simulator: fix airspeed temperature

- HIL_SENSOR temperature is only being sent with barometer data

src/modules/simulator/simulator.h

@@ -169,6 +169,8 @@ private:
 	PX4Barometer		_px4_baro_0{6620172}; // 6620172: DRV_BARO_DEVTYPE_BAROSIM, BUS: 1, ADDR: 4, TYPE: SIMULATION
 	PX4Barometer		_px4_baro_1{6620428}; // 6620428: DRV_BARO_DEVTYPE_BAROSIM, BUS: 2, ADDR: 4, TYPE: SIMULATION
 
+	float _sensors_temperature{0};
+
 	perf_counter_t _perf_sim_delay{perf_alloc(PC_ELAPSED, MODULE_NAME": network delay")};
 	perf_counter_t _perf_sim_interval{perf_alloc(PC_INTERVAL, MODULE_NAME": network interval")};
 

src/modules/simulator/simulator_mavlink.cpp

@@ -224,6 +224,8 @@ void Simulator::update_sensors(const hrt_abstime &time, const mavlink_hil_sensor
 
 			_px4_mag_0.set_temperature(sensors.temperature);
 			_px4_mag_1.set_temperature(sensors.temperature);
+
+			_sensors_temperature = sensors.temperature;
 		}
 	}
 
@@ -274,7 +276,7 @@ void Simulator::update_sensors(const hrt_abstime &time, const mavlink_hil_sensor
 	if ((sensors.fields_updated & SensorSource::DIFF_PRESS) == SensorSource::DIFF_PRESS && !_airspeed_blocked) {
 		differential_pressure_s report{};
 		report.timestamp = time;
-		report.temperature = sensors.temperature;
+		report.temperature = _sensors_temperature;
 		report.differential_pressure_filtered_pa = sensors.diff_pressure * 100.0f; // convert from millibar to bar;
 		report.differential_pressure_raw_pa = sensors.diff_pressure * 100.0f; // convert from millibar to bar;