On Wed, May 2, 2018 at 10:50 PM, Luigi Gubello <luigi.gube...@gmail.com> wrote: > Hi, > > Nike has decided to close support for some products. So I have decided to > try to extract data from my Nike+ Sportband USB, by using Python and PyUSB. > I always get this error: > > 'usb.core.USBError: [Errno 110] Operation timed out' > > I have written a post on Stack Overflow, where there is my python code: > > https://stackoverflow.com/questions/50117520/extract-data-from-nike-sportband-with-pyusb-on-debian > > I found a C code that works, but I can not do the same with Python. You can > read the C code here: > > http://knz-blue.cocolog-nifty.com/memo/files/SportBandGetTrack.c > > I have read this topic: > > http://pyusb-users.narkive.com/sUHXq7uY/usb-core-usberror-errno-110-operation-timed-out > > It seems to be the same problem. Can you help me? > Thank you!
As mentioned in the StackOverflow answer, your pyusb code is different from the C code. You need to send a Control OUT (write) transfer first and then carry out Control IN (read) transfer first. For the endpoint, Control IN is 0x80. Control OUT is 0x0. You can read basic of USB here. http://www.usbmadesimple.co.uk/ -- Xiaofan ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ pyusb-users mailing list pyusb-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pyusb-users
