CHIRP

# Copyright 2013 Dan Smith <dsmith@danplanet.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/>.

# This driver was derived from the:

# Quansheng TG-UV2 Utility by Mike Nix <mnix@wanm.com.au>

# (So thanks Mike!)

import struct

import logging

import serial

from chirp import chirp_common, directory, bitwise, memmap, errors, util

from chirp.settings import RadioSetting, RadioSettingGroup, \

                RadioSettingValueBoolean, RadioSettingValueList, \

                RadioSettingValueInteger, RadioSettingValueFloat, \

                RadioSettingValueMap, RadioSettings

LOG = logging.getLogger(__name__)

mem_format = """

struct memory {

  bbcd freq[4];

  bbcd offset[4];

  u8 rxtone;

  u8 txtone;

  u8 unknown1:2,

     txtmode:2,

     unknown2:2,

     rxtmode:2;

  u8 duplex;

  u8 unknown3:3,

     isnarrow:1,

     unknown4:2,

     not_scramble:1,

     not_revfreq:1;

  u8 flag3;

  u8 step;

  u8 power;

};

struct bandflag {

    u8 scanadd:1,

        unknown1:3,

        band:4;

};

struct tguv2_config {

    u8 unknown1;

    u8 squelch;

    u8 time_out_timer;

    u8 priority_channel;

    u8 unknown2:7,

        keyunlocked:1;

    u8 busy_lockout;

    u8 vox;

    u8 unknown3;

    u8 beep_tone_disabled;

    u8 display;

    u8 step;

    u8 unknown4;

    u8 unknown5;

    u8 rxmode;

    u8 unknown6:7,

        not_end_tone_elim:1;

    u8 vfo_mode;

};

struct vfo {

    u8 current;

    u8 chan;

    u8 memno;

};

struct name {

  u8 name[6];

  u8 unknown1[10];

};

#seekto 0x0000;

char ident[32];

u8 blank[16];

struct memory channels[200];

struct memory bands[5];

#seekto 0x0D30;

struct bandflag bandflags[200];

#seekto 0x0E30;

struct tguv2_config settings;

struct vfo vfos[2];

u8 unk5;

u8 reserved2[9];

u8 band_restrict;

u8 txen350390;

#seekto 0x0F30;

struct name names[200];

"""

def do_ident(radio):

    radio.pipe.timeout = 3

    radio.pipe.stopbits = serial.STOPBITS_TWO

    radio.pipe.write(b"\x02PnOGdAM")

    for x in range(10):

        ack = radio.pipe.read(1)

        if ack == b'\x06':

            break

    else:

        raise errors.RadioError("Radio did not ack programming mode")

    radio.pipe.write(b"\x4D\x02")

    ident = radio.pipe.read(8)

    LOG.debug(util.hexprint(ident))

    if not ident.startswith(b'P5555'):

        raise errors.RadioError("Unsupported model")

    radio.pipe.write(b"\x06")

    ack = radio.pipe.read(1)

    if ack != b"\x06":

        raise errors.RadioError("Radio did not ack ident")

def do_status(radio, direction, addr):

    status = chirp_common.Status()

    status.msg = "Cloning %s radio" % direction

    status.cur = addr

    status.max = 0x2000

    radio.status_fn(status)

def do_download(radio):

    do_ident(radio)

    data = b"TG-UV2+ Radio Program Data v1.0\x00"

    data += (b"\x00" * 16)

    firstack = None

    for i in range(0, 0x2000, 8):

        frame = struct.pack(">cHB", b"R", i, 8)

        radio.pipe.write(frame)

        result = radio.pipe.read(12)

        if not (result[0:1] == b"W" and frame[1:4] == result[1:4]):

            LOG.debug(util.hexprint(result))

            raise errors.RadioError("Invalid response for address 0x%04x" % i)

        radio.pipe.write(b"\x06")

        ack = radio.pipe.read(1)

        if not firstack:

            firstack = ack

        else:

            if not ack == firstack:

                LOG.debug("first ack: %s ack received: %s",

                          util.hexprint(firstack), util.hexprint(ack))

                raise errors.RadioError("Unexpected response")

        data += result[4:]

        do_status(radio, "from", i)

    return memmap.MemoryMapBytes(data)

def do_upload(radio):

    do_ident(radio)

    data = radio._mmap[0x0030:]

    for i in range(0, 0x2000, 8):

        frame = struct.pack(">cHB", b"W", i, 8)

        frame += data[i:i + 8]

        radio.pipe.write(frame)

        ack = radio.pipe.read(1)

        if ack != b"\x06":

            LOG.debug("Radio NAK'd block at address 0x%04x" % i)

            raise errors.RadioError(

                    "Radio NAK'd block at address 0x%04x" % i)

        LOG.debug("Radio ACK'd block at address 0x%04x" % i)

        do_status(radio, "to", i)

DUPLEX = ["", "+", "-"]

TGUV2P_STEPS = [5, 6.25, 10, 12.5, 15, 20, 25, 30, 50, 100]

CHARSET = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_|* +-"

POWER_LEVELS = [chirp_common.PowerLevel("High", watts=10),

                chirp_common.PowerLevel("Med", watts=5),

                chirp_common.PowerLevel("Low", watts=1)]

POWER_LEVELS_STR = ["High", "Med", "Low"]

VALID_BANDS = [(88000000, 108000000),

               (136000000, 174000000),

               (350000000, 390000000),

               (400000000, 470000000),

               (470000000, 520000000)]

@directory.register

class QuanshengTGUV2P(chirp_common.CloneModeRadio,

                      chirp_common.ExperimentalRadio):

    """Quansheng TG-UV2+"""

    VENDOR = "Quansheng"

    MODEL = "TG-UV2+"

    BAUD_RATE = 9600

    NEEDS_COMPAT_SERIAL = False

    _memsize = 0x2000

    @classmethod

    def get_prompts(cls):

        rp = chirp_common.RadioPrompts()

        rp.experimental = \

            ('Experimental version for TG-UV2/2+ radios '

             'Proceed at your own risk!')

        rp.pre_download = _(

            "1. Turn radio off.\n"

            "2. Connect cable to mic/spkr connector.\n"

            "3. Make sure connector is firmly connected.\n"

            "4. Turn radio on.\n"

            "5. Ensure that the radio is tuned to channel with no"

            " activity.\n"

            "6. Click OK to download image from device.\n")

        rp.pre_upload = _(

            "1. Turn radio off.\n"

            "2. Connect cable to mic/spkr connector.\n"

            "3. Make sure connector is firmly connected.\n"

            "4. Turn radio on.\n"

            "5. Ensure that the radio is tuned to channel with no"

            " activity.\n"

            "6. Click OK to upload image to device.\n")

        return rp

    def get_features(self):

        rf = chirp_common.RadioFeatures()

        rf.has_settings = True

        rf.has_cross = True

        rf.has_rx_dtcs = True

        rf.has_dtcs_polarity = True

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

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

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

        rf.valid_duplexes = DUPLEX

        rf.can_odd_split = False

        rf.valid_skips = ["", "S"]

        rf.valid_characters = CHARSET

        rf.valid_name_length = 6

        rf.valid_tuning_steps = TGUV2P_STEPS

        rf.valid_bands = VALID_BANDS

        rf.valid_modes = ["FM", "NFM"]

        rf.valid_power_levels = POWER_LEVELS

        rf.has_ctone = True

        rf.has_bank = False

        rf.has_tuning_step = True

        rf.memory_bounds = (0, 199)

        return rf

    def sync_in(self):

        try:

            self._mmap = do_download(self)

        except errors.RadioError:

            raise

        except Exception as e:

            raise errors.RadioError("Failed to communicate with radio: %s" % e)

        self.process_mmap()

    def sync_out(self):

        try:

            do_upload(self)

        except errors.RadioError:

            raise

        except Exception as e:

            raise errors.RadioError("Failed to communicate with radio: %s" % e)

    def process_mmap(self):

        self._memobj = bitwise.parse(mem_format, self._mmap)

    def get_raw_memory(self, number):

        return repr(self._memobj.channels[number])

    def _decode_tone(self, _mem, which):

        def _get(field):

            return getattr(_mem, "%s%s" % (which, field))

        value = _get('tone')

        tmode = _get('tmode')

        if (value <= 104) and (tmode <= 3):

            if tmode == 0:

                mode = val = pol = None

            elif tmode == 1:

                mode = 'Tone'

                val = chirp_common.TONES[value]

                pol = None

            else:

                mode = 'DTCS'

                val = chirp_common.DTCS_CODES[value]

                pol = "N" if (tmode == 2) else "R"

        else:

            mode = val = pol = None

        return mode, val, pol

    def _encode_tone(self, _mem, which, mode, val, pol):

        def _set(field, value):

            setattr(_mem, "%s%s" % (which, field), value)

        if (mode == "Tone"):

