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115 lines
3.1 KiB
115 lines
3.1 KiB
7 years ago
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#!/usr/bin/env python
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import zmq
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from cereal import car
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from selfdrive.config import Conversions as CV
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from selfdrive.services import service_list
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import selfdrive.messaging as messaging
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# mocked car interface to work with chffrplus
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TS = 0.01 # 100Hz
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YAW_FR = 0.2 # ~0.8s time constant on yaw rate filter
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# low pass gain
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LPG = 2 * 3.1415 * YAW_FR * TS / (1 + 2 * 3.1415 * YAW_FR * TS)
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class CarInterface(object):
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def __init__(self, CP, sendcan=None):
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self.CP = CP
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print "Using Mock Car Interface"
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context = zmq.Context()
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# TODO: subscribe to phone sensor
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self.sensor = messaging.sub_sock(context, service_list['sensorEvents'].port)
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self.gps = messaging.sub_sock(context, service_list['gpsLocation'].port)
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self.speed = 0.
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self.yaw_rate = 0.
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self.yaw_rate_meas = 0.
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@staticmethod
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def compute_gb(accel, speed):
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return accel
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@staticmethod
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def calc_accel_override(a_ego, a_target, v_ego, v_target):
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return 1.0
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@staticmethod
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def get_params(candidate, fingerprint):
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ret = car.CarParams.new_message()
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ret.carName = "mock"
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ret.carFingerprint = candidate
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ret.safetyModel = car.CarParams.SafetyModels.noOutput
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# FIXME: hardcoding honda civic 2016 touring params so they can be used to
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# scale unknown params for other cars
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ret.mass = 1700.
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ret.rotationalInertia = 2500.
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ret.wheelbase = 2.70
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ret.centerToFront = ret.wheelbase * 0.5
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ret.steerRatio = 13. # reasonable
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ret.longPidDeadzoneBP = [0.]
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ret.longPidDeadzoneV = [0.]
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ret.tireStiffnessFront = 1e6 # very stiff to neglect slip
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ret.tireStiffnessRear = 1e6 # very stiff to neglect slip
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ret.steerRatioRear = 0.
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ret.steerMaxBP = [0.]
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ret.steerMaxV = [0.] # 2/3rd torque allowed above 45 kph
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ret.gasMaxBP = [0.]
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ret.gasMaxV = [0.]
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ret.brakeMaxBP = [0.]
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ret.brakeMaxV = [0.]
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ret.longitudinalKpBP = [0.]
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ret.longitudinalKpV = [0.]
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ret.longitudinalKiBP = [0.]
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ret.longitudinalKiV = [0.]
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return ret
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# returns a car.CarState
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def update(self, c):
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# get basic data from phone and gps since CAN isn't connected
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sensors = messaging.recv_sock(self.sensor)
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if sensors is not None:
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for sensor in sensors.sensorEvents:
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if sensor.type == 4: # gyro
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self.yaw_rate_meas = -sensor.gyro.v[0]
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gps = messaging.recv_sock(self.gps)
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if gps is not None:
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self.speed = gps.gpsLocation.speed
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# create message
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ret = car.CarState.new_message()
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# speeds
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ret.vEgo = self.speed
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ret.vEgoRaw = self.speed
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ret.aEgo = 0.
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self.yawRate = LPG * self.yaw_rate_meas + (1. - LPG) * self.yaw_rate
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ret.yawRate = self.yaw_rate
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ret.standstill = self.speed < 0.01
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ret.wheelSpeeds.fl = self.speed
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ret.wheelSpeeds.fr = self.speed
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ret.wheelSpeeds.rl = self.speed
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ret.wheelSpeeds.rr = self.speed
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curvature = self.yaw_rate / max(self.speed, 1.)
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ret.steeringAngle = curvature * self.CP.steerRatio * self.CP.wheelbase * CV.RAD_TO_DEG
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events = []
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ret.events = events
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return ret.as_reader()
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def apply(self, c):
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# in mock no carcontrols
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return False
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