# 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 struct
import logging

from chirp import chirp_common, directory, memmap
from chirp import bitwise, errors, util
from chirp.settings import RadioSetting, RadioSettingGroup, \
    RadioSettingValueInteger, RadioSettingValueList, \
    RadioSettingValueBoolean, RadioSettings

LOG = logging.getLogger(__name__)

MEM_FORMAT = """
#seekto 0x0010;
struct {
    lbcd rxfreq[4];
    lbcd txfreq[4];
    lbcd rxtone[2];
    lbcd txtone[2];
    u8 speccode:1,       // Retevis RB87 PTT ID
       compander:1,
       scramble:1,
       skip:1,
       highpower:1,
       narrow:1,
       unknown2:1,
       bcl:1;
    u8 unknown3[3];
} memory[%d];
#seekto 0x02B0;
struct {
    u8 voicesw;      // Voice SW            +
    u8 voiceselect;  // Voice Select
    u8 scan;         // Scan                +
    u8 vox;          // VOX                 +
    u8 voxgain;      // Vox Gain            +
    u8 voxnotxonrx;  // Rx Disable Vox      +
    u8 hivoltnotx;   // High Vol Inhibit TX +
    u8 lovoltnotx;   // Low Vol Inhibit TX  +
    u8 rxemergency;  // RX Emergency
} settings2;
#seekto 0x03C0;
struct {
    u8 codesw:1,         // Retevis RB29 code switch
                         // Retevis H777H code switch
       scanmode:1,
       vox:1,            // Retevis RB19 VOX
       speccode:1,       // Retevis H777H VOX
       voiceprompt:2,
       batterysaver:1,
       beep:1;           // Retevis RB87 vox
    u8 squelchlevel;
    u8 sidekey2;         // Retevis RT22S setting
                         // Retevis RB85 sidekey 1 short
                         // Retevis RB19 sidekey 2 long
                         // Retevis RT47 sidekey 1 long
                         // Retevis RB87 sidekey 1 long
                         // Retevis H777H roger
    u8 timeouttimer;
    u8 voxlevel;
    u8 sidekey2S;
    u8 unused;           // Selected channel
    u8 voxdelay;
    u8 sidekey1L;
    u8 sidekey2L;
    u8 unused2[3];
    u8 unknown3:4,
       unknown4:1,
       unknown5:2,
       power10w:1;       // Retevis RT85 power 10w on/off
                         // Retevis RT75 stop TX with low voltage
} settings;
"""

MEM_FORMAT_RB18 = """
#seekto 0x0000;
struct {
    lbcd rxfreq[4];
    lbcd txfreq[4];
    lbcd rxtone[2];
    lbcd txtone[2];
    u8 jumpcode:1,
       unknown1:2,
       skip:1,
       highpower:1,
       narrow:1,
       unknown2:1,
       bcl:1;
    u8 unknown3[3];
} memory[%d];
#seekto 0x0630;
struct {
    u8 unk630:7,
       voice:1;
    u8 unk631:7,
       language:1;
    u8 unk632:7,
       scan:1;
    u8 unk633:7,
       vox:1;
    u8 unk634:5,
       vox_level:3;
    u8 unk635;
    u8 unk636:7,
       lovoltnotx:1;
    u8 unk637:7,
       hivoltnotx:1;
    u8 unknown2[8];
    u8 unk640:5,
       rogerbeep:1,
       batterysaver:1,
       beep:1;
    u8 squelchlevel;
    u8 unk642;
    u8 timeouttimer;
    u8 unk644:7,
       tail:1;
    u8 channel;
} settings;
"""

MEM_FORMAT_T20FRS = """
// #seekto 0x0000;
struct {
    lbcd rxfreq[4];
    lbcd txfreq[4];
    lbcd rxtone[2];
    lbcd txtone[2];
    u8 jumpcode:1,
       unknown1:2,
       skip:1,
       highpower:1,
       narrow:1,
       unknown2:1,
       bcl:1;
    u8 unknown3[3];
} memory[%d];
#seekto 0x02B0;
struct {
    u8 voicesw;      // Voice SW            +
    u8 voiceselect;  // Voice Select
    u8 scan;         // Scan                +
    u8 vox;          // VOX                 +
    u8 voxgain;      // Vox Gain            +
    u8 voxnotxonrx;  // Rx Disable Vox      +
    u8 hivoltnotx;   // High Vol Inhibit TX +
    u8 lovoltnotx;   // Low Vol Inhibit TX  +
    u8 rxemergency;  // RX Emergency
} settings2;
#seekto 0x02C0;
struct {
    u8 unk:6,
       batterysaver:1,
       beep:1;
    u8 squelchlevel;
    u8 sidekey2;
    u8 timeouttimer;
} settings;
"""

CMD_ACK = b"\x06"

VOICE_LIST = ["Off", "Chinese", "English"]
VOICE_LIST2 = ["English", "Chinese"]
VOICE_LIST3 = ["Off", "English", "Chinese"]
VOICE_LIST4 = ["Chinese", "English"]
SCANMODE_LIST = ["Carrier", "Time"]
VOXLEVEL_LIST = ["Off", "1", "2", "3", "4", "5", "6", "7", "8", "9"]
VOXDELAY_LIST = ["0.5 seconds", "1.0 seconds", "1.5 seconds",
                 "2.0 seconds", "2.5 seconds", "3.0 seconds"]
SIDEKEY19_LIST = ["Off", "Scan", "Emergency Alarm"]
SIDEKEY2_LIST = SIDEKEY19_LIST + ["Display Battery"]
SIDEKEY29_LIST = ["Off", "Scan", "VOX", "Busy Lock", "Emergency Alarm"]

