def __init__(self,
path: str,
epIn: int,
epOut: int,
onReceive: Callable[[bytes], None],
onReceiveSize: int = 1):
"""Constructor.
@param path: The device path.
@param epIn: The endpoint to read data from.
@param epOut: The endpoint to write data to.
@param onReceive: A callable taking a received input report as its only argument.
"""
if _isDebug():
log.debug("Opening device %s" % path)
readPath = "{path}\\{endpoint}".format(path=path, endpoint=epIn)
writePath = "{path}\\{endpoint}".format(path=path, endpoint=epOut)
readHandle = CreateFile(readPath, winKernel.GENERIC_READ, 0, None,
winKernel.OPEN_EXISTING, FILE_FLAG_OVERLAPPED,
None)
if readHandle == INVALID_HANDLE_VALUE:
if _isDebug():
log.debug("Open read handle failed: %s" % ctypes.WinError())
raise ctypes.WinError()
writeHandle = CreateFile(writePath, winKernel.GENERIC_WRITE, 0, None,
winKernel.OPEN_EXISTING, FILE_FLAG_OVERLAPPED,
None)
if writeHandle == INVALID_HANDLE_VALUE:
if _isDebug():
log.debug("Open write handle failed: %s" % ctypes.WinError())
raise ctypes.WinError()
super(Bulk, self).__init__(readHandle,
onReceive,
writeFileHandle=writeHandle,
onReceiveSize=onReceiveSize)
def __init__(self, path, onReceive):
"""Constructor.
@param path: The device path.
This can be retrieved using L{hwPortUtils.listHidDevices}.
@type path: unicode
@param onReceive: A callable taking a received input report as its only argument.
@type onReceive: callable(str)
"""
if _isDebug():
log.debug("Opening device %s" % path)
handle = CreateFile(path,
winKernel.GENERIC_READ | winKernel.GENERIC_WRITE,
0, None, winKernel.OPEN_EXISTING,
FILE_FLAG_OVERLAPPED, None)
if handle == INVALID_HANDLE_VALUE:
if _isDebug():
log.debug("Open failed: %s" % ctypes.WinError())
raise ctypes.WinError()
pd = ctypes.c_void_p()
if not ctypes.windll.hid.HidD_GetPreparsedData(handle, byref(pd)):
raise ctypes.WinError()
caps = HIDP_CAPS()
ctypes.windll.hid.HidP_GetCaps(pd, byref(caps))
ctypes.windll.hid.HidD_FreePreparsedData(pd)
if _isDebug():
log.debug("Report byte lengths: input %d, output %d, feature %d" %
(caps.InputReportByteLength, caps.OutputReportByteLength,
caps.FeatureReportByteLength))
self._featureSize = caps.FeatureReportByteLength
# Reading any less than caps.InputReportByteLength is an error.
# On Windows 7, writing any less than caps.OutputReportByteLength is also an error.
super(Hid, self).__init__(handle,
onReceive,
onReceiveSize=caps.InputReportByteLength,
writeSize=caps.OutputReportByteLength)
def __init__(self,
path: str,
epIn: int,
epOut: int,
onReceive: Callable[[bytes], None],
onReceiveSize: int = 1,
onReadError: Optional[Callable[[int], bool]] = None):
"""Constructor.
@param path: The device path.
@param epIn: The endpoint to read data from.
@param epOut: The endpoint to write data to.
@param onReceive: A callable taking a received input report as its only argument.
@param onReadError: An optional callable that handles read errors.
It takes an error code and returns True if the error has been handled,
allowing the read loop to exit cleanly, or False if an exception should be thrown.
"""
if _isDebug():
log.debug("Opening device %s" % path)
readPath = "{path}\\{endpoint}".format(path=path, endpoint=epIn)
writePath = "{path}\\{endpoint}".format(path=path, endpoint=epOut)
readHandle = CreateFile(readPath, winKernel.GENERIC_READ, 0, None,
winKernel.OPEN_EXISTING, FILE_FLAG_OVERLAPPED,
None)
if readHandle == INVALID_HANDLE_VALUE:
if _isDebug():
log.debug("Open read handle failed: %s" % ctypes.WinError())
raise ctypes.WinError()
writeHandle = CreateFile(writePath, winKernel.GENERIC_WRITE, 0, None,
winKernel.OPEN_EXISTING, FILE_FLAG_OVERLAPPED,
None)
if writeHandle == INVALID_HANDLE_VALUE:
if _isDebug():
log.debug("Open write handle failed: %s" % ctypes.WinError())
raise ctypes.WinError()
super(Bulk, self).__init__(readHandle,
onReceive,
writeFileHandle=writeHandle,
onReceiveSize=onReceiveSize,
onReadError=onReadError)
def _getHidInfo(hwId, path):
info = {"hardwareID": hwId, "devicePath": path}
hwId = hwId.split("\\", 1)[1]
if hwId.startswith("VID"):
info["provider"] = "usb"
info["usbID"] = hwId[:17] # VID_xxxx&PID_xxxx
elif hwId.startswith("{00001124-0000-1000-8000-00805f9b34fb}"):
info["provider"] = "bluetooth"
else:
# Unknown provider.
info["provider"] = None
return info
# Fetch additional info about the HID device.
from serial.win32 import CreateFile, INVALID_HANDLE_VALUE, FILE_FLAG_OVERLAPPED
handle = CreateFile(path, 0,
winKernel.FILE_SHARE_READ | winKernel.FILE_SHARE_WRITE,
None, winKernel.OPEN_EXISTING, FILE_FLAG_OVERLAPPED,
None)
if handle == INVALID_HANDLE_VALUE:
if _isDebug():
log.debugWarning(
"Opening device {dev} to get additional info failed: {exc}".
