1 /* 2 * Copyright (C) 2018 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 17 #ifndef LOCATION_LBS_CONTEXTHUB_NANOAPPS_CALIBRATION_OVER_TEMP_OVER_TEMP_MODEL_H_ 18 #define LOCATION_LBS_CONTEXTHUB_NANOAPPS_CALIBRATION_OVER_TEMP_OVER_TEMP_MODEL_H_ 19 20 #include <stdint.h> 21 22 #ifdef __cplusplus 23 extern "C" { 24 #endif 25 26 // Defines the maximum size of the OverTempCal 'model_data' array. 27 #define OTC_MODEL_SIZE (40) 28 29 /* 30 * Over-temperature data structures that contain a modeled sensor offset 31 * estimate, an associated temperature, and the age of the data point since it 32 * first entered the model. 33 */ 34 35 struct OverTempModelThreeAxis { 36 // Sensor offset estimate, temperature, and age timestamp. 37 uint64_t offset_age_nanos; // [nanoseconds] 38 float offset_temp_celsius; // [Celsius] 39 40 // Three-axis offset estimate (indices: 0=x, 1=y, 2=z). 41 float offset[3]; 42 }; 43 44 struct OverTempModelSingleAxis { 45 // Sensor offset estimate, temperature, and age timestamp. 46 uint64_t offset_age_nanos; // [nanoseconds] 47 float offset_temp_celsius; // [Celsius] 48 49 // Single-axis offset estimate. 50 float offset; 51 }; 52 53 #ifdef __cplusplus 54 } 55 #endif 56 57 #endif // LOCATION_LBS_CONTEXTHUB_NANOAPPS_CALIBRATION_OVER_TEMP_OVER_TEMP_MODEL_H_ 58