SIDEKEY85SHORT_LIST = ["Off",
                       "Noise Cansellation On",
                       "Continuous Monitor",
                       "High/Low Power",
                       "Emergency Alarm",
                       "Show Battery",
                       "Scan",
                       "VOX",
                       "Busy Channel Lock"]
SIDEKEY85LONG_LIST = ["Off",
                      "Noise Cansellation On",
                      "Continuous Monitor",
                      "Monitor Momentary",
                      "High/Low Power",
                      "Emergency Alarm",
                      "Show Battery",
                      "Scan",
                      "VOX",
                      "Busy Channel Lock"]
SPECCODE_LIST = ["SpeCode 1", "SpeCode 2"]
SIDEKEY75_LIST = ["Off",
                  "Monitor Momentary",
                  "Scan",
                  "VOX",
                  "Monitor",
                  "Announciation"]
SIDEKEY47_LIST = ["Monitor Momentary",
                  "Channel Lock",
                  "Scan",
                  "VOX"]
SIDEKEYV8A_LIST = ["Off",
                   "Monitor",
                   "High/Low Power",
                   "Alarm"]
SIDEKEY87_LIST = ["Scan", "Emergency Alarm"]
SIDEKEYH777H_LIST = ["Off",
                     "VOX",
                     "SCAN",
                     "Monitor"]

FRS_FREQS1 = [462562500, 462587500, 462612500, 462637500, 462662500,
              462687500, 462712500]
FRS_FREQS2 = [467562500, 467587500, 467612500, 467637500, 467662500,
              467687500, 467712500]
FRS_FREQS3 = [462550000, 462575000, 462600000, 462625000, 462650000,
              462675000, 462700000, 462725000]
FRS_FREQS = FRS_FREQS1 + FRS_FREQS2 + FRS_FREQS3

FRS16_FREQS = [462562500, 462587500, 462612500, 462637500,
               462662500, 462625000, 462725000, 462687500,
               462712500, 462550000, 462575000, 462600000,
               462650000, 462675000, 462700000, 462725000]

GMRS_FREQS = FRS_FREQS1 + FRS_FREQS2 + FRS_FREQS3 * 2

MURS_FREQS = [151820000, 151880000, 151940000, 154570000, 154600000]

PMR_FREQS1 = [446006250, 446018750, 446031250, 446043750, 446056250,
              446068750, 446081250, 446093750]
PMR_FREQS2 = [446106250, 446118750, 446131250, 446143750, 446156250,
              446168750, 446181250, 446193750]
PMR_FREQS = PMR_FREQS1 + PMR_FREQS2


def _t18_enter_programming_mode(radio):
    serial = radio.pipe

    _magic = b"\x02" + radio._magic

    try:
        serial.write(_magic)
        if radio._echo:
            chew = serial.read(len(_magic))  # Chew the echo
        ack = serial.read(1)
    except:
        raise errors.RadioError("Error communicating with radio")

    if not ack:
        raise errors.RadioError("No response from radio")
    elif ack != CMD_ACK:
        raise errors.RadioError("Radio refused to enter programming mode")

    try:
        serial.write(b"\x02")
        if radio._echo:
            serial.read(1)  # Chew the echo
        ident = serial.read(8)
    except:
        raise errors.RadioError("Error communicating with radio")

    # check if ident is OK
    for fp in radio._fingerprint:
        if ident.startswith(fp):
            break
    else:
        LOG.debug("Incorrect model ID, got this:\n\n" + util.hexprint(ident))
        raise errors.RadioError("Radio identification failed.")

    try:
        serial.write(CMD_ACK)
        if radio._echo:
            serial.read(1)  # Chew the echo
        ack = serial.read(1)
    except:
        raise errors.RadioError("Error communicating with radio")

    if radio.MODEL == "RT647":
        if ack != b"\xF0":
            raise errors.RadioError("Radio refused to enter programming mode")
    else:
        if ack != CMD_ACK:
            raise errors.RadioError("Radio refused to enter programming mode")


def _t18_exit_programming_mode(radio):
    serial = radio.pipe
    try:
        serial.write(radio.CMD_EXIT)
        if radio._echo:
            chew = serial.read(1)  # Chew the echo
    except:
        raise errors.RadioError("Radio refused to exit programming mode")


def _t18_read_block(radio, block_addr, block_size):
    serial = radio.pipe

    cmd = struct.pack(">cHb", b'R', block_addr, block_size)
    expectedresponse = b"W" + cmd[1:]
    LOG.debug("Reading block %04x..." % (block_addr))

    try:
        serial.write(cmd)
        if radio._echo:
            serial.read(4)  # Chew the echo
        response = serial.read(4 + block_size)
        if response[:4] != expectedresponse:
            raise Exception("Error reading block %04x." % (block_addr))

        block_data = response[4:]

        if radio.ACK_BLOCK:
            serial.write(CMD_ACK)
            if radio._echo:
                serial.read(1)  # Chew the echo
            ack = serial.read(1)
    except:
        raise errors.RadioError("Failed to read block at %04x" % block_addr)

    if radio.ACK_BLOCK:
        if ack != CMD_ACK:
            raise Exception("No ACK reading block %04x." % (block_addr))

    return block_data


def _t18_write_block(radio, block_addr, block_size):
    serial = radio.pipe

    cmd = struct.pack(">cHb", b'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 radio._echo:
            serial.read(4 + len(data))  # Chew the echo
        if serial.read(1) != CMD_ACK:
            raise Exception("No ACK")
    except:
        raise errors.RadioError("Failed to send block "
                                "to radio at %04x" % block_addr)


def do_download(radio):
    LOG.debug("download")
    _t18_enter_programming_mode(radio)

    data = b""

    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 = _t18_read_block(radio, addr, radio.BLOCK_SIZE)
        data += block

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

    _t18_exit_programming_mode(radio)

    return memmap.MemoryMapBytes(data)


def do_upload(radio):
    status = chirp_common.Status()
    status.msg = "Uploading to radio"

    _t18_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):
            status.cur = addr + radio.BLOCK_SIZE
            radio.status_fn(status)
            _t18_write_block(radio, addr, radio.BLOCK_SIZE)

    _t18_exit_programming_mode(radio)


def model_match(cls, data):
    """Match the opened/downloaded image to the correct version"""

    if len(data) == cls._memsize:
        rid = data[0x03D0:0x03D8]
        return b"P558" in rid
    else:
        return False


@directory.register
class T18Radio(chirp_common.CloneModeRadio):
    """radtel T18"""
    VENDOR = "Radtel"
    MODEL = "T18"
    BAUD_RATE = 9600
    BLOCK_SIZE = 0x08
    CMD_EXIT = b"b"
    ACK_BLOCK = True

    VALID_BANDS = [(400000000, 470000000)]

