Python Wrapper for JSBsim with:
- ZMQ based exchange class for I/O
- Realtime capacities
Original Code from pyjsbsim : https://github.com/arktools/pyjsbsim
JSBSim Flight Dynamics Model code from Sourceforge : http://sourceforge.net/projects/jsbsim/
TODO
- CMake for Windows : http://www.cmake.org/cmake/resources/software.html
- MinGW : http://www.mingw.org/
cd <jsbsim_root>
mkdir build_mingw
cd build_mingw
cmake -G "MinGW Makefiles" -DBUILD_SHARED_LIBS=TRUE -DJSBSIM_ENABLE_PLUGINS=TRUE ..
mingw32-make
copy dll in pathimport os, time
from pyfdm import fdmexec
from pyfdm.exchange import zmq_exchange
#Setting JSBSIM_ROOT path
JSBSIM_ROOT = os.path.abspath('data/jsbsim_data') + os.sep
#Initializing FGFDMExec class
fdm = fdmexec.FGFDMExec(root_dir=JSBSIM_ROOT)
#Loading aircraft model
fdm.load_model("FG_c172p")
#Initializing Aircraft
fdm.set_property_value("fcs/mixture-cmd-norm",1.0)
fdm.set_property_value("propulsion/magneto_cmd",3)
fdm.set_property_value("propulsion/starter_cmd",1)
fdm.set_property_value("ic/lat-gc-rad",0.761552988)
fdm.set_property_value("ic/long-gc-rad",0.0239284344)
fdm.set_property_value("ic/h-agl-ft",1000)
fdm.set_property_value("ic/vc-kts",80)
fdm.set_property_value("ic/gamma-deg",0)
#Trim
fdm.do_trim(1)
#Defining parameters for external exchange
_IN = ['fcs/aileron-cmd-norm',
'fcs/elevator-cmd-norm',
'fcs/rudder-cmd-norm',
'fcs/flap-cmd-norm',
'fcs/speedbrake-cmd-norm',
'fcs/spoiler-cmd-norm',
'fcs/pitch-trim-cmd-norm',
'fcs/roll-trim-cmd-norm',
'fcs/yaw-trim-cmd-norm',
'fcs/left-brake-cmd-norm',
'fcs/right-brake-cmd-norm',
'fcs/steer-cmd-norm',
'fcs/throttle-cmd-norm',
'fcs/mixture-cmd-norm']
_OUT = ['position/h-sl-ft',
'position/h-sl-meters',
'position/lat-gc-rad',
'position/long-gc-rad',
'position/lat-gc-deg',
'position/long-gc-deg',
'position/h-agl-ft',
'position/h-agl-km',
'position/terrain-elevation-asl-ft']
#Defining zmq exchange parameters
zmq_tool = zmq_exchange(_IN,_OUT ,'tcp://127.0.0.1:17171','tcp://localhost:17172' )
#Registering exchange instance to FGFDMExec instance
fdm.exchange_register(zmq_tool)
#List of exchange instance registered
fdm.list_exchange_class()
#Running FDM loop
fdm.realtime(dt=1.0/100)