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* telemHasChanged() mod, so that only _specified_ min_delta values are considered.

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This commit is contained in:
Scott Powell
2026-09-12 16:53:45 +10:00
parent 8660d1c973
commit d69ae98b5a
1 changed files with 7 additions and 5 deletions
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examples/simple_sensor/SensorMesh.cpp
+7 -5
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@@ -81,7 +81,7 @@ static File openAppend(FILESYSTEM* _fs, const char* fname) {
/* --------------------- Cayenne LPP helpers ----------------------------*/ /* --------------------- Cayenne LPP helpers ----------------------------*/
static float findTelemValue(const uint8_t* buf, uint8_t size, uint8_t channel, uint8_t type) { static float findTelemValue(const uint8_t* buf, uint8_t size, uint8_t channel, uint8_t type, float def_value) {
uint8_t i = 0; uint8_t i = 0;
while (i + 2 < size) { while (i + 2 < size) {
@@ -96,7 +96,7 @@ static float findTelemValue(const uint8_t* buf, uint8_t size, uint8_t channel, u
} }
i += sz; // skip i += sz; // skip
} }
return 0.0f; // not found return def_value; // not found
} }
/* ------------------ end Cayenne LPP helpers ----------------------*/ /* ------------------ end Cayenne LPP helpers ----------------------*/
@@ -117,12 +117,14 @@ bool SensorMesh::telemHasChanged(const uint8_t* min_deltas, uint8_t min_deltas_l
float v = LPPData::getFloat(&buf[i], sz, LPPData::getMultiplier(t), LPPData::isSigned(t)); float v = LPPData::getFloat(&buf[i], sz, LPPData::getMultiplier(t), LPPData::isSigned(t));
float pv = LPPData::getFloat(&prev_telem[i], sz, LPPData::getMultiplier(t), LPPData::isSigned(t)); float pv = LPPData::getFloat(&prev_telem[i], sz, LPPData::getMultiplier(t), LPPData::isSigned(t));
float min_delta = findTelemValue(min_deltas, min_deltas_len, ch, t); float min_delta = min_deltas_len > 0
? findTelemValue(min_deltas, min_deltas_len, ch, t, 1.0e+16f) // default is just something BIG
: 0.0f; // for ANY change
if (abs(v - pv) > min_delta) return true; // Yes, has changed if (abs(v - pv) > min_delta) return true; // Yes, has changed
i += sz; // skip i += sz; // skip
} }
return false; // no changes return false; // no changes (OR none of the -specified- telemetry values changed by min_delta)
} }
uint8_t SensorMesh::handleRequest(ClientInfo* from, uint32_t sender_timestamp, uint8_t req_type, uint8_t* payload, size_t payload_len) { uint8_t SensorMesh::handleRequest(ClientInfo* from, uint32_t sender_timestamp, uint8_t req_type, uint8_t* payload, size_t payload_len) {
@@ -961,7 +963,7 @@ void SensorMesh::formatPacketStatsReply(char *reply) {
} }
float SensorMesh::getTelemValue(uint8_t channel, uint8_t type) { float SensorMesh::getTelemValue(uint8_t channel, uint8_t type) {
return findTelemValue(telemetry.getBuffer(), telemetry.getSize(), channel, type); return findTelemValue(telemetry.getBuffer(), telemetry.getSize(), channel, type, 0.0f);
} }
bool SensorMesh::getGPS(uint8_t channel, float& lat, float& lon, float& alt) { bool SensorMesh::getGPS(uint8_t channel, float& lat, float& lon, float& alt) {