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 os
import random
import time
from collections import defaultdict
from functools import wraps
import cereal.messaging as messaging
from cereal import car
from common.basedir import BASEDIR
from common.hardware import ANDROID
from common.params import Params
from common.spinner import Spinner
from panda import Panda
from selfdrive.boardd.boardd import can_list_to_can_capnp
from selfdrive.car import make_can_msg
from selfdrive.test.helpers import with_processes
def reset_panda(fn):
@wraps(fn)
def wrapper():
p = Panda()
for i in [0, 1, 2, 0xFFFF]:
p.can_clear(i)
p.reset()
p.close()
fn()
return wrapper
os.environ['STARTED'] = '1'
os.environ['BOARDD_LOOPBACK'] = '1'
os.environ['BASEDIR'] = BASEDIR
@reset_panda
@with_processes(['boardd'])
def test_boardd_loopback():
# wait for boardd to init
spinner = Spinner(noop=(not ANDROID))
time.sleep(2)
# boardd blocks on CarVin and CarParams
cp = car.CarParams.new_message()
cp.safetyModel = car.CarParams.SafetyModel.allOutput
Params().put("CarVin", b"0"*17)
Params().put("CarParams", cp.to_bytes())
sendcan = messaging.pub_sock('sendcan')
can = messaging.sub_sock('can', conflate=False, timeout=100)
time.sleep(1)
n = 1000
for i in range(n):
spinner.update(f"boardd loopback {i}/{n}")
sent_msgs = defaultdict(set)
for _ in range(random.randrange(10)):
to_send = []
for __ in range(random.randrange(100)):
bus = random.randrange(3)
addr = random.randrange(1, 1<<29)
dat = bytes([random.getrandbits(8) for _ in range(random.randrange(1, 9))])
sent_msgs[bus].add((addr, dat))
to_send.append(make_can_msg(addr, dat, bus))
sendcan.send(can_list_to_can_capnp(to_send, msgtype='sendcan'))
max_recv = 10
while max_recv > 0 and any(len(sent_msgs[bus]) for bus in range(3)):
recvd = messaging.drain_sock(can, wait_for_one=True)
for msg in recvd:
for m in msg.can:
if m.src >= 128:
k = (m.address, m.dat)
assert k in sent_msgs[m.src-128]
sent_msgs[m.src-128].discard(k)
max_recv -= 1
# if a set isn't empty, messages got dropped
for bus in range(3):
assert not len(sent_msgs[bus]), f"loop {i}: bus {bus} missing {len(sent_msgs[bus])} messages"
spinner.close()
if __name__ == "__main__":
test_boardd_loopback()