"""AR-Autopilot Modbus RTU register map -- generated mirror of the firmware.

AUTO-GENERATED. Do not edit by hand.
Source: firmware/ar_autopilot_v1/modbus_registers.yaml
Regenerate with: python tools/gen_modbus_registers.py
"""

from __future__ import annotations

from dataclasses import dataclass


@dataclass(frozen=True)
class Reg:
    """One Modbus register entry as seen from Python tooling."""
    addr: int
    name: str
    desc: str = ""
    unit: str = ""
    scale: float = 1.0
    offset: float = 0.0


MAP_SCHEMA_VERSION = "0.1.0"
SLAVE_ID = 1
BAUDRATE = 38400
PARITY = "N"
DATA_BITS = 8
STOP_BITS = 1

# DISCRETES
DISCRETES: dict[str, Reg] = {
    "PILOT_ENGAGED": Reg(addr=0, name="PILOT_ENGAGED", desc='1 if the pilot is currently engaged (any mode other than STANDBY)', unit="", scale=1.0, offset=0.0),
    "DI_DISENGAGE_BUTTON": Reg(addr=1, name="DI_DISENGAGE_BUTTON", desc='Live state of the physical Engage/Disengage push-button', unit="", scale=1.0, offset=0.0),
    "DI_LIMIT_PORT": Reg(addr=2, name="DI_LIMIT_PORT", desc='Port-side rudder mechanical end-stop reached', unit="", scale=1.0, offset=0.0),
    "DI_LIMIT_STBD": Reg(addr=3, name="DI_LIMIT_STBD", desc='Starboard-side rudder mechanical end-stop reached', unit="", scale=1.0, offset=0.0),
    "DI_EXTERNAL_ALARM": Reg(addr=4, name="DI_EXTERNAL_ALARM", desc='External critical alarm (VMS / genset) asserted', unit="", scale=1.0, offset=0.0),
    "DI_MANUAL_CONFIRM": Reg(addr=5, name="DI_MANUAL_CONFIRM", desc='Manual confirmation switch asserted (emergency override)', unit="", scale=1.0, offset=0.0),
    "ACTUATOR_POWER": Reg(addr=8, name="ACTUATOR_POWER", desc='Master actuator power relay (DO3) commanded ON', unit="", scale=1.0, offset=0.0),
    "ACTUATOR_DRIVING_PORT": Reg(addr=9, name="ACTUATOR_DRIVING_PORT", desc='Actuator direction output: driving to port', unit="", scale=1.0, offset=0.0),
    "ACTUATOR_DRIVING_STBD": Reg(addr=10, name="ACTUATOR_DRIVING_STBD", desc='Actuator direction output: driving to starboard', unit="", scale=1.0, offset=0.0),
    "ALARM_OFF_COURSE": Reg(addr=16, name="ALARM_OFF_COURSE", desc='Off-course warning active', unit="", scale=1.0, offset=0.0),
    "ALARM_OFF_COURSE_SEVERE": Reg(addr=17, name="ALARM_OFF_COURSE_SEVERE", desc='Severe off-course alarm (auto-disengage)', unit="", scale=1.0, offset=0.0),
    "ALARM_RUDDER_NOT_RESP": Reg(addr=18, name="ALARM_RUDDER_NOT_RESP", desc='Rudder command sent but no feedback motion', unit="", scale=1.0, offset=0.0),
    "ALARM_HEADING_LOST": Reg(addr=19, name="ALARM_HEADING_LOST", desc='NMEA 2000 heading PGN not received >5 s', unit="", scale=1.0, offset=0.0),
    "ALARM_ACTUATOR_OVERCURR": Reg(addr=20, name="ALARM_ACTUATOR_OVERCURR", desc='Actuator current over threshold', unit="", scale=1.0, offset=0.0),
    "ALARM_VOLTAGE_LOW": Reg(addr=21, name="ALARM_VOLTAGE_LOW", desc='Supply voltage below safe threshold', unit="", scale=1.0, offset=0.0),
    "ALARM_LIMIT_REACHED": Reg(addr=22, name="ALARM_LIMIT_REACHED", desc='Rudder reached mechanical end-stop', unit="", scale=1.0, offset=0.0),
    "ALARM_WATCHDOG_TRIPPED": Reg(addr=23, name="ALARM_WATCHDOG_TRIPPED", desc='Firmware watchdog fired -- controller reset', unit="", scale=1.0, offset=0.0),
    "ALARM_VMS_CRITICAL": Reg(addr=24, name="ALARM_VMS_CRITICAL", desc='VMS reported blackout or electrical fault', unit="", scale=1.0, offset=0.0),
    "ANY_ALARM_ACTIVE": Reg(addr=25, name="ANY_ALARM_ACTIVE", desc='OR of all alarm bits (convenience)', unit="", scale=1.0, offset=0.0),
}

# COILS
COILS: dict[str, Reg] = {
    "CMD_ENGAGE_REQUEST": Reg(addr=0, name="CMD_ENGAGE_REQUEST", desc='Rising edge requests pilot engagement (subject to interlocks)', unit="", scale=1.0, offset=0.0),
    "CMD_DISENGAGE_REQUEST": Reg(addr=1, name="CMD_DISENGAGE_REQUEST", desc='Rising edge forces pilot to STANDBY', unit="", scale=1.0, offset=0.0),
    "CMD_ACK_ALL_ALARMS": Reg(addr=2, name="CMD_ACK_ALL_ALARMS", desc='Rising edge acknowledges every active alarm', unit="", scale=1.0, offset=0.0),
    "CMD_KNOB_ARM": Reg(addr=3, name="CMD_KNOB_ARM", desc='Knob arming request (Sprint 7+)', unit="", scale=1.0, offset=0.0),
}

