CHIRP

# Version 1.0 for TYT-TH8600

# Initial radio protocol decode, channels and memory layout, basic settings

# by Andy Knitt <andyknitt@gmail.com>, Summer 2023

#

# 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.

import struct

import logging

import math

from chirp import chirp_common, directory, memmap

from chirp import bitwise, errors, util

from chirp.settings import RadioSettingGroup, RadioSetting, \

    RadioSettingValueBoolean, RadioSettingValueList, \

    RadioSettingValueString, RadioSettings

LOG = logging.getLogger(__name__)

MEM_FORMAT = """

struct chns {

  ul32 rxfreq;

  ul32 txfreq;

  ul16 rxtone;

  ul16 txtone;

  u8 power:2          // High=00,Mid=01,Low=10

     mode:2          //  WFM=00, FM=01, NFM=10

     b_lock:2         // off=00, sub=01, carrier=10

     REV:1

     TxInh:1;

  u8 sqlmode:3         // SQ=000, CT=001, Tone=010,

                       //CT or Tone=011, CTC and Tone=100

     signal:2          // off=00, dtmf=01, 2-tone=10, 5-tone=11

     display: 1

     talkoff: 1

     TBD: 1;

  u8 fivetonepttid: 2  //off=00, begin=01,end=10,both=11

     dtmfpttid: 2      //off=00, begin=01,end=10,both=11

     tuning_step: 4;   //

  u8 name[6];

};

struct chname {

  u8  extra_name[10];

};

#seekto 0x0000;

struct chns chan_mem[200];

struct chns scanlimits[4];

struct chns vfos[6];

#seekto 0x1960;

struct chname chan_name[200];

#seekto 0x1160;

struct {

  u8 introScreen1[12];    // 0x1160 *Intro Screen Line 1(truncated to 12 alpha

                          //         text characters)

  u8 unk_bit9 : 1,        // 0x116C

     subDisplay : 2,      //   0b00 = OFF; 0b01 = frequency; 0b10 = voltage

     unk_bit8 : 1,        //

     sqlLevel : 4;        //        *OFF, 1-9

  u8 beep : 1,            // 0x116D *OFF, On

     burstFreq : 2,       //        1750,2100,1000,1450 Hz tone burst frequency

     unkstr4: 4,          //

     txChSelect : 1;      //        *Last CH, Main CH

  u8 unk_bit7 : 1,        // 0x116E

     autoPowOff : 2,      //        OFF, 30Min, 1HR, 2HR

     tot : 5;             //        OFF, time in minutes (1 to 30)

  u8 pttRelease: 2,       // 0x116F  OFF, Begin, After, Both

     unk_bit6: 2,         //

     sqlTailElim: 2,      //        OFF, Frequency, No Frequency

     disableReset:1,      //        NO, YES

     menuOperation:1;     //        NO, YES

  u8 scanResumeTime : 2,  // 0x1170 2S, 5S, 10S, 15S

     disMode : 2,         //        Frequency, Channel, Name

     scanType: 2,         //        Time operated, Carrier operated, Se

     ledMode: 2;          //        On, 5 second, 10 second

  u8 unky;                // 0x1171

  u8 usePowerOnPw : 1,    // 0x1172 NO, YES

     elimTailNoTone: 1,   //        NO, YES

     unk6 : 6;            //

  u8 unk;                 // 0x1173

  u8 unk_bit5 : 1,        // 0x1174

     mzKeyFunc : 3,      //   A/B, Low, Monitor, Scan, Tone, M/V, MHz, Mute

     unk_bit4 : 1,        //

     lowKeyFunc : 3;      //   A/B, Low, Monitor, Scan, Tone, M/V, MHz, Mute

  u8 unk_bit3 : 1,        // 0x1175

     vmKeyFunc : 3,       //   A/B, Low, Monitor, Scan, Tone, M/V, MHz, Mute

     unk_bit2 : 1,        //

     ctKeyFunc : 3;       //   A/B, Low, Monitor,

                          //   Scan, Tone, M/V, MHz, Mute

  u8 abKeyFunc : 3,       // 0x1176  A/B, Low, Monitor,

                          //         Scan, Tone, M/V, MHz, Mute

     unk_bit1 : 1,        //

     volume : 4;          //         0 to 15

  u8 unk3 : 3,            // 0x1177

     introScreen : 2,     //      OFF, Picture, Character String

     unk_bits : 3;        //

  u8 unk4;                // 0x1178

  u8 unk5;                // 0x1179

  u8 powerOnPw[6];        // 0x117A  6 ASCII characters

} basicsettings;

