Add TSL2591 sensor support (#4014)

src/modules/Telemetry/Sensor/TSL2591Sensor.cpp

@@ -0,0 +1,38 @@
+#include "TSL2591Sensor.h"
+#include "../mesh/generated/meshtastic/telemetry.pb.h"
+#include "TelemetrySensor.h"
+#include "configuration.h"
+#include <Adafruit_TSL2591.h>
+#include <typeinfo>
+
+TSL2591Sensor::TSL2591Sensor() : TelemetrySensor(meshtastic_TelemetrySensorType_TSL25911FN, "TSL2591") {}
+
+int32_t TSL2591Sensor::runOnce()
+{
+    LOG_INFO("Init sensor: %s\n", sensorName);
+    if (!hasSensor()) {
+        return DEFAULT_SENSOR_MINIMUM_WAIT_TIME_BETWEEN_READS;
+    }
+    status = tsl.begin(nodeTelemetrySensorsMap[sensorType].second);
+
+    return initI2CSensor();
+}
+
+void TSL2591Sensor::setup()
+{
+    tsl.setGain(TSL2591_GAIN_MED); // 25x gain
+    tsl.setTiming(TSL2591_INTEGRATIONTIME_300MS);
+}
+
+bool TSL2591Sensor::getMetrics(meshtastic_Telemetry *measurement)
+{
+    uint32_t lum = tsl.getFullLuminosity();
+    uint16_t ir, full;
+    ir = lum >> 16;
+    full = lum & 0xFFFF;
+
+    measurement->variant.environment_metrics.lux = tsl.calculateLux(full, ir);
+    LOG_INFO("Lux: %f\n", measurement->variant.environment_metrics.lux);
+
+    return true;
+}

src/modules/Telemetry/Sensor/TSL2591Sensor.h

@@ -0,0 +1,17 @@
+#include "../mesh/generated/meshtastic/telemetry.pb.h"
+#include "TelemetrySensor.h"
+#include <Adafruit_TSL2591.h>
+
+class TSL2591Sensor : public TelemetrySensor
+{
+  private:
+    Adafruit_TSL2591 tsl;
+
+  protected:
+    virtual void setup() override;
+
+  public:
+    TSL2591Sensor();
+    virtual int32_t runOnce() override;
+    virtual bool getMetrics(meshtastic_Telemetry *measurement) override;
+};