simulator: fix conversion from hPa to Pa

Signed-off-by: RomanBapst <bapstroman@gmail.com>

src/modules/simulator/simulator.h

@@ -161,6 +161,8 @@ private:
 
 	static Simulator *_instance;
 
+	static constexpr float hPa2Pa = 100.0f; // hectopascal to pascal multiplier
+
 	// simulated sensor instances
 	static constexpr uint8_t ACCEL_COUNT_MAX = 3;
 	PX4Accelerometer _px4_accel[ACCEL_COUNT_MAX] {

src/modules/simulator/simulator_mavlink.cpp

@@ -328,7 +328,7 @@ void Simulator::update_sensors(const hrt_abstime &time, const mavlink_hil_sensor
 	if ((sensors.fields_updated & SensorSource::BARO) == SensorSource::BARO && !_baro_blocked) {
 
 		if (!_baro_stuck) {
-			_last_baro_pressure = sensors.abs_pressure;
+			_last_baro_pressure = sensors.abs_pressure * hPa2Pa; // convert hPa to Pa
 			_last_baro_temperature = sensors.temperature;
 		}
 
@@ -354,8 +354,8 @@ void Simulator::update_sensors(const hrt_abstime &time, const mavlink_hil_sensor
 		differential_pressure_s report{};
 		report.timestamp = time;
 		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;
+		report.differential_pressure_filtered_pa = sensors.diff_pressure * hPa2Pa; // convert hPa to Pa;
+		report.differential_pressure_raw_pa = sensors.diff_pressure * hPa2Pa; // convert hPa to Pa;
 
 		_differential_pressure_pub.publish(report);
 	}