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[link-metrics] add reverse linear scale for metrics in enh ack (#7035)

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This commit add missing reverse operations for linear scale RSSI and
link margin for enhance acknowledgments.
This commit is contained in:
Łukasz Maciejończyk
2021-09-28 08:16:30 -07:00
committed by GitHub
parent 54af1ee416
commit 312e8a630b
1 changed files with 4 additions and 2 deletions
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src/core/thread/link_metrics.cpp
+4 -2
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@@ -602,11 +602,13 @@ void LinkMetrics::ProcessEnhAckIeData(const uint8_t *aData, uint8_t aLength, con
} }
if (values.GetMetrics().mLinkMargin && idx < aLength) if (values.GetMetrics().mLinkMargin && idx < aLength)
{ {
values.mLinkMarginValue = aData[idx++]; // Reverse operation for linear scale, map from [0, 255] to [0, 130]
values.mLinkMarginValue = aData[idx++] * 130 / 255;
} }
if (values.GetMetrics().mRssi && idx < aLength) if (values.GetMetrics().mRssi && idx < aLength)
{ {
values.mRssiValue = aData[idx++]; // Reverse operation for linear scale, map from [0, 255] to [-130, 0]
values.mRssiValue = aData[idx++] * 130 / 255 - 130;
} }
mEnhAckProbingIeReportCallback(aNeighbor.GetRloc16(), &aNeighbor.GetExtAddress(), &values, mEnhAckProbingIeReportCallback(aNeighbor.GetRloc16(), &aNeighbor.GetExtAddress(), &values,