public void update(ref double[] servos, ArdupilotMega.GCSViews.Simulation.FGNetFDM fdm)
{
for (int i = 0; i < servos.Length; i++)
{
if (servos[i] <= 0.0)
{
motor_speed[i] = 0;
}
else
{
motor_speed[i] = scale_rc(i, (float)servos[i], 0.0f, 1.0f);
//servos[i] = motor_speed[i];
}
}
double[] m = motor_speed;
/*
* roll = 0;
* pitch = 0;
* yaw = 0;
* roll_rate = 0;
* pitch_rate = 0;
* yaw_rate = 0;
*/
// Console.WriteLine("\nin m {0:0.000000} {1:0.000000} {2:0.000000} {3:0.000000}", m[0], m[1], m[2], m[3]);
// Console.WriteLine("in vel {0:0.000000} {1:0.000000} {2:0.000000}", velocity.X, velocity.Y, velocity.Z);
//Console.WriteLine("in r {0:0.000000} p {1:0.000000} y {2:0.000000} - r {3:0.000000} p {4:0.000000} y {5:0.000000}", roll, pitch, yaw, roll_rate, pitch_rate, yaw_rate);
// m[0] *= 0.5;
//# how much time has passed?
DateTime t = DateTime.Now;
TimeSpan delta_time = t - last_time; // 0.02
last_time = t;
if (delta_time.TotalMilliseconds > 100) // somethings wrong / debug
{
delta_time = new TimeSpan(0, 0, 0, 0, 20);
}
// rotational acceleration, in degrees/s/s, in body frame
double roll_accel = 0.0;
double pitch_accel = 0.0;
double yaw_accel = 0.0;
double thrust = 0.0;
foreach (var i in range((self.motors.Length)))
{
roll_accel += -5000.0 * sin(radians(self.motors[i].angle)) * m[i];
pitch_accel += 5000.0 * cos(radians(self.motors[i].angle)) * m[i];
if (self.motors[i].clockwise)
{
yaw_accel -= m[i] * 400.0;
}
else
{
yaw_accel += m[i] * 400.0;
}
thrust += m[i] * self.thrust_scale; // newtons
}
// rotational resistance
roll_accel -= (self.pDeg / self.terminal_rotation_rate) * 5000.0;
pitch_accel -= (self.qDeg / self.terminal_rotation_rate) * 5000.0;
yaw_accel -= (self.rDeg / self.terminal_rotation_rate) * 400.0;
//Console.WriteLine("roll {0} {1} {2}", roll_accel, roll_rate, roll);
//# update rotational rates in body frame
self.pDeg += roll_accel * delta_time.TotalSeconds;
self.qDeg += pitch_accel * delta_time.TotalSeconds;
self.rDeg += yaw_accel * delta_time.TotalSeconds;
// Console.WriteLine("roll {0} {1} {2}", roll_accel, roll_rate, roll);
// calculate rates in earth frame
var answer = BodyRatesToEarthRates(self.roll, self.pitch, self.yaw,
self.pDeg, self.qDeg, self.rDeg);
self.roll_rate = answer.Item1;
self.pitch_rate = answer.Item2;
self.yaw_rate = answer.Item3;
//self.roll_rate = pDeg;
//self.pitch_rate = qDeg;
//self.yaw_rate = rDeg;
//# update rotation
roll += roll_rate * delta_time.TotalSeconds;
pitch += pitch_rate * delta_time.TotalSeconds;
yaw += yaw_rate * delta_time.TotalSeconds;
// Console.WriteLine("roll {0} {1} {2}", roll_accel, roll_rate, roll);
//Console.WriteLine("r {0:0.0} p {1:0.0} y {2:0.0} - r {3:0.0} p {4:0.0} y {5:0.0} ms {6:0.000}", roll, pitch, yaw, roll_rate, pitch_rate, yaw_rate, delta_time.TotalSeconds);
//# air resistance
Vector3d air_resistance = -velocity * (gravity / terminal_velocity);
//# normalise rotations
normalise();
double accel = thrust / mass;
//Console.WriteLine("in {0:0.000000} {1:0.000000} {2:0.000000} {3:0.000000}", roll, pitch, yaw, accel);
Vector3d accel3D = RPY_to_XYZ(roll, pitch, yaw, accel);
//Console.WriteLine("accel3D " + accel3D.X + " " + accel3D.Y + " " + accel3D.Z);
accel3D += new Vector3d(0, 0, -gravity);
accel3D += air_resistance;
Random rand = new Random();
//velocity.X += .02 + rand.NextDouble() * .03;
//velocity.Y += .02 + rand.NextDouble() * .03;
//# new velocity vector
velocity += accel3D * delta_time.TotalSeconds;
