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sm8450-common: gps: GNSS adapter: need to check validity of elapsed real time

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1: Need to check the validity of elapased real time before
   marking it as valid
2: Increase the allowed time between two get boot time call
   from 10 micro seconds to 2 milli-seconds

Change-Id: If2f7ddb23ce72cb52f294ff44353f5c9a9421a9c
CRs-fixed: 3281559
This commit is contained in:
Vrutti Patel
2023-07-06 16:42:54 +05:30
committed by Arian
parent 7de395884a
commit 341ddf5768
2 changed files with 8 additions and 4 deletions
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2
gps/core/LocApiBase.cpp
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@@ -1171,7 +1171,7 @@ bool ElapsedRealtimeEstimator::getCurrentTime(
struct timespec sinceBootTime = {};
struct timespec sinceBootTimeTest = {};
bool clockGetTimeSuccess = false;
const uint32_t MAX_TIME_DELTA_VALUE_NANOS = 10000;
const uint32_t MAX_TIME_DELTA_VALUE_NANOS = 2000000; // 2 milli-seconds
const uint32_t MAX_GET_TIME_COUNT = 20;
/* Attempt to get CLOCK_REALTIME and CLOCK_BOOTIME in succession without an interruption
or context switch (for up to MAX_GET_TIME_COUNT times) to avoid errors in the calculation */

10
gps/gnss/GnssAdapter.cpp
View File

@@ -428,11 +428,15 @@ void GnssAdapter::fillElapsedRealTime(const GpsLocationExtended& locationExtende
else if (out.timestamp > 0) {
int64_t locationTimeNanos = (int64_t)out.timestamp * 1000000;
bool isCurDataTimeTrustable = (out.timestamp % mLocPositionMode.min_interval == 0);
out.flags |= LOCATION_HAS_ELAPSED_REAL_TIME_BIT;
out.elapsedRealTime = mPositionElapsedRealTimeCal.getElapsedRealtimeEstimateNanos(
int64_t elapsedRealTime = mPositionElapsedRealTimeCal.getElapsedRealtimeEstimateNanos(
locationTimeNanos, isCurDataTimeTrustable,
(int64_t)mLocPositionMode.min_interval * 1000000);
out.elapsedRealTimeUnc = mPositionElapsedRealTimeCal.getElapsedRealtimeUncNanos();
if (elapsedRealTime != -1) {
out.flags |= LOCATION_HAS_ELAPSED_REAL_TIME_BIT;
out.elapsedRealTime = elapsedRealTime;
out.elapsedRealTimeUnc = mPositionElapsedRealTimeCal.getElapsedRealtimeUncNanos();
}
}
#endif //FEATURE_AUTOMOTIVE
}