Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 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 | package android.hardware.gnss@1.0; |
| 18 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 19 | /** The callback interface to report measurements from the HAL. */ |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 20 | interface IGnssMeasurementCallback { |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 21 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 22 | * Flags to indicate what fields in GnssClock are valid. |
| 23 | */ |
Hridya Valsaraju | 529331c | 2016-11-22 08:17:23 -0800 | [diff] [blame] | 24 | @export(name="", value_prefix="GNSS_CLOCK_") |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 25 | enum GnssClockFlags : uint16_t { |
| 26 | /** A valid 'leap second' is stored in the data structure. */ |
| 27 | HAS_LEAP_SECOND = 1 << 0, |
| 28 | /** A valid 'time uncertainty' is stored in the data structure. */ |
| 29 | HAS_TIME_UNCERTAINTY = 1 << 1, |
| 30 | /** A valid 'full bias' is stored in the data structure. */ |
| 31 | HAS_FULL_BIAS = 1 << 2, |
| 32 | /** A valid 'bias' is stored in the data structure. */ |
| 33 | HAS_BIAS = 1 << 3, |
| 34 | /** A valid 'bias uncertainty' is stored in the data structure. */ |
| 35 | HAS_BIAS_UNCERTAINTY = 1 << 4, |
| 36 | /** A valid 'drift' is stored in the data structure. */ |
| 37 | HAS_DRIFT = 1 << 5, |
| 38 | /** A valid 'drift uncertainty' is stored in the data structure. */ |
| 39 | HAS_DRIFT_UNCERTAINTY = 1 << 6 |
| 40 | }; |
| 41 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 42 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 43 | * Flags to indicate what fields in GnssMeasurement are valid. |
| 44 | */ |
Hridya Valsaraju | 529331c | 2016-11-22 08:17:23 -0800 | [diff] [blame] | 45 | @export(name="", value_prefix="GNSS_MEASUREMENT_") |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 46 | enum GnssMeasurementFlags : uint32_t { |
| 47 | /** A valid 'snr' is stored in the data structure. */ |
| 48 | HAS_SNR = 1 << 0, |
| 49 | /** A valid 'carrier frequency' is stored in the data structure. */ |
| 50 | HAS_CARRIER_FREQUENCY = 1 << 9, |
| 51 | /** A valid 'carrier cycles' is stored in the data structure. */ |
| 52 | HAS_CARRIER_CYCLES = 1 << 10, |
| 53 | /** A valid 'carrier phase' is stored in the data structure. */ |
| 54 | HAS_CARRIER_PHASE = 1 << 11, |
| 55 | /** A valid 'carrier phase uncertainty' is stored in the data structure. */ |
gomo | c3d9278 | 2017-01-11 14:04:21 -0800 | [diff] [blame] | 56 | HAS_CARRIER_PHASE_UNCERTAINTY = 1 << 12, |
| 57 | /** A valid automatic gain control is stored in the data structure. */ |
| 58 | HAS_AUTOMATIC_GAIN_CONTROL = 1 << 13 |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 59 | }; |
| 60 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 61 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 62 | * Enumeration of available values for the GNSS Measurement's multipath |
| 63 | * indicator. |
| 64 | */ |
Hridya Valsaraju | 529331c | 2016-11-22 08:17:23 -0800 | [diff] [blame] | 65 | @export(name="", value_prefix="GNSS_MULTIPATH_") |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 66 | enum GnssMultipathIndicator : uint8_t { |
| 67 | /** The indicator is not available or unknown. */ |
| 68 | INDICATOR_UNKNOWN = 0, |
| 69 | /** The measurement is indicated to be affected by multipath. */ |
| 70 | INDICATOR_PRESENT = 1, |
| 71 | /** The measurement is indicated to be not affected by multipath. */ |
| 72 | INDICATIOR_NOT_PRESENT = 2 |
| 73 | }; |
| 74 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 75 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 76 | * Flags indicating the GNSS measurement state. |
| 77 | * |
| 78 | * The expected behavior here is for GNSS HAL to set all the flags that applies. |
| 79 | * For example, if the state for a satellite is only C/A code locked and bit |
| 80 | * synchronized, and there is still millisecond ambiguity, the state must be |
| 81 | * set as: |
| 82 | * |
| 83 | * STATE_CODE_LOCK | STATE_BIT_SYNC | STATE_MSEC_AMBIGUOUS |
| 84 | * |
| 85 | * If GNSS is still searching for a satellite, the corresponding state must be |
| 86 | * set to STATE_UNKNOWN(0). |
| 87 | */ |
Hridya Valsaraju | 529331c | 2016-11-22 08:17:23 -0800 | [diff] [blame] | 88 | @export(name="", value_prefix="GNSS_MEASUREMENT_") |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 89 | enum GnssMeasurementState : uint32_t { |
| 90 | STATE_UNKNOWN = 0, |
| 91 | STATE_CODE_LOCK = 1 << 0, |
| 92 | STATE_BIT_SYNC = 1 << 1, |
| 93 | STATE_SUBFRAME_SYNC = 1 << 2, |