this.accel = accel3D;
//# new position vector
old_position = new Vector3d(position);
position += velocity * delta_time.TotalSeconds;
// Console.WriteLine(fdm.agl + " "+ fdm.altitude);
//Console.WriteLine("Z {0} halt {1} < gl {2} fh {3}" ,position.Z , home_altitude , ground_level , frame_height);
if (home_latitude == 0 || home_latitude > 90 || home_latitude < -90 || home_longitude == 0)
{
this.home_latitude = fdm.latitude * rad2deg;
this.home_longitude = fdm.longitude * rad2deg;
this.home_altitude = fdm.altitude * ft2m;
this.ground_level = this.home_altitude;
this.altitude = fdm.altitude * ft2m;
this.latitude = fdm.latitude * rad2deg;
this.longitude = fdm.longitude * rad2deg;
}
//# constrain height to the ground
if (position.Z + home_altitude < ground_level + frame_height)
{
if (old_position.Z + home_altitude > ground_level + frame_height)
{
// Console.WriteLine("Hit ground at {0} m/s", (-velocity.Z));
}
velocity = new Vector3d(0, 0, 0);
roll_rate = 0;
pitch_rate = 0;
yaw_rate = 0;
roll = 0;
pitch = 0;
position = new Vector3d(position.X, position.Y,
ground_level + frame_height - home_altitude + 0);
// Console.WriteLine("here " + position.Z);
}
//# update lat/lon/altitude
update_position();
// send to apm
#if MAVLINK10
ArdupilotMega.MAVLink.mavlink_gps_raw_int_t gps = new ArdupilotMega.MAVLink.mavlink_gps_raw_int_t();
#else
ArdupilotMega.MAVLink.mavlink_gps_raw_t gps = new ArdupilotMega.MAVLink.mavlink_gps_raw_t();
#endif
ArdupilotMega.MAVLink.mavlink_attitude_t att = new ArdupilotMega.MAVLink.mavlink_attitude_t();
ArdupilotMega.MAVLink.mavlink_vfr_hud_t asp = new ArdupilotMega.MAVLink.mavlink_vfr_hud_t();
att.roll = (float)roll * deg2rad;
att.pitch = (float)pitch * deg2rad;
att.yaw = (float)yaw * deg2rad;
att.rollspeed = (float)roll_rate * deg2rad;
att.pitchspeed = (float)pitch_rate * deg2rad;
att.yawspeed = (float)yaw_rate * deg2rad;
#if MAVLINK10
gps.alt = ((int)(altitude * 1000));
gps.fix_type = 3;
gps.vel = (ushort)(Math.Sqrt((velocity.X * velocity.X) + (velocity.Y * velocity.Y)) * 100);
gps.cog = (ushort)((((Math.Atan2(velocity.Y, velocity.X) * rad2deg) + 360) % 360) * 100);
gps.lat = (int)(latitude * 1.0e7);
gps.lon = (int)(longitude * 1.0e7);
gps.time_usec = ((ulong)DateTime.Now.Ticks);
asp.airspeed = gps.vel;
#else
gps.alt = ((float)(altitude));
gps.fix_type = 3;
gps.lat = ((float)latitude);
gps.lon = ((float)longitude);
gps.usec = ((ulong)DateTime.Now.Ticks);
//Random rand = new Random();
//gps.alt += (rand.Next(100) - 50) / 100.0f;
//gps.lat += (float)((rand.NextDouble() - 0.5) * 0.00005);
//gps.lon += (float)((rand.NextDouble() - 0.5) * 0.00005);
//gps.v += (float)(rand.NextDouble() - 0.5) * 1.0f;
gps.v = ((float)Math.Sqrt((velocity.X * velocity.X) + (velocity.Y * velocity.Y)));
gps.hdg = (float)(((Math.Atan2(velocity.Y, velocity.X) * rad2deg) + 360) % 360);;
asp.airspeed = gps.v;
#endif
MainV2.comPort.sendPacket(att);
MAVLink.mavlink_raw_pressure_t pres = new MAVLink.mavlink_raw_pressure_t();
double calc = (101325 * Math.Pow(1 - 2.25577 * Math.Pow(10, -5) * gps.alt, 5.25588));
pres.press_diff1 = (short)(int)(calc); // 0 alt is 0 pa
MainV2.comPort.sendPacket(pres);
MainV2.comPort.sendPacket(asp);
if (framecount % 120 == 0)
{// 50 / 10 = 5 hz
MainV2.comPort.sendPacket(gps);
//Console.WriteLine(DateTime.Now.Millisecond + " GPS" );
}
framecount++;
}
/// <summary>
/// Recevied UDP packet, process and send required data to serial port.