format(dev=path, exc=ctypes.WinError()))
return info
try:
attribs = HIDD_ATTRIBUTES()
if ctypes.windll.hid.HidD_GetAttributes(handle, ctypes.byref(attribs)):
info["vendorID"] = attribs.VendorID
info["productID"] = attribs.ProductID
info["versionNumber"] = attribs.VersionNumber
else:
if _isDebug():
log.debugWarning("HidD_GetAttributes failed")
buf = ctypes.create_unicode_buffer(128)
bytes = ctypes.sizeof(buf)
if ctypes.windll.hid.HidD_GetManufacturerString(handle, buf, bytes):
info["manufacturer"] = buf.value
if ctypes.windll.hid.HidD_GetProductString(handle, buf, bytes):
info["product"] = buf.value
pd = ctypes.c_void_p()
if ctypes.windll.hid.HidD_GetPreparsedData(handle, ctypes.byref(pd)):
try:
caps = hidpi.HIDP_CAPS()
ctypes.windll.hid.HidP_GetCaps(pd, ctypes.byref(caps))
info['HIDUsagePage'] = caps.UsagePage
finally:
ctypes.windll.hid.HidD_FreePreparsedData(pd)
finally:
winKernel.closeHandle(handle)
return info
def _getHidInfo(hwId, path):
info = {"hardwareID": hwId, "devicePath": path}
hwId = hwId.split("\\", 1)[1]
if hwId.startswith("VID"):
info["provider"] = "usb"
info["usbID"] = hwId[:17] # VID_xxxx&PID_xxxx
return info
if not hwId.startswith(
"{00001124-0000-1000-8000-00805f9b34fb}"): # Not Bluetooth
# Unknown provider.
info["provider"] = None
return info
info["provider"] = "bluetooth"
# Fetch additional info about the HID device.
# This is a bit slow, so we only do it for Bluetooth,
# as this info might be necessary to identify Bluetooth devices.
from serial.win32 import CreateFile, INVALID_HANDLE_VALUE, FILE_FLAG_OVERLAPPED
handle = CreateFile(path, 0,
winKernel.FILE_SHARE_READ | winKernel.FILE_SHARE_WRITE,
None, winKernel.OPEN_EXISTING, FILE_FLAG_OVERLAPPED,
None)
if handle == INVALID_HANDLE_VALUE:
if _isDebug():
log.debug(
u"Opening device {dev} to get additional info failed: {exc}".
format(dev=path, exc=ctypes.WinError()))
return info
try:
attribs = HIDD_ATTRIBUTES()
if ctypes.windll.hid.HidD_GetAttributes(handle, ctypes.byref(attribs)):
info["vendorID"] = attribs.VendorID
info["productID"] = attribs.ProductID
info["versionNumber"] = attribs.VersionNumber
buf = ctypes.create_unicode_buffer(128)
bytes = ctypes.sizeof(buf)
if ctypes.windll.hid.HidD_GetManufacturerString(handle, buf, bytes):
info["manufacturer"] = buf.value
if ctypes.windll.hid.HidD_GetProductString(handle, buf, bytes):
info["product"] = buf.value
finally:
winKernel.closeHandle(handle)
return info
def __init__(self,
path: str,
onReceive: Callable[[bytes], None],
exclusive: bool = True):
"""Constructor.
@param path: The device path.
This can be retrieved using L{hwPortUtils.listHidDevices}.
@param onReceive: A callable taking a received input report as its only argument.
@param exclusive: Whether to block other application's access to this device.
"""
if _isDebug():
log.debug("Opening device %s" % path)
handle = CreateFile(
path, winKernel.GENERIC_READ | winKernel.GENERIC_WRITE,
0 if exclusive else winKernel.FILE_SHARE_READ
| winKernel.FILE_SHARE_WRITE, None, winKernel.OPEN_EXISTING,
FILE_FLAG_OVERLAPPED, None)
if handle == INVALID_HANDLE_VALUE:
if _isDebug():
log.debug("Open failed: %s" % ctypes.WinError())
raise ctypes.WinError()
pd = ctypes.c_void_p()
if not hidDll.HidD_GetPreparsedData(handle, byref(pd)):
raise ctypes.WinError()
self._pd = pd
caps = self.caps
self.usagePage = caps.UsagePage
if _isDebug():
log.debug("usage ID: 0X%X" % caps.Usage)
log.debug("usage page: 0X%X" % caps.UsagePage)
log.debug("Report byte lengths: input %d, output %d, feature %d" %
(caps.InputReportByteLength, caps.OutputReportByteLength,
caps.FeatureReportByteLength))
self._featureSize = caps.FeatureReportByteLength
self._writeSize = caps.OutputReportByteLength
self._readSize = caps.InputReportByteLength
# Reading any less than caps.InputReportByteLength is an error.
super().__init__(handle,
onReceive,
onReceiveSize=caps.InputReportByteLength)