| # |
| # Copyright (c) 2021 Project CHIP Authors |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| # |
| |
| import chip.native |
| import ctypes |
| from ctypes import c_bool, c_void_p, c_char_p, c_uint32, py_object |
| from chip.ble.types import DeviceScannedCallback, ScanDoneCallback |
| |
| |
| # This prevents python auto-casting c_void_p to integers and |
| # auto-casting 32/64 bit values to int/long respectively. Without this |
| # passing in c_void_p does not see to work well for numbers |
| # in [0x80000000; 0xFFFFFFFF] (argument will be auto-cast to 64-bit negative) |
| class VoidPointer(c_void_p): |
| pass |
| |
| |
| def _GetBleLibraryHandle() -> ctypes.CDLL: |
| """ Get the native library handle with BLE method initialization. |
| |
| Retreives the CHIP native library handle and attaches signatures to |
| native methods. |
| """ |
| |
| handle = chip.native.GetLibraryHandle() |
| |
| # Uses one of the type decorators as an indicator for everything being |
| # initialized. Native methods default to c_int return types |
| if handle.pychip_ble_adapter_list_new.restype != VoidPointer: |
| setter = chip.native.NativeLibraryHandleMethodArguments(handle) |
| |
| setter.Set('pychip_ble_adapter_list_new', VoidPointer, []) |
| setter.Set('pychip_ble_adapter_list_next', c_bool, [VoidPointer]) |
| setter.Set('pychip_ble_adapter_list_get_index', |
| c_uint32, [VoidPointer]) |
| setter.Set('pychip_ble_adapter_list_get_address', |
| c_char_p, [VoidPointer]) |
| setter.Set('pychip_ble_adapter_list_get_alias', |
| c_char_p, [VoidPointer]) |
| setter.Set('pychip_ble_adapter_list_get_name', c_char_p, [VoidPointer]) |
| setter.Set('pychip_ble_adapter_list_is_powered', c_bool, [VoidPointer]) |
| setter.Set('pychip_ble_adapter_list_delete', None, [VoidPointer]) |
| setter.Set('pychip_ble_adapter_list_get_raw_adapter', |
| VoidPointer, [VoidPointer]) |
| |
| setter.Set('pychip_ble_start_scanning', VoidPointer, [ |
| py_object, VoidPointer, c_uint32, DeviceScannedCallback, ScanDoneCallback |
| ]) |
| |
| return handle |