            _set("tone", chirp_common.TONES.index(val))

            _set("tmode", 0x01)

        elif mode == "DTCS":

            _set("tone", chirp_common.DTCS_CODES.index(val))

            if pol == "N":

                _set("tmode", 0x02)

            else:

                _set("tmode", 0x03)

        else:

            _set("tone", 0)

            _set("tmode", 0)

    def _get_memobjs(self, number):

        if isinstance(number, str):

            return (getattr(self._memobj, number.lower()), None)

        else:

            return (self._memobj.channels[number],

                    self._memobj.bandflags[number],

                    self._memobj.names[number].name)

    def get_memory(self, number):

        _mem, _bf, _nam = self._get_memobjs(number)

        mem = chirp_common.Memory()

        if isinstance(number, str):

            mem.extd_number = number

        else:

            mem.number = number

        if (_mem.freq.get_raw()[0] == "\xFF") or (_bf.band == "\x0F"):

            mem.empty = True

            return mem

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

        if _mem.offset.get_raw()[0] == "\xFF":

            mem.offset = 0

        else:

            mem.offset = int(_mem.offset) * 10

        chirp_common.split_tone_decode(

            mem,

            self._decode_tone(_mem, "tx"),

            self._decode_tone(_mem, "rx"))

        if 'step' in _mem and _mem.step > len(TGUV2P_STEPS):

            _mem.step = 0x00

        mem.tuning_step = TGUV2P_STEPS[_mem.step]

        mem.duplex = DUPLEX[_mem.duplex]

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

        mem.skip = "" if bool(_bf.scanadd) else "S"

        mem.power = POWER_LEVELS[_mem.power]

        if _nam:

            for char in _nam:

                try:

                    mem.name += CHARSET[char]

                except IndexError:

                    break

            mem.name = mem.name.rstrip()

        mem.extra = RadioSettingGroup("Extra", "extra")

        rs = RadioSetting("not_scramble", "(not)SCRAMBLE",

                          RadioSettingValueBoolean(_mem.not_scramble))

        mem.extra.append(rs)

        rs = RadioSetting("not_revfreq", "(not)Reverse Duplex",

                          RadioSettingValueBoolean(_mem.not_revfreq))

        mem.extra.append(rs)

        return mem

    def set_memory(self, mem):

        _mem, _bf, _nam = self._get_memobjs(mem.number)

        _bf.set_raw("\xFF")

        if mem.empty:

            _mem.set_raw("\xFF" * 16)

            return

        _mem.set_raw("\x00" * 12 + "\xFF" * 2 + "\x00"*2)

        _bf.scanadd = int(mem.skip != "S")

        _bf.band = 0x0F

        for idx, ele in enumerate(VALID_BANDS):

            if mem.freq >= ele[0] and mem.freq <= ele[1]:

                _bf.band = idx

        _mem.freq = mem.freq / 10

        _mem.offset = mem.offset / 10

        tx, rx = chirp_common.split_tone_encode(mem)

        self._encode_tone(_mem, 'tx', *tx)

        self._encode_tone(_mem, 'rx', *rx)

        _mem.duplex = DUPLEX.index(mem.duplex)

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

        _mem.step = TGUV2P_STEPS.index(mem.tuning_step)

        if mem.power is None:

            _mem.power = 0

        else:

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

        if _nam:

            for i in range(0, 6):

                try:

                    _nam[i] = CHARSET.index(mem.name[i])

                except IndexError:

                    _nam[i] = 0xFF

        for setting in mem.extra:

            setattr(_mem, setting.get_name(), setting.value)

    def get_settings(self):