    TIMEOUTTIMER_LIST = ["Off", "30 seconds", "60 seconds", "90 seconds",
                         "120 seconds", "150 seconds", "180 seconds",
                         "210 seconds", "240 seconds", "270 seconds",
                         "300 seconds"]

    _magic = b"1ROGRAM"
    _fingerprint = [b"SMP558" + b"\x00\x00"]
    _upper = 16
    _mem_params = (_upper  # number of channels
                   )
    _frs = _frs16 = _murs = _pmr = _gmrs = False
    _echo = False
    _reserved = False

    _ranges = [
        (0x0000, 0x03F0),
    ]
    _memsize = 0x03F0

    def get_features(self):
        rf = chirp_common.RadioFeatures()
        rf.has_settings = True
        rf.valid_modes = ["NFM", "FM"]  # 12.5 kHz, 25 kHz.
        rf.valid_skips = ["", "S"]
        rf.valid_tmodes = ["", "Tone", "TSQL", "DTCS", "Cross"]
        rf.valid_duplexes = ["", "-", "+", "split", "off"]
        if self.MODEL != "T18" and \
                self.MODEL != "RB618" and \
                self.MODEL != "RT647":
            rf.valid_power_levels = self.POWER_LEVELS
        rf.can_odd_split = True
        rf.has_rx_dtcs = True
        rf.has_ctone = True
        rf.has_cross = True
        rf.valid_cross_modes = [
            "Tone->Tone",
            "DTCS->",
            "->DTCS",
            "Tone->DTCS",
            "DTCS->Tone",
            "->Tone",
            "DTCS->DTCS"]
        rf.has_tuning_step = False
        rf.has_bank = False
        rf.has_name = False
        rf.memory_bounds = (1, self._upper)
        rf.valid_bands = self.VALID_BANDS
        rf.valid_tuning_steps = chirp_common.TUNING_STEPS

        return rf

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

    def sync_in(self):
        self._mmap = do_download(self)
        self.process_mmap()

    def sync_out(self):
        do_upload(self)

    def get_raw_memory(self, number):
        return repr(self._memobj.memory[number - 1])

    def _decode_tone(self, val):
        val = int(val)
        if val == 16665:
            return '', None, None
        elif val >= 12000:
            return 'DTCS', val - 12000, 'R'
        elif val >= 8000:
            return 'DTCS', val - 8000, 'N'
        else:
            return 'Tone', val / 10.0, None

    def _encode_tone(self, memval, mode, value, pol):
        if mode == '':
            memval[0].set_raw(0xFF)
            memval[1].set_raw(0xFF)
        elif mode == 'Tone':
            memval.set_value(int(value * 10))
        elif mode == 'DTCS':
            flag = 0x80 if pol == 'N' else 0xC0
            memval.set_value(value)
            memval[1].set_bits(flag)
        else:
            raise Exception("Internal error: invalid mode `%s'" % mode)

    def get_memory(self, number):
        _mem = self._memobj.memory[number - 1]

        mem = chirp_common.Memory()

        mem.number = number

        if self._reserved:
            _rsvd = _mem.unknown3.get_raw()

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

        # We'll consider any blank (i.e. 0 MHz frequency) to be empty
        if mem.freq == 0:
            mem.empty = True
            return mem

        if _mem.rxfreq.get_raw() == b"\xFF\xFF\xFF\xFF":
            mem.freq = 0
            mem.empty = True
            return mem

        if _mem.txfreq.get_raw() == b"\xFF\xFF\xFF\xFF":
            mem.duplex = "off"
            mem.offset = 0
        elif 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

        mem.mode = not _mem.narrow and "FM" or "NFM"

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

        txtone = self._decode_tone(_mem.txtone)
        rxtone = self._decode_tone(_mem.rxtone)
        chirp_common.split_tone_decode(mem, txtone, rxtone)

        if self.MODEL != "T18" and self.MODEL != "RB618":
            mem.power = self.POWER_LEVELS[1 - _mem.highpower]

        mem.extra = RadioSettingGroup("Extra", "extra")
        rs = RadioSetting("bcl", "Busy Channel Lockout",
                          RadioSettingValueBoolean(not _mem.bcl))
        mem.extra.append(rs)
        if self.MODEL != "RB18" and self.MODEL != "RB618" and \
                self.MODEL != "FRS-B1" and self.MODEL != "BF-V8A" and \
                self.MODEL != "RB29" and self.MODEL != "RB629" and \
                self.MODEL != "BF-T20FRS":
            if self.MODEL not in ["RB87",
                                  "RT47V"]:
                rs = RadioSetting("scramble", "Scramble",
                                  RadioSettingValueBoolean(not _mem.scramble))
                mem.extra.append(rs)
            rs = RadioSetting("compander", "Compander",
                              RadioSettingValueBoolean(not _mem.compander))
            mem.extra.append(rs)
            if self.MODEL != "RT47V" and self.MODEL != "T8" and \
                    self.MODEL != "RB17" and self.MODEL != "RB617" and \
                    self.MODEL != "RB75" and self.MODEL != "RB19P":
                if self.MODEL == "RB87":
                    rs = RadioSettingValueBoolean(not _mem.speccode)
                    rset = RadioSetting("speccode", "PTT-ID", rs)
                    mem.extra.append(rset)
                else:
                    rs = RadioSettingValueBoolean(not _mem.speccode)
                    rset = RadioSetting("speccode", "Spec Code", rs)
                    mem.extra.append(rset)

        immutable = []

