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 argparse
import numpy as np
import time
from collections import defaultdict, deque
from typing import DefaultDict, Deque, MutableSequence
import cereal.messaging as messaging
if __name__ == "__main__":
context = messaging.Context()
poller = messaging.Poller()
parser = argparse.ArgumentParser()
parser.add_argument("socket", type=str, nargs='*', help="socket name")
args = parser.parse_args()
socket_names = args.socket
sockets = {}
rcv_times: DefaultDict[str, MutableSequence[float]] = defaultdict(lambda: deque(maxlen=100))
valids: DefaultDict[str, Deque[bool]] = defaultdict(lambda: deque(maxlen=100))
t = time.monotonic()
for name in socket_names:
sock = messaging.sub_sock(name, poller=poller)
sockets[sock] = name
prev_print = t
while True:
for socket in poller.poll(100):
msg = messaging.recv_one(socket)
if msg is None:
continue
name = msg.which()
t = time.monotonic()
rcv_times[name].append(msg.logMonoTime / 1e9)
valids[name].append(msg.valid)
if t - prev_print > 1:
print()
for name in socket_names:
dts = np.diff(rcv_times[name])
mean = np.mean(dts)
print(f"{name}: Freq {1.0 / mean:.2f} Hz, Min {np.min(dts) / mean * 100:.2f}%, Max {np.max(dts) / mean * 100:.2f}%, valid ", all(valids[name]))
prev_print = t