pyusb

I need to send data via USB using Python, I'm using PyUSB (http://sourceforge.net/apps/trac/pyusb/) I look for any USB port available, and I tried to send a message: devList = usb.core.find(find_all=True) for dev in devList: for cfg in dev: for intf in cfg: sys.stdout.write('\t' + str(intf.bInterfaceNumber) + ',' + str(intf.bAlternateSetting) + '\n') for ep in intf: sys.stdout.write('\t\t' + str(ep.bEndpointAddress) + '\n') if ep.bEndpointAddress: try: dev.write(ep.bEndpointAddress, 'test', intf.bInterfaceNumber) except Exception: print "\t\terror : dev.write("+str(ep.bEndpointAddress)+",

I have so far gotten to the stage of finding the device, now I am ready to talk to the USB using the devices protocol laid out in the specification on page 22. libusb is installed on my machine and so is PyUSB. import usb.core import usb.util # find our device dev = usb.core.find(idVendor=0x067b, idProduct=0x2303) # was it found? if dev is None: raise ValueError('Device not found') # b are bytes, w are words reqType = '' bReq = '' wVal = '' wIndex = '' dev.ctrl_transfer(reqType, bReq, wVal, wIndex, []) The above example is attempting to use a control transfer, which I assume is what the

I am using PyUSB in Python as I will have to listen an USB port to retrieve data from an electronic card. For the moment, I have to train myself by reading direct input from a small keyboard (USB-connected) connected to a Raspberry-Pi. Of course, I do not want to read the typed String, I expect to get ASCII codes for example. I just don't get how I could read input from my USB-keyboard. I already found some snippets : import usb.core import usb.util VENDOR_ID = 0x0922 PRODUCT_ID = 0x8003 # find the USB device device = usb.core.find(idVendor=VENDOR_ID, idProduct=PRODUCT_ID) # use the first

Need to reverse engineering bluetooth usb mouse dongle, and use mouse board to measure distance, and plot them with matplotlib I've found these tools that can help with this task: Linux lsusb usbmon usbhid-dump rfcomm hidrd-convert xxd hcitool evdev-dump Windows usblyser Bibliography: https://www.silabs.com/Support Documents/TechnicalDocs/AN249.pdf www.usb.org/developers/devclass_docs/HID1_11.pdf Usbhid-dump - digimend Linux, HID and PyUSB MagTek Credit Card Reader in Linux Evdev-dump - digimend Examples: lnx#> lsusb -s 2 Bus 005 Device 002: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth

I am trying to send data to a usb stick using the python library PyUSB. The code I am using is the following: import usb.core import usb.util # find our devices #dev = usb.core.find(idVendor=0xfffe, idProduct=0x0001) dev = usb.core.find(idVendor=0x090c, idProduct=0x1000) # was it found? if dev is None: raise ValueError('Device not found') # set the active configuration. With no arguments, the first # configuration will be the active one dev.set_configuration() # get an endpoint instance cfg = dev.get_active_configuration() interface_number = cfg[(0,0)].bInterface_number alternate_setting = usb