        if self._frs:
            if mem.freq in FRS_FREQS:
                if mem.number >= 1 and mem.number <= 22:
                    FRS_FREQ = FRS_FREQS[mem.number - 1]
                    mem.freq = FRS_FREQ
                mem.duplex = ''
                mem.offset = 0
                mem.mode = "NFM"
                if mem.number >= 8 and mem.number <= 14:
                    mem.power = self.POWER_LEVELS[1]
                    immutable = ["empty", "freq", "duplex", "offset", "mode",
                                 "power"]
                else:
                    immutable = ["empty", "freq", "duplex", "offset", "mode"]
        elif self._frs16:
            if mem.freq in FRS16_FREQS:
                if mem.number >= 1 and mem.number <= 16:
                    FRS_FREQ = FRS16_FREQS[mem.number - 1]
                    mem.freq = FRS_FREQ
                mem.duplex = ''
                mem.offset = 0
                mem.mode = "NFM"
                immutable = ["empty", "freq", "duplex", "offset", "mode"]
        elif self._murs:
            if mem.freq in MURS_FREQS:
                if mem.number >= 1 and mem.number <= 5:
                    MURS_FREQ = MURS_FREQS[mem.number - 1]
                    mem.freq = MURS_FREQ
                mem.duplex = ''
                mem.offset = 0
                if mem.number <= 3:
                    mem.mode = "NFM"
                    immutable = ["empty", "freq", "duplex", "offset", "mode"]
                else:
                    immutable = ["empty", "freq", "duplex", "offset"]
        elif self._pmr:
            if mem.freq in PMR_FREQS:
                if mem.number >= 1 and mem.number <= 16:
                    PMR_FREQ = PMR_FREQS[mem.number - 1]
                    mem.freq = PMR_FREQ
                mem.duplex = ''
                mem.offset = 0
                mem.mode = "NFM"
                mem.power = self.POWER_LEVELS[1]
                immutable = ["empty", "freq", "duplex", "offset", "mode",
                             "power"]
        elif self._gmrs:
            if mem.freq in GMRS_FREQS:
                if mem.number >= 1 and mem.number <= 30:
                    GMRS_FREQ = GMRS_FREQS[mem.number - 1]
                    mem.freq = GMRS_FREQ
                    immutable = ["freq"]
                if mem.number >= 1 and mem.number <= 7:
                    mem.duplex = ''
                    mem.offset = 0
                    immutable += ["duplex", "offset"]
                elif mem.number >= 8 and mem.number <= 14:
                    mem.duplex = ''
                    mem.offset = 0
                    mem.mode = "NFM"
                    mem.power = self.POWER_LEVELS[1]
                    immutable += ["duplex", "offset", "mode", "power"]
                elif mem.number >= 15 and mem.number <= 22:
                    mem.duplex = ''
                    mem.offset = 0
                    immutable += ["duplex", "offset"]
                elif mem.number >= 23 and mem.number <= 30:
                    mem.duplex = '+'
                    mem.offset = 5000000
                    immutable += ["duplex", "offset"]

        mem.immutable = immutable

        return mem

    def set_memory(self, mem):
        # Get a low-level memory object mapped to the image
        _mem = self._memobj.memory[mem.number - 1]

        if self._reserved:
            _rsvd = _mem.unknown3.get_raw()

        if mem.empty:
            if self._reserved:
                _mem.set_raw(b"\xFF" * 13 + _rsvd)
            else:
                _mem.set_raw(b"\xFF" * (_mem.size() // 8))

            return

        if self._reserved:
            _mem.set_raw(b"\x00" * 13 + _rsvd)
        elif self.MODEL == "BF-V8A" or self.MODEL == "BF-T20FRS":
            _mem.set_raw(b"\x00" * 12 + b"\x09\xFF\xFF\xFF")
        elif self.MODEL == "RB29" or self.MODEL == "RB629":
            _mem.set_raw(b"\x00" * 12 + b"\xF7\xFF\xFF\xFF")
        else:
            _mem.set_raw(b"\x00" * 12 + b"\xF9\xFF\xFF\xFF")

        _mem.rxfreq = mem.freq / 10

        if mem.duplex == "off":
            for i in range(0, 4):
                _mem.txfreq[i].set_raw(b"\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

        txtone, rxtone = chirp_common.split_tone_encode(mem)
        self._encode_tone(_mem.txtone, *txtone)
        self._encode_tone(_mem.rxtone, *rxtone)

        if self.MODEL != "T18" and self.MODEL != "RB18":
            _mem.highpower = mem.power == self.POWER_LEVELS[0]

        _mem.narrow = 'N' in mem.mode
        _mem.skip = mem.skip == "S"

        _mem.unknown2 = 1

        for setting in mem.extra:
            # NOTE: Only three settings right now, all are inverted
            setattr(_mem, setting.get_name(), not int(setting.value))

    def get_settings(self):
        _settings = self._memobj.settings
        if self.MODEL == "FRS-B1" or self.MODEL == "BF-V8A" or \
                self.MODEL == "BF-T20FRS":
            _settings2 = self._memobj.settings2
        basic = RadioSettingGroup("basic", "Basic Settings")
        top = RadioSettings(basic)

        rs = RadioSetting("squelchlevel", "Squelch level",
                          RadioSettingValueInteger(
                              0, 9, _settings.squelchlevel))
        basic.append(rs)

        rs = RadioSetting("timeouttimer", "Timeout timer",
                          RadioSettingValueList(
                              self.TIMEOUTTIMER_LIST,
                              current_index=_settings.timeouttimer))
        basic.append(rs)

        if self.MODEL == "RB18" or self.MODEL == "RB618":
            rs = RadioSetting("scan", "Scan",
                              RadioSettingValueBoolean(_settings.scan))
            basic.append(rs)
        elif self.MODEL == "FRS-B1" or self.MODEL == "BF-V8A" or \
                self.MODEL == "BF-T20FRS":
            rs = RadioSetting("settings2.scan", "Scan",
                              RadioSettingValueBoolean(_settings2.scan))
            basic.append(rs)
        else:
            rs = RadioSetting("scanmode", "Scan mode",
                              RadioSettingValueList(
                                  SCANMODE_LIST,
                                  current_index=_settings.scanmode))
            basic.append(rs)

        if self.MODEL == "RT20":
            rs = RadioSetting("voiceprompt", "Voice prompts",
                              RadioSettingValueList(
                                  VOICE_LIST4,
                                  current_index=_settings.voiceprompt))
            basic.append(rs)
        elif self.MODEL == "RT22S":
            rs = RadioSetting("voiceprompt", "Voice prompts",
                              RadioSettingValueBoolean(_settings.voiceprompt))
            basic.append(rs)
        elif self.MODEL == "RB18" or self.MODEL == "RB618":
            rs = RadioSetting("voice", "Voice prompts",
                              RadioSettingValueBoolean(_settings.voice))
            basic.append(rs)
        elif self.MODEL == "FRS-B1" or self.MODEL == "BF-V8A" or \
                self.MODEL == "BF-T20FRS":
            rs = RadioSetting("settings2.voicesw", "Voice prompts",
                              RadioSettingValueBoolean(_settings2.voicesw))
            basic.append(rs)
        elif self.MODEL == "RT15":
            rs = RadioSetting("voiceprompt", "Voice prompts",
                              RadioSettingValueList(
                                  VOICE_LIST3,
                                  current_index=_settings.voiceprompt))
            basic.append(rs)
        else:
            if self.MODEL != "RB87":
                rs = RadioSetting("voiceprompt", "Voice prompts",
                                  RadioSettingValueList(
                                      VOICE_LIST,
                                      current_index=_settings.voiceprompt))
                basic.append(rs)