/// </summary>
/// <param name="data">Packet</param>
/// <param name="receviedbytes">Length</param>
/// <param name="comPort">Com Port</param>
private void RECVprocess(byte[] data, int receviedbytes, MAVLinkInterface comPort)
{
sitl_fdm sitldata = new sitl_fdm();
if (data[0] == 'D' && data[1] == 'A')
{
// Xplanes sends
// 5 byte header
// 1 int for the index - numbers on left of output
// 8 floats - might be useful. or 0 if not
int count = 5;
while (count < receviedbytes)
{
int index = BitConverter.ToInt32(data, count);
DATA[index] = new float[8];
DATA[index][0] = BitConverter.ToSingle(data, count + 1 * 4); ;
DATA[index][1] = BitConverter.ToSingle(data, count + 2 * 4); ;
DATA[index][2] = BitConverter.ToSingle(data, count + 3 * 4); ;
DATA[index][3] = BitConverter.ToSingle(data, count + 4 * 4); ;
DATA[index][4] = BitConverter.ToSingle(data, count + 5 * 4); ;
DATA[index][5] = BitConverter.ToSingle(data, count + 6 * 4); ;
DATA[index][6] = BitConverter.ToSingle(data, count + 7 * 4); ;
DATA[index][7] = BitConverter.ToSingle(data, count + 8 * 4); ;
count += 36; // 8 * float
}
bool xplane9 = !CHK_xplane10.Checked;
if (xplane9)
{
sitldata.pitchDeg = (DATA[18][0]);
sitldata.rollDeg = (DATA[18][1]);
sitldata.yawDeg = (DATA[18][2]);
sitldata.pitchRate = (DATA[17][0] * rad2deg);
sitldata.rollRate = (DATA[17][1] * rad2deg);
sitldata.yawRate = (DATA[17][2] * rad2deg);
sitldata.heading = ((float)DATA[19][2]);
sitldata.speedN =-DATA[21][5];// (DATA[3][7] * 0.44704 * Math.Sin(sitldata.heading * deg2rad));
sitldata.speedE = DATA[21][3];// (DATA[3][7] * 0.44704 * Math.Cos(sitldata.heading * deg2rad));
sitldata.speedD = -DATA[21][4];
}
else
{
sitldata.pitchDeg = (DATA[17][0]);
sitldata.rollDeg = (DATA[17][1]);
sitldata.yawDeg = (DATA[17][2]);
sitldata.pitchRate = (DATA[16][0] * rad2deg);
sitldata.rollRate = (DATA[16][1] * rad2deg);
sitldata.yawRate = (DATA[16][2] * rad2deg);
sitldata.heading = (DATA[18][2]); // 18-2
sitldata.speedN = -DATA[21][5];// (DATA[3][7] * 0.44704 * Math.Sin(sitldata.heading * deg2rad));
sitldata.speedE = DATA[21][3];// (DATA[3][7] * 0.44704 * Math.Cos(sitldata.heading * deg2rad));
sitldata.speedD = -DATA[21][4];
}
sitldata.airspeed = ((DATA[3][5] * .44704));
sitldata.latitude = (DATA[20][0]);
sitldata.longitude = (DATA[20][1]);
sitldata.altitude = (DATA[20][2] * ft2m);
Matrix3 dcm = new Matrix3();
dcm.from_euler(sitldata.rollDeg * deg2rad, sitldata.pitchDeg * deg2rad, sitldata.heading * deg2rad);
// rad = tas^2 / (tan(angle) * G)
float turnrad = (float)(((DATA[3][7] * 0.44704) * (DATA[3][7] * 0.44704)) / (float)(9.808f * Math.Tan(sitldata.rollDeg * deg2rad)));
float gload = (float)(1 / Math.Cos(sitldata.rollDeg * deg2rad)); // calculated Gs
// a = v^2/r
float centripaccel = (float)((DATA[3][7] * 0.44704) * (DATA[3][7] * 0.44704)) / turnrad;
Vector3 accel_body = dcm.transposed() * (new Vector3(0, 0, -9.808));
Vector3 centrip_accel = new Vector3(0, centripaccel * Math.Cos(sitldata.rollDeg * deg2rad), centripaccel * Math.Sin(sitldata.rollDeg * deg2rad));
// accel_body += centrip_accel;
Vector3 velocitydelta = dcm.transposed() * (new Vector3((sitldata_old.speedN - sitldata.speedN), (sitldata_old.speedE - sitldata.speedE), (sitldata_old.speedD - sitldata.speedD)));