#seekto 0x1180;

struct {

  u8 bitmap[26];    // one bit for each channel marked in use

} chan_avail;

#seekto 0x11A0;

struct {

  u8 bitmap[26];    // one bit for each channel; 0 = skip; 1 = dont skip

} chan_skip;

#seekto 0x1680;

ul32 rx_freq_limit_low_vhf;

ul32 rx_freq_limit_high_vhf;

ul32 tx_freq_limit_low_vhf;

ul32 tx_freq_limit_high_vhf;

ul32 rx_freq_limit_low_220;   //not supported by radio - always 0xFFFFFFFF

ul32 rx_freq_limit_high_220;  //not supported by radio - always 0xFFFFFFFF

ul32 tx_freq_limit_low_220;   //not supported by radio - always 0xFFFFFFFF

ul32 tx_freq_limit_high_220;  //not supported by radio - always 0xFFFFFFFF

ul32 rx_freq_limit_low_uhf;

ul32 rx_freq_limit_high_uhf;

ul32 tx_freq_limit_low_uhf;

ul32 tx_freq_limit_high_uhf;

#seekto 0x1940;

struct {

  u8 introLine1[16];    // 16 ASCII characters

  u8 introLine2[16];    // 16 ASCII characters

} intro_lines;

"""

MEM_SIZE = 0x2400

BLOCK_SIZE = 0x20

STIMEOUT = 2

BAUDRATE = 9600

# Channel power: 3 levels

POWER_LEVELS = [chirp_common.PowerLevel("High", watts=25.00),

                chirp_common.PowerLevel("Mid", watts=10.00),

                chirp_common.PowerLevel("Low", watts=5.00)]

B_LOCK_LIST = ["OFF", "Sub", "Carrier"]

OPTSIG_LIST = ["OFF", "DTMF", "2TONE", "5TONE"]

PTTID_LIST = ["Off", "BOT", "EOT", "Both"]

STEPS = [2.5, 5.0, 6.25, 7.5, 8.33, 10.0, 12.5, 15.0, 20.0, 25.0, 30.0, 50.0]

LIST_STEPS = [str(x) for x in STEPS]

# In the context of SQL_MODES, 'Tone' refers to 2tone, 5tone, or DTMF

# signalling while "CT" refers to CTCSS and DTCS

SQL_MODES = ["SQ", "CT", "Tone", "CT or Tone", "CT and Tone"]

SPECIAL_CHANS = ("L1", "U1",

                 "L2", "U2",

                 "VFOA_VHF", "VFOA_UHF",

                 "VFOB_VHF", "VFOB_UHF")

def _clean_buffer(radio):

    radio.pipe.timeout = 0.005

    junk = radio.pipe.read(256)

    radio.pipe.timeout = STIMEOUT

    if junk:

        LOG.debug("Got %i bytes of junk before starting" % len(junk))

def _rawrecv(radio, amount):

    """Raw read from the radio device"""

    data = ""

    try:

        data = radio.pipe.read(amount)

    except Exception:

        _exit_program_mode(radio)

        msg = "Generic error reading data from radio; check your cable."

        raise errors.RadioError(msg)

    if len(data) != amount:

        _exit_program_mode(radio)

        msg = "Error reading from radio: not the amount of data we want."

        raise errors.RadioError(msg)

    return data

def _rawsend(radio, data):

    """Raw send to the radio device"""

    try:

        radio.pipe.write(data)

    except Exception:

        raise errors.RadioError("Error sending data to radio")

def _make_read_frame(addr, length):

    frame = b"\xFE\xFE\xEE\xEF\xEB"

    """Pack the info in the header format"""

    frame += bytes(f'{addr:X}'.zfill(4), 'utf-8')

    frame += bytes(f'{length:X}'.zfill(2), 'utf-8')

    frame += b"\xFD"