        rs = RadioSetting("batterysaver", "Battery saver",
                          RadioSettingValueBoolean(_settings.batterysaver))
        basic.append(rs)

        if self.MODEL not in ["RB29",
                              "RB75",
                              "RB87",
                              "RB629",
                              "RT15"
                              ]:
            rs = RadioSetting("beep", "Beep",
                              RadioSettingValueBoolean(_settings.beep))
            basic.append(rs)

        if self.MODEL == "RB19" or self.MODEL == "RB19P" \
                or self.MODEL == "RB619":
            rs = RadioSetting("vox", "VOX",
                              RadioSettingValueBoolean(_settings.vox))
            basic.append(rs)

        if self.MODEL == "RB87":
            rs = RadioSetting("beep", "VOX",
                              RadioSettingValueBoolean(_settings.beep))
            basic.append(rs)

        if self.MODEL != "RB18" and self.MODEL != "RB618" \
                and self.MODEL != "FRS-B1" \
                and self.MODEL != "BF-V8A" \
                and self.MODEL != "BF-T20FRS":
            rs = RadioSetting("voxlevel", "Vox level",
                              RadioSettingValueList(
                                  VOXLEVEL_LIST,
                                  current_index=_settings.voxlevel))
            basic.append(rs)

            rs = RadioSetting("voxdelay", "VOX delay",
                              RadioSettingValueList(
                                  VOXDELAY_LIST,
                                  current_index=_settings.voxdelay))
            basic.append(rs)

        if self.MODEL == "RT22S":
            rs = RadioSetting("sidekey2", "Side Key 2(Long)",
                              RadioSettingValueList(
                                  SIDEKEY2_LIST,
                                  current_index=_settings.sidekey2))
            basic.append(rs)

        if self.MODEL == "RB18" or self.MODEL == "RB618":
            rs = RadioSetting("language", "Language",
                              RadioSettingValueList(
                                  VOICE_LIST2,
                                  current_index=_settings.language))
            basic.append(rs)

            rs = RadioSetting("tail", "Tail",
                              RadioSettingValueBoolean(_settings.tail))
            basic.append(rs)

            rs = RadioSetting("hivoltnotx", "High voltage no TX",
                              RadioSettingValueBoolean(_settings.hivoltnotx))
            basic.append(rs)

            rs = RadioSetting("lovoltnotx", "Low voltage no TX",
                              RadioSettingValueBoolean(_settings.lovoltnotx))
            basic.append(rs)

            rs = RadioSetting("vox", "VOX",
                              RadioSettingValueBoolean(_settings.vox))
            basic.append(rs)

            if _settings.vox_level > 4:
                val = 1
            else:
                val = _settings.vox_level + 1
            rs = RadioSetting("vox_level", "VOX level",
                              RadioSettingValueInteger(1, 5, val))
            basic.append(rs)

            rs = RadioSetting("rogerbeep", "Roger beep",
                              RadioSettingValueBoolean(_settings.rogerbeep))
            basic.append(rs)

        if self.MODEL == "RB85":
            rs = RadioSetting("speccode", "SpecCode Select",
                              RadioSettingValueList(
                                  SPECCODE_LIST,
                                  current_index=_settings.speccode))
            basic.append(rs)

            rs = RadioSetting("sidekey2", "Side Key 1(Short)",
                              RadioSettingValueList(
                                  SIDEKEY85SHORT_LIST,
                                  current_index=_settings.sidekey2))
            basic.append(rs)

            rs = RadioSetting("sidekey1L", "Side Key 1(Long)",
                              RadioSettingValueList(
                                  SIDEKEY85LONG_LIST,
                                  current_index=_settings.sidekey1L))
            basic.append(rs)

            rs = RadioSetting("sidekey2S", "Side Key 2(Short)",
                              RadioSettingValueList(
                                  SIDEKEY85SHORT_LIST,
                                  current_index=_settings.sidekey2S))
            basic.append(rs)

            rs = RadioSetting("sidekey2L", "Side Key 2(Long)",
                              RadioSettingValueList(
                                  SIDEKEY85LONG_LIST,
                                  current_index=_settings.sidekey2L))
            basic.append(rs)

            rs = RadioSetting("power10w", "Power 10W",
                              RadioSettingValueBoolean(_settings.power10w))
            basic.append(rs)

        if self.MODEL == "RB75":
            rs = RadioSetting("sidekey2", "Side Key 1(Short)",
                              RadioSettingValueList(
                                  SIDEKEY75_LIST,
                                  current_index=_settings.sidekey2))
            basic.append(rs)

            rs = RadioSetting("sidekey1L", "Side Key 1(Long)",
                              RadioSettingValueList(
                                  SIDEKEY75_LIST,
                                  current_index=_settings.sidekey1L))
            basic.append(rs)

            rs = RadioSetting("sidekey2S", "Side Key 2(Short)",
                              RadioSettingValueList(
                                  SIDEKEY75_LIST,
                                  current_index=_settings.sidekey2S))
            basic.append(rs)

            rs = RadioSetting("sidekey2L", "Side Key 2(Long)",
                              RadioSettingValueList(
                                  SIDEKEY75_LIST,
                                  current_index=_settings.sidekey2L))
            basic.append(rs)

            rs = RadioSetting("power10w", "Low Voltage Stop TX",
                              RadioSettingValueBoolean(_settings.power10w))
            basic.append(rs)

        if self.MODEL == "RB87":
            rs = RadioSetting("sidekey2", "Side Key 1(Long)",
                              RadioSettingValueList(
                                  SIDEKEY87_LIST,
                                  current_index=_settings.sidekey2))
            basic.append(rs)