Vector3 velocity = dcm.transposed() * (new Vector3((sitldata.speedN), (sitldata.speedE), (sitldata.speedD)));
//Console.WriteLine("vel " + velocity.ToString());
//Console.WriteLine("ved " + velocitydelta.ToString());
// a = dv / dt
// 50 hz = 0.02sec
Vector3 accel_mine_body = dcm.transposed() * (new Vector3((sitldata_old.speedN - sitldata.speedN) / 0.02, (sitldata_old.speedE - sitldata.speedE) / 0.02, (sitldata_old.speedD - sitldata.speedD) / 0.02));
// Console.WriteLine("G"+accel_body.ToString());
//Console.WriteLine("M"+accel_mine_body.ToString());
// sitldata.pitchRate = 0;
// sitldata.rollRate = 0;
// sitldata.yawRate = 0;
//accel_mine_body.x =0;// *= -1;
//accel_mine_body.y =0;//*= -1;
// accel_body -= accel_mine_body;
sitldata.xAccel = accel_body.x;// DATA[4][5] * 1;
sitldata.yAccel = accel_body.y;// DATA[4][6] * 1;
sitldata.zAccel = accel_body.z;// (0 - DATA[4][4]) * 9.808;
sitldata.xAccel = DATA[4][5] *9.808;
sitldata.yAccel = DATA[4][6] *9.808;
sitldata.zAccel = -DATA[4][4] *9.808;
// Console.WriteLine(accel_body.ToString());
// Console.WriteLine(" {0} {1} {2}",sitldata.xAccel, sitldata.yAccel, sitldata.zAccel);
}
else if (receviedbytes == 0x64) // FG binary udp
{
//FlightGear
/*
fgIMUData imudata2 = data.ByteArrayToStructureBigEndian<fgIMUData>(0);
if (imudata2.magic != 0x4c56414d)
return;
if (imudata2.latitude == 0)
return;
chkSensor.Checked = true;
imu.time_usec = ((ulong)DateTime.Now.ToBinary());
imu.xacc = ((Int16)(imudata2.accelX * 9808 / 32.2));
imu.xgyro = ((Int16)(imudata2.rateRoll * 17.453293));
imu.xmag = 0;
imu.yacc = ((Int16)(imudata2.accelY * 9808 / 32.2));
imu.ygyro = ((Int16)(imudata2.ratePitch * 17.453293));
imu.ymag = 0;
imu.zacc = ((Int16)(imudata2.accelZ * 9808 / 32.2)); // + 1000
imu.zgyro = ((Int16)(imudata2.rateYaw * 17.453293));
imu.zmag = 0;
gps.alt = ((int)(imudata2.altitude * ft2m * 1000));
gps.fix_type = 3;
gps.cog = (ushort)(Math.Atan2(imudata2.velocityE, imudata2.velocityN) * rad2deg * 100);
gps.lat = (int)(imudata2.latitude * 1.0e7);
gps.lon = (int)(imudata2.longitude * 1.0e7);
gps.time_usec = ((ulong)DateTime.Now.Ticks);
gps.vel = (ushort)(Math.Sqrt((imudata2.velocityN * imudata2.velocityN) + (imudata2.velocityE * imudata2.velocityE)) * ft2m * 100);
//FileStream stream = File.OpenWrite("fgdata.txt");
//stream.Write(data, 0, receviedbytes);
//stream.Close();
*/
}
else if (receviedbytes == 662 || receviedbytes == 658) // 658 = 3.83 662 = 3.91
{
/*
// Model data in body frame coordinates (X=Right, Y=Front, Z=Up)
public float Model_fVel_Body_X; public float Model_fVel_Body_Y; public float Model_fVel_Body_Z; // m/s Model velocity in body coordinates
public float Model_fAngVel_Body_X; public float Model_fAngVel_Body_Y; public float Model_fAngVel_Body_Z; // rad/s Model angular velocity in body coordinates
public float Model_fAccel_Body_X; public float Model_fAccel_Body_Y; public float Model_fAccel_Body_Z; // m/s/s Model acceleration in body coordinates
*/
TDataFromAeroSimRC aeroin_last = aeroin;
aeroin = data.ByteArrayToStructure<TDataFromAeroSimRC>(0);
sitldata.pitchDeg = (aeroin.Model_fPitch * rad2deg);
sitldata.rollDeg = (aeroin.Model_fRoll * -1 * rad2deg);
sitldata.yawDeg = ((aeroin.Model_fHeading * rad2deg));