| 94 | STATE_TOW_DECODED = 1 << 3, |
| 95 | STATE_MSEC_AMBIGUOUS = 1 << 4, |
| 96 | STATE_SYMBOL_SYNC = 1 << 5, |
| 97 | STATE_GLO_STRING_SYNC = 1 << 6, |
| 98 | STATE_GLO_TOD_DECODED = 1 << 7, |
| 99 | STATE_BDS_D2_BIT_SYNC = 1 << 8, |
| 100 | STATE_BDS_D2_SUBFRAME_SYNC = 1 << 9, |
| 101 | STATE_GAL_E1BC_CODE_LOCK = 1 << 10, |
| 102 | STATE_GAL_E1C_2ND_CODE_LOCK = 1 << 11, |
| 103 | STATE_GAL_E1B_PAGE_SYNC = 1 << 12, |
gomo | c3d9278 | 2017-01-11 14:04:21 -0800 | [diff] [blame] | 104 | STATE_SBAS_SYNC = 1 << 13, |
| 105 | STATE_TOW_KNOWN = 1 << 14, |
| 106 | STATE_GLO_TOD_KNOWN = 1 << 15, |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 107 | }; |
| 108 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 109 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 110 | * Flags indicating the Accumulated Delta Range's states. |
| 111 | */ |
Hridya Valsaraju | 529331c | 2016-11-22 08:17:23 -0800 | [diff] [blame] | 112 | @export(name="", value_prefix="GNSS_") |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 113 | enum GnssAccumulatedDeltaRangeState : uint16_t { |
| 114 | ADR_STATE_UNKNOWN = 0, |
| 115 | ADR_STATE_VALID = 1 << 0, |
| 116 | ADR_STATE_RESET = 1 << 1, |
| 117 | ADR_STATE_CYCLE_SLIP = 1 << 2, |
| 118 | }; |
| 119 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 120 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 121 | * Represents an estimate of the GNSS clock time. |
| 122 | */ |
| 123 | struct GnssClock { |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 124 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 125 | * A set of flags indicating the validity of the fields in this data |
| 126 | * structure. |
WyattRiley | 76ba504 | 2018-08-14 18:19:30 -0700 | [diff] [blame] | 127 | * |
| 128 | * Fields for which there is no corresponding flag must be filled in |
| 129 | * with a valid value. For convenience, these are marked as mandatory. |
| 130 | * |
| 131 | * Others fields may have invalid information in them, if not marked as |
| 132 | * valid by the corresponding bit in gnssClockFlags. |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 133 | */ |
Yifan Hong | 7037fdb | 2016-12-05 17:16:09 -0800 | [diff] [blame] | 134 | bitfield<GnssClockFlags> gnssClockFlags; |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 135 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 136 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 137 | * Leap second data. |
| 138 | * The sign of the value is defined by the following equation: |
| 139 | * utcTimeNs = timeNs - (fullBiasNs + biasNs) - leapSecond * |
| 140 | * 1,000,000,000 |
| 141 | * |
| 142 | * If this data is available, gnssClockFlags must contain |
| 143 | * HAS_LEAP_SECOND. |
| 144 | */ |
| 145 | int16_t leapSecond; |
| 146 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 147 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 148 | * The GNSS receiver internal clock value. This is the local hardware clock |
| 149 | * value. |
| 150 | * |
| 151 | * For local hardware clock, this value is expected to be monotonically |
| 152 | * increasing while the hardware clock remains powered on. (For the case of a |
| 153 | * HW clock that is not continuously on, see the |
| 154 | * hwClockDiscontinuityCount field). The receiver's estimate of GNSS time |
| 155 | * can be derived by subtracting the sum of fullBiasNs and biasNs (when |
| 156 | * available) from this value. |
| 157 | * |
| 158 | * This GNSS time must be the best estimate of current GNSS time |
| 159 | * that GNSS receiver can achieve. |
| 160 | * |
| 161 | * Sub-nanosecond accuracy can be provided by means of the 'biasNs' field. |
| 162 | * The value contains the timeUncertaintyNs in it. |
| 163 | * |
WyattRiley | 76ba504 | 2018-08-14 18:19:30 -0700 | [diff] [blame] | 164 | * This value is mandatory. |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 165 | */ |
| 166 | int64_t timeNs; |
| 167 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 168 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 169 | * 1-Sigma uncertainty associated with the clock's time in nanoseconds. |
| 170 | * The uncertainty is represented as an absolute (single sided) value. |
| 171 | * |
| 172 | * If the data is available, gnssClockFlags must contain |
| 173 | * HAS_TIME_UNCERTAINTY. Ths value is ideally zero, as the time |
| 174 | * 'latched' by timeNs is defined as the reference clock vs. which all |
| 175 | * other times (and corresponding uncertainties) are measured. |
| 176 | */ |
| 177 | double timeUncertaintyNs; |