        _settings = self._memobj.settings

        _vfoa = self._memobj.vfos[0]

        _vfob = self._memobj.vfos[1]

        _bandsettings = self._memobj.bands

        cfg_grp = RadioSettingGroup("cfg_grp", "Configuration")

        vfoa_grp = RadioSettingGroup(

            "vfoa_grp", "VFO A Settings\n  (Current Status, Read Only)")

        vfob_grp = RadioSettingGroup(

            "vfob_grp", "VFO B Settings\n  (Current Status, Read Only)")

        group = RadioSettings(cfg_grp, vfoa_grp, vfob_grp)

        #

        # Configuration Settings

        #

        # TX time out timer:

        options = ["Off"] + ["%s min" % x for x in range(1, 10)]

        rs = RadioSetting("time_out_timer", "TX Time Out Timer",

                          RadioSettingValueList(

                              options, options[_settings.time_out_timer]))

        cfg_grp.append(rs)

        # Display mode

        options = ["Frequency", "Channel", "Name"]

        rs = RadioSetting("display", "Channel Display Mode",

                          RadioSettingValueList(

                              options, options[_settings.display]))

        cfg_grp.append(rs)

        # Squelch level

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

                          RadioSettingValueInteger(0, 9, _settings.squelch))

        cfg_grp.append(rs)

        # Vox level

        mem_vals = list(range(10))

        user_options = [str(x) for x in mem_vals]

        user_options[0] = "Off"

        options_map = list(zip(user_options, mem_vals))

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

                          RadioSettingValueMap(options_map, _settings.vox))

        cfg_grp.append(rs)

        # Keypad beep

        rs = RadioSetting("beep_tone_disabled", "Beep Prompt",

                          RadioSettingValueBoolean(

                               not _settings.beep_tone_disabled))

        cfg_grp.append(rs)

        # Dual watch/crossband

        options = ["Dual Watch", "CrossBand", "Normal"]

        if _settings.rxmode >= 2:

            _rxmode = 2

        else:

            _rxmode = _settings.rxmode

        rs = RadioSetting("rxmode", "Dual Watch/CrossBand Monitor",

                          RadioSettingValueList(

                            options, options[_rxmode]))

        cfg_grp.append(rs)

        # Busy channel lock

        rs = RadioSetting("busy_lockout", "Busy Channel Lock",

                          RadioSettingValueBoolean(

                             not _settings.busy_lockout))

        cfg_grp.append(rs)

        # Keypad lock

        rs = RadioSetting("keyunlocked", "Keypad Lock",

                          RadioSettingValueBoolean(

                              not _settings.keyunlocked))

        cfg_grp.append(rs)

        # Priority channel

        mem_vals = list(range(200))

        user_options = [str(x) for x in mem_vals]

        mem_vals.insert(0, 0xFF)

        user_options.insert(0, "Not Set")

        options_map = list(zip(user_options, mem_vals))

        if _settings.priority_channel >= 200:

            _priority_ch = 0xFF

        else:

            _priority_ch = _settings.priority_channel

        rs = RadioSetting(

            "priority_channel",

            "Priority Channel \n"

            "Note: Unused channels,\nor channels "

            "in the\nbroadcast FM band,\nwill not be set",

            RadioSettingValueMap(options_map, _priority_ch))

        cfg_grp.append(rs)

        # Step

        mem_vals = list(range(0, len(TGUV2P_STEPS)))

        mem_vals.append(0xFF)

        user_options = [(str(x) + " kHz") for x in TGUV2P_STEPS]

        user_options.append("Unknown")

        options_map = list(zip(user_options, mem_vals))

        rs = RadioSetting("step", "Current (VFO?) step size",

                          RadioSettingValueMap(options_map, _settings.step))

        cfg_grp.append(rs)

        # End (Tail) tone elimination

        mem_vals = [0, 1]

        user_options = ["Tone Elimination On", "Tone Elimination Off"]

        options_map = list(zip(user_options, mem_vals))

        rs = RadioSetting("not_end_tone_elim", "Tx End Tone Elimination",

                          RadioSettingValueMap(options_map,

                                               _settings.not_end_tone_elim))

        cfg_grp.append(rs)