sitldata.pitchRate =aeroin.Model_fAngVel_Body_X * rad2deg;
sitldata.rollRate = aeroin.Model_fAngVel_Body_Y * rad2deg;
sitldata.yawRate = -aeroin.Model_fAngVel_Body_Z * rad2deg;
// calc gravity
Matrix3 dcm = new Matrix3();
dcm.from_euler(sitldata.rollDeg * deg2rad, sitldata.pitchDeg * deg2rad, sitldata.yawDeg * deg2rad);
Vector3 accel_body = dcm.transposed() * (new Vector3(0, 0, -9.8)); // -9.8
sitldata.xAccel = aeroin.Model_fAccel_Body_Y / 9.808 + accel_body.x;// pitch - back forward-
sitldata.yAccel = aeroin.Model_fAccel_Body_X / 9.808 + accel_body.y; // roll - left right-
sitldata.zAccel = -aeroin.Model_fAccel_Body_Z /9.808 + accel_body.z;
// Console.WriteLine("2 {0,20} {1,20} {2,20}", aeroin.Model_fAccel_Body_X.ToString("0.000"), aeroin.Model_fAccel_Body_Y.ToString("0.000"), aeroin.Model_fAccel_Body_Z.ToString("0.000"));
sitldata.altitude = aeroin.Model_fPosZ;
sitldata.latitude = aeroin.Model_fLatitude;
sitldata.longitude = aeroin.Model_fLongitude;
sitldata.speedN = aeroin.Model_fVelY;
sitldata.speedE = aeroin.Model_fVelX;
sitldata.speedD = aeroin.Model_fVelZ;
float xvec = aeroin.Model_fVelY - aeroin.Model_fWindVelY;
float yvec = aeroin.Model_fVelX - aeroin.Model_fWindVelX;
sitldata.airspeed = ((float)Math.Sqrt((yvec * yvec) + (xvec * xvec)));
}
else if (receviedbytes == 408)
{
FGNetFDM fdm = data.ByteArrayToStructureBigEndian<FGNetFDM>(0);
lastfdmdata = fdm;
sitldata.altitude = (fdm.altitude);
sitldata.latitude = (fdm.latitude * rad2deg);
sitldata.longitude = (fdm.longitude * rad2deg);
sitldata.rollDeg = fdm.phi * rad2deg;
sitldata.pitchDeg = fdm.theta * rad2deg;
sitldata.yawDeg = fdm.psi * rad2deg;
sitldata.rollRate = fdm.phidot * rad2deg;
sitldata.pitchRate = fdm.thetadot * rad2deg;
sitldata.yawRate = fdm.psidot * rad2deg;
sitldata.speedN = fdm.v_north * ft2m;
sitldata.speedE = fdm.v_east * ft2m;
sitldata.speedD = fdm.v_down * ft2m;
sitldata.xAccel = (fdm.A_X_pilot * 9.808 / 32.2); // pitch
sitldata.yAccel = (fdm.A_Y_pilot * 9.808 / 32.2); // roll
sitldata.zAccel = (fdm.A_Z_pilot / 32.2 * 9.808);
sitldata.airspeed = fdm.vcas * 0.5144444f;// knots to m/s
// Console.WriteLine("1 {0} {1} {2} {3}",(float)sitldata.rollDeg,MainV2.comPort.MAV.cs.roll,sitldata.pitchDeg,MainV2.comPort.MAV.cs.pitch);
if (RAD_JSBSim.Checked)
sitldata.airspeed = fdm.vcas * ft2m;// fps to m/s
}
else
{
log.Info("Bad Udp Packet " + receviedbytes);
return;
}
if (sitldata.altitude < 0)
sitldata.altitude = 0.00001;
sitldata_old = sitldata;
// write arduimu to ardupilot
if (CHK_quad.Checked && !RAD_aerosimrc.Checked) // quad does its own
{
return;
}
if (RAD_JSBSim.Checked && chkSITL.Checked)
{
byte[] buffer = new byte[1500];
while (JSBSimSEND.Client.Available > 5)
{
int read = JSBSimSEND.Client.Receive(buffer);
// Console.WriteLine(ASCIIEncoding.ASCII.GetString(buffer,0,read));
}
sitldata.magic = (int)0x4c56414f;
byte[] sendme = StructureToByteArray(sitldata);
SITLSEND.Send(sendme, sendme.Length);
return;
}
if (chkSITL.Checked)
{
sitldata.magic = (int)0x4c56414f;
byte[] sendme = StructureToByteArray(sitldata);
SITLSEND.Send(sendme, sendme.Length);
return;
}
TimeSpan gpsspan = DateTime.Now - lastgpsupdate;
// add gps delay
if (gpsspan.TotalMilliseconds >= GPS_rate)
