CHIRP

# Copyright 2021 Jim Unroe <rock.unroe@gmail.com>

#

# This program is free software: you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation, either version 2 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program.  If not, see <http://www.gnu.org/licenses/>.

import time

import os

import struct

import logging

from chirp import (

    bitwise,

    chirp_common,

    directory,

    errors,

    memmap,

    util,

)

from chirp.settings import (

    RadioSetting,

    RadioSettingGroup,

    RadioSettings,

    RadioSettingValueBoolean,

    RadioSettingValueFloat,

    RadioSettingValueInteger,

    RadioSettingValueList,

    RadioSettingValueString,

)

LOG = logging.getLogger(__name__)

MEM_FORMAT = """

#seekto 0x0000;

struct {

  lbcd rxfreq[4];       // RX Frequency

  lbcd txfreq[4];       // TX Frequency

  u8 rx_tmode;          // RX Tone Mode

  u8 rx_tone;           // PL/DPL Decode

  u8 tx_tmode;          // TX Tone Mode

  u8 tx_tone;           // PL/DPL Encode

  u8 unknown1:3,        //

     skip:1,            // Scan Add: 1 = Skip, 0 = Scan

     unknown2:2,

     isnarrow:1,        // W/N: 1 = Narrow, 0 = Wide

     lowpower:1;        // TX Power: 1 = Low, 0 = High

  u8 unknown3[3];       //

} memory[%d];

#seekto 0x0630;

struct {

  u8 squelch;           // SQL

  u8 vox;               // Vox Lv

  u8 tot;               // TOT

  u8 unk1:3,            //

     ste:1,             // Tail Clear

     bcl:1,             // BCL

     save:1,            // Save

     tdr:1,             // TDR

     beep:1;            // Beep

  u8 voice;             // Voice

  u8 abr;               // Back Light

  u8 ring;              // Ring

  u8 unknown;           //

  u8 mra;               // MR Channel A

  u8 mrb;               // MR Channel B

  u8 disp_ab;           // Display A/B Selected

  ul16 fmcur;           // Broadcast FM station

  u8 workmode;          // Work Mode

  u8 wx;                // NOAA WX ch#

  u8 area;              // Area Selected

} settings;

#seekto 0x0D00;

struct {

  char name[6];

  u8 unknown1[2];

} names[%d];

"""

CMD_ACK = "\x06"

TONES = chirp_common.TONES

TMODES = ["", "Tone", "DTCS", "DTCS"]

AB_LIST = ["A", "B"]

ABR_LIST = ["OFF", "ON", "Key"]

AREA_LIST = ["China", "Japan", "Korea", "Malaysia", "American",

             "Australia", "Iran", "Taiwan", "Europe", "Russia"]

MDF_LIST = ["Frequency", "Channel #", "Name"]

RING_LIST = ["OFF"] + ["%s" % x for x in range(1, 11)]

TOT_LIST = ["OFF"] + ["%s seconds" % x for x in range(30, 210, 30)]

TOT2_LIST = TOT_LIST[1:]

VOICE_LIST = ["Off", "Chinese", "English"]

VOX_LIST = ["OFF"] + ["%s" % x for x in range(1, 6)]

WORKMODE_LIST = ["General", "PMR"]

WX_LIST = ["CH01 - 162.550",

           "CH02 - 162.400",

           "CH03 - 162.475",

           "CH04 - 162.425",

           "CH05 - 162.450",

           "CH06 - 162.500",

           "CH07 - 162.525"

           ]

SETTING_LISTS = {

    "ab": AB_LIST,

    "abr": ABR_LIST,

    "area": AREA_LIST,

    "mdf": MDF_LIST,

    "ring": RING_LIST,

    "tot": TOT_LIST,

    "tot": TOT2_LIST,

    "voice": VOICE_LIST,

    "vox": VOX_LIST,

    "workmode": WORKMODE_LIST,

    "wx": WX_LIST,

    }

FRS_FREQS1 = [462.5625, 462.5875, 462.6125, 462.6375, 462.6625,

              462.6875, 462.7125]

FRS_FREQS2 = [467.5625, 467.5875, 467.6125, 467.6375, 467.6625,

              467.6875, 467.7125]

FRS_FREQS3 = [462.5500, 462.5750, 462.6000, 462.6250, 462.6500,

              462.6750, 462.7000, 462.7250]

