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55 lines
1.5 KiB
C++
55 lines
1.5 KiB
C++
#include "configuration.h"
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#if !MESHTASTIC_EXCLUDE_ENVIRONMENTAL_SENSOR && __has_include(<BH1750_WE.h>)
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#include "../mesh/generated/meshtastic/telemetry.pb.h"
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#include "BH1750Sensor.h"
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#include "TelemetrySensor.h"
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#include <BH1750_WE.h>
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#ifndef BH1750_SENSOR_MODE
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#define BH1750_SENSOR_MODE BH1750Mode::CHM
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#endif
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BH1750Sensor::BH1750Sensor() : TelemetrySensor(meshtastic_TelemetrySensorType_BH1750, "BH1750") {}
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bool BH1750Sensor::initDevice(TwoWire *bus, ScanI2C::FoundDevice *dev)
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{
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LOG_INFO("Init sensor: %s with mode %d", sensorName, BH1750_SENSOR_MODE);
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bh1750 = BH1750_WE(bus, dev->address.address);
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status = bh1750.init();
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if (!status) {
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return status;
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}
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bh1750.setMode(BH1750_SENSOR_MODE);
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initI2CSensor();
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return status;
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}
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bool BH1750Sensor::getMetrics(meshtastic_Telemetry *measurement)
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{
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/* An OTH and OTH_2 measurement takes ~120 ms. I suggest to wait
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140 ms to be on the safe side.
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An OTL measurement takes about 16 ms. I suggest to wait 20 ms
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to be on the safe side. */
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if (BH1750_SENSOR_MODE == BH1750Mode::OTH || BH1750_SENSOR_MODE == BH1750Mode::OTH_2) {
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bh1750.setMode(BH1750_SENSOR_MODE);
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delay(140); // wait for measurement to be completed
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} else if (BH1750_SENSOR_MODE == BH1750Mode::OTL) {
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bh1750.setMode(BH1750_SENSOR_MODE);
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delay(20);
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}
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measurement->variant.environment_metrics.has_lux = true;
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float lightIntensity = bh1750.getLux();
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measurement->variant.environment_metrics.lux = lightIntensity;
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return true;
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}
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#endif
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