    # Return the data

    return frame

def _make_write_frame(addr, length, data=""):

    frame = b"\xFE\xFE\xEE\xEF\xE4"

    """Pack the info in the header format"""

    output = struct.pack(">HB", addr, length)

    # Add the data if set

    if len(data) != 0:

        output += data

    # Convert to ASCII

    converted_data = b''

    for b in output:

        converted_data += bytes(f'{b:X}'.zfill(2), 'utf-8')

    frame += converted_data

    """Unlike other TYT models, the frame header is

       not included in the checksum calc"""

    cs_byte = _calculate_checksum(data)

    # convert checksum to ASCII

    converted_checksum = bytes(f'{cs_byte[0]:X}'.zfill(2), 'utf-8')

    frame += converted_checksum

    frame += b"\xFD"

    # Return the data

    return frame

def _calculate_checksum(data):

    num = 0

    for x in range(0, len(data)):

        num = (num + data[x]) % 256

    if num == 0:

        return bytes([0])

    return bytes([256 - num])

def _recv(radio, addr, length):

    """Get data from the radio """

    data = _rawrecv(radio, length)

    # DEBUG

    LOG.info("Response:")

    LOG.debug(util.hexprint(data))

    return data

def _do_ident(radio):

    """Put the radio in PROGRAM mode & identify it"""

    radio.pipe.baudrate = BAUDRATE

    radio.pipe.parity = "N"

    radio.pipe.timeout = STIMEOUT

    # Flush input buffer

    _clean_buffer(radio)

    # Ident radio

    magic = radio._magic0

    _rawsend(radio, magic)

    ack = _rawrecv(radio, 36)

    if not ack.startswith(radio._fingerprint) or not ack.endswith(b"\xFD"):

        _exit_program_mode(radio)

        if ack:

            LOG.debug(repr(ack))

        raise errors.RadioError("Radio did not respond as expected (A)")

    return True

def _exit_program_mode(radio):

    # This may be the last part of a read

    magic = radio._magic5

    _rawsend(radio, magic)

    _clean_buffer(radio)

def _download(radio):

    """Get the memory map"""

    # Put radio in program mode and identify it

    _do_ident(radio)

    # Enter read mode

    magic = radio._magic2

    _rawsend(radio, magic)

    ack = _rawrecv(radio, 7)

    if ack != b"\xFE\xFE\xEF\xEE\xE6\x00\xFD":

        _exit_program_mode(radio)

        if ack:

            LOG.debug(repr(ack))

        raise errors.RadioError("Radio did not respond to enter read mode")

    # UI progress

    status = chirp_common.Status()

    status.cur = 0

    status.max = MEM_SIZE // BLOCK_SIZE

    status.msg = "Cloning from radio..."

    radio.status_fn(status)

    data = b""

    for addr in range(0, MEM_SIZE, BLOCK_SIZE):

        frame = _make_read_frame(addr, BLOCK_SIZE)

        # DEBUG

        LOG.debug("Frame=" + util.hexprint(frame))

        # Sending the read request

        _rawsend(radio, frame)

        # Now we read data

        d = _recv(radio, addr, BLOCK_SIZE*2 + 14)

        LOG.debug("Response Data= " + util.hexprint(d))

        if not d.startswith(b"\xFE\xFE\xEF\xEE\xE4"):

            LOG.warning("Incorrect start")

        if not d.endswith(b"\xFD"):

            LOG.warning("Incorrect end")

        # validate the block data with checksum

        # HEADER IS NOT INCLUDED IN CHECKSUM CALC, UNLIKE OTHER TYT MODELS

        protected_data = d[5:-4]

        received_checksum = d[-4:-2]

        # unlike some other TYT models, the data protected by checksum

        # is sent over the wire in ASCII format.  Need to convert ASCII

        # to integers to perform the checksum calculation, which uses

        # the same algorithm as other TYT models.

        converted_data = b''

        for i in range(0, len(protected_data), 2):

            int_data = int(protected_data[i:i+2].decode('utf-8'), 16)

            converted_data += int_data.to_bytes(1, 'big')

        cs_byte = _calculate_checksum(converted_data)

        # checksum is sent over the wire as ASCII characters, so convert

        # the calculated value before checking against what was received

        converted_checksum = bytes(f'{cs_byte[0]:X}'.zfill(2), 'utf-8')

        if received_checksum != converted_checksum:

            LOG.warning("Incorrect checksum received")

        # Strip out header, addr, length, checksum,

        # eof and then aggregate the remaining data

        ascii_data = d[11:-3]

        if len(ascii_data) % 2 != 0:

            LOG.error("Invalid data length")

        converted_data = b''

        for i in range(0, len(ascii_data), 2):

            LOG.debug(ascii_data[i] + ascii_data[i+1])

            int_data = int(ascii_data[i:i+2].decode('utf-8'), 16)

            converted_data += int_data.to_bytes(1, 'big')

        data += converted_data

        # UI Update

        status.cur = addr // BLOCK_SIZE

        status.msg = "Cloning from radio..."

        radio.status_fn(status)

    _exit_program_mode(radio)

    return data

def _upload(radio):

    """Upload procedure"""

    # Put radio in program mode and identify it

    _do_ident(radio)

    magic = radio._magic3

    _rawsend(radio, magic)

    ack = _rawrecv(radio, 7)

    if ack != b"\xFE\xFE\xEF\xEE\xE6\x00\xFD":

        _exit_program_mode(radio)

        if ack:

            LOG.debug(repr(ack))

        raise errors.RadioError("Radio did not respond to enter write mode")

    # UI progress

    status = chirp_common.Status()

    status.cur = 0

    status.max = MEM_SIZE // BLOCK_SIZE

    status.msg = "Cloning to radio..."

    radio.status_fn(status)

    # The fun starts here

    for addr in range(0, MEM_SIZE, BLOCK_SIZE):

        # Official programmer skips writing these memory locations

        if addr >= 0x1680 and addr < 0x1940:

            continue

        # Sending the data

        data = radio.get_mmap()[addr:addr + BLOCK_SIZE]

        frame = _make_write_frame(addr, BLOCK_SIZE, data)

        LOG.warning("Frame:%s:" % util.hexprint(frame))

        _rawsend(radio, frame)

        ack = _rawrecv(radio, 7)

        LOG.debug("Response Data= " + util.hexprint(ack))

        if not ack.startswith(b"\xFE\xFE\xEF\xEE\xE6\x00\xFD"):

            LOG.warning("Unexpected response")

            _exit_program_mode(radio)

            msg = "Bad ack writing block 0x%04x" % addr

            raise errors.RadioError(msg)

        # UI Update

        status.cur = addr // BLOCK_SIZE

        status.msg = "Cloning to radio..."

        radio.status_fn(status)

    _exit_program_mode(radio)

def _do_map(chn, sclr, mary):

    """Set or Clear the chn (1-200) bit in mary[] word array map"""

    # chn is 1-based channel, sclr:1 = set, 0= = clear, 2= return state

    # mary[] is u8 array, but the map is by nibbles

    ndx = int(math.floor((chn - 1) / 8))

    bv = (chn - 1) % 8

    msk = 1 << bv

    mapbit = sclr

    if sclr == 1:    # Set the bit

        mary[ndx] = mary[ndx] | msk

    elif sclr == 0:  # clear

        mary[ndx] = mary[ndx] & (~ msk)     # ~ is complement

    else:       # return current bit state

        mapbit = 0

        if (mary[ndx] & msk) > 0:

            mapbit = 1

    return mapbit

@directory.register

class TH8600Radio(chirp_common.CloneModeRadio):

    """TYT TH8600 Radio"""

    VENDOR = "TYT"

    MODEL = "TH-8600"

    NEEDS_COMPAT_SERIAL = False

    MODES = ['WFM', 'FM', 'NFM']

    sql_modeS = ("", "Tone", "TSQL", "DTCS", "Cross")

    TONES = chirp_common.TONES

    DTCS_CODES = chirp_common.DTCS_CODES

    NAME_LENGTH = 6

    DTMF_CHARS = list("0123456789ABCD*#")

    # 136-174, 400-480

    VALID_BANDS = [(136000000, 174000001), (400000000, 480000001)]

    # Valid chars on the LCD

    VALID_CHARS = chirp_common.CHARSET_ALPHANUMERIC + \

        "`!\"#$%&'()*+,-./:;<=>?@[]^_"

