From 7fd06ee913375f6cdc338be0b783fe7f811f54b6 Mon Sep 17 00:00:00 2001
From: Lorenz Meier <lorenz@px4.io>
Date: Sun, 15 Jan 2017 01:31:14 +0100
Subject: [PATCH] MAVLLink simulator interface: Simulate minimum airspeed noise

---
 src/modules/simulator/simulator_mavlink.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/modules/simulator/simulator_mavlink.cpp b/src/modules/simulator/simulator_mavlink.cpp
index 2f67db17c4..3863f21a6c 100644
--- a/src/modules/simulator/simulator_mavlink.cpp
+++ b/src/modules/simulator/simulator_mavlink.cpp
@@ -253,7 +253,7 @@ void Simulator::update_sensors(mavlink_hil_sensor_t *imu)
 
 	RawAirspeedData airspeed = {};
 	airspeed.temperature = imu->temperature;
-	airspeed.diff_pressure = imu->diff_pressure;
+	airspeed.diff_pressure = imu->diff_pressure + 0.001f * (hrt_absolute_time() & 0x01);;
 
 	write_airspeed_data(&airspeed);
 }