def __init__(self, context, device_p):
"""
You should not instanciate this class directly.
Call LibUSBContext methods to receive instances of this class.
"""
# Important: device_p refcount must be incremented before being given
# to this constructor. This class will decrement refcount upon
# destruction.
self.__context = context
self.device_p = device_p
# Fetch device descriptor
device_descriptor = libusb1.libusb_device_descriptor()
result = libusb1.libusb_get_device_descriptor(device_p,
byref(device_descriptor))
if result:
raise libusb1.USBError(result)
self.device_descriptor = device_descriptor
# Fetch all configuration descriptors
self.__configuration_descriptor_list = []
append = self.__configuration_descriptor_list.append
for configuration_id in xrange(device_descriptor.bNumConfigurations):
config = libusb1.libusb_config_descriptor_p()
result = libusb1.libusb_get_config_descriptor(device_p,
configuration_id, byref(config))
if result == libusb1.LIBUSB_ERROR_NOT_FOUND:
# Some devices (ex windows' root hubs) tell they have one
# configuration, but they have no configuration descriptor.
continue
if result:
raise libusb1.USBError(result)
append(config.contents)
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 refreshBoards(self):
dev_list = []
deviceCount = libusb1.libusb_get_device_list(self.context,
byref(self.deviceList))
if deviceCount <= 0:
print('No devices found!')
for i in range(0, deviceCount):
if libusb1.libusb_get_device_descriptor(
self.deviceList[i], byref(self.deviceDescriptor)) == 0:
if (self.deviceDescriptor.idVendor
== 0x10C4) and (self.deviceDescriptor.idProduct
== 0x87A0):
dev_list.append(self.deviceList[i])
self.device = self.deviceList[i]
# TODO: how to get device desciptor from libusb1?
if dev_list:
self.boardsChanged.emit(["cp2130"])
else:
self.boardsChanged.emit([])
def __init__(self, context, device_p):
self.context = context
libusb1.libusb_ref_device(device_p)
self.device_p = device_p
# Fetch device descriptor
device_descriptor = libusb1.libusb_device_descriptor()
result = libusb1.libusb_get_device_descriptor(device_p,
byref(device_descriptor))
if result:
raise libusb1.USBError, result
self.device_descriptor = device_descriptor
# Fetch all configuration descriptors
self.configuration_descriptor_list = []
append = self.configuration_descriptor_list.append
for configuration_id in xrange(device_descriptor.bNumConfigurations):
config = libusb1.libusb_config_descriptor_p()
result = libusb1.libusb_get_config_descriptor(device_p,
configuration_id, byref(config))
if result:
raise libusb1.USBError, result
append(config.contents)