FRS_FREQS = FRS_FREQS1 + FRS_FREQS2 + FRS_FREQS3

def _enter_programming_mode(radio):

    serial = radio.pipe

    exito = False

    for i in range(0, 5):

        serial.write(radio._magic)

        ack = serial.read(1)

        try:

            if ack == CMD_ACK:

                exito = True

                break

        except:

            LOG.debug("Attempt #%s, failed, trying again" % i)

            pass

    # check if we had EXITO

    if exito is False:

        _exit_programming_mode(radio)

        msg = "The radio did not accept program mode after five tries.\n"

        msg += "Check you interface cable and power cycle your radio."

        raise errors.RadioError(msg)

    try:

        serial.write("\x02")

        ident = serial.read(len(radio._fingerprint))

    except:

        _exit_programming_mode(radio)

        raise errors.RadioError("Error communicating with radio")

    if not ident == radio._fingerprint:

        _exit_programming_mode(radio)

        LOG.debug(util.hexprint(ident))

        raise errors.RadioError("Radio returned unknown identification string")

    try:

        serial.write(CMD_ACK)

        ack = serial.read(1)

    except:

        _exit_programming_mode(radio)

        raise errors.RadioError("Error communicating with radio")

    if ack != CMD_ACK:

        _exit_programming_mode(radio)

        raise errors.RadioError("Radio refused to enter programming mode")

def _exit_programming_mode(radio):

    serial = radio.pipe

    try:

        serial.write("E")

    except:

        raise errors.RadioError("Radio refused to exit programming mode")

def _read_block(radio, block_addr, block_size):

    serial = radio.pipe

    cmd = struct.pack(">cHb", 'R', block_addr, block_size)

    expectedresponse = "W" + cmd[1:]

    LOG.debug("Reading block %04x..." % (block_addr))

    try:

        serial.write(cmd)

        response = serial.read(4 + block_size)

        if response[:4] != expectedresponse:

            raise Exception("Error reading block %04x." % (block_addr))

        block_data = response[4:]

        serial.write(CMD_ACK)

        ack = serial.read(1)

    except:

        _exit_programming_mode(radio)

        raise errors.RadioError("Failed to read block at %04x" % block_addr)

    if ack != CMD_ACK:

        _exit_programming_mode(radio)

        raise Exception("No ACK reading block %04x." % (block_addr))

    return block_data

def _write_block(radio, block_addr, block_size):

    serial = radio.pipe

    cmd = struct.pack(">cHb", 'W', block_addr, block_size)

    data = radio.get_mmap()[block_addr:block_addr + block_size]

    LOG.debug("Writing Data:")

    LOG.debug(util.hexprint(cmd + data))

    try:

        serial.write(cmd + data)

        if serial.read(1) != CMD_ACK:

            raise Exception("No ACK")

    except:

        _exit_programming_mode(radio)

        raise errors.RadioError("Failed to send block "

                                "to radio at %04x" % block_addr)

def do_download(radio):

    LOG.debug("download")

    _enter_programming_mode(radio)

    data = ""

    status = chirp_common.Status()

    status.msg = "Cloning from radio"

    status.cur = 0

    status.max = radio._memsize

    for addr in range(0, radio._memsize, radio.BLOCK_SIZE):

        status.cur = addr + radio.BLOCK_SIZE

        radio.status_fn(status)

        block = _read_block(radio, addr, radio.BLOCK_SIZE)

        data += block

        LOG.debug("Address: %04x" % addr)

        LOG.debug(util.hexprint(block))

    _exit_programming_mode(radio)

    return memmap.MemoryMap(data)

def do_upload(radio):

    status = chirp_common.Status()

    status.msg = "Uploading to radio"

    _enter_programming_mode(radio)

    status.cur = 0

    status.max = radio._memsize

    for start_addr, end_addr in radio._ranges:

        for addr in range(start_addr, end_addr, radio.BLOCK_SIZE_UP):

            status.cur = addr + radio.BLOCK_SIZE_UP

            radio.status_fn(status)

            _write_block(radio, addr, radio.BLOCK_SIZE_UP)

    _exit_programming_mode(radio)

class BFT8Radio(chirp_common.CloneModeRadio):

    """Baofeng BF-T8"""

    VENDOR = "Baofeng"

    MODEL = "BF-T8"

    BAUD_RATE = 9600

    BLOCK_SIZE = BLOCK_SIZE_UP = 0x10

    ODD_SPLIT = True

    HAS_NAMES = False

    NAME_LENGTH = 0

    VALID_CHARS = []

    CH_OFFSET = False

    SKIP_VALUES = []

    DTCS_CODES = sorted(chirp_common.DTCS_CODES)