{
lastgpsupdate = DateTime.Now;
// save current fix = 3
sitl_fdmbuffer[gpsbufferindex % sitl_fdmbuffer.Length] = sitldata;
// Console.WriteLine((gpsbufferindex % gpsbuffer.Length) + " " + ((gpsbufferindex + (gpsbuffer.Length - 1)) % gpsbuffer.Length));
// return buffer index + 5 = (3 + 5) = 8 % 6 = 2
oldgps = sitl_fdmbuffer[(gpsbufferindex + (sitl_fdmbuffer.Length - 1)) % sitl_fdmbuffer.Length];
//comPort.sendPacket(oldgps);
gpsbufferindex++;
}
MAVLink.mavlink_hil_state_t hilstate = new MAVLink.mavlink_hil_state_t();
DateTime epochBegin = new DateTime(1980, 1, 6, 0, 0, 0, DateTimeKind.Utc);
hilstate.time_usec = (UInt64)((DateTime.Now.Ticks - epochBegin.Ticks) / 10); // microsec
hilstate.lat = (int)(oldgps.latitude * 1e7); // * 1E7
hilstate.lon = (int)(oldgps.longitude * 1e7); // * 1E7
hilstate.alt = (int)(oldgps.altitude * 1000); // mm
// Console.WriteLine(hilstate.alt);
// Console.WriteLine("{0} {1} {2}", sitldata.rollDeg.ToString("0.0"), sitldata.pitchDeg.ToString("0.0"), sitldata.yawDeg.ToString("0.0"));
hilstate.pitch = (float)sitldata.pitchDeg * deg2rad; // (rad)
hilstate.pitchspeed = (float)sitldata.pitchRate * deg2rad; // (rad/s)
hilstate.roll = (float)sitldata.rollDeg * deg2rad; // (rad)
hilstate.rollspeed = (float)sitldata.rollRate * deg2rad; // (rad/s)
hilstate.yaw = (float)sitldata.yawDeg * deg2rad; // (rad)
hilstate.yawspeed = (float)sitldata.yawRate * deg2rad; // (rad/s)
hilstate.vx = (short)(sitldata.speedN * 100); // m/s * 100 - lat
hilstate.vy = (short)(sitldata.speedE * 100); // m/s * 100 - long
hilstate.vz = (short)(sitldata.speedD * 100); // m/s * 100 - + speed down
hilstate.xacc = (short)(sitldata.xAccel * 101.957); // (mg)
hilstate.yacc = (short)(sitldata.yAccel * 101.957); // (mg)
hilstate.zacc = (short)(sitldata.zAccel * 101.957); // (mg)
packetcount++;
if (!comPort.BaseStream.IsOpen)
return;
if (comPort.BaseStream.BytesToWrite > 100)
return;
// if (packetcount % 2 == 0)
// return;
comPort.sendPacket(hilstate);
// comPort.sendPacket(oldgps);
//comPort.sendPacket(new MAVLink.mavlink_vfr_hud_t() { airspeed = (float)sitldata.airspeed } );
MAVLink.mavlink_raw_pressure_t pres = new MAVLink.mavlink_raw_pressure_t();
double calc = (101325 * Math.Pow(1 - 2.25577 * Math.Pow(10, -5) * sitldata.altitude, 5.25588)); // updated from valid gps
pres.press_diff1 = (short)(int)(calc - 101325); // 0 alt is 0 pa
// comPort.sendPacket(pres);
}
public void update(ref double[] servos, ArdupilotMega.GCSViews.Simulation.FGNetFDM fdm)
{
for (int i = 0; i < servos.Length; i++)
{
if (servos[i] <= 0.0)
{
motor_speed[i] = 0;
}
else
{
motor_speed[i] = scale_rc(i, (float)servos[i], 0.0f, 1.0f);
//servos[i] = motor_speed[i];
}
}
double[] m = motor_speed;
/*
roll = 0;
pitch = 0;
yaw = 0;
roll_rate = 0;
pitch_rate = 0;
yaw_rate = 0;
*/
// Console.WriteLine("\nin m {0:0.000000} {1:0.000000} {2:0.000000} {3:0.000000}", m[0], m[1], m[2], m[3]);
// Console.WriteLine("in vel {0:0.000000} {1:0.000000} {2:0.000000}", velocity.X, velocity.Y, velocity.Z);
//Console.WriteLine("in r {0:0.000000} p {1:0.000000} y {2:0.000000} - r {3:0.000000} p {4:0.000000} y {5:0.000000}", roll, pitch, yaw, roll_rate, pitch_rate, yaw_rate);
// m[0] *= 0.5;
//# how much time has passed?
