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Domingo 2025-05-23 14:36:38 +02:00 committed by Domingo
parent 270172a131
commit c0bb68028c
1 changed files with 18 additions and 13 deletions
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23
src/modules/Telemetry/Sensor/LTR390UVSensor.cpp
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@ -19,8 +19,8 @@ int32_t LTR390UVSensor::runOnce()
status = ltr390uv.begin(nodeTelemetrySensorsMap[sensorType].second); status = ltr390uv.begin(nodeTelemetrySensorsMap[sensorType].second);
ltr390uv.setMode(LTR390_MODE_UVS); ltr390uv.setMode(LTR390_MODE_UVS);
ltr390uv.setGain(LTR390_GAIN_18); // Datasheet default ltr390uv.setGain(LTR390_GAIN_18); // Datasheet default
ltr390uv.setResolution(LTR390_RESOLUTION_20BIT); // Datasheet default ltr390uv.setResolution(LTR390_RESOLUTION_20BIT); // Datasheet default
return initI2CSensor(); return initI2CSensor();
} }
@ -37,27 +37,32 @@ bool LTR390UVSensor::getMetrics(meshtastic_Telemetry *measurement)
// Because the sensor does not measure Lux and UV at the same time, we need to read them in two passes. // Because the sensor does not measure Lux and UV at the same time, we need to read them in two passes.
if (ltr390uv.newDataAvailable()) { if (ltr390uv.newDataAvailable()) {
if (ltr390uv.getMode() == LTR390_MODE_ALS) { if (ltr390uv.getMode() == LTR390_MODE_ALS) {
lastLuxReading = 0.6 * ltr390uv.readALS() / (1 * 4); // Datasheet page 23 for gain x1 and 20bit resolution lastLuxReading = 0.6 * ltr390uv.readALS() / (1 * 4); // Datasheet page 23 for gain x1 and 20bit resolution
LOG_DEBUG("LTR390UV Lux reading: %f", lastLuxReading); LOG_DEBUG("LTR390UV Lux reading: %f", lastLuxReading);
measurement->variant.environment_metrics.lux = lastLuxReading; measurement->variant.environment_metrics.lux = lastLuxReading;
measurement->variant.environment_metrics.uv_lux = lastUVReading; measurement->variant.environment_metrics.uv_lux = lastUVReading;
ltr390uv.setGain(LTR390_GAIN_18); //Recommended for UVI - x18. Do not change, 2300 UV Sensitivity only specified for x18 gain ltr390uv.setGain(
ltr390uv.setResolution(LTR390_RESOLUTION_20BIT); //Recommended for UVI - 20-bit. Do not change, 2300 UV Sensitivity only specified for 20-bit res LTR390_GAIN_18); // Recommended for UVI - x18. Do not change, 2300 UV Sensitivity only specified for x18 gain
ltr390uv.setResolution(LTR390_RESOLUTION_20BIT); // Recommended for UVI - 20-bit. Do not change, 2300 UV Sensitivity
// only specified for 20-bit res
ltr390uv.setMode(LTR390_MODE_UVS); ltr390uv.setMode(LTR390_MODE_UVS);
} else if (ltr390uv.getMode() == LTR390_MODE_UVS) { } else if (ltr390uv.getMode() == LTR390_MODE_UVS) {
lastUVReading = ltr390uv.readUVS() / 2300.f; // Datasheet page 23 and page 6, only characterisation for gain x18 and 20bit resolution lastUVReading = ltr390uv.readUVS() /
2300.f; // Datasheet page 23 and page 6, only characterisation for gain x18 and 20bit resolution
LOG_DEBUG("LTR390UV UV reading: %f", lastUVReading); LOG_DEBUG("LTR390UV UV reading: %f", lastUVReading);
measurement->variant.environment_metrics.lux = lastLuxReading; measurement->variant.environment_metrics.lux = lastLuxReading;
measurement->variant.environment_metrics.uv_lux = lastUVReading; measurement->variant.environment_metrics.uv_lux = lastUVReading;
ltr390uv.setGain(LTR390_GAIN_1); // x1 gain will already max out the sensor at direct sunlight, so no need to increase it ltr390uv.setGain(
ltr390uv.setResolution(LTR390_RESOLUTION_20BIT); // There is plenty of time between telemetry calls for a full 20bit conversion LTR390_GAIN_1); // x1 gain will already max out the sensor at direct sunlight, so no need to increase it
ltr390uv.setResolution(
LTR390_RESOLUTION_20BIT); // There is plenty of time between telemetry calls for a full 20bit conversion
ltr390uv.setMode(LTR390_MODE_ALS); ltr390uv.setMode(LTR390_MODE_ALS);
}
} }
}
return true; return true;
} }