    POWER_LEVELS = [chirp_common.PowerLevel("High", watts=2.00),

                    chirp_common.PowerLevel("Low", watts=0.50)]

    VALID_BANDS = [(400000000, 470000000)]

    _magic = "\x02" + "PROGRAM"

    _fingerprint = "\x2E" + "BF-T6" + "\x2E"

    _upper = 99

    _mem_params = (_upper,  # number of channels

                   _upper   # number of names

                   )

    _frs = False

    _ranges = [

               (0x0000, 0x0B60),

              ]

    _memsize = 0x0B60

    def get_features(self):

        rf = chirp_common.RadioFeatures()

        rf.has_settings = True

        rf.has_bank = False

        rf.has_ctone = True

        rf.has_cross = True

        rf.has_rx_dtcs = True

        rf.has_tuning_step = False

        rf.has_name = self.HAS_NAMES

        rf.can_odd_split = self.ODD_SPLIT

        rf.valid_name_length = self.NAME_LENGTH

        rf.valid_characters = self.VALID_CHARS

        rf.valid_skips = self.SKIP_VALUES

        rf.valid_tmodes = ["", "Tone", "TSQL", "DTCS", "Cross"]

        rf.valid_cross_modes = ["Tone->Tone", "Tone->DTCS", "DTCS->Tone",

                                "->Tone", "->DTCS", "DTCS->", "DTCS->DTCS"]

        rf.valid_dtcs_codes = self.DTCS_CODES

        rf.valid_power_levels = self.POWER_LEVELS

        rf.valid_duplexes = ["", "-", "+", "split", "off"]

        rf.valid_modes = ["FM", "NFM"]  # 25 kHz, 12.5 KHz.

        rf.memory_bounds = (1, self._upper)

        rf.valid_tuning_steps = [2.5, 5., 6.25, 10., 12.5, 25.]

        rf.valid_bands = self.VALID_BANDS

        return rf

    def process_mmap(self):

        self._memobj = bitwise.parse(MEM_FORMAT % self._mem_params, self._mmap)

    def validate_memory(self, mem):

        msgs = ""

        msgs = chirp_common.CloneModeRadio.validate_memory(self, mem)

        _msg_freq = 'Memory location cannot change frequency'

        _msg_simplex = 'Memory location only supports Duplex:(None)'

        _msg_nfm = 'Memory location only supports Mode: NFM'

        _msg_txp = 'Memory location only supports Power: Low'

        # FRS only models

        if self._frs:

            # range of memories with values set by FCC rules

            if mem.freq != int(FRS_FREQS[mem.number - 1] * 1000000):

                # warn user can't change frequency

                msgs.append(chirp_common.ValidationError(_msg_freq))

            # channels 1 - 22 are simplex only

            if str(mem.duplex) != "":

                # warn user can't change duplex

                msgs.append(chirp_common.ValidationError(_msg_simplex))

            # channels 1 - 22 are NFM only

            if str(mem.mode) != "NFM":

                # warn user can't change mode

                msgs.append(chirp_common.ValidationError(_msg_nfm))

            # channels 8 - 14 are low power only

            if mem.number >= 8 and mem.number <= 14:

                if str(mem.power) != "Low":

                    # warn user can't change power

                    msgs.append(chirp_common.ValidationError(_msg_txp))

        return msgs

    def sync_in(self):

        """Download from radio"""

        try:

            data = do_download(self)

        except errors.RadioError:

            # Pass through any real errors we raise

            raise

        except:

            # If anything unexpected happens, make sure we raise

            # a RadioError and log the problem

            LOG.exception('Unexpected error during download')

            raise errors.RadioError('Unexpected error communicating '

                                    'with the radio')

        self._mmap = data

        self.process_mmap()

    def sync_out(self):

        """Upload to radio"""

        try:

            do_upload(self)

        except:

            # If anything unexpected happens, make sure we raise

            # a RadioError and log the problem

            LOG.exception('Unexpected error during upload')

            raise errors.RadioError('Unexpected error communicating '