DateTime t = DateTime.Now;
TimeSpan delta_time = t - last_time; // 0.02
last_time = t;
if (delta_time.TotalMilliseconds > 100) // somethings wrong / debug
{
delta_time = new TimeSpan(0, 0, 0, 0, 20);
}
// rotational acceleration, in degrees/s/s, in body frame
double roll_accel = 0.0;
double pitch_accel = 0.0;
double yaw_accel = 0.0;
double thrust = 0.0;
foreach (var i in range((self.motors.Length)))
{
roll_accel += -5000.0 * sin(radians(self.motors[i].angle)) * m[i];
pitch_accel += 5000.0 * cos(radians(self.motors[i].angle)) * m[i];
if (self.motors[i].clockwise)
{
yaw_accel -= m[i] * 400.0;
}
else
{
yaw_accel += m[i] * 400.0;
}
thrust += m[i] * self.thrust_scale; // newtons
}
// rotational resistance
roll_accel -= (self.pDeg / self.terminal_rotation_rate) * 5000.0;
pitch_accel -= (self.qDeg / self.terminal_rotation_rate) * 5000.0;
yaw_accel -= (self.rDeg / self.terminal_rotation_rate) * 400.0;
//Console.WriteLine("roll {0} {1} {2}", roll_accel, roll_rate, roll);
//# update rotational rates in body frame
self.pDeg += roll_accel * delta_time.TotalSeconds;
self.qDeg += pitch_accel * delta_time.TotalSeconds;
self.rDeg += yaw_accel * delta_time.TotalSeconds;
// Console.WriteLine("roll {0} {1} {2}", roll_accel, roll_rate, roll);
// calculate rates in earth frame
var answer = BodyRatesToEarthRates(self.roll, self.pitch, self.yaw,
self.pDeg, self.qDeg, self.rDeg);
self.roll_rate = answer.Item1;
self.pitch_rate = answer.Item2;
self.yaw_rate = answer.Item3;
//self.roll_rate = pDeg;
//self.pitch_rate = qDeg;
//self.yaw_rate = rDeg;
//# update rotation
roll += roll_rate * delta_time.TotalSeconds;
pitch += pitch_rate * delta_time.TotalSeconds;
yaw += yaw_rate * delta_time.TotalSeconds;
// Console.WriteLine("roll {0} {1} {2}", roll_accel, roll_rate, roll);
//Console.WriteLine("r {0:0.0} p {1:0.0} y {2:0.0} - r {3:0.0} p {4:0.0} y {5:0.0} ms {6:0.000}", roll, pitch, yaw, roll_rate, pitch_rate, yaw_rate, delta_time.TotalSeconds);
//# air resistance
Vector3d air_resistance = -velocity * (gravity / terminal_velocity);
//# normalise rotations
normalise();
double accel = thrust / mass;
//Console.WriteLine("in {0:0.000000} {1:0.000000} {2:0.000000} {3:0.000000}", roll, pitch, yaw, accel);
Vector3d accel3D = RPY_to_XYZ(roll, pitch, yaw, accel);
//Console.WriteLine("accel3D " + accel3D.X + " " + accel3D.Y + " " + accel3D.Z);
accel3D += new Vector3d(0, 0, -gravity);
accel3D += air_resistance;
Random rand = new Random();
//velocity.X += .02 + rand.NextDouble() * .03;
//velocity.Y += .02 + rand.NextDouble() * .03;
//# new velocity vector
velocity += accel3D * delta_time.TotalSeconds;
this.accel = accel3D;
//# new position vector
old_position = new Vector3d(position);
position += velocity * delta_time.TotalSeconds;
// Console.WriteLine(fdm.agl + " "+ fdm.altitude);
//Console.WriteLine("Z {0} halt {1} < gl {2} fh {3}" ,position.Z , home_altitude , ground_level , frame_height);
if (home_latitude == 0 || home_latitude > 90 || home_latitude < -90 || home_longitude == 0)