| 178 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 179 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 180 | * The difference between hardware clock ('time' field) inside GNSS receiver |
WyattRiley | 76ba504 | 2018-08-14 18:19:30 -0700 | [diff] [blame] | 181 | * and the true GPS time since 0000Z, January 6, 1980, in nanoseconds. |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 182 | * |
| 183 | * The sign of the value is defined by the following equation: |
WyattRiley | 76ba504 | 2018-08-14 18:19:30 -0700 | [diff] [blame] | 184 | * local estimate of GPS time = timeNs - (fullBiasNs + biasNs) |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 185 | * |
WyattRiley | 76ba504 | 2018-08-14 18:19:30 -0700 | [diff] [blame] | 186 | * If receiver has computed time for a non-GPS constellation, the time offset of |
| 187 | * that constellation versus GPS time must be applied to fill this value. |
| 188 | * |
| 189 | * The error estimate for the sum of this and the biasNs is the biasUncertaintyNs. |
| 190 | * |
| 191 | * If the data is available gnssClockFlags must contain HAS_FULL_BIAS. |
| 192 | * |
| 193 | * This value is mandatory if the receiver has estimated GPS time. |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 194 | */ |
| 195 | int64_t fullBiasNs; |
| 196 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 197 | /** |
WyattRiley | 76ba504 | 2018-08-14 18:19:30 -0700 | [diff] [blame] | 198 | * Sub-nanosecond bias - used with fullBiasNS, see fullBiasNs for details. |
| 199 | * |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 200 | * The error estimate for the sum of this and the fullBiasNs is the |
| 201 | * biasUncertaintyNs. |
| 202 | * |
WyattRiley | 76ba504 | 2018-08-14 18:19:30 -0700 | [diff] [blame] | 203 | * If the data is available gnssClockFlags must contain HAS_BIAS. |
| 204 | * |
| 205 | * This value is mandatory if the receiver has estimated GPS time. |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 206 | */ |
| 207 | double biasNs; |
| 208 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 209 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 210 | * 1-Sigma uncertainty associated with the local estimate of GNSS time (clock |
| 211 | * bias) in nanoseconds. The uncertainty is represented as an absolute |
| 212 | * (single sided) value. |
| 213 | * |
WyattRiley | 76ba504 | 2018-08-14 18:19:30 -0700 | [diff] [blame] | 214 | * The caller is responsible for using this uncertainty (it can be very |
| 215 | * large before the GPS time has been fully resolved.) |
| 216 | * |
| 217 | * If the data is available gnssClockFlags must contain HAS_BIAS_UNCERTAINTY. |
| 218 | * |
| 219 | * This value is mandatory if the receiver has estimated GPS time. |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 220 | */ |
| 221 | double biasUncertaintyNs; |
| 222 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 223 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 224 | * The clock's drift in nanoseconds (per second). |
| 225 | * |
| 226 | * A positive value means that the frequency is higher than the nominal |
| 227 | * frequency, and that the (fullBiasNs + biasNs) is growing more positive |
| 228 | * over time. |
| 229 | * |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 230 | * If the data is available gnssClockFlags must contain HAS_DRIFT. |
| 231 | * |
WyattRiley | 76ba504 | 2018-08-14 18:19:30 -0700 | [diff] [blame] | 232 | * This value is mandatory if the receiver has estimated GPS time. |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 233 | */ |
| 234 | double driftNsps; |
| 235 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 236 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 237 | * 1-Sigma uncertainty associated with the clock's drift in nanoseconds (per |
| 238 | * second). |
| 239 | * The uncertainty is represented as an absolute (single sided) value. |
| 240 | * |
WyattRiley | 76ba504 | 2018-08-14 18:19:30 -0700 | [diff] [blame] | 241 | * If the data is available gnssClockFlags must contain HAS_DRIFT_UNCERTAINTY. |
| 242 | * |
| 243 | * This value is mandatory if the receiver has estimated GPS time. |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 244 | */ |
| 245 | double driftUncertaintyNsps; |
| 246 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 247 | /** |
WyattRiley | 76ba504 | 2018-08-14 18:19:30 -0700 | [diff] [blame] | 248 | * This field must be incremented, when there are discontinuities in the |
| 249 | * hardware clock. |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 250 | * |
| 251 | * A "discontinuity" is meant to cover the case of a switch from one source |
