from openpilot.selfdrive.car import make_can_msg
from openpilot.selfdrive.car.gm.values import CAR
[docs]
def create_pscm_status(packer, bus, pscm_status):
values = {s: pscm_status[s] for s in [
"HandsOffSWDetectionMode",
"HandsOffSWlDetectionStatus",
"LKATorqueDeliveredStatus",
"LKADriverAppldTrq",
"LKATorqueDelivered",
"LKATotalTorqueDelivered",
"RollingCounter",
"PSCMStatusChecksum",
]}
checksum_mod = int(1 - values["HandsOffSWlDetectionStatus"]) << 5
values["HandsOffSWlDetectionStatus"] = 1
values["PSCMStatusChecksum"] += checksum_mod
return packer.make_can_msg("PSCMStatus", bus, values)
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def create_steering_control(packer, bus, apply_steer, idx, lkas_active):
values = {
"LKASteeringCmdActive": lkas_active,
"LKASteeringCmd": apply_steer,
"RollingCounter": idx,
"LKASteeringCmdChecksum": 0x1000 - (lkas_active << 11) - (apply_steer & 0x7ff) - idx
}
return packer.make_can_msg("ASCMLKASteeringCmd", bus, values)
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def create_adas_keepalive(bus):
dat = b"\x00\x00\x00\x00\x00\x00\x00"
return [make_can_msg(0x409, dat, bus), make_can_msg(0x40a, dat, bus)]
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def create_gas_regen_command(packer, bus, throttle, idx, enabled, at_full_stop):
values = {
"GasRegenCmdActive": enabled,
"RollingCounter": idx,
"GasRegenCmdActiveInv": 1 - enabled,
"GasRegenCmd": throttle,
"GasRegenFullStopActive": at_full_stop,
"GasRegenAlwaysOne": 1,
"GasRegenAlwaysOne2": 1,
"GasRegenAlwaysOne3": 1,
}
dat = packer.make_can_msg("ASCMGasRegenCmd", bus, values)[2]
values["GasRegenChecksum"] = (((0xff - dat[1]) & 0xff) << 16) | \
(((0xff - dat[2]) & 0xff) << 8) | \
((0x100 - dat[3] - idx) & 0xff)
return packer.make_can_msg("ASCMGasRegenCmd", bus, values)
[docs]
def create_friction_brake_command(packer, bus, apply_brake, idx, enabled, near_stop, at_full_stop, CP):
mode = 0x1
# TODO: Understand this better. Volts and ICE Camera ACC cars are 0x1 when enabled with no brake
if enabled and CP.carFingerprint in (CAR.CHEVROLET_BOLT_EUV,):
mode = 0x9
if apply_brake > 0:
mode = 0xa
if at_full_stop:
mode = 0xd
# TODO: this is to have GM bringing the car to complete stop,
# but currently it conflicts with OP controls, so turned off. Not set by all cars
#elif near_stop:
# mode = 0xb
brake = (0x1000 - apply_brake) & 0xfff
checksum = (0x10000 - (mode << 12) - brake - idx) & 0xffff
values = {
"RollingCounter": idx,
"FrictionBrakeMode": mode,
"FrictionBrakeChecksum": checksum,
"FrictionBrakeCmd": -apply_brake
}
return packer.make_can_msg("EBCMFrictionBrakeCmd", bus, values)
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def create_acc_dashboard_command(packer, bus, enabled, target_speed_kph, hud_control, fcw):
target_speed = min(target_speed_kph, 255)
values = {
"ACCAlwaysOne": 1,
"ACCResumeButton": 0,
"ACCSpeedSetpoint": target_speed,
"ACCGapLevel": hud_control.leadDistanceBars * enabled, # 3 "far", 0 "inactive"
"ACCCmdActive": enabled,
"ACCAlwaysOne2": 1,
"ACCLeadCar": hud_control.leadVisible,
"FCWAlert": 0x3 if fcw else 0
}
return packer.make_can_msg("ASCMActiveCruiseControlStatus", bus, values)
[docs]
def create_adas_time_status(bus, tt, idx):
dat = [(tt >> 20) & 0xff, (tt >> 12) & 0xff, (tt >> 4) & 0xff,
((tt & 0xf) << 4) + (idx << 2)]
chksum = 0x1000 - dat[0] - dat[1] - dat[2] - dat[3]
chksum = chksum & 0xfff
dat += [0x40 + (chksum >> 8), chksum & 0xff, 0x12]
return make_can_msg(0xa1, bytes(dat), bus)
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def create_adas_steering_status(bus, idx):
dat = [idx << 6, 0xf0, 0x20, 0, 0, 0]
chksum = 0x60 + sum(dat)
dat += [chksum >> 8, chksum & 0xff]
return make_can_msg(0x306, bytes(dat), bus)
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def create_adas_accelerometer_speed_status(bus, speed_ms, idx):
spd = int(speed_ms * 16) & 0xfff
accel = 0 & 0xfff
# 0 if in park/neutral, 0x10 if in reverse, 0x08 for D/L
#stick = 0x08
near_range_cutoff = 0x27
near_range_mode = 1 if spd <= near_range_cutoff else 0
far_range_mode = 1 - near_range_mode
dat = [0x08, spd >> 4, ((spd & 0xf) << 4) | (accel >> 8), accel & 0xff, 0]
chksum = 0x62 + far_range_mode + (idx << 2) + dat[0] + dat[1] + dat[2] + dat[3] + dat[4]
dat += [(idx << 5) + (far_range_mode << 4) + (near_range_mode << 3) + (chksum >> 8), chksum & 0xff]
return make_can_msg(0x308, bytes(dat), bus)
[docs]
def create_adas_headlights_status(packer, bus):
values = {
"Always42": 0x42,
"Always4": 0x4,
}
return packer.make_can_msg("ASCMHeadlight", bus, values)
[docs]
def create_lka_icon_command(bus, active, critical, steer):
if active and steer == 1:
if critical:
dat = b"\x50\xc0\x14"
else:
dat = b"\x50\x40\x18"
elif active:
if critical:
dat = b"\x40\xc0\x14"
else:
dat = b"\x40\x40\x18"
else:
dat = b"\x00\x00\x00"
return make_can_msg(0x104c006c, dat, bus)