                                    'with the radio')

    def get_raw_memory(self, number):

        return repr(self._memobj.memory[number - 1])

    def _get_tone(self, mem, _mem):

        rx_tone = tx_tone = None

        tx_tmode = TMODES[_mem.tx_tmode]

        rx_tmode = TMODES[_mem.rx_tmode]

        if tx_tmode == "Tone":

            tx_tone = TONES[_mem.tx_tone]

        elif tx_tmode == "DTCS":

            tx_tone = self.DTCS_CODES[_mem.tx_tone]

        if rx_tmode == "Tone":

            rx_tone = TONES[_mem.rx_tone]

        elif rx_tmode == "DTCS":

            rx_tone = self.DTCS_CODES[_mem.rx_tone]

        tx_pol = _mem.tx_tmode == 0x03 and "R" or "N"

        rx_pol = _mem.rx_tmode == 0x03 and "R" or "N"

        chirp_common.split_tone_decode(mem, (tx_tmode, tx_tone, tx_pol),

                                       (rx_tmode, rx_tone, rx_pol))

    def _get_mem(self, number):

        return self._memobj.memory[number - 1]

    def _get_nam(self, number):

        return self._memobj.names[number - 1]

    def get_memory(self, number):

        _mem = self._get_mem(number)

        if self.HAS_NAMES:

            _nam = self._get_nam(number)

        mem = chirp_common.Memory()

        mem.number = number

        mem.freq = int(_mem.rxfreq) * 10

        # We'll consider any blank (i.e. 0MHz frequency) to be empty

        if mem.freq == 0:

            mem.empty = True

            return mem

        if _mem.rxfreq.get_raw() == "\xFF\xFF\xFF\xFF":

            mem.freq = 0

            mem.empty = True

            return mem

        if _mem.get_raw() == ("\xFF" * 16):

            LOG.debug("Initializing empty memory")

            _mem.set_raw("\x00" * 13 + "\xFF" * 3)

        if int(_mem.rxfreq) == int(_mem.txfreq):

            mem.duplex = ""

            mem.offset = 0

        else:

            mem.duplex = int(_mem.rxfreq) > int(_mem.txfreq) and "-" or "+"

            mem.offset = abs(int(_mem.rxfreq) - int(_mem.txfreq)) * 10

        # wide/narrow

        mem.mode = _mem.isnarrow and "NFM" or "FM"

        mem.skip = _mem.skip and "S" or ""

        if self.HAS_NAMES:

            for char in _nam.name:

                if str(char) == "\xFF":

                    char = " "  # The OEM software may have 0xFF mid-name

                mem.name += str(char)

            mem.name = mem.name.rstrip()

        # tone data

        self._get_tone(mem, _mem)

        # tx power

        levels = self.POWER_LEVELS

        try:

            mem.power = levels[_mem.lowpower]

        except IndexError:

            LOG.error("Radio reported invalid power level %s (in %s)" %

                      (_mem.lowpower, levels))

            mem.power = levels[0]

        if mem.number <= 22 and self._frs:

            FRS_IMMUTABLE = ["freq", "duplex", "offset", "mode"]

            if mem.number >= 8 and mem.number <= 14:

                mem.immutable = FRS_IMMUTABLE + ["power"]

            else:

                mem.immutable = FRS_IMMUTABLE

        return mem

    def _set_tone(self, mem, _mem):

        ((txmode, txtone, txpol),

         (rxmode, rxtone, rxpol)) = chirp_common.split_tone_encode(mem)

        _mem.tx_tmode = TMODES.index(txmode)

        _mem.rx_tmode = TMODES.index(rxmode)

        if txmode == "Tone":

            _mem.tx_tone = TONES.index(txtone)

        elif txmode == "DTCS":

            _mem.tx_tmode = txpol == "R" and 0x03 or 0x02

            _mem.tx_tone = self.DTCS_CODES.index(txtone)

        if rxmode == "Tone":

            _mem.rx_tone = TONES.index(rxtone)

        elif rxmode == "DTCS":

            _mem.rx_tmode = rxpol == "R" and 0x03 or 0x02

            _mem.rx_tone = self.DTCS_CODES.index(rxtone)

    def _set_mem(self, number):

        return self._memobj.memory[number - 1]

    def _set_nam(self, number):

        return self._memobj.names[number - 1]

    def set_memory(self, mem):

        _mem = self._set_mem(mem.number)

        if self.HAS_NAMES:

            _nam = self._set_nam(mem.number)

        # if empty memmory

        if mem.empty:

            if self.HAS_NAMES:

                for i in range(0, self.NAME_LENGTH):

                    _nam.name[i].set_raw("\xFF")

            if self._frs:

                if mem.number <= 22:

                    _mem.set_raw("\xFF" * 8 + "\x00" * 5 + "\xFF" * 3)

                    FRS_FREQ = int(FRS_FREQS[mem.number - 1] * 100000)