| 252 | * of clock to another. A single free-running crystal oscillator (XO) |
| 253 | * will generally not have any discontinuities, and this can be set and |
| 254 | * left at 0. |
| 255 | * |
| 256 | * If, however, the timeNs value (HW clock) is derived from a composite of |
| 257 | * sources, that is not as smooth as a typical XO, or is otherwise stopped & |
| 258 | * restarted, then this value shall be incremented each time a discontinuity |
| 259 | * occurs. (E.g. this value can start at zero at device boot-up and |
| 260 | * increment each time there is a change in clock continuity. In the |
| 261 | * unlikely event that this value reaches full scale, rollover (not |
| 262 | * clamping) is required, such that this value continues to change, during |
| 263 | * subsequent discontinuity events.) |
| 264 | * |
| 265 | * While this number stays the same, between GnssClock reports, it can be |
| 266 | * safely assumed that the timeNs value has been running continuously, e.g. |
| 267 | * derived from a single, high quality clock (XO like, or better, that is |
| 268 | * typically used during continuous GNSS signal sampling.) |
| 269 | * |
| 270 | * It is expected, esp. during periods where there are few GNSS signals |
| 271 | * available, that the HW clock be discontinuity-free as long as possible, |
| 272 | * as this avoids the need to use (waste) a GNSS measurement to fully |
| 273 | * re-solve for the GNSS clock bias and drift, when using the accompanying |
| 274 | * measurements, from consecutive GnssData reports. |
WyattRiley | 76ba504 | 2018-08-14 18:19:30 -0700 | [diff] [blame] | 275 | * |
| 276 | * This value is mandatory. |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 277 | */ |
| 278 | uint32_t hwClockDiscontinuityCount; |
| 279 | |
| 280 | }; |
| 281 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 282 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 283 | * Represents a GNSS Measurement, it contains raw and computed information. |
| 284 | * |
| 285 | * All signal measurement information (e.g. svTime, |
| 286 | * pseudorangeRate, multipathIndicator) reported in this struct must be |
| 287 | * based on GNSS signal measurements only. You must not synthesize measurements |
| 288 | * by calculating or reporting expected measurements based on known or estimated |
| 289 | * position, velocity, or time. |
| 290 | */ |
| 291 | struct GnssMeasurement{ |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 292 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 293 | * A set of flags indicating the validity of the fields in this data |
| 294 | * structure. |
WyattRiley | 76ba504 | 2018-08-14 18:19:30 -0700 | [diff] [blame] | 295 | * |
| 296 | * Fields for which there is no corresponding flag must be filled in |
| 297 | * with a valid value. For convenience, these are marked as mandatory. |
| 298 | * |
| 299 | * Others fields may have invalid information in them, if not marked as |
| 300 | * valid by the corresponding bit in flags. |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 301 | */ |
Yifan Hong | 7037fdb | 2016-12-05 17:16:09 -0800 | [diff] [blame] | 302 | bitfield<GnssMeasurementFlags> flags; |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 303 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 304 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 305 | * Satellite vehicle ID number, as defined in GnssSvInfo::svid |
WyattRiley | 76ba504 | 2018-08-14 18:19:30 -0700 | [diff] [blame] | 306 | * |
| 307 | * This value is mandatory. |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 308 | */ |
| 309 | int16_t svid; |
| 310 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 311 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 312 | * Defines the constellation of the given SV. |
WyattRiley | 76ba504 | 2018-08-14 18:19:30 -0700 | [diff] [blame] | 313 | * |
| 314 | * This value is mandatory. |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 315 | */ |
| 316 | GnssConstellationType constellation; |
| 317 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 318 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 319 | * Time offset at which the measurement was taken in nanoseconds. |
| 320 | * The reference receiver's time is specified by GnssData::clock::timeNs. |
| 321 | * |
| 322 | * The sign of timeOffsetNs is given by the following equation: |
| 323 | * measurement time = GnssClock::timeNs + timeOffsetNs |
| 324 | * |
| 325 | * It provides an individual time-stamp for the measurement, and allows |
WyattRiley | 76ba504 | 2018-08-14 18:19:30 -0700 | [diff] [blame] | 326 | * sub-nanosecond accuracy. It may be zero if all measurements are |
