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 python2
import unittest
import numpy as np
import libpandasafety_py
MAX_RATE_UP = 10
MAX_RATE_DOWN = 25
MAX_TORQUE = 1500
MAX_ACCEL = 1500
MIN_ACCEL = -3000
MAX_RT_DELTA = 375
RT_INTERVAL = 250000
MAX_TORQUE_ERROR = 350
def twos_comp(val, bits):
if val >= 0:
return val
else:
return (2**bits) + val
def sign(a):
if a > 0:
return 1
else:
return -1
class TestToyotaSafety(unittest.TestCase):
@classmethod
def setUp(cls):
cls.safety = libpandasafety_py.libpandasafety
cls.safety.safety_set_mode(2, 100)
cls.safety.init_tests_toyota()
def _send_msg(self, bus, addr, length):
to_send = libpandasafety_py.ffi.new('CAN_FIFOMailBox_TypeDef *')
to_send[0].RIR = addr << 21
to_send[0].RDTR = length
to_send[0].RDTR = bus << 4
return to_send
def _set_prev_torque(self, t):
self.safety.set_toyota_desired_torque_last(t)
self.safety.set_toyota_rt_torque_last(t)
self.safety.set_toyota_torque_meas(t, t)
def _torque_meas_msg(self, torque):
to_send = libpandasafety_py.ffi.new('CAN_FIFOMailBox_TypeDef *')
to_send[0].RIR = 0x260 << 21
t = twos_comp(torque, 16)
to_send[0].RDHR = t | ((t & 0xFF) << 16)
return to_send
def _torque_msg(self, torque):
to_send = libpandasafety_py.ffi.new('CAN_FIFOMailBox_TypeDef *')
to_send[0].RIR = 0x2E4 << 21
t = twos_comp(torque, 16)
to_send[0].RDLR = t | ((t & 0xFF) << 16)
return to_send
def _accel_msg(self, accel):
to_send = libpandasafety_py.ffi.new('CAN_FIFOMailBox_TypeDef *')
to_send[0].RIR = 0x343 << 21
a = twos_comp(accel, 16)
to_send[0].RDLR = (a & 0xFF) << 8 | (a >> 8)
return to_send
def _send_gas_msg(self, gas):
to_send = libpandasafety_py.ffi.new('CAN_FIFOMailBox_TypeDef *')
to_send[0].RIR = 0x2C1 << 21
to_send[0].RDHR = (gas & 0xFF) << 16
return to_send
def _send_interceptor_msg(self, gas, addr):
to_send = libpandasafety_py.ffi.new('CAN_FIFOMailBox_TypeDef *')
to_send[0].RIR = addr << 21
to_send[0].RDTR = 6
to_send[0].RDLR = ((gas & 0xff) << 8) | ((gas & 0xff00) >> 8)
return to_send
def _pcm_cruise_msg(self, cruise_on):
to_send = libpandasafety_py.ffi.new('CAN_FIFOMailBox_TypeDef *')
to_send[0].RIR = 0x1D2 << 21
to_send[0].RDLR = cruise_on << 5
return to_send
def test_default_controls_not_allowed(self):
self.assertFalse(self.safety.get_controls_allowed())
def test_manually_enable_controls_allowed(self):
self.safety.set_controls_allowed(1)
self.assertTrue(self.safety.get_controls_allowed())
def test_enable_control_allowed_from_cruise(self):
self.safety.safety_rx_hook(self._pcm_cruise_msg(False))
self.assertFalse(self.safety.get_controls_allowed())
self.safety.safety_rx_hook(self._pcm_cruise_msg(True))
self.assertTrue(self.safety.get_controls_allowed())
def test_disable_control_allowed_from_cruise(self):
self.safety.set_controls_allowed(1)
self.safety.safety_rx_hook(self._pcm_cruise_msg(False))
self.assertFalse(self.safety.get_controls_allowed())
def test_prev_gas(self):
for g in range(0, 256):
self.safety.safety_rx_hook(self._send_gas_msg(g))
self.assertEqual(g, self.safety.get_toyota_gas_prev())
def test_prev_gas_interceptor(self):
self.safety.safety_rx_hook(self._send_interceptor_msg(0x0, 0x201))
self.assertFalse(self.safety.get_gas_interceptor_prev())
self.safety.safety_rx_hook(self._send_interceptor_msg(0x1000, 0x201))
self.assertTrue(self.safety.get_gas_interceptor_prev())
self.safety.safety_rx_hook(self._send_interceptor_msg(0x0, 0x201))