    _magic0 = b"\xFE\xFE\xEE\xEF\xE0\x26\x98\x00\x00\xFD"

    _magic2 = b"\xFE\xFE\xEE\xEF\xE2\x26\x98\x00\x00\xFD"

    _magic3 = b"\xFE\xFE\xEE\xEF\xE3\x26\x98\x00\x00\xFD"

    _magic5 = b"\xFE\xFE\xEE\xEF\xE5\x26\x98\x00\x00\xFD"

    _fingerprint = b"\xFE\xFE\xEF\xEE\xE1\x26\x98\x00\x00\x31\x31\x31\x31" \

                   b"\x31\x31\x31\x31\x31\x31\x31\x31\x31\x31\x31\x31\x31" \

                   b"\x31\x31\x31\x34\x33\x34\x45"

    @classmethod

    def match_model(cls, filedata, filename):

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

        # old-school detection

        return False

    @classmethod

    def get_prompts(cls):

        rp = chirp_common.RadioPrompts()

        rp.info = \

            (cls.VENDOR + ' ' + cls.MODEL + '\n')

        rp.pre_download = _(

            "This is an early stage beta driver\n")

        rp.pre_upload = _(

            "This is an early stage beta driver - upload at your own risk\n")

        return rp

    def get_features(self):

        rf = chirp_common.RadioFeatures()

        rf.has_settings = True

        rf.has_bank = False

        rf.has_bank_index = False

        rf.has_bank_names = False

        rf.has_comment = False

        rf.has_tuning_step = True

        rf.valid_tuning_steps = STEPS

        rf.can_odd_split = True

        rf.has_name = True

        rf.has_offset = True

        rf.has_mode = True

        rf.has_dtcs = True

        rf.has_rx_dtcs = True

        rf.has_dtcs_polarity = True

        rf.has_ctone = True

        rf.has_cross = True

        rf.has_sub_devices = False

        rf.has_infinite_number = False

        rf.has_nostep_tuning = False

        rf.has_variable_power = False

        rf.valid_name_length = self.NAME_LENGTH

        rf.valid_modes = self.MODES

        rf.valid_characters = self.VALID_CHARS

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

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

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

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

                                "DTCS->DTCS"]

        rf.valid_skips = []

        rf.valid_power_levels = POWER_LEVELS

        rf.valid_dtcs_codes = chirp_common.DTCS_CODES

        rf.valid_bands = self.VALID_BANDS

        rf.valid_special_chans = SPECIAL_CHANS

        rf.memory_bounds = (0, 199)

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

        return rf

    def sync_in(self):

        """Download from radio"""

        try:

            data = _download(self)

        except errors.RadioError:

            # Pass through any real errors we raise

            raise

        except Exception:

            # 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 = memmap.MemoryMapBytes(data)

        self.process_mmap()

    def sync_out(self):

        """Upload to radio"""

        try:

            _upload(self)

        except Exception:

            # 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 process_mmap(self):

        """Process the mem map into the mem object"""

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

    '''

    def process_mmap(self):

        self._memobj = bitwise.parse(

            TH8600_MEM_FORMAT %

            (self._mmap_offset, self._scanlimits_offset, self._settings_offset,

             self._chan_active_offset, self._info_offset), self._mmap)

    '''

    def get_raw_memory(self, number):

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

    def set_memory(self, memory):

        """A value in a UI column for chan 'number' has been modified."""

        # update all raw channel memory values (_mem) from UI (mem)

        if memory.number >= 200 and memory.number < 204:

            _mem = self._memobj.scanlimits[memory.number-200]

            _name = None

        elif memory.number >= 204:

            _mem = self._memobj.vfos[memory.number-204]

            _name = None

        else:

            _mem = self._memobj.chan_mem[memory.number]

            _name = self._memobj.chan_name[memory.number]

            if memory.empty:

                _do_map(memory.number, 0, self._memobj.chan_avail.bitmap)

                return

            else:

                _do_map(memory.number, 1, self._memobj.chan_avail.bitmap)

            if memory.skip == "":

                _do_map(memory.number, 1, self._memobj.chan_skip.bitmap)

            else:

                _do_map(memory.number, 0, self._memobj.chan_skip.bitmap)

        return self._set_memory(memory, _mem, _name)

    def get_memory(self, number):

        mem = chirp_common.Memory()

        mem.number = number

        # Get a low-level memory object mapped to the image

        if isinstance(number, str) or number >= 200:

            # mem.number = -10 + SPECIAL_CHANS.index(number)

            if number == 'L1' or number == 200:

                _mem = self._memobj.scanlimits[0]

                _name = None

                mem.number = 200

                mem.extd_number = 'L1'

            elif number == 'U1' or number == 201:

                _mem = self._memobj.scanlimits[1]

                _name = None

                mem.number = 201

                mem.extd_number = 'U1'

            elif number == 'L2' or number == 202:

                _mem = self._memobj.scanlimits[2]

                _name = None

                mem.number = 202

                mem.extd_number = 'L2'

            elif number == 'U2' or number == 203:

                _mem = self._memobj.scanlimits[3]

                _name = None

                mem.number = 203

                mem.extd_number = 'U2'

            elif number == 'VFOA_VHF' or number == 204:

                _mem = self._memobj.vfos[0]

                mem.number = 204

                mem.extd_number = 'VFOA_VHF'

                _name = None

            elif number == 'VFOA_220' or number == 205:

                _mem = self._memobj.vfos[1]

                _name = None

                mem.number = 205

            elif number == 'VFOA_UHF' or number == 206:

                _mem = self._memobj.vfos[2]

                mem.number = 206

                mem.extd_number = 'VFOA_UHF'

                _name = None

            elif number == 'VFOB_VHF' or number == 207:

                _mem = self._memobj.vfos[3]

                mem.number = 207

                mem.extd_number = 'VFOB_VHF'

                _name = None

                mem.extd_number = 'VFOA_220'

            elif number == 'VFOB_220' or number == 208:

                _mem = self._memobj.vfos[4]

                _name = None

                mem.number = 208

                mem.extd_number = 'VFOB_220'

            elif number == 'VFOB_UHF' or number == 209:

                _mem = self._memobj.vfos[5]

                mem.number = 209

                mem.extd_number = 'VFOB_UHF'

                _name = None

        else:

            mem.number = number  # Set the memory number

            _mem = self._memobj.chan_mem[number]

            _name = self._memobj.chan_name[number]

            # Determine if channel is empty

            if _do_map(mem.number, 2, self._memobj.chan_avail.bitmap) == 0:

                mem.empty = True

                return mem

            if _do_map(mem.number, 2, self._memobj.chan_skip.bitmap) == 1:

                mem.skip = ""

            else:

                mem.skip = "S"

        return self._get_memory(mem, _mem, _name)

    def _get_memory(self, mem, _mem, _name):

        """Convert raw channel memory data into UI columns"""

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

        mem.empty = False

        # This function process both 'normal' and Freq up/down' entries

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

        if _mem.txfreq == 0xFFFFFFFF:

            # TX freq not set

            mem.duplex = "off"

            mem.offset = 0

        elif abs(int(_mem.rxfreq) * 10 - int(_mem.txfreq) * 10) > 25000000:

            mem.duplex = "split"

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

        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.name = ""

        for i in range(6):   # 0 - 6

            mem.name += chr(_mem.name[i])

        if _name and mem.number < 200:

            for i in range(10):

                mem.name += chr(_name.extra_name[i])

        mem.name = mem.name.rstrip()    # remove trailing spaces

        mem.tuning_step = STEPS[_mem.tuning_step]

        # ########## TONE ##########

        dtcs_polarity = ['N', 'N']

        if _mem.txtone == 0xFFF:

            # All off

            txmode = ""

        elif _mem.txtone >= 0x8000:

            # DTSC inverted when high bit is set - signed int

            txmode = "DTCS"

            mem.dtcs = int(format(int(_mem.txtone & 0x7FFF), 'o'))

            dtcs_polarity[0] = "R"

        elif _mem.txtone > 500:

            txmode = "Tone"

            mem.rtone = int(_mem.txtone) / 10.0

        else:

            # DTCS

            txmode = "DTCS"

            mem.dtcs = int(format(int(_mem.txtone), 'o'))

            dtcs_polarity[0] = "N"

        if _mem.rxtone == 0xFFF:

            rxmode = ""

        elif _mem.rxtone >= 0x8000:

            # DTSC inverted when high bit is set

            rxmode = "DTCS"

            mem.rx_dtcs = int(format(int(_mem.rxtone & 0x7FFF), 'o'))

            dtcs_polarity[1] = "R"

        elif _mem.rxtone > 500:

            rxmode = "Tone"

            mem.ctone = int(_mem.rxtone) / 10.0

        else:

            rxmode = "DTCS"

            mem.rx_dtcs = int(format(int(_mem.rxtone), 'o'))

            dtcs_polarity[1] = "N"

        mem.dtcs_polarity = "".join(dtcs_polarity)

        mem.tmode = ""

        if txmode == "Tone" and not rxmode:

            mem.tmode = "Tone"

        elif txmode == rxmode and txmode == "Tone" and mem.rtone == mem.ctone:

            mem.tmode = "TSQL"

        elif txmode == rxmode and txmode == "DTCS" and mem.dtcs == mem.rx_dtcs:

            mem.tmode = "DTCS"

            mem.rx_dtcs = mem.dtcs

            dtcs_polarity[1] = dtcs_polarity[0]

        elif rxmode or txmode:

            mem.tmode = "Cross"

            mem.cross_mode = "%s->%s" % (txmode, rxmode)

        # ########## TONE ##########

        mem.mode = self.MODES[_mem.mode]

        mem.power = POWER_LEVELS[int(_mem.power)]

        rs = RadioSettingValueList(B_LOCK_LIST,

                                   B_LOCK_LIST[min(_mem.b_lock, 0x02)])

        b_lock = RadioSetting("b_lock", "B_Lock", rs)

        mem.extra.append(b_lock)

        optsig = RadioSetting("signal", "Optional signaling",

                              RadioSettingValueList(

                                  OPTSIG_LIST,

                                  OPTSIG_LIST[_mem.signal]))

        mem.extra.append(optsig)

        vlist = RadioSettingValueList(PTTID_LIST, PTTID_LIST[_mem.dtmfpttid])

        dtmfpttid = RadioSetting("dtmfpttid", "DTMF PTT ID", vlist)

        mem.extra.append(dtmfpttid)

        vlist2 = RadioSettingValueList(PTTID_LIST,

                                       PTTID_LIST[_mem.fivetonepttid])

        fivetonepttid = RadioSetting("fivetonepttid", "5 Tone PTT ID", vlist2)

        mem.extra.append(fivetonepttid)

        return mem

    def _set_memory(self, mem, _mem, _name):

        # """Convert UI column data (mem) into MEM_FORMAT memory (_mem)."""

        _mem.rxfreq = mem.freq / 10

        _mem.tuning_step = STEPS.index(mem.tuning_step)

        if mem.duplex == "off":

            _mem.txfreq = 0xFFFFFFFF

        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.rxfreq

        out_name = mem.name.ljust(16)

        for i in range(6):   # 0 - 6

            _mem.name[i] = ord(out_name[i])

        if mem.number < 200:

            for i in range(10):

                _name.extra_name[i] = ord(out_name[i+6])

        # autoset display to name if filled, else show frequency

        if mem.name != "      ":

            _mem.display = True

        else:

            _mem.display = False

        rxmode = ""

        txmode = ""

        sql_mode = "SQ"

        if mem.tmode == "":

            sql_mode = "SQ"

            _mem.rxtone = 0xFFF

            _mem.txtone = 0xFFF

        elif mem.tmode == "Tone":

            txmode = "Tone"

            sql_mode = "SQ"

            _mem.txtone = int(float(mem.rtone) * 10)

            _mem.rxtone = 0xFFF

        elif mem.tmode == "TSQL":

            rxmode = "Tone"

            txmode = "TSQL"

            sql_mode = "CT"

            _mem.rxtone = int(float(mem.ctone) * 10)

            _mem.txtone = int(float(mem.ctone) * 10)

        elif mem.tmode == "DTCS":

            rxmode = "DTCS"

            txmode = "DTCS"

            sql_mode = "CT"

            if mem.dtcs_polarity[0] == "N":

                _mem.txtone = int(str(mem.dtcs), 8)