| 327 | * aligned to a common time. |
| 328 | * |
| 329 | * This value is mandatory. |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 330 | */ |
| 331 | double timeOffsetNs; |
| 332 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 333 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 334 | * Per satellite sync state. It represents the current sync state for the |
| 335 | * associated satellite. |
| 336 | * Based on the sync state, the 'received GNSS tow' field must be interpreted |
| 337 | * accordingly. |
| 338 | * |
WyattRiley | 76ba504 | 2018-08-14 18:19:30 -0700 | [diff] [blame] | 339 | * This value is mandatory. |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 340 | */ |
Yifan Hong | 7037fdb | 2016-12-05 17:16:09 -0800 | [diff] [blame] | 341 | bitfield<GnssMeasurementState> state; |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 342 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 343 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 344 | * The received GNSS Time-of-Week at the measurement time, in nanoseconds. |
| 345 | * For GNSS & QZSS, this is the received GNSS Time-of-Week at the |
| 346 | * measurement time, in nanoseconds. The value is relative to the |
| 347 | * beginning of the current GNSS week. |
| 348 | * |
| 349 | * Given the highest sync state that can be achieved, per each satellite, |
| 350 | * valid range for this field can be: |
| 351 | * Searching : [ 0 ] : STATE_UNKNOWN |
| 352 | * C/A code lock : [ 0 1ms ] : STATE_CODE_LOCK set |
| 353 | * Bit sync : [ 0 20ms ] : STATE_BIT_SYNC set |
| 354 | * Subframe sync : [ 0 6s ] : STATE_SUBFRAME_SYNC set |
| 355 | * TOW decoded : [ 0 1week ] : STATE_TOW_DECODED set |
gomo | c3d9278 | 2017-01-11 14:04:21 -0800 | [diff] [blame] | 356 | * TOW Known : [ 0 1week ] : STATE_TOW_KNOWN set |
| 357 | * |
| 358 | * Note: TOW Known refers to the case where TOW is possibly not decoded |
| 359 | * over the air but has been determined from other sources. If TOW |
| 360 | * decoded is set then TOW Known must also be set. |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 361 | * |
| 362 | * Note: If there is any ambiguity in integer millisecond, |
| 363 | * GNSS_MEASUREMENT_STATE_MSEC_AMBIGUOUS must be set accordingly, in the |
| 364 | * 'state' field. |
| 365 | * |
| 366 | * This value must be populated if 'state' != STATE_UNKNOWN. |
| 367 | * |
| 368 | * For Glonass, this is the received Glonass time of day, at the |
| 369 | * measurement time in nanoseconds. |
| 370 | * |
| 371 | * Given the highest sync state that can be achieved, per each satellite, |
| 372 | * valid range for this field can be: |
gomo | c3d9278 | 2017-01-11 14:04:21 -0800 | [diff] [blame] | 373 | * Searching : [ 0 ] : STATE_UNKNOWN set |
| 374 | * C/A code lock : [ 0 1ms ] : STATE_CODE_LOCK set |
| 375 | * Symbol sync : [ 0 10ms ] : STATE_SYMBOL_SYNC set |
| 376 | * Bit sync : [ 0 20ms ] : STATE_BIT_SYNC set |
| 377 | * String sync : [ 0 2s ] : STATE_GLO_STRING_SYNC set |
| 378 | * Time of day decoded : [ 0 1day ] : STATE_GLO_TOD_DECODED set |
| 379 | * Time of day known : [ 0 1day ] : STATE_GLO_TOD_KNOWN set |
| 380 | * |
| 381 | * Note: Time of day known refers to the case where it is possibly not |
| 382 | * decoded over the air but has been determined from other sources. If |
| 383 | * Time of day decoded is set then Time of day known must also be set. |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 384 | * |
| 385 | * For Beidou, this is the received Beidou time of week, |
| 386 | * at the measurement time in nanoseconds. |
| 387 | * |
| 388 | * Given the highest sync state that can be achieved, per each satellite, |
| 389 | * valid range for this field can be: |
gomo | c3d9278 | 2017-01-11 14:04:21 -0800 | [diff] [blame] | 390 | * Searching : [ 0 ] : STATE_UNKNOWN set. |
| 391 | * C/A code lock : [ 0 1ms ] : STATE_CODE_LOCK set. |
| 392 | * Bit sync (D2) : [ 0 2ms ] : STATE_BDS_D2_BIT_SYNC set. |
| 393 | * Bit sync (D1) : [ 0 20ms ] : STATE_BIT_SYNC set. |
| 394 | * Subframe (D2) : [ 0 0.6s ] : STATE_BDS_D2_SUBFRAME_SYNC set. |
| 395 | * Subframe (D1) : [ 0 6s ] : STATE_SUBFRAME_SYNC set. |
| 396 | * Time of week decoded : [ 0 1week ] : STATE_TOW_DECODED set. |
| 397 | * Time of week known : [ 0 1week ] : STATE_TOW_KNOWN set |
| 398 | * |
| 399 | * Note: TOW Known refers to the case where TOW is possibly not decoded |
| 400 | * over the air but has been determined from other sources. If TOW |
| 401 | * decoded is set then TOW Known must also be set. |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 402 | * |