        # VFO mode

        if _settings.vfo_mode >= 1:

            _vfo_mode = 0xFF

        else:

            _vfo_mode = _settings.vfo_mode

        mem_vals = [0xFF, 0]

        user_options = ["VFO Mode Enabled", "VFO Mode Disabled"]

        options_map = list(zip(user_options, mem_vals))

        rs = RadioSetting("vfo_mode", "VFO (CH only) mode",

                          RadioSettingValueMap(options_map, _vfo_mode))

        cfg_grp.append(rs)

        #

        # VFO Settings

        #

        vfo_groups = [vfoa_grp, vfob_grp]

        vfo_mem = [_vfoa, _vfob]

        vfo_lower = ["vfoa", "vfob"]

        vfo_upper = ["VFOA", "VFOB"]

        for idx, vfo_group in enumerate(vfo_groups):

            options = ["Channel", "Frequency"]

            tempvar = 0 if (vfo_mem[idx].current < 200) else 1

            rs = RadioSetting(vfo_lower[idx] + "_mode", vfo_upper[idx]+" Mode",

                              RadioSettingValueList(

                                  options, options[tempvar]))

            vfo_group.append(rs)

            if tempvar == 0:

                rs = RadioSetting(vfo_lower[idx] + "_ch",

                                  vfo_upper[idx] + " Channel",

                                  RadioSettingValueInteger(

                                      0, 199, vfo_mem[idx].current))

                vfo_group.append(rs)

            else:

                band_num = vfo_mem[idx].current - 200

                freq = int(_bandsettings[band_num].freq) * 10

                offset = int(_bandsettings[band_num].offset) * 10

                txtmode = _bandsettings[band_num].txtmode

                rxtmode = _bandsettings[band_num].rxtmode

                rs = RadioSetting(vfo_lower[idx] + "_freq",

                                  vfo_upper[idx] + " Frequency",

                                  RadioSettingValueFloat(

                                      0.0, 520.0, freq / 1000000.0,

                                      precision=6))

                vfo_group.append(rs)

                if offset > 70e6:

                    offset = 0

                rs = RadioSetting(vfo_lower[idx] + "_offset",

                                  vfo_upper[idx] + " Offset",

                                  RadioSettingValueFloat(

                                      0.0, 69.995, offset / 100000.0,

                                      resolution=0.005))

                vfo_group.append(rs)

                rs = RadioSetting(vfo_lower[idx] + "_duplex",

                                  vfo_upper[idx] + " Shift",

                                  RadioSettingValueList(

                                      DUPLEX,

                                      DUPLEX[_bandsettings[band_num].duplex]))

                vfo_group.append(rs)

                rs = RadioSetting(

                    vfo_lower[idx] + "_step",

                    vfo_upper[idx] + " Step",

                    RadioSettingValueFloat(

                        0.0, 1000.0,

                        TGUV2P_STEPS[_bandsettings[band_num].step],

                        resolution=0.25))

                vfo_group.append(rs)

                rs = RadioSetting(

                    vfo_lower[idx] + "_pwr",

                    vfo_upper[idx] + " Power",

                    RadioSettingValueList(

                        POWER_LEVELS_STR,

                        POWER_LEVELS_STR[_bandsettings[band_num].power]))

                vfo_group.append(rs)

                options = ["None", "Tone", "DTCS-N", "DTCS-I"]

                rs = RadioSetting(vfo_lower[idx] + "_ttmode",

                                  vfo_upper[idx]+" TX tone mode",

                                  RadioSettingValueList(

                                      options, options[txtmode]))

                vfo_group.append(rs)

                if txtmode == 1:

                    rs = RadioSetting(

                        vfo_lower[idx] + "_ttone",

                        vfo_upper[idx] + " TX tone",

                        RadioSettingValueFloat(

                            0.0, 1000.0,

                            chirp_common.TONES[_bandsettings[band_num].txtone],

                            resolution=0.1))

                    vfo_group.append(rs)

                elif txtmode >= 2:

                    txtone = _bandsettings[band_num].txtone

                    rs = RadioSetting(

                        vfo_lower[idx] + "_tdtcs",

                        vfo_upper[idx] + " TX DTCS",

                        RadioSettingValueInteger(

                            0, 1000, chirp_common.DTCS_CODES[txtone]))

