text: import os
  import subprocess
  from pathlib import Path
  from smbus2 import SMBus
  
  from cereal import log
  from selfdrive.hardware.base import HardwareBase, ThermalConfig
  
  NM = 'org.freedesktop.NetworkManager'
  NM_CON_ACT = NM + '.Connection.Active'
  NM_DEV_WL = NM + '.Device.Wireless'
  NM_AP = NM + '.AccessPoint'
  DBUS_PROPS = 'org.freedesktop.DBus.Properties'
  
  MM = 'org.freedesktop.ModemManager1'
  MM_MODEM = MM + ".Modem"
  MM_MODEM_SIMPLE = MM + ".Modem.Simple"
  MM_SIM = MM + ".Sim"
  
  MM_MODEM_STATE_CONNECTED = 11
  
  TIMEOUT = 0.1
  
  NetworkType = log.DeviceState.NetworkType
  NetworkStrength = log.DeviceState.NetworkStrength
  
  # https://developer.gnome.org/ModemManager/unstable/ModemManager-Flags-and-Enumerations.html#MMModemAccessTechnology
  MM_MODEM_ACCESS_TECHNOLOGY_UMTS = 1 << 5
  MM_MODEM_ACCESS_TECHNOLOGY_LTE = 1 << 14
  
  AMP_I2C_BUS = 0
  AMP_ADDRESS = 0x10
  
  def write_amplifier_reg(reg, val, offset, mask):
    with SMBus(AMP_I2C_BUS) as bus:
      v = bus.read_byte_data(AMP_ADDRESS, reg, force=True)
      v = (v & (~mask)) | ((val << offset) & mask)
      bus.write_byte_data(AMP_ADDRESS, reg, v, force=True)
  
  class Tici(HardwareBase):
    def __init__(self):
      import dbus  # pylint: disable=import-error
  
      self.bus = dbus.SystemBus()
      self.nm = self.bus.get_object(NM, '/org/freedesktop/NetworkManager')
      self.mm = self.bus.get_object(MM, '/org/freedesktop/ModemManager1')
  
    def get_os_version(self):
      with open("/VERSION") as f:
        return f.read().strip()
  
    def get_device_type(self):
      return "tici"
  
    def get_sound_card_online(self):
      return (os.path.isfile('/proc/asound/card0/state') and
              open('/proc/asound/card0/state').read().strip() == 'ONLINE')
  
    def reboot(self, reason=None):
      subprocess.check_output(["sudo", "reboot"])
  
    def uninstall(self):
      Path("/data/__system_reset__").touch()
      os.sync()
      self.reboot()
  
    def get_serial(self):
      return self.get_cmdline()['androidboot.serialno']
  
    def get_network_type(self):
      try:
        primary_connection = self.nm.Get(NM, 'PrimaryConnection', dbus_interface=DBUS_PROPS, timeout=TIMEOUT)
        primary_connection = self.bus.get_object(NM, primary_connection)
        tp = primary_connection.Get(NM_CON_ACT, 'Type', dbus_interface=DBUS_PROPS, timeout=TIMEOUT)
  
        if tp in ['802-3-ethernet', '802-11-wireless']:
          return NetworkType.wifi
        elif tp in ['gsm']:
          modem = self.get_modem()
          access_t = modem.Get(MM_MODEM, 'AccessTechnologies', dbus_interface=DBUS_PROPS, timeout=TIMEOUT)
          if access_t >= MM_MODEM_ACCESS_TECHNOLOGY_LTE:
            return NetworkType.cell4G
          elif access_t >= MM_MODEM_ACCESS_TECHNOLOGY_UMTS:
            return NetworkType.cell3G
          else:
            return NetworkType.cell2G
      except Exception:
        pass
  
      return NetworkType.none
  
    def get_modem(self):
      objects = self.mm.GetManagedObjects(dbus_interface="org.freedesktop.DBus.ObjectManager", timeout=TIMEOUT)
      modem_path = list(objects.keys())[0]
      return self.bus.get_object(MM, modem_path)
  
    def get_wlan(self):
      wlan_path = self.nm.GetDeviceByIpIface('wlan0', dbus_interface=NM, timeout=TIMEOUT)
      return self.bus.get_object(NM, wlan_path)
  
    def get_sim_info(self):
      modem = self.get_modem()
      sim_path = modem.Get(MM_MODEM, 'Sim', dbus_interface=DBUS_PROPS, timeout=TIMEOUT)
  