| 403 | * For Galileo, this is the received Galileo time of week, |
| 404 | * at the measurement time in nanoseconds. |
| 405 | * |
gomo | c3d9278 | 2017-01-11 14:04:21 -0800 | [diff] [blame] | 406 | * E1BC code lock : [ 0 4ms ] : STATE_GAL_E1BC_CODE_LOCK set. |
| 407 | * E1C 2nd code lock : [ 0 100ms] : STATE_GAL_E1C_2ND_CODE_LOCK set. |
| 408 | * E1B page : [ 0 2s ] : STATE_GAL_E1B_PAGE_SYNC set. |
| 409 | * Time of week decoded : [ 0 1week] : STATE_TOW_DECODED is set. |
| 410 | * Time of week known : [ 0 1week] : STATE_TOW_KNOWN set |
| 411 | * |
| 412 | * Note: TOW Known refers to the case where TOW is possibly not decoded |
| 413 | * over the air but has been determined from other sources. If TOW |
| 414 | * decoded is set then TOW Known must also be set. |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 415 | * |
| 416 | * For SBAS, this is received SBAS time, at the measurement time in |
| 417 | * nanoseconds. |
| 418 | * |
| 419 | * Given the highest sync state that can be achieved, per each satellite, |
| 420 | * valid range for this field can be: |
| 421 | * Searching : [ 0 ] : STATE_UNKNOWN |
| 422 | * C/A code lock: [ 0 1ms ] : STATE_CODE_LOCK is set |
| 423 | * Symbol sync : [ 0 2ms ] : STATE_SYMBOL_SYNC is set |
| 424 | * Message : [ 0 1s ] : STATE_SBAS_SYNC is set |
| 425 | */ |
| 426 | int64_t receivedSvTimeInNs; |
| 427 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 428 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 429 | * 1-Sigma uncertainty of the Received GNSS Time-of-Week in nanoseconds. |
| 430 | * |
| 431 | * This value must be populated if 'state' != STATE_UNKNOWN. |
| 432 | */ |
| 433 | int64_t receivedSvTimeUncertaintyInNs; |
| 434 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 435 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 436 | * Carrier-to-noise density in dB-Hz, typically in the range [0, 63]. |
| 437 | * It contains the measured C/N0 value for the signal at the antenna port. |
| 438 | * |
WyattRiley | 76ba504 | 2018-08-14 18:19:30 -0700 | [diff] [blame] | 439 | * This value is mandatory. |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 440 | */ |
| 441 | double cN0DbHz; |
| 442 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 443 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 444 | * Pseudorange rate at the timestamp in m/s. The correction of a given |
| 445 | * Pseudorange Rate value includes corrections for receiver and satellite |
| 446 | * clock frequency errors. Ensure that this field is independent (see |
| 447 | * comment at top of GnssMeasurement struct.) |
| 448 | * |
| 449 | * It is mandatory to provide the 'uncorrected' 'pseudorange rate', and |
| 450 | * provide GnssClock's 'drift' field as well. When providing the |
| 451 | * uncorrected pseudorange rate, do not apply the corrections described above.) |
| 452 | * |
| 453 | * The value includes the 'pseudorange rate uncertainty' in it. |
| 454 | * A positive 'uncorrected' value indicates that the SV is moving away from |
| 455 | * the receiver. |
| 456 | * |
| 457 | * The sign of the 'uncorrected' 'pseudorange rate' and its relation to the |
| 458 | * sign of 'doppler shift' is given by the equation: |
| 459 | * pseudorange rate = -k * doppler shift (where k is a constant) |
| 460 | * |
| 461 | * This must be the most accurate pseudorange rate available, based on |
| 462 | * fresh signal measurements from this channel. |
| 463 | * |
| 464 | * It is mandatory that this value be provided at typical carrier phase PRR |
| 465 | * quality (few cm/sec per second of uncertainty, or better) - when signals |
| 466 | * are sufficiently strong & stable, e.g. signals from a GNSS simulator at >= |
| 467 | * 35 dB-Hz. |
| 468 | */ |
| 469 | double pseudorangeRateMps; |
| 470 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 471 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 472 | * 1-Sigma uncertainty of the pseudorangeRateMps. |
| 473 | * The uncertainty is represented as an absolute (single sided) value. |
| 474 | * |
WyattRiley | 76ba504 | 2018-08-14 18:19:30 -0700 | [diff] [blame] | 475 | * This value is mandatory. |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 476 | */ |
| 477 | double pseudorangeRateUncertaintyMps; |
| 478 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 479 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 480 | * Accumulated delta range's state. It indicates whether ADR is reset or |
| 481 | * there is a cycle slip(indicating loss of lock). |
| 482 | * |
