| #/usr/bin/env python3.4 |
| # |
| # Copyright (C) 2016 The Android Open Source Project |
| # |
| # 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. |
| """ |
| This test script exercises GATT notify/indicate procedures. |
| """ |
| |
| from acts.test_utils.bt.BluetoothBaseTest import BluetoothBaseTest |
| from acts.test_utils.bt.GattConnectedBaseTest import GattConnectedBaseTest |
| from acts.test_utils.bt.GattEnum import GattCharacteristic |
| from acts.test_utils.bt.GattEnum import GattDescriptor |
| from acts.test_utils.bt.GattEnum import MtuSize |
| from acts.test_utils.bt.GattEnum import GattEvent |
| from acts.test_utils.bt.GattEnum import GattCbStrings |
| from math import ceil |
| |
| |
| class GattNotifyTest(GattConnectedBaseTest): |
| @BluetoothBaseTest.bt_test_wrap |
| def test_notify_char(self): |
| """Test notify characteristic value. |
| |
| Test GATT notify characteristic value. |
| |
| Steps: |
| 1. Central: write CCC - register for notifications. |
| 2. Peripheral: receive CCC modification. |
| 3. Peripheral: send characteristic notification. |
| 4. Central: receive notification, verify it's conent matches what was |
| sent |
| |
| Expected Result: |
| Verify that notification registration and delivery works. |
| |
| Returns: |
| Pass if True |
| Fail if False |
| |
| TAGS: LE, GATT, Characteristic |
| Priority: 0 |
| """ |
| #write CCC descriptor to enable notifications |
| self.cen_ad.droid.gattClientDescriptorSetValue( |
| self.bluetooth_gatt, self.discovered_services_index, |
| self.test_service_index, self.NOTIFIABLE_CHAR_UUID, |
| self.CCC_DESC_UUID, GattDescriptor.ENABLE_NOTIFICATION_VALUE.value) |
| |
| self.cen_ad.droid.gattClientWriteDescriptor( |
| self.bluetooth_gatt, self.discovered_services_index, |
| self.test_service_index, self.NOTIFIABLE_CHAR_UUID, |
| self.CCC_DESC_UUID) |
| |
| #enable notifications in app |
| self.cen_ad.droid.gattClientSetCharacteristicNotification( |
| self.bluetooth_gatt, self.discovered_services_index, |
| self.test_service_index, self.NOTIFIABLE_CHAR_UUID, True) |
| |
| event = self._server_wait(GattEvent.DESC_WRITE_REQ) |
| |
| request_id = event['data']['requestId'] |
| bt_device_id = 0 |
| status = 0 |
| #confirm notification registration was successful |
| self.per_ad.droid.gattServerSendResponse( |
| self.gatt_server, bt_device_id, request_id, status, 0, []) |
| #wait for client to get response |
| event = self._client_wait(GattEvent.DESC_WRITE) |
| |
| #set notified value |
| notified_value = [1,5,9,7,5,3,6,4,8,2] |
| self.per_ad.droid.gattServerCharacteristicSetValue( |
| self.notifiable_char_index, notified_value) |
| |
| #send notification |
| self.per_ad.droid.gattServerNotifyCharacteristicChanged( |
| self.gatt_server, bt_device_id, |
| self.notifiable_char_index, False) |
| |
| #wait for client to receive the notification |
| event = self._client_wait(GattEvent.CHAR_CHANGE) |
| self.assertEqual(notified_value, event["data"]["CharacteristicValue"]) |
| |
| return True |