      if sim_path == "/":
        return {
          'sim_id': '',
          'mcc_mnc': None,
          'network_type': ["Unknown"],
          'sim_state': ["ABSENT"],
          'data_connected': False
        }
      else:
        sim = self.bus.get_object(MM, sim_path)
        return {
          'sim_id': str(sim.Get(MM_SIM, 'SimIdentifier', dbus_interface=DBUS_PROPS, timeout=TIMEOUT)),
          'mcc_mnc': str(sim.Get(MM_SIM, 'OperatorIdentifier', dbus_interface=DBUS_PROPS, timeout=TIMEOUT)),
          'network_type': ["Unknown"],
          'sim_state': ["READY"],
          'data_connected': modem.Get(MM_MODEM, 'State', dbus_interface=DBUS_PROPS, timeout=TIMEOUT) == MM_MODEM_STATE_CONNECTED,
        }
  
    def get_subscriber_info(self):
      return ""
  
    def get_imei(self, slot):
      if slot != 0:
        return ""
  
      return str(self.get_modem().Get(MM_MODEM, 'EquipmentIdentifier', dbus_interface=DBUS_PROPS, timeout=TIMEOUT))
  
    def get_network_info(self):
      modem = self.get_modem()
      try:
        info = modem.Command("AT+QNWINFO", int(TIMEOUT * 1000), dbus_interface=MM_MODEM, timeout=TIMEOUT)
        extra = modem.Command('AT+QENG="servingcell"', int(TIMEOUT * 1000), dbus_interface=MM_MODEM, timeout=TIMEOUT)
      except Exception:
        return None
  
      if info and info.startswith('+QNWINFO: '):
        info = info.replace('+QNWINFO: ', '').replace('"', '').split(',')
        extra = "" if extra is None else extra.replace('+QENG: "servingcell",', '').replace('"', '')
  
        if len(info) != 4:
          return None
  
        technology, operator, band, channel = info 
  
        return({
          'technology': technology,
          'operator': operator,
          'band': band,
          'channel': int(channel),
          'extra': extra,
        })
      else:
        return None
  
    def parse_strength(self, percentage):
        if percentage < 25:
          return NetworkStrength.poor
        elif percentage < 50:
          return NetworkStrength.moderate
        elif percentage < 75:
          return NetworkStrength.good
        else:
          return NetworkStrength.great
  
    def get_network_strength(self, network_type):
      network_strength = NetworkStrength.unknown
  
      try:
        if network_type == NetworkType.none:
          pass
        elif network_type == NetworkType.wifi:
          wlan = self.get_wlan()
          active_ap_path = wlan.Get(NM_DEV_WL, 'ActiveAccessPoint', dbus_interface=DBUS_PROPS, timeout=TIMEOUT)
          if active_ap_path != "/":
            active_ap = self.bus.get_object(NM, active_ap_path)
            strength = int(active_ap.Get(NM_AP, 'Strength', dbus_interface=DBUS_PROPS, timeout=TIMEOUT))
            network_strength = self.parse_strength(strength)
        else:  # Cellular
          modem = self.get_modem()
          strength = int(modem.Get(MM_MODEM, 'SignalQuality', dbus_interface=DBUS_PROPS, timeout=TIMEOUT)[0])
          network_strength = self.parse_strength(strength)
      except Exception:
        pass
  
      return network_strength
  
    # We don't have a battery, so let's use some sane constants
    def get_battery_capacity(self):
      return 100
  
    def get_battery_status(self):
      return ""
  
    def get_battery_current(self):
      return 0
  
    def get_battery_voltage(self):
      return 0
  
    def get_battery_charging(self):
      return True
  
    def set_battery_charging(self, on):
      pass
  
    def get_usb_present(self):
      # Not sure if relevant on tici, but the file exists
      return self.read_param_file("/sys/class/power_supply/usb/present", lambda x: bool(int(x)), False)
  
    def get_current_power_draw(self):
      return (self.read_param_file("/sys/class/hwmon/hwmon1/power1_input", int) / 1e6)
  
    def shutdown(self):
      # Note that for this to work and have the device stay powered off, the panda needs to be in UsbPowerMode::CLIENT!
      os.system("sudo poweroff")
  
    def get_thermal_config(self):
      return ThermalConfig(cpu=((1, 2, 3, 4, 5, 6, 7, 8), 1000), gpu=((48,49), 1000), mem=(15, 1000), bat=(None, 1), ambient=(65, 1000))
  
    def set_screen_brightness(self, percentage):
      try:
        with open("/sys/class/backlight/panel0-backlight/brightness", "w") as f:
          f.write(str(int(percentage * 10.23)))
      except Exception:
        pass
  
    def set_power_save(self, enabled):
      # amplifier, 100mW at idle
      write_amplifier_reg(0x51, 0b0 if enabled else 0b1, 7, 0b10000000)
  
      # offline big cluster, leave core 4 online for boardd
      for i in range(5, 8):
        # TODO: fix permissions with udev
        val = "0" if enabled else "1"
        os.system(f"sudo su -c 'echo {val} > /sys/devices/system/cpu/cpu{i}/online'")
  
  if __name__ == "__main__":
    import sys
    Tici().set_power_save(bool(int(sys.argv[1])))
  