self.safety.set_gas_interceptor_detected(False)
def test_disengage_on_gas(self):
for long_controls_allowed in [0, 1]:
self.safety.set_long_controls_allowed(long_controls_allowed)
self.safety.safety_rx_hook(self._send_gas_msg(0))
self.safety.set_controls_allowed(True)
self.safety.safety_rx_hook(self._send_gas_msg(1))
if long_controls_allowed:
self.assertFalse(self.safety.get_controls_allowed())
else:
self.assertTrue(self.safety.get_controls_allowed())
self.safety.set_long_controls_allowed(True)
def test_allow_engage_with_gas_pressed(self):
self.safety.safety_rx_hook(self._send_gas_msg(1))
self.safety.set_controls_allowed(True)
self.safety.safety_rx_hook(self._send_gas_msg(1))
self.assertTrue(self.safety.get_controls_allowed())
self.safety.safety_rx_hook(self._send_gas_msg(1))
self.assertTrue(self.safety.get_controls_allowed())
def test_disengage_on_gas_interceptor(self):
for long_controls_allowed in [0, 1]:
self.safety.set_long_controls_allowed(long_controls_allowed)
self.safety.safety_rx_hook(self._send_interceptor_msg(0, 0x201))
self.safety.set_controls_allowed(True)
self.safety.safety_rx_hook(self._send_interceptor_msg(0x1000, 0x201))
if long_controls_allowed:
self.assertFalse(self.safety.get_controls_allowed())
else:
self.assertTrue(self.safety.get_controls_allowed())
self.safety.safety_rx_hook(self._send_interceptor_msg(0, 0x201))
self.safety.set_gas_interceptor_detected(False)
self.safety.set_long_controls_allowed(True)
def test_allow_engage_with_gas_interceptor_pressed(self):
self.safety.safety_rx_hook(self._send_interceptor_msg(0x1000, 0x201))
self.safety.set_controls_allowed(1)
self.safety.safety_rx_hook(self._send_interceptor_msg(0x1000, 0x201))
self.assertTrue(self.safety.get_controls_allowed())
self.safety.safety_rx_hook(self._send_interceptor_msg(0, 0x201))
self.safety.set_gas_interceptor_detected(False)
def test_accel_actuation_limits(self):
for long_controls_allowed in [0, 1]:
self.safety.set_long_controls_allowed(long_controls_allowed)
for accel in np.arange(MIN_ACCEL - 1000, MAX_ACCEL + 1000, 100):
for controls_allowed in [True, False]:
self.safety.set_controls_allowed(controls_allowed)
if controls_allowed and long_controls_allowed:
send = MIN_ACCEL <= accel <= MAX_ACCEL
else:
send = accel == 0
self.assertEqual(send, self.safety.safety_tx_hook(self._accel_msg(accel)))
self.safety.set_long_controls_allowed(True)
def test_torque_absolute_limits(self):
for controls_allowed in [True, False]:
for torque in np.arange(-MAX_TORQUE - 1000, MAX_TORQUE + 1000, MAX_RATE_UP):
self.safety.set_controls_allowed(controls_allowed)
self.safety.set_toyota_rt_torque_last(torque)
self.safety.set_toyota_torque_meas(torque, torque)
self.safety.set_toyota_desired_torque_last(torque - MAX_RATE_UP)
if controls_allowed:
send = (-MAX_TORQUE <= torque <= MAX_TORQUE)
else:
send = torque == 0
self.assertEqual(send, self.safety.safety_tx_hook(self._torque_msg(torque)))
def test_non_realtime_limit_up(self):
self.safety.set_controls_allowed(True)
self._set_prev_torque(0)
self.assertTrue(self.safety.safety_tx_hook(self._torque_msg(MAX_RATE_UP)))
self._set_prev_torque(0)
self.assertFalse(self.safety.safety_tx_hook(self._torque_msg(MAX_RATE_UP + 1)))
def test_non_realtime_limit_down(self):
self.safety.set_controls_allowed(True)
self.safety.set_toyota_rt_torque_last(1000)
self.safety.set_toyota_torque_meas(500, 500)
self.safety.set_toyota_desired_torque_last(1000)