WyattRiley | 76ba504 | 2018-08-14 18:19:30 -0700 | [diff] [blame] | 483 | * This value is mandatory. |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 484 | */ |
Yifan Hong | 7037fdb | 2016-12-05 17:16:09 -0800 | [diff] [blame] | 485 | bitfield<GnssAccumulatedDeltaRangeState> accumulatedDeltaRangeState; |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 486 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 487 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 488 | * Accumulated delta range since the last channel reset in meters. |
| 489 | * A positive value indicates that the SV is moving away from the receiver. |
| 490 | * |
| 491 | * The sign of the 'accumulated delta range' and its relation to the sign of |
| 492 | * 'carrier phase' is given by the equation: |
| 493 | * accumulated delta range = -k * carrier phase (where k is a constant) |
| 494 | * |
| 495 | * This value must be populated if 'accumulated delta range state' != |
| 496 | * ADR_STATE_UNKNOWN. |
| 497 | * However, it is expected that the data is only accurate when: |
| 498 | * 'accumulated delta range state' == ADR_STATE_VALID. |
| 499 | */ |
| 500 | double accumulatedDeltaRangeM; |
| 501 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 502 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 503 | * 1-Sigma uncertainty of the accumulated delta range in meters. |
| 504 | * This value must be populated if 'accumulated delta range state' != |
| 505 | * ADR_STATE_UNKNOWN. |
| 506 | */ |
| 507 | double accumulatedDeltaRangeUncertaintyM; |
| 508 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 509 | /** |
gomo | c3d9278 | 2017-01-11 14:04:21 -0800 | [diff] [blame] | 510 | * Carrier frequency of the signal tracked, for example it can be the |
gomo | d567a99 | 2017-01-20 00:00:42 -0800 | [diff] [blame] | 511 | * GPS central frequency for L1 = 1575.45 MHz, or L2 = 1227.60 MHz, L5 = |
| 512 | * 1176.45 MHz, varying GLO channels, etc. If the field is not set, it |
| 513 | * is the primary common use central frequency, e.g. L1 = 1575.45 MHz |
| 514 | * for GPS. |
| 515 | * |
| 516 | * For an L1, L5 receiver tracking a satellite on L1 and L5 at the same |
| 517 | * time, two raw measurement structs must be reported for this same |
| 518 | * satellite, in one of the measurement structs, all the values related |
| 519 | * to L1 must be filled, and in the other all of the values related to |
| 520 | * L5 must be filled. |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 521 | * |
Wyatt Riley | 0093415 | 2017-10-19 10:59:24 -0700 | [diff] [blame] | 522 | * If the data is available, gnssMeasurementFlags must contain |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 523 | * HAS_CARRIER_FREQUENCY. |
| 524 | */ |
| 525 | float carrierFrequencyHz; |
| 526 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 527 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 528 | * The number of full carrier cycles between the satellite and the |
| 529 | * receiver. The reference frequency is given by the field |
| 530 | * 'carrierFrequencyHz'. Indications of possible cycle slips and |
| 531 | * resets in the accumulation of this value can be inferred from the |
| 532 | * accumulatedDeltaRangeState flags. |
| 533 | * |
Wyatt Riley | 0093415 | 2017-10-19 10:59:24 -0700 | [diff] [blame] | 534 | * If the data is available, gnssMeasurementFlags must contain |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 535 | * HAS_CARRIER_CYCLES. |
| 536 | */ |
| 537 | int64_t carrierCycles; |
| 538 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 539 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 540 | * The RF phase detected by the receiver, in the range [0.0, 1.0]. |
| 541 | * This is usually the fractional part of the complete carrier phase |
| 542 | * measurement. |
| 543 | * |
| 544 | * The reference frequency is given by the field 'carrierFrequencyHz'. |
| 545 | * The value contains the 'carrier-phase uncertainty' in it. |
| 546 | * |
Wyatt Riley | 0093415 | 2017-10-19 10:59:24 -0700 | [diff] [blame] | 547 | * If the data is available, gnssMeasurementFlags must contain |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 548 | * HAS_CARRIER_PHASE. |
| 549 | */ |
| 550 | double carrierPhase; |
| 551 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 552 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 553 | * 1-Sigma uncertainty of the carrier-phase. |
Wyatt Riley | 0093415 | 2017-10-19 10:59:24 -0700 | [diff] [blame] | 554 | * If the data is available, gnssMeasurementFlags must contain |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 555 | * HAS_CARRIER_PHASE_UNCERTAINTY. |
| 556 | */ |
| 557 | double carrierPhaseUncertainty; |