                    _mem.rxfreq = _mem.txfreq = FRS_FREQ

                    _mem.isnarrow = True

                    if mem.number >= 8 and mem.number <= 14:

                        _mem.lowpower = True

                    else:

                        _mem.lowpower = False

                else:

                    _mem.set_raw("\xff" * 16)

            else:

                _mem.set_raw("\xFF" * 8 + "\x00" * 4 + "\x03" + "\xFF" * 3)

            return mem

        _mem.set_raw("\x00" * 13 + "\xFF" * 3)

        # frequency

        _mem.rxfreq = mem.freq / 10

        if mem.duplex == "off":

            for i in range(0, 4):

                _mem.txfreq[i].set_raw("\xFF")

        elif mem.duplex == "split":

            _mem.txfreq = mem.offset / 10

        elif mem.duplex == "+":

            _mem.txfreq = (mem.freq + mem.offset) / 10

        elif mem.duplex == "-":

            _mem.txfreq = (mem.freq - mem.offset) / 10

        else:

            _mem.txfreq = mem.freq / 10

        # wide/narrow

        _mem.isnarrow = mem.mode == "NFM"

        _mem.skip = mem.skip == "S"

        if self.HAS_NAMES:

            for i in range(self.NAME_LENGTH):

                try:

                    _nam.name[i] = mem.name[i]

                except IndexError:

                    _nam.name[i] = "\xFF"

        # tone data

        self._set_tone(mem, _mem)

        # tx power

        if mem.power:

            _mem.lowpower = self.POWER_LEVELS.index(mem.power)

        else:

            _mem.lowpower = 0

        return mem

    def get_settings(self):

        _settings = self._memobj.settings

        basic = RadioSettingGroup("basic", "Basic Settings")

        top = RadioSettings(basic)

        # Menu 03

        rs = RadioSettingValueInteger(0, 9, _settings.squelch)

        rset = RadioSetting("squelch", "Squelch Level", rs)

        basic.append(rset)

        model_list = ["RB27B", ]

        if self.MODEL in model_list:

            # Menu 09 (RB27x)

            rs = RadioSettingValueList(TOT2_LIST, TOT2_LIST[_settings.tot])

        else:

            # Menu 11

            rs = RadioSettingValueList(TOT_LIST, TOT_LIST[_settings.tot])

        rset = RadioSetting("tot", "Time-out timer", rs)

        basic.append(rset)

        # Menu 06

        rs = RadioSettingValueList(VOX_LIST, VOX_LIST[_settings.vox])

        rset = RadioSetting("vox", "VOX Level", rs)

        basic.append(rset)

        # Menu 15 (BF-T8) / 12 (RB-27/RB627)

        rs = RadioSettingValueList(VOICE_LIST, VOICE_LIST[_settings.voice])

        rset = RadioSetting("voice", "Voice", rs)

        basic.append(rset)

        # Menu 12

        rs = RadioSettingValueBoolean(_settings.bcl)

        rset = RadioSetting("bcl", "Busy Channel Lockout", rs)

        basic.append(rset)

        # Menu 10 / 08 (RB27/RB627)

        rs = RadioSettingValueBoolean(_settings.save)

        rset = RadioSetting("save", "Battery Saver", rs)

        basic.append(rset)

        # Menu 08 / 07 (RB-27/RB627)

        rs = RadioSettingValueBoolean(_settings.tdr)

        rset = RadioSetting("tdr", "Dual Watch", rs)

        basic.append(rset)

        # Menu 05

        rs = RadioSettingValueBoolean(_settings.beep)

        rset = RadioSetting("beep", "Beep", rs)

        basic.append(rset)

        # Menu 04

        rs = RadioSettingValueList(ABR_LIST, ABR_LIST[_settings.abr])

        rset = RadioSetting("abr", "Back Light", rs)

        basic.append(rset)

        # Menu 13 / 11 (RB-27/RB627)

        rs = RadioSettingValueList(RING_LIST, RING_LIST[_settings.ring])

        rset = RadioSetting("ring", "Ring", rs)

        basic.append(rset)

        rs = RadioSettingValueBoolean(not _settings.ste)

        rset = RadioSetting("ste", "Squelch Tail Eliminate", rs)

        basic.append(rset)