        if self.MODEL == "FRS-B1":
            rs = RadioSetting("settings2.hivoltnotx",
                              "High Voltage Inhibit TX",
                              RadioSettingValueBoolean(_settings2.hivoltnotx))
            basic.append(rs)

            rs = RadioSetting("settings2.lovoltnotx", "Low Voltage Inhibit TX",
                              RadioSettingValueBoolean(_settings2.lovoltnotx))
            basic.append(rs)

            rs = RadioSetting("settings2.vox", "Vox",
                              RadioSettingValueBoolean(_settings2.vox))
            basic.append(rs)

            rs = RadioSetting("settings2.voxnotxonrx", "Rx Disable VOX",
                              RadioSettingValueBoolean(_settings2.voxnotxonrx))
            basic.append(rs)

            rs = RadioSetting("settings2.voxgain", "Vox Gain",
                              RadioSettingValueInteger(
                                  1, 5, _settings2.voxgain))
            basic.append(rs)

        if self.MODEL == "RB19" or self.MODEL == "RB19P" \
                or self.MODEL == "RB619":
            rs = RadioSetting("sidekey2", "Left Navigation Button(Long)",
                              RadioSettingValueList(
                                  SIDEKEY19_LIST,
                                  current_index=_settings.sidekey2))
            basic.append(rs)

        if self.MODEL == "RT47" or self.MODEL == "RT47V" or \
                self.MODEL == "RT647":
            rs = RadioSetting("sidekey2", "Side Key 1(Long)",
                              RadioSettingValueList(
                                  SIDEKEY47_LIST,
                                  current_index=_settings.sidekey2))
            basic.append(rs)

            rs = RadioSetting("sidekey2S", "Side Key 2(Long)",
                              RadioSettingValueList(
                                  SIDEKEY47_LIST,
                                  current_index=_settings.sidekey2S))
            basic.append(rs)

        if self.MODEL == "BF-V8A" or self.MODEL == "BF-T20FRS":
            rs = RadioSetting("sidekey2", "Side key",
                              RadioSettingValueList(
                                  SIDEKEYV8A_LIST,
                                  current_index=_settings.sidekey2))
            basic.append(rs)

            rs = RadioSetting("settings2.rxemergency", "RX emergency",
                              RadioSettingValueBoolean(_settings2.rxemergency))
            basic.append(rs)

            rs = RadioSetting("settings2.voiceselect", "Language",
                              RadioSettingValueList(
                                  VOICE_LIST2,
                                  current_index=_settings2.voiceselect))
            basic.append(rs)

            rs = RadioSetting("settings2.hivoltnotx",
                              "High voltage inhibit TX",
                              RadioSettingValueBoolean(_settings2.hivoltnotx))
            basic.append(rs)

            rs = RadioSetting("settings2.lovoltnotx", "Low voltage inhibit TX",
                              RadioSettingValueBoolean(_settings2.lovoltnotx))
            basic.append(rs)

            rs = RadioSetting("settings2.vox", "VOX",
                              RadioSettingValueBoolean(_settings2.vox))
            basic.append(rs)

            rs = RadioSetting("settings2.voxnotxonrx", "RX disable VOX",
                              RadioSettingValueBoolean(_settings2.voxnotxonrx))
            basic.append(rs)

            rs = RadioSetting("settings2.voxgain", "Vox Gain",
                              RadioSettingValueInteger(
                                  1, 5, _settings2.voxgain))
            basic.append(rs)

        if self.MODEL == "RB29" or self.MODEL == "RB629":
            rs = RadioSetting("codesw", "Code Switch",
                              RadioSettingValueBoolean(_settings.codesw))
            basic.append(rs)

            rs = RadioSetting("sidekey2S", "Side Key(Short)",
                              RadioSettingValueList(
                                  SIDEKEY29_LIST,
                                  current_index=_settings.sidekey2S))
            basic.append(rs)

            rs = RadioSetting("sidekey2L", "Side Key(Long)",
                              RadioSettingValueList(
                                  SIDEKEY29_LIST,
                                  current_index=_settings.sidekey2L))
            basic.append(rs)

        if self.MODEL == "H777H_FRS" or self.MODEL == "H777H_PMR":
            rs = RadioSetting("codesw", "Code Switch",
                              RadioSettingValueBoolean(_settings.codesw))
            basic.append(rs)

            rs = RadioSetting("speccode", "VOX",
                              RadioSettingValueBoolean(_settings.speccode))
            basic.append(rs)

            rs = RadioSetting("sidekey2L", "Side Key 2(Long)",
                              RadioSettingValueList(
                                  SIDEKEYH777H_LIST,
                                  current_index=_settings.sidekey2L))
            basic.append(rs)

            rs = RadioSetting("sidekey2", "Roger",
                              RadioSettingValueBoolean(_settings.sidekey2))
            basic.append(rs)

        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 == "vox_level":
                        setattr(obj, setting, int(element.value) - 1)
                    else:
                        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):
        if cls.MODEL == "T18":
            match_size = False
            match_model = False

            # testing the file data size
            if len(filedata) == cls._memsize:
                match_size = True

            # testing the model fingerprint
            match_model = model_match(cls, filedata)

            if match_size and match_model:
                return True
            else:
                return False
        else:
            # Radios that have always been post-metadata, so never do
            # old-school detection
            return False


@directory.register
class RT20Radio(T18Radio):
    """RETEVIS RT20"""
    VENDOR = "Retevis"
    MODEL = "RT20"
    ACK_BLOCK = True
    BLOCK_SIZE = 0x08

    POWER_LEVELS = [chirp_common.PowerLevel("High", watts=2.00),
                    chirp_common.PowerLevel("Low",  watts=0.50)]

    _magic = b"8AOGRAM"
    _fingerprint = [b"SMP558" + b"\x02"]
    _upper = 16
    _mem_params = (_upper  # number of channels
                   )


@directory.register
class RT22SRadio(T18Radio):
    """RETEVIS RT22S"""
    VENDOR = "Retevis"
    MODEL = "RT22S"
    ACK_BLOCK = False

    POWER_LEVELS = [chirp_common.PowerLevel("High", watts=2.00),
                    chirp_common.PowerLevel("Low",  watts=0.50)]

