=True) for dev in devices: print type (dev) print dev if (usb.util.get_string(dev,256,2)==name): dev.set_configuration() return dev except Exception as e: print e USBdev=openUsb(0x16d0,0x06ad,'Q_ANALISER') if not USBdev: print Device not found exit(0) print Device found ,USBdev ''' OUTPUT on LINUX# class 'usb.core.Device' usb.core.Device object at 0x7ff2647f7290 Device found usb.core.Device object at 0x7ff2647f7290 OUTPUT on WINDOWS# class 'usb.core.Device' DEVICE ID 16d0:06ad on Bus 000 Address 001 = bLength: 0x12 (18 bytes) bDescriptorType:0x1 Device bcdUSB : 0x110 USB 1.1 bDeviceClass :0x0 Specified at interface bDeviceSubClass:0x0 bDeviceProtocol:0x0 bMaxPacketSize0:0x8 (8 bytes) idVendor : 0x16d0 idProduct : 0x06ad bcdDevice :0x1 Device 0.01 iManufacturer :0x1 CAA iProduct :0x2 Q_ANALISER iSerialNumber :0x0 bNumConfigurations :0x1 CONFIGURATION 1: 400 mA == bLength :0x9 (9 bytes) bDescriptorType :0x2 Configuration wTotalLength : 0x1b (27 bytes) bNumInterfaces :0x1 bConfigurationValue :0x1 iConfiguration :0x0 bmAttributes : 0xc0 Self Powered bMaxPower: 0xc8 (400 mA) INTERFACE 0: Human Interface Device bLength:0x9 (9 bytes) bDescriptorType:0x4 Interface bInterfaceNumber :0x0 bAlternateSetting :0x0 bNumEndpoints :0x0 bInterfaceClass:0x3 Human Interface Device bInterfaceSubClass :0x0 bInterfaceProtocol :0x0 iInterface :0x0 Device not found Press any key to continue . . . Hi, It feels like you are using different git revisions for Windows and Linux, aren't you? It's should be same. But don't know how to check wich backend pyusb use at linux and win... In win there should be only one, but in linux I have at least 3 and need all... (for other things) I said that because you have different results when you do print dev on Linux and Windows. You can do a git pull origin master on both repositories to make sure you are using git HEAD. That different result confuse me too. And I do install same pyusb-1.0.0.b1 in both systems. The only difference can be the libusb driver itself. for win probably libusb-win and for linux probably libusb1.0 but don't know wich one the pyusb pick. -- Want fast and easy access to all the code in your enterprise? Index and search up to 200,000 lines of code with a free copy of Black Duck Code Sight - the same software that powers the world's largest code search on Ohloh, the Black Duck Open Hub! Try it now. http://p.sf.net/sfu/bds ___ pyusb-users mailing list pyusb-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pyusb-users
Re: [pyusb-users] Select device by name linux / win difference
...but I newer installed GIT version on Win system. So where it came? -- Want fast and easy access to all the code in your enterprise? Index and search up to 200,000 lines of code with a free copy of Black Duck Code Sight - the same software that powers the world's largest code search on Ohloh, the Black Duck Open Hub! Try it now. http://p.sf.net/sfu/bds___ pyusb-users mailing list pyusb-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pyusb-users
Re: [pyusb-users] Select device by name linux / win difference
I download from here http://sourceforge.net/projects/pyusb/files/PyUSB%201.0/1.0.0-alpha-3/ 2014-07-16 16:08 GMT+01:00 Wander Lairson Costa wander.lair...@gmail.com: 2014-07-16 11:47 GMT-03:00 Slavko Kocjancic esla...@gmail.com: ...but I newer installed GIT version on Win system. So where it came? I guess you downloaded the zip from walac.github.io/pyusb, which is just a packaged git HEAD. This website is temporary because SF finished trac support. Best Regards, Wander Lairson Costa -- Want fast and easy access to all the code in your enterprise? Index and search up to 200,000 lines of code with a free copy of Black Duck Code Sight - the same software that powers the world's largest code search on Ohloh, the Black Duck Open Hub! Try it now. http://p.sf.net/sfu/bds ___ pyusb-users mailing list pyusb-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pyusb-users -- Want fast and easy access to all the code in your enterprise? Index and search up to 200,000 lines of code with a free copy of Black Duck Code Sight - the same software that powers the world's largest code search on Ohloh, the Black Duck Open Hub! Try it now. http://p.sf.net/sfu/bds___ pyusb-users mailing list pyusb-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pyusb-users
Re: [pyusb-users] ctrl_transfer failed...
On 05/21/2014 05:27 PM, Wander Lairson Costa wrote:
2014-05-21 3:00 GMT-03:00 Slavko Kocjancic esla...@gmail.com:
On 05/21/2014 03:36 AM, Wander Lairson Costa wrote:
2014-05-20 13:26 GMT-03:00 Slavko Kocjancic esla...@gmail.com:
Hello...
I'm new to python (and pyusb).
I try to port some VUSB device to work with python, but get at trouble
in beggining. I can't send bytes...
here is my example (stripped from manual...)
import usb.core
import usb.util
from array import *
dev = usb.core.find(idVendor=0x16c0, idProduct=0x05df)
if dev is None:
raise ValueError('Device not found')
dev.set_configuration()
msg = 'test'
print dev.ctrl_transfer(32+128, 9, 0, 0, msg)
I guess the first argument should be just 32.
Well I want write. And bit 7 of first argument tells if this is write or
read.
and msg (at least by manual) behave as buffer for tx, and integer for
size in receive mode.
Yes, with this bit set, the request is an IN transfer, and the `msg`
parameter is (wrongly) interpreted as the length of the transfer.
I realized that when I wan't to read from device. I'm interpreted this
bit just opposite. But have other problem with win driver and take a lot
of time to discover what are wrong. At least it works now.
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[pyusb-users] ctrl_transfer failed...
Hello...
I'm new to python (and pyusb).
I try to port some VUSB device to work with python, but get at trouble
in beggining. I can't send bytes...
here is my example (stripped from manual...)
import usb.core
import usb.util
from array import *
dev = usb.core.find(idVendor=0x16c0, idProduct=0x05df)
if dev is None:
raise ValueError('Device not found')
dev.set_configuration()
msg = 'test'
print dev.ctrl_transfer(32+128, 9, 0, 0, msg)
and there is error report
Traceback (most recent call last):
File pyusbtest.py, line 13, in module
print dev.ctrl_transfer(32+128, 9, 0, 0, msg)
File /usr/local/lib/python2.7/dist-packages/usb/core.py, line 711,
in ctrl_transfer
self.__get_timeout(timeout)
File /usr/local/lib/python2.7/dist-packages/usb/backend/libusb1.py,
line 823, in ctrl_transfer
buff = _interop.as_array((0,) * data_or_wLength)
TypeError: can't multiply sequence by non-int of type 'str'
how to proceed? (python2.7 on ubuntu)
slavko.
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