# INPUTS
INPUTS: dict[str, Reg] = {
    "FW_VERSION_MAJOR": Reg(addr=0, name="FW_VERSION_MAJOR", desc='Firmware major version', unit="", scale=1.0, offset=0.0),
    "FW_VERSION_MINOR": Reg(addr=1, name="FW_VERSION_MINOR", desc='Firmware minor version', unit="", scale=1.0, offset=0.0),
    "FW_VERSION_PATCH": Reg(addr=2, name="FW_VERSION_PATCH", desc='Firmware patch version', unit="", scale=1.0, offset=0.0),
    "SCHEMA_VERSION": Reg(addr=3, name="SCHEMA_VERSION", desc='Modbus map schema version (0=v0.1.0)', unit="", scale=1.0, offset=0.0),
    "UPTIME_SECONDS_LO": Reg(addr=4, name="UPTIME_SECONDS_LO", desc='Uptime seconds, low 16 bits', unit="s", scale=1.0, offset=0.0),
    "UPTIME_SECONDS_HI": Reg(addr=5, name="UPTIME_SECONDS_HI", desc='Uptime seconds, high 16 bits', unit="s", scale=1.0, offset=0.0),
    "CURRENT_MODE": Reg(addr=6, name="CURRENT_MODE", desc='Current AutopilotMode (0=STANDBY,1=HH,2=TC,3=TK,4=DODGE)', unit="", scale=1.0, offset=0.0),
    "FREE_HEAP_KB": Reg(addr=7, name="FREE_HEAP_KB", desc='Current free heap, KiB', unit="KiB", scale=1.0, offset=0.0),
    "MIN_FREE_HEAP_KB": Reg(addr=8, name="MIN_FREE_HEAP_KB", desc='Minimum free heap since boot', unit="KiB", scale=1.0, offset=0.0),
    "RUDDER_ANGLE_DEG_X100": Reg(addr=16, name="RUDDER_ANGLE_DEG_X100", desc='Filtered rudder angle, deg * 100 (-3500..+3500)', unit="deg", scale=0.01, offset=0.0),
    "RUDDER_RAW_ADC": Reg(addr=17, name="RUDDER_RAW_ADC", desc='Raw ADC reading after median filter (0..4095)', unit="counts", scale=1.0, offset=0.0),
    "RUDDER_VALID": Reg(addr=18, name="RUDDER_VALID", desc='1 if median filter has filled (>=5 samples)', unit="", scale=1.0, offset=0.0),
    "HEADING_DEG_X100": Reg(addr=24, name="HEADING_DEG_X100", desc='Current heading from NMEA 2000 PGN 127250, deg*100 (0..35999)', unit="deg", scale=0.01, offset=0.0),
    "ROT_DPS_X100": Reg(addr=25, name="ROT_DPS_X100", desc='Rate of turn from PGN 127251, deg/s*100 (signed int16)', unit="deg/s", scale=0.01, offset=0.0),
    "HEADING_AGE_MS": Reg(addr=26, name="HEADING_AGE_MS", desc='Milliseconds since the last heading update (0..60000)', unit="ms", scale=1.0, offset=0.0),
    "BATTERY_VOLTAGE_X100": Reg(addr=32, name="BATTERY_VOLTAGE_X100", desc='System battery voltage, V*100', unit="V", scale=0.01, offset=0.0),
    "ACTUATOR_CURRENT_X100": Reg(addr=33, name="ACTUATOR_CURRENT_X100", desc='Actuator current, A*100', unit="A", scale=0.01, offset=0.0),
}

# HOLDINGS
HOLDINGS: dict[str, Reg] = {
    "MODE_REQUEST": Reg(addr=0, name="MODE_REQUEST", desc='Mode requested by operator (0=STANDBY,1=HH,2=TC,3=TK,4=DODGE)', unit="", scale=1.0, offset=0.0),
    "HEADING_SETPOINT_X100": Reg(addr=1, name="HEADING_SETPOINT_X100", desc='Desired heading, deg*100', unit="deg", scale=0.01, offset=0.0),
    "BRIGHTNESS_PCT": Reg(addr=2, name="BRIGHTNESS_PCT", desc='Display brightness 0..100', unit="%", scale=1.0, offset=0.0),
    "ALARM_VOLUME_PCT": Reg(addr=3, name="ALARM_VOLUME_PCT", desc='Alarm volume 0..100', unit="%", scale=1.0, offset=0.0),
    "DODGE_OFFSET_DEG_X100": Reg(addr=8, name="DODGE_OFFSET_DEG_X100", desc='Dodge mode heading offset, deg*100 (signed int16)', unit="deg", scale=0.01, offset=0.0),
}

ALL_GROUPS: dict[str, dict[str, Reg]] = {
    "discretes": DISCRETES,
    "coils": COILS,
    "inputs": INPUTS,
    "holdings": HOLDINGS,
}