def open(self): """ Open device. Returns an USBDeviceHandle instance. """ handle = libusb1.libusb_device_handle_p() result = libusb1.libusb_open(self.device_p, byref(handle)) if result: raise libusb1.USBError(result) return USBDeviceHandle(self.__context, handle)
def open_cp2130(): context = libusb1.libusb_context_p() deviceList = libusb1.libusb_device_p_p() deviceCount = 0 deviceDescriptor = libusb1.libusb_device_descriptor() device = libusb1.libusb_device_p() cp2130Handle = libusb1.libusb_device_handle_p() kernelAttached = 0 if libusb1.libusb_init(byref(context)) != 0: print('Could not initialize libusb!') exit_cp2130() deviceCount = libusb1.libusb_get_device_list(context, byref(deviceList)) if deviceCount <= 0: print('No devices found!') exit_cp2130() for i in range(0, deviceCount): if libusb1.libusb_get_device_descriptor(deviceList[i], byref(deviceDescriptor)) == 0: if (deviceDescriptor.idVendor == 0x10C4) and (deviceDescriptor.idProduct == 0x87A0): device = deviceList[i] break if device == None: print('CP2130 device not found!') exit_cp2130() if libusb1.libusb_open(device, byref(cp2130Handle)) != 0: print('Could not open device!') exit_cp2130() if libusb1.libusb_kernel_driver_active(cp2130Handle, 0) != 0: libusb1.libusb_detach_kernel_driver(cp2130Handle, 0) kernelAttached = 1 if libusb1.libusb_claim_interface(cp2130Handle, 0) != 0: print('Could not claim interface!') exit_cp2130() if cp2130_libusb_set_usb_config(cp2130Handle) == False: exit_cp2130() if cp2130_libusb_set_spi_word(cp2130Handle) == False: exit_cp2130() print('Successfully opened CP2130!') return cp2130Handle, kernelAttached, deviceList, context
def connectToBoard(self, board): # open device if libusb1.libusb_open(self.device, byref(self.cp2130Handle)) != 0: print('Could not open device!') return # See if a kernel driver is active already, if so detach it and store a flag so we can reattach when we are done if libusb1.libusb_kernel_driver_active(self.cp2130Handle, 0) != 0: libusb1.libusb_detach_kernel_driver(self.cp2130Handle, 0) self.kernelAttached = 1 # claim the device if libusb1.libusb_claim_interface(self.cp2130Handle, 0) != 0: print('Could not claim interface!') return print("Connected to {}".format(board)) cp2130_libusb_set_spi_word(self.cp2130Handle) cp2130_libusb_set_usb_config(self.cp2130Handle) self.connStateChanged.emit(True)
def open(self): handle = libusb1.libusb_device_handle_p() result = libusb1.libusb_open(self.device_p, byref(handle)) if result: raise libusb1.USBError, result return USBDeviceHandle(self.context, handle)