    _magic = b"9COGRAM"
    _fingerprint = [b"SMP558" + b"\x02"]
    _upper = 22
    _mem_params = (_upper  # number of channels
                   )
    _frs = True
    _pmr = False


@directory.register
class RB18Radio(T18Radio):
    """RETEVIS RB18"""
    VENDOR = "Retevis"
    MODEL = "RB18"
    BLOCK_SIZE = 0x10
    CMD_EXIT = b"E"

    POWER_LEVELS = [chirp_common.PowerLevel("High", watts=2.00),
                    chirp_common.PowerLevel("Low",  watts=0.50)]

    _magic = b"PROGRAL"
    _fingerprint = [b"P3107" + b"\xF7"]
    _upper = 22
    _mem_params = (_upper  # number of channels
                   )
    _frs = True
    _pmr = False

    _ranges = [
        (0x0000, 0x0660),
    ]
    _memsize = 0x0660

    def process_mmap(self):
        self._memobj = bitwise.parse(MEM_FORMAT_RB18 %
                                     self._mem_params, self._mmap)

    @classmethod
    def match_model(cls, filedata, filename):
        # This radio has always been post-metadata, so never do
        # old-school detection
        return False


@directory.register
class RB618Radio(RB18Radio):
    """RETEVIS RB618"""
    VENDOR = "Retevis"
    MODEL = "RB618"

    _upper = 16
    _mem_params = (_upper  # number of channels
                   )
    _frs = False
    _pmr = True


@directory.register
class RT68Radio(T18Radio):
    """RETEVIS RT68"""
    VENDOR = "Retevis"
    MODEL = "RT68"
    ACK_BLOCK = False
    CMD_EXIT = b""

    POWER_LEVELS = [chirp_common.PowerLevel("High", watts=2.00),
                    chirp_common.PowerLevel("Low",  watts=0.50)]

    _magic = b"83OGRAM"
    _fingerprint = [b"\x06\x00\x00\x00\x00\x00\x00\x00"]
    _upper = 16
    _mem_params = (_upper  # number of channels
                   )
    _frs16 = True
    _pmr = False

    @classmethod
    def match_model(cls, filedata, filename):
        # This radio has always been post-metadata, so never do
        # old-school detection
        return False


@directory.register
class RT668Radio(RT68Radio):
    """RETEVIS RT668"""
    VENDOR = "Retevis"
    MODEL = "RT668"

    _frs16 = False
    _pmr = True


@directory.register
class RB17Radio(RT68Radio):
    """RETEVIS RB17"""
    VENDOR = "Retevis"
    MODEL = "RB17"

    _magic = b"A5OGRAM"
    _fingerprint = [b"\x53\x00\x00\x00\x00\x00\x00\x00"]

    _frs16 = True
    _pmr = False
    _murs = False


@directory.register
class RB617Radio(RB17Radio):
    """RETEVIS RB617"""
    VENDOR = "Retevis"
    MODEL = "RB617"

    _frs16 = False
    _pmr = True
    _murs = False


@directory.register
class RB17VRadio(RB17Radio):
    """RETEVIS RB17V"""
    VENDOR = "Retevis"
    MODEL = "RB17V"

    VALID_BANDS = [(136000000, 174000000)]

    _upper = 5

    _frs16 = False
    _pmr = False
    _murs = True


@directory.register
class RB85Radio(T18Radio):
    """Retevis RB85"""
    VENDOR = "Retevis"
    MODEL = "RB85"
    ACK_BLOCK = False

    POWER_LEVELS = [chirp_common.PowerLevel("High", watts=10.00),
                    chirp_common.PowerLevel("Low", watts=5.00)]

    _magic = b"H19GRAM"
    _fingerprint = [b"SMP558" + b"\x02"]


@directory.register
class RB75Radio(T18Radio):
    """Retevis RB75"""
    VENDOR = "Retevis"
    MODEL = "RB75"
    ACK_BLOCK = False

    POWER_LEVELS = [chirp_common.PowerLevel("High", watts=5.00),
                    chirp_common.PowerLevel("Low", watts=0.50)]

    _magic = b"KVOGRAM"
    _fingerprint = [b"SMP558" + b"\x00"]
    _upper = 30
    _mem_params = (_upper  # number of channels
                   )
    _gmrs = False  # sold as GMRS radio but supports full band TX/RX


@directory.register
class FRSB1Radio(T18Radio):
    """BTECH FRS-B1"""
    VENDOR = "BTECH"
    MODEL = "FRS-B1"
    ACK_BLOCK = True

    POWER_LEVELS = [chirp_common.PowerLevel("High", watts=2.00),
                    chirp_common.PowerLevel("Low", watts=0.50)]

    _magic = b"PROGRAM"
    _fingerprint = [b"P3107" + b"\xF7\x00"]
    _upper = 22
    _mem_params = (_upper  # number of channels
                   )
    _frs = True


@directory.register
class RB19Radio(T18Radio):
    """Retevis RB19"""
    VENDOR = "Retevis"
    MODEL = "RB19"
    ACK_BLOCK = False

    POWER_LEVELS = [chirp_common.PowerLevel("High", watts=2.00),
                    chirp_common.PowerLevel("Low", watts=0.50)]

    _magic = b"9COGRAM"
    _fingerprint = [b"SMP558" + b"\x02"]
    _upper = 22
    _mem_params = (_upper  # number of channels
                   )
    _frs = True


@directory.register
class RB19PRadio(T18Radio):
    """Retevis RB19P"""
    VENDOR = "Retevis"
    MODEL = "RB19P"
    ACK_BLOCK = False

    POWER_LEVELS = [chirp_common.PowerLevel("High", watts=3.00),
                    chirp_common.PowerLevel("Low", watts=0.50)]

    _magic = b"70OGRAM"
    _fingerprint = [b"SMP558" + b"\x02"]
    _upper = 30
    _mem_params = (_upper  # number of channels
                   )
    _gmrs = True


@directory.register
class RB619Radio(T18Radio):
    """Retevis RB619"""
    VENDOR = "Retevis"
    MODEL = "RB619"
    ACK_BLOCK = False

    POWER_LEVELS = [chirp_common.PowerLevel("High", watts=0.500),
                    chirp_common.PowerLevel("Low", watts=0.499)]

