1/* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.hardware.gnss@1.1; 18 19import @1.0::IGnssMeasurement; 20import IGnssMeasurementCallback; 21 22/** 23 * Extended interface for GNSS Measurements support. 24 */ 25interface IGnssMeasurement extends @1.0::IGnssMeasurement { 26 27 /** 28 * Initializes the interface and registers the callback routines with the HAL. After a 29 * successful call to 'setCallback_1_1' the HAL must begin to provide updates at an average 30 * output rate of 1Hz (occasional intra-measurement time offsets in the range from 0-2000msec 31 * can be tolerated.) 32 * 33 * @param callback Handle to GnssMeasurement callback interface. 34 * @param enableFullTracking If true, GNSS chipset must switch off duty cycling. In such mode 35 * no clock discontinuities are expected and, when supported, carrier phase should be 36 * continuous in good signal conditions. All non-blacklisted, healthy constellations, 37 * satellites and frequency bands that the chipset supports must be reported in this mode. 38 * The GNSS chipset is allowed to consume more power in this mode. If false, API must behave 39 * as in HAL V1_0, optimizing power via duty cycling, constellations and frequency limits, 40 * etc. 41 * 42 * @return initRet Returns SUCCESS if successful. Returns ERROR_ALREADY_INIT if a callback has 43 * already been registered without a corresponding call to 'close'. Returns ERROR_GENERIC 44 * for any other error. The HAL must not generate any other updates upon returning this 45 * error code. 46 */ 47 setCallback_1_1(IGnssMeasurementCallback callback, bool enableFullTracking) 48 generates (GnssMeasurementStatus initRet); 49 50}; 51