self.assertTrue(self.safety.safety_tx_hook(self._torque_msg(1000 - MAX_RATE_DOWN)))
self.safety.set_toyota_rt_torque_last(1000)
self.safety.set_toyota_torque_meas(500, 500)
self.safety.set_toyota_desired_torque_last(1000)
self.assertFalse(self.safety.safety_tx_hook(self._torque_msg(1000 - MAX_RATE_DOWN + 1)))
def test_exceed_torque_sensor(self):
self.safety.set_controls_allowed(True)
for sign in [-1, 1]:
self._set_prev_torque(0)
for t in np.arange(0, MAX_TORQUE_ERROR + 10, 10):
t *= sign
self.assertTrue(self.safety.safety_tx_hook(self._torque_msg(t)))
self.assertFalse(self.safety.safety_tx_hook(self._torque_msg(sign * (MAX_TORQUE_ERROR + 10))))
def test_realtime_limit_up(self):
self.safety.set_controls_allowed(True)
for sign in [-1, 1]:
self.safety.init_tests_toyota()
self._set_prev_torque(0)
for t in np.arange(0, 380, 10):
t *= sign
self.safety.set_toyota_torque_meas(t, t)
self.assertTrue(self.safety.safety_tx_hook(self._torque_msg(t)))
self.assertFalse(self.safety.safety_tx_hook(self._torque_msg(sign * 380)))
self._set_prev_torque(0)
for t in np.arange(0, 370, 10):
t *= sign
self.safety.set_toyota_torque_meas(t, t)
self.assertTrue(self.safety.safety_tx_hook(self._torque_msg(t)))
# Increase timer to update rt_torque_last
self.safety.set_timer(RT_INTERVAL + 1)
self.assertTrue(self.safety.safety_tx_hook(self._torque_msg(sign * 370)))
self.assertTrue(self.safety.safety_tx_hook(self._torque_msg(sign * 380)))
def test_torque_measurements(self):
self.safety.safety_rx_hook(self._torque_meas_msg(50))
self.safety.safety_rx_hook(self._torque_meas_msg(-50))
self.safety.safety_rx_hook(self._torque_meas_msg(0))
self.safety.safety_rx_hook(self._torque_meas_msg(0))
self.safety.safety_rx_hook(self._torque_meas_msg(0))
self.safety.safety_rx_hook(self._torque_meas_msg(0))
self.assertEqual(-51, self.safety.get_toyota_torque_meas_min())
self.assertEqual(51, self.safety.get_toyota_torque_meas_max())
self.safety.safety_rx_hook(self._torque_meas_msg(0))
self.assertEqual(1, self.safety.get_toyota_torque_meas_max())
self.assertEqual(-51, self.safety.get_toyota_torque_meas_min())
self.safety.safety_rx_hook(self._torque_meas_msg(0))
self.assertEqual(1, self.safety.get_toyota_torque_meas_max())
self.assertEqual(-1, self.safety.get_toyota_torque_meas_min())
def test_gas_interceptor_safety_check(self):
self.safety.set_controls_allowed(0)
self.assertTrue(self.safety.safety_tx_hook(self._send_interceptor_msg(0, 0x200)))
self.assertFalse(self.safety.safety_tx_hook(self._send_interceptor_msg(0x1000, 0x200)))
self.safety.set_controls_allowed(1)
self.assertTrue(self.safety.safety_tx_hook(self._send_interceptor_msg(0x1000, 0x200)))
def test_fwd_hook(self):
buss = range(0x0, 0x3)
msgs = range(0x1, 0x800)
long_controls_allowed = [0, 1]
toyota_camera_forwarded = [0, 1]
for tcf in toyota_camera_forwarded:
self.safety.set_toyota_camera_forwarded(tcf)
for lca in long_controls_allowed:
self.safety.set_long_controls_allowed(lca)
blocked_msgs = [0x2E4, 0x412, 0x191]
if lca:
blocked_msgs += [0x343]
for b in buss:
for m in msgs:
if tcf:
if b == 0:
fwd_bus = 2
elif b == 1:
fwd_bus = -1
elif b == 2:
fwd_bus = -1 if m in blocked_msgs else 0
else:
fwd_bus = -1
# assume len 8
self.assertEqual(fwd_bus, self.safety.safety_fwd_hook(b, self._send_msg(b, m, 8)))
self.safety.set_long_controls_allowed(True)
if __name__ == "__main__":
unittest.main()