    _magic = b"9COGRAM"
    _fingerprint = [b"SMP558" + b"\x02"]
    _upper = 16
    _mem_params = (_upper  # number of channels
                   )
    _pmr = True


@directory.register
class RT47Radio(T18Radio):
    """Retevis RT47"""
    VENDOR = "Retevis"
    MODEL = "RT47"
    ACK_BLOCK = False

    POWER_LEVELS = [chirp_common.PowerLevel("High", watts=2.000),
                    chirp_common.PowerLevel("Low", watts=0.500)]

    _magic = b"47OGRAM"
    _fingerprint = [b"\x06\x00\x00\x00\x00\x00\x00\x00"]
    _upper = 16
    _mem_params = (_upper  # number of channels
                   )
    _frs16 = True
    _echo = True


@directory.register
class RT47VRadio(RT47Radio):
    """Retevis RT47V"""
    VENDOR = "Retevis"
    MODEL = "RT47V"

    VALID_BANDS = [(136000000, 174000000)]

    _upper = 5
    _mem_params = (_upper  # number of channels
                   )
    _frs16 = False
    _murs = True


@directory.register
class RT647Radio(RT47Radio):
    """Retevis RT647"""
    VENDOR = "Retevis"
    MODEL = "RT647"

    _frs16 = False
    _pmr = True


@directory.register
class BFV8ARadio(T18Radio):
    """Baofeng BF-V8A"""
    VENDOR = "Baofeng"
    MODEL = "BF-V8A"
    ACK_BLOCK = True

    POWER_LEVELS = [chirp_common.PowerLevel("High", watts=2.000),
                    chirp_common.PowerLevel("Low", watts=0.500)]

    _magic = b"PROGRAM"
    _fingerprint = [b"P3107" + b"\xF7\x00\x00"]
    _upper = 16
    _mem_params = (_upper  # number of channels
                   )
    _echo = False


@directory.register
class RB29Radio(T18Radio):
    """Retevis RB29"""
    VENDOR = "Retevis"
    MODEL = "RB29"
    ACK_BLOCK = False

    POWER_LEVELS = [chirp_common.PowerLevel("High", watts=2.00),
                    chirp_common.PowerLevel("Low", watts=0.50)]

    _magic = b"S19GRAM"
    _fingerprint = [b"SMP558" + b"\x02"]
    _upper = 16
    _mem_params = (_upper  # number of channels
                   )
    _frs16 = True


@directory.register
class RB629Radio(RB29Radio):
    """Retevis RB29"""
    VENDOR = "Retevis"
    MODEL = "RB629"

    POWER_LEVELS = [chirp_common.PowerLevel("High", watts=0.500),
                    chirp_common.PowerLevel("Low", watts=0.499)]

    _frs16 = False
    _pmr = True


@directory.register
class RT15Radio(T18Radio):
    """RETEVIS RT15"""
    VENDOR = "Retevis"
    MODEL = "RT15"
    ACK_BLOCK = False
    CMD_EXIT = b"b"

    POWER_LEVELS = [chirp_common.PowerLevel("High", watts=2.00),
                    chirp_common.PowerLevel("Low",  watts=0.50)]

    _magic = b"KAOGRAM"
    _fingerprint = [b"\x06\x00\x00\x00\x00\x00\x00\x00",
                    b"\x06\x03\xE8\x08\xFF\xFF\xFF\xFF"]
    _upper = 16
    _mem_params = (_upper  # number of channels
                   )
    _frs16 = False  # sold as FRS radio but supports full band TX/RX

    @classmethod
    def match_model(cls, filedata, filename):
        # This radio has always been post-metadata, so never do
        # old-school detection
        return False


@directory.register
class RB87Radio(T18Radio):
    """RETEVIS RB87"""
    VENDOR = "Retevis"
    MODEL = "RB87"
    ACK_BLOCK = False
    CMD_EXIT = b""
    ACK_BLOCK = False

    POWER_LEVELS = [chirp_common.PowerLevel("High", watts=5.00),
                    chirp_common.PowerLevel("Low", watts=0.50)]

    _magic = b"C8OGRAN"
    _fingerprint = [b"SMP558"]
    _upper = 30
    _mem_params = (_upper  # number of channels
                   )
    _gmrs = True


@directory.register
class BFT20FRSRadio(T18Radio):
    """Baofeng BF-T20FRS"""
    VENDOR = "Baofeng"
    MODEL = "BF-T20FRS"
    ACK_BLOCK = True

    POWER_LEVELS = [chirp_common.PowerLevel("High", watts=2.000),
                    chirp_common.PowerLevel("Low", watts=0.500)]

    _magic = b"PROGRAM"
    _fingerprint = [b"P3107" + b"\xF7\x00\x00"]
    _upper = 22
    _mem_params = (_upper  # number of channels
                   )
    _frs = False  # sold as FRS radio but supports full band TX/RX

    _ranges = [
        (0x0000, 0x0160),
        (0x02B0, 0x02D0),
    ]
    _memsize = 0x03F0

    def process_mmap(self):
        self._memobj = bitwise.parse(MEM_FORMAT_T20FRS %
                                     self._mem_params, self._mmap)


@directory.register
class H777HFRSRadio(T18Radio):
    """Retevis H777H FRS"""
    VENDOR = "Retevis"
    MODEL = "H777H_FRS"  # SKU: A9104J
    ACK_BLOCK = False

    POWER_LEVELS = [chirp_common.PowerLevel("High", watts=2.000),
                    chirp_common.PowerLevel("Low", watts=0.500)]

    TIMEOUTTIMER_LIST = ["Off", "30 seconds", "60 seconds", "90 seconds",
                         "120 seconds", "150 seconds", "180 seconds"]

    _magic = b"C701RAD"
    _fingerprint = [b"SMP558" + b"\x02"]
    _upper = 16
    _mem_params = (_upper  # number of channels
                   )
    _reserved = True
    _frs16 = True
    _pmr = False


@directory.register
class H777HPMRRadio(H777HFRSRadio):
    """Retevis H777H PMR"""
    VENDOR = "Retevis"
    MODEL = "H777H_PMR"  # SKU: A9104K

    POWER_LEVELS = [chirp_common.PowerLevel("High", watts=0.500),
                    chirp_common.PowerLevel("Low", watts=0.500)]

    _frs16 = False
    _pmr = True
