ardupilot/Tools/autotest/pysim/sim_wrapper.py

206 lines
6.1 KiB
Python
Executable File

#!/usr/bin/env python
from multicopter import MultiCopter
from helicopter import HeliCopter
import util, time, os, sys, math
import socket, struct
import select, errno
from pymavlink import fgFDM
def sim_send(m, a):
'''send flight information to mavproxy and flightgear'''
global fdm
from math import degrees
earth_rates = util.BodyRatesToEarthRates(a.dcm, a.gyro)
(roll, pitch, yaw) = a.dcm.to_euler()
fdm.set('latitude', a.latitude, units='degrees')
fdm.set('longitude', a.longitude, units='degrees')
fdm.set('altitude', a.altitude, units='meters')
fdm.set('phi', roll, units='radians')
fdm.set('theta', pitch, units='radians')
fdm.set('psi', yaw, units='radians')
fdm.set('phidot', earth_rates.x, units='rps')
fdm.set('thetadot', earth_rates.y, units='rps')
fdm.set('psidot', earth_rates.z, units='rps')
fdm.set('vcas', math.sqrt(a.velocity.x*a.velocity.x + a.velocity.y*a.velocity.y), units='mps')
fdm.set('v_north', a.velocity.x, units='mps')
fdm.set('v_east', a.velocity.y, units='mps')
# FG FDM protocol only supports 4 motors for display :(
fdm.set('num_engines', 4)
for i in range(4):
fdm.set('rpm', 1000*m[i], idx=i)
try:
fg_out.send(fdm.pack())
except socket.error as e:
if not e.errno in [ errno.ECONNREFUSED ]:
raise
timestamp = int((a.time_now - a.time_base) * 1e6)
buf = struct.pack('<Q17dI',
timestamp,
a.latitude, a.longitude, a.altitude, degrees(yaw),
a.velocity.x, a.velocity.y, a.velocity.z,
a.accelerometer.x, a.accelerometer.y, a.accelerometer.z,
degrees(earth_rates.x), degrees(earth_rates.y), degrees(earth_rates.z),
degrees(roll), degrees(pitch), degrees(yaw),
math.sqrt(a.velocity.x*a.velocity.x + a.velocity.y*a.velocity.y),
0x4c56414f)
try:
sim_out.send(buf)
except socket.error as e:
if not e.errno in [ errno.ECONNREFUSED ]:
raise
def sim_recv(m):
'''receive control information from SITL'''
try:
buf = sim_in.recv(28)
except socket.error as e:
if not e.errno in [ errno.EAGAIN, errno.EWOULDBLOCK ]:
raise
return
if len(buf) != 28:
return
control = list(struct.unpack('<14H', buf))
pwm = control[0:11]
# update motors
for i in range(11):
m[i] = (pwm[i]-1000)/1000.0
# update wind
global a
(speed, direction, turbulance) = control[11:]
a.wind.speed = speed*0.01
a.wind.direction = direction*0.01
a.wind.turbulance = turbulance*0.01
def interpret_address(addrstr):
'''interpret a IP:port string'''
a = addrstr.split(':')
a[1] = int(a[1])
return tuple(a)
##################
# main program
from optparse import OptionParser
parser = OptionParser("sim_wrapper.py [options]")
parser.add_option("--fgout", dest="fgout", help="flightgear output (IP:port)", default="127.0.0.1:5503")
parser.add_option("--simin", dest="simin", help="SIM input (IP:port)", default="127.0.0.1:5502")
parser.add_option("--simout", dest="simout", help="SIM output (IP:port)", default="127.0.0.1:5501")
parser.add_option("--home", dest="home", type='string', default=None, help="home lat,lng,alt,hdg (required)")
parser.add_option("--rate", dest="rate", type='int', help="SIM update rate", default=400)
parser.add_option("--wind", dest="wind", help="Simulate wind (speed,direction,turbulance)", default='0,0,0')
parser.add_option("--frame", dest="frame", help="frame type (+,X,octo)", default='+')
parser.add_option("--gimbal", dest="gimbal", action='store_true', default=False, help="enable gimbal")
parser.add_option("--speedup", type='float', default=1.0, help="speedup from realtime")
(opts, args) = parser.parse_args()
for m in [ 'home' ]:
if not opts.__dict__[m]:
print("Missing required option '%s'" % m)
parser.print_help()
sys.exit(1)
# UDP socket addresses
fg_out_address = interpret_address(opts.fgout)
sim_out_address = interpret_address(opts.simout)
sim_in_address = interpret_address(opts.simin)
# setup output to flightgear
fg_out = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
fg_out.connect(fg_out_address)
fg_out.setblocking(0)
# setup input from SITL
sim_in = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sim_in.bind(sim_in_address)
sim_in.setblocking(1)
# setup output to SITL
sim_out = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sim_out.connect(sim_out_address)
sim_out.setblocking(0)
# FG FDM object
fdm = fgFDM.fgFDM()
# create the quadcopter model
if opts.frame == 'heli':
a = HeliCopter(frame=opts.frame)
elif opts.frame == 'IrisRos':
from iris_ros import IrisRos
a = IrisRos()
else:
a = MultiCopter(frame=opts.frame)
print("Simulating for frame %s" % opts.frame)
# motors initially off
m = [0.0] * 11
# parse home
v = opts.home.split(',')
if len(v) != 4:
print("home should be lat,lng,alt,hdg")
sys.exit(1)
a.home_latitude = float(v[0])
a.home_longitude = float(v[1])
a.home_altitude = float(v[2])
a.latitude = a.home_latitude
a.longitude = a.home_longitude
a.altitude = a.home_altitude
a.yaw = float(v[3])
a.ground_level = a.home_altitude
a.position.z = 0
a.wind = util.Wind(opts.wind)
a.set_yaw_degrees(a.yaw)
print("Starting at lat=%f lon=%f alt=%.1f heading=%.1f" % (
a.home_latitude,
a.home_longitude,
a.home_altitude,
a.yaw))
if opts.gimbal:
from gimbal import Gimbal3Axis
gimbal = Gimbal3Axis(a)
print("Adding gimbal support")
else:
gimbal = None
a.setup_frame_time(opts.rate, opts.speedup)
counter = 0
while True:
frame_start = a.time_now
sim_recv(m)
m2 = m[:]
a.update(m2)
if gimbal is not None:
gimbal.update()
sim_send(m, a)
a.sync_frame_time()
if frame_start == a.time_now:
# time has not been advanced by a.update()
a.time_advance(a.frame_time)
counter += 1
if counter == 1000:
print("t=%f speedup=%.1f" % ((a.time_now - a.time_base), a.achieved_rate/a.rate))
counter = 0