        #

        if self.CH_OFFSET:

            rs = RadioSettingValueInteger(1, self._upper, _settings.mra + 1)

        else:

            rs = RadioSettingValueInteger(1, self._upper, _settings.mra)

        rset = RadioSetting("mra", "MR A Channel #", rs)

        basic.append(rset)

        if self.CH_OFFSET:

            rs = RadioSettingValueInteger(1, self._upper, _settings.mrb + 1)

        else:

            rs = RadioSettingValueInteger(1, self._upper, _settings.mrb)

        rset = RadioSetting("mrb", "MR B Channel #", rs)

        basic.append(rset)

        rs = RadioSettingValueList(AB_LIST, AB_LIST[_settings.disp_ab])

        rset = RadioSetting("disp_ab", "Selected Display Line", rs)

        basic.append(rset)

        rs = RadioSettingValueList(WX_LIST, WX_LIST[_settings.wx])

        rset = RadioSetting("wx", "NOAA WX Radio", rs)

        basic.append(rset)

        def myset_freq(setting, obj, atrb, mult):

            """ Callback to set frequency by applying multiplier"""

            value = int(float(str(setting.value)) * mult)

            setattr(obj, atrb, value)

            return

        # FM Broadcast Settings

        val = _settings.fmcur

        val = val / 10.0

        val_low = 76.0

        if val < val_low or val > 108.0:

            val = 90.4

        rx = RadioSettingValueFloat(val_low, 108.0, val, 0.1, 1)

        rset = RadioSetting("settings.fmcur", "Broadcast FM Radio (MHz)", rx)

        rset.set_apply_callback(myset_freq, _settings, "fmcur", 10)

        basic.append(rset)

        model_list = ["BF-T8", "BF-U9", "AR-8"]

        if self.MODEL in model_list:

            rs = RadioSettingValueList(WORKMODE_LIST,

                                       WORKMODE_LIST[_settings.workmode])

            rset = RadioSetting("workmode", "Work Mode", rs)

            basic.append(rset)

            rs = RadioSettingValueList(AREA_LIST, AREA_LIST[_settings.area])

            rs.set_mutable(False)

            rset = RadioSetting("area", "Area", rs)

            basic.append(rset)

        return top

    def set_settings(self, settings):

        for element in settings:

            if not isinstance(element, RadioSetting):

                self.set_settings(element)

                continue

            else:

                try:

                    if "." in element.get_name():

                        bits = element.get_name().split(".")

                        obj = self._memobj

                        for bit in bits[:-1]:

                            obj = getattr(obj, bit)

                        setting = bits[-1]

                    else:

                        obj = self._memobj.settings

                        setting = element.get_name()

                    if element.has_apply_callback():

                        LOG.debug("Using apply callback")

                        element.run_apply_callback()

                    elif setting == "mra" and self.CH_OFFSET:

                        setattr(obj, setting, int(element.value) - 1)

                    elif setting == "mrb" and self.CH_OFFSET:

                        setattr(obj, setting, int(element.value) - 1)

                    elif setting == "ste":

                        setattr(obj, setting, not int(element.value))

                    elif element.value.get_mutable():

                        LOG.debug("Setting %s = %s" % (setting, element.value))

                        setattr(obj, setting, element.value)

                except Exception, e:

                    LOG.debug(element.get_name())

                    raise

    @classmethod

    def match_model(cls, filedata, filename):

        # This radio has always been post-metadata, so never do

        # old-school detection

        return False

class BFU9Alias(chirp_common.Alias):

    VENDOR = "Baofeng"

    MODEL = "BF-U9"

class AR8Alias(chirp_common.Alias):

    VENDOR = "Arcshell"

    MODEL = "AR-8"

@directory.register

class BaofengBFT8Generic(BFT8Radio):

    ALIASES = [BFU9Alias, AR8Alias, ]

@directory.register

class RetevisRT16(BFT8Radio):

    VENDOR = "Retevis"

    MODEL = "RT16"

    _upper = 22

    _frs = True

@directory.register

class RetevisRT27B(BFT8Radio):

    VENDOR = "Retevis"

    MODEL = "RB27B"

    DTCS_CODES = sorted(chirp_common.DTCS_CODES + [645])

    HAS_NAMES = True

    NAME_LENGTH = 6

    VALID_CHARS = chirp_common.CHARSET_UPPER_NUMERIC + "-"

    CH_OFFSET = True

    SKIP_VALUES = ["", "S"]

    POWER_LEVELS = [chirp_common.PowerLevel("High", watts=2.00),

                    chirp_common.PowerLevel("Low", watts=0.50)]

    VALID_BANDS = [(400000000, 520000000)]

    _upper = 22

    _frs = True

    _ranges = [

               (0x0000, 0x0640),

               (0x0D00, 0x1040),

              ]

    _memsize = 0x1040