{
this.home_latitude = fdm.latitude * rad2deg;
this.home_longitude = fdm.longitude * rad2deg;
this.home_altitude = fdm.altitude * ft2m;
this.ground_level = this.home_altitude;
this.altitude = fdm.altitude * ft2m;
this.latitude = fdm.latitude * rad2deg;
this.longitude = fdm.longitude * rad2deg;
}
//# constrain height to the ground
if (position.Z + home_altitude < ground_level + frame_height)
{
if (old_position.Z + home_altitude > ground_level + frame_height)
{
// Console.WriteLine("Hit ground at {0} m/s", (-velocity.Z));
}
velocity = new Vector3d(0, 0, 0);
roll_rate = 0;
pitch_rate = 0;
yaw_rate = 0;
roll = 0;
pitch = 0;
position = new Vector3d(position.X, position.Y,
ground_level + frame_height - home_altitude + 0);
// Console.WriteLine("here " + position.Z);
}
//# update lat/lon/altitude
update_position();
// send to apm
#if MAVLINK10
ArdupilotMega.MAVLink.mavlink_gps_raw_int_t gps = new ArdupilotMega.MAVLink.mavlink_gps_raw_int_t();
#else
ArdupilotMega.MAVLink.mavlink_gps_raw_t gps = new ArdupilotMega.MAVLink.mavlink_gps_raw_t();
#endif
ArdupilotMega.MAVLink.mavlink_attitude_t att = new ArdupilotMega.MAVLink.mavlink_attitude_t();
ArdupilotMega.MAVLink.mavlink_vfr_hud_t asp = new ArdupilotMega.MAVLink.mavlink_vfr_hud_t();
att.roll = (float)roll * deg2rad;
att.pitch = (float)pitch * deg2rad;
att.yaw = (float)yaw * deg2rad;
att.rollspeed = (float)roll_rate * deg2rad;
att.pitchspeed = (float)pitch_rate * deg2rad;
att.yawspeed = (float)yaw_rate * deg2rad;
#if MAVLINK10
gps.alt = ((int)(altitude * 1000));
gps.fix_type = 3;
gps.vel = (ushort)(Math.Sqrt((velocity.X * velocity.X) + (velocity.Y * velocity.Y)) * 100);
gps.cog = (ushort)((((Math.Atan2(velocity.Y, velocity.X) * rad2deg) + 360) % 360) * 100);
gps.lat = (int)(latitude* 1.0e7);
gps.lon = (int)(longitude * 1.0e7);
gps.time_usec = ((ulong)DateTime.Now.Ticks);
asp.airspeed = gps.vel;
#else
gps.alt = ((float)(altitude));
gps.fix_type = 3;
gps.lat = ((float)latitude);
gps.lon = ((float)longitude);
gps.usec = ((ulong)DateTime.Now.Ticks);
//Random rand = new Random();
//gps.alt += (rand.Next(100) - 50) / 100.0f;
//gps.lat += (float)((rand.NextDouble() - 0.5) * 0.00005);
//gps.lon += (float)((rand.NextDouble() - 0.5) * 0.00005);
//gps.v += (float)(rand.NextDouble() - 0.5) * 1.0f;
gps.v = ((float)Math.Sqrt((velocity.X * velocity.X) + (velocity.Y * velocity.Y)));
gps.hdg = (float)(((Math.Atan2(velocity.Y, velocity.X) * rad2deg) + 360) % 360); ;
asp.airspeed = gps.v;
#endif
MainV2.comPort.sendPacket(att);
MAVLink.mavlink_raw_pressure_t pres = new MAVLink.mavlink_raw_pressure_t();
double calc = (101325 * Math.Pow(1 - 2.25577 * Math.Pow(10, -5) * gps.alt, 5.25588));
pres.press_diff1 = (short)(int)(calc); // 0 alt is 0 pa
MainV2.comPort.sendPacket(pres);
MainV2.comPort.sendPacket(asp);
if (framecount % 120 == 0)
{// 50 / 10 = 5 hz
MainV2.comPort.sendPacket(gps);
//Console.WriteLine(DateTime.Now.Millisecond + " GPS" );
}
framecount++;
}