| 558 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 559 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 560 | * An enumeration that indicates the 'multipath' state of the event. |
| 561 | * |
| 562 | * The multipath Indicator is intended to report the presence of overlapping |
| 563 | * signals that manifest as distorted correlation peaks. |
| 564 | * |
| 565 | * - if there is a distorted correlation peak shape, report that multipath |
| 566 | * is MULTIPATH_INDICATOR_PRESENT. |
| 567 | * - if there is no distorted correlation peak shape, report |
| 568 | * MULTIPATH_INDICATOR_NOT_PRESENT |
| 569 | * - if signals are too weak to discern this information, report |
| 570 | * MULTIPATH_INDICATOR_UNKNOWN |
| 571 | * |
| 572 | * Example: when doing the standardized overlapping Multipath Performance |
| 573 | * test (3GPP TS 34.171) the Multipath indicator must report |
| 574 | * MULTIPATH_INDICATOR_PRESENT for those signals that are tracked, and |
| 575 | * contain multipath, and MULTIPATH_INDICATOR_NOT_PRESENT for those |
| 576 | * signals that are tracked and do not contain multipath. |
| 577 | */ |
| 578 | GnssMultipathIndicator multipathIndicator; |
| 579 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 580 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 581 | * Signal-to-noise ratio at correlator output in dB. |
Yu Liu | 216b870 | 2017-05-02 11:33:20 -0700 | [diff] [blame] | 582 | * If the data is available, GnssMeasurementFlags must contain HAS_SNR. |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 583 | * This is the power ratio of the "correlation peak height above the |
| 584 | * observed noise floor" to "the noise RMS". |
| 585 | */ |
| 586 | double snrDb; |
gomo | c3d9278 | 2017-01-11 14:04:21 -0800 | [diff] [blame] | 587 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 588 | /** |
gomo | c3d9278 | 2017-01-11 14:04:21 -0800 | [diff] [blame] | 589 | * Automatic gain control (AGC) level. AGC acts as a variable gain |
gomo | d567a99 | 2017-01-20 00:00:42 -0800 | [diff] [blame] | 590 | * amplifier adjusting the power of the incoming signal. The AGC level |
| 591 | * may be used to indicate potential interference. When AGC is at a |
| 592 | * nominal level, this value must be set as 0. Higher gain (and/or lower |
| 593 | * input power) must be output as a positive number. Hence in cases of |
| 594 | * strong jamming, in the band of this signal, this value must go more |
| 595 | * negative. |
gomo | c3d9278 | 2017-01-11 14:04:21 -0800 | [diff] [blame] | 596 | * |
| 597 | * Note: Different hardware designs (e.g. antenna, pre-amplification, or |
| 598 | * other RF HW components) may also affect the typical output of of this |
| 599 | * value on any given hardware design in an open sky test - the |
| 600 | * important aspect of this output is that changes in this value are |
| 601 | * indicative of changes on input signal power in the frequency band for |
| 602 | * this measurement. |
| 603 | */ |
| 604 | double agcLevelDb; |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 605 | }; |
| 606 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 607 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 608 | * Represents a reading of GNSS measurements. For devices where GnssSystemInfo's |
| 609 | * yearOfHw is set to 2016+, it is mandatory that these be provided, on |
| 610 | * request, when the GNSS receiver is searching/tracking signals. |
| 611 | * |
| 612 | * - Reporting of GNSS constellation measurements is mandatory. |
| 613 | * - Reporting of all tracked constellations are encouraged. |
| 614 | */ |
| 615 | struct GnssData { |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 616 | /** Number of GnssMeasurement elements. */ |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 617 | uint32_t measurementCount; |
| 618 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 619 | /** The array of measurements. */ |
Hridya Valsaraju | 97ecaa0 | 2016-11-02 10:20:07 -0700 | [diff] [blame] | 620 | GnssMeasurement[GnssMax:SVS_COUNT] measurements; |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 621 | |
| 622 | /** The GNSS clock time reading. */ |
| 623 | GnssClock clock; |
| 624 | }; |
| 625 | |
Andreas Huber | 40d3a9b | 2017-03-28 16:19:16 -0700 | [diff] [blame] | 626 | /** |
Hridya Valsaraju | e596a71 | 2016-09-22 14:07:22 -0700 | [diff] [blame] | 627 | * Callback for the hal to pass a GnssData structure back to the client. |
| 628 | * |
| 629 | * @param data Contains a reading of GNSS measurements. |
| 630 | */ |
| 631 | GnssMeasurementCb(GnssData data); |
| 632 | }; |