                    vfo_group.append(rs)

                options = ["None", "Tone", "DTCS-N", "DTCS-I"]

                rs = RadioSetting(vfo_lower[idx] + "_rtmode",

                                  vfo_upper[idx] + " RX tone mode",

                                  RadioSettingValueList(options,

                                                        options[rxtmode]))

                vfo_group.append(rs)

                if rxtmode == 1:

                    rs = RadioSetting(

                        vfo_lower[idx] + "_rtone",

                        vfo_upper[idx] + " RX tone",

                        RadioSettingValueFloat(

                            0.0, 1000.0,

                            chirp_common.TONES[_bandsettings[band_num].rxtone],

                            resolution=0.1))

                    vfo_group.append(rs)

                elif rxtmode >= 2:

                    rxtone = _bandsettings[band_num].rxtone

                    rs = RadioSetting(vfo_lower[idx] + "_rdtcs",

                                      vfo_upper[idx] + " TX rTCS",

                                      RadioSettingValueInteger(

                                          0, 1000,

                                          chirp_common.DTCS_CODES[rxtone]))

                    vfo_group.append(rs)

                options = ["FM", "NFM"]

                rs = RadioSetting(

                    vfo_lower[idx] + "_fm",

                    vfo_upper[idx] + " FM BW ",

                    RadioSettingValueList(

                        options, options[_bandsettings[band_num].isnarrow]))

                vfo_group.append(rs)

        return group

    def _validate_priority_ch(self, ch_num):

        if ch_num == 0xFF:

            return True

        _mem, _bf, _nam = self._get_memobjs(ch_num)

        if (_mem.freq.get_raw()[0] == "\xFF") or (_bf.band == "\x0F"):

            return False

        elif _bf.band == 0x00:

            return False

        else:

            return True

    def set_settings(self, settings):

        for element in settings:

            if not isinstance(element, RadioSetting):

                self.set_settings(element)

                continue

            else:

                try:

                    if "vfoa" in element.get_name():

                        continue

                    if "vfob" in element.get_name():

                        continue

                    elif "." 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 == "beep_tone_disabled":

                        LOG.debug("Setting %s = %s" % (setting,

                                                       not int(element.value)))

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

                    elif setting == "busy_lockout":

                        LOG.debug("Setting %s = %s" % (setting,

                                                       not int(element.value)))

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

                    elif setting == "keyunlocked":

                        # keypad currently unlocked being set to locked

                        # and rx_mode is currently not "Normal":

                        if getattr(obj, "keyunlocked") and int(element.value) \

                                and (getattr(obj, "rxmode") != 0x02):

                            raise errors.InvalidValueError(

                                "Keypad lock not allowed in "

                                "Dual-Watch or CrossBand")

                        LOG.debug("Setting %s = %s" % (setting,

                                                       not int(element.value)))

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

                    elif setting == "rxmode":

                        # rx_mode was normal, now being set otherwise

                        # and keypad is locked:

                        if (getattr(obj, "rxmode") == 0x02) \

                                and (int(element.value) != 2) \

                                and not (getattr(obj, "keyunlocked")):

                            raise errors.InvalidValueError(

                                "Dual-Watch or CrossBand can not be set "

                                "when keypad is locked")

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

                        setattr(obj, setting, element.value)

                    elif setting == "priority_channel":

                        _check = self._validate_priority_ch(int(element.value))

                        if _check:

                            LOG.debug("Setting %s = %s" % (setting,

                                                           element.value))

                            setattr(obj, setting, element.value)

                        else:

                            raise errors.InvalidValueError(

                                "Please select a valid priority channel:\n"

                                "A used memory channel which is not "

                                "in the Broadcast FM band (88-108 MHz),\n"

                                "Or select 'Not Used'")

                    elif element.value.get_mutable():

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

                        setattr(obj, setting, element.value)

                except Exception:

                    LOG.debug(element.get_name())

                    raise

    @classmethod

    def match_model(cls, filedata, filename):

        return (filedata.startswith(b"TG-UV2+ Radio Program Data") and

                len(filedata) == (cls._memsize + 0x30))