openpilot is an open source driver assistance system. openpilot performs the functions of Automated Lane Centering and Adaptive Cruise Control for over 200 supported car makes and models.
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#!/usr/bin/env python3
import time
import sys
import argparse
import zmq
import json
import pyproj
import numpy as np
ecef = pyproj.Proj(proj='geocent', ellps='WGS84', datum='WGS84')
lla = pyproj.Proj(proj='latlong', ellps='WGS84', datum='WGS84')
import cereal.messaging as messaging
from cereal.services import service_list
poller = zmq.Poller()
ll = messaging.sub_sock("liveLocation", poller)
tll = messaging.sub_sock("testLiveLocation", poller)
l, tl = None, None
lp = time.time()
while 1:
polld = poller.poll(timeout=1000)
for sock, mode in polld:
if mode != zmq.POLLIN:
continue
if sock == ll:
l = messaging.recv_one(sock)
elif sock == tll:
tl = messaging.recv_one(sock)
if l is None or tl is None:
continue
alt_err = np.abs(l.liveLocation.alt - tl.liveLocation.alt)
l1 = pyproj.transform(lla, ecef, l.liveLocation.lon, l.liveLocation.lat, l.liveLocation.alt)
l2 = pyproj.transform(lla, ecef, tl.liveLocation.lon, tl.liveLocation.lat, tl.liveLocation.alt)
al1 = pyproj.transform(lla, ecef, l.liveLocation.lon, l.liveLocation.lat, l.liveLocation.alt)
al2 = pyproj.transform(lla, ecef, tl.liveLocation.lon, tl.liveLocation.lat, l.liveLocation.alt)
tdiff = np.abs(l.logMonoTime - tl.logMonoTime) / 1e9
if time.time()-lp > 0.1:
print("tm: %f mse: %f mse(flat): %f alterr: %f" % (tdiff, np.mean((np.array(l1)-np.array(l2))**2), np.mean((np.array(al1)-np.array(al2))**2), alt_err))
lp = time.time()