def main():
#./ in the path name forces the current directory to be searched
# instead of LD_LIBRARY_PATH (/lib, /usr/libm, etc)
vsd.load_vss_shared_object("./example.so")
sig = vsd.signal("Modem.DataLink.Status")
if not sig:
print("Could not resolve signal Modem.DataLink.Status")
sys.exit(255)
vsd.set(sig, "connecting")
sig = vsd.signal("Modem.SignalStrength")
if not sig:
print("Could not resolve signal Modem.SignalStrength")
sys.exit(255)
vsd.set(sig, 12)
pub = vsd.signal("Modem")
dstc.activate()
stop_ts = current_milli_time() + 400
while (current_milli_time() < stop_ts):
dstc.process_events(stop_ts - current_milli_time())
vsd.publish(pub)
dstc.process_pending_events()
def main():
vsd.load_vss_shared_object("./example.so")
dstc.activate()
vsd.set_callback(process_signal)
sig = vsd.signal("Modem");
if not sig:
print("Could not resolve signal Modem")
sys.exit(255)
vsd.subscribe(sig)
global exit_flag
while not exit_flag:
dstc.process_events(-1)
def __init__(self, myFifo, csv_file):
global fifo_fd
if verbose:
logging.info("rmc_ipc __init__()...")
logging.info("rmc_ipc __init__(), myFifo is " + str(myFifo))
logging.info("rmc_ipc __init__(), csv_file is " + str(csv_file))
self._re = re.compile('^Vehicle\.([a-zA-Z]+)')
# open fifo for read/write non-blocking
self._myFifo = myFifo
self._signals = parse_csv(csv_file)
if not self._signals:
print("From rmc_ipc, ERROR: no signals could not be parsed from " + csv_file)
sys.exit(1)
fifo_fd = os.open(self._myFifo, os.O_RDWR | os.O_NONBLOCK)
if verbose:
logging.info("rmc_ipc init(), the fifo_fd is " + str(fifo_fd))
self.client_func = dstc.register_client_function("set_fm_frequency", "d")
self._ctx = vsd.create_context()
vsd.set_callback(self._ctx, process_signal)
if vsd.load_from_file(self._ctx, "./vss_rel_2.0.0-alpha+005.csv") != 0:
print("Could not load vss_rel_2.0.0-alpha+005.csv")
sys.exit(255)
sig = vsd.signal(self._ctx, "Vehicle.setfrequency");
vsd.subscribe(self._ctx, sig)
if verbose:
logging.info("rmc_ipc is waiting for remote dstc function")
dstc.activate()
# 100000 seems enough
# increase this value if tests timeout
# also see dstc.process_events() in send()
while not dstc.remote_function_available(self.client_func):
dstc.process_events(100000)
if verbose:
logging.info("From class RMCIPC, init complete")
import dstc
do_exit = False
def double_value_callback(doubled_value):
global do_exit
print("Callback-delivered value: {}".format(doubled_value))
do_exit = True
if __name__ == "__main__":
# Setup a client call to the server that will double the value for us.
# double_value_server() takes an integer ("i") with the value to double
# and a callback ("&") that double_value_server() is to invoke
# on this process in order to deliver the result.
client_func = dstc.register_client_function("double_value_server", "i&")
dstc.activate()
print("Waiting for remote function")
while not dstc.remote_function_available(client_func):
dstc.process_events(100000)
#
# Call the server's double_value_server() function, providing 21
# as the value to double.
#
# The second argument, (double_value_callback, "i"), matches the
# ampersand in the "i&" and specifies the local function
# (double_value_callback()) that the remote double_value_server()
# function is to invoke in order to deliver the result.
#
client_func(21, (double_value_callback, "i"))
def activate():
dstc.activate()