CHIRP

# Copyright 2016:

# * Jim Unroe KC9HI, <rock.unroe@gmail.com>

# * Pavel Milanes CO7WT <pavelmc@gmail.com>

#

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

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

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

# (at your option) any later version.

#

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

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

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

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

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

import time

import struct

import logging

import re

from chirp import chirp_common, directory, memmap

from chirp import bitwise, errors, util

from chirp.settings import RadioSettingGroup, RadioSetting, \

    RadioSettingValueBoolean, RadioSettingValueList, \

    RadioSettingValueString, RadioSettingValueInteger, \

    RadioSettingValueFloat, RadioSettings

LOG = logging.getLogger(__name__)

MEM_FORMAT = """

struct mem {

  lbcd rxfreq[4];

  lbcd txfreq[4];

  lbcd rxtone[2];

  lbcd txtone[2];

  u8 unknown0:2,

     txp:2,

     wn:2,

     unknown1:1,

     bcl:1;

  u8 unknown2:2,

     revert:1,

     dname:1,

     unknown3:4;

  u8 unknown4[2];

};

struct nam {

  char name[6];

  u8 unknown1[2];

};

#seekto 0x0000;

struct mem left_memory[500];

#seekto 0x2000;

struct mem right_memory[500];

#seekto 0x4000;

struct nam left_names[500];

#seekto 0x5000;

struct nam right_names[500];

#seekto 0x6000;

u8 left_usedflags[64];

#seekto 0x6040;

u8 left_scanflags[64];

#seekto 0x6080;

u8 right_usedflags[64];

#seekto 0x60C0;

u8 right_scanflags[64];

#seekto 0x6160;

struct {

  char line32[32];

} embedded_msg;

#seekto 0x6180;

struct {

  u8  sbmute:2,        // sub band mute

      unknown1:1,

      workmodb:1,      // work mode (right side)

      dw:1,            // dual watch

      audio:1,         // audio output mode (stereo/mono)

      unknown2:1,

      workmoda:1;      // work mode (left side)

  u8  scansb:1,        // scan stop beep

      aftone:3,        // af tone control

      scand:1,         // scan direction

      scanr:3;         // scan resume

  u8  rxexp:1,         // rx expansion

      ptt:1,           // ptt mode

      display:1,       // display select (frequency/clock)

      omode:1,         // operation mode

      beep:2,          // beep volume

      spkr:2;          // speaker

  u8  cpuclk:1,        // operating mode(cpu clock)

      fkey:3,          // fkey function

      mrscan:1,        // memory scan type

      color:3;         // lcd backlight color

  u8  vox:2,           // vox

      voxs:3,          // vox sensitivity

      mgain:3;         // mic gain

  u8  wbandb:4,        // work band (right side)

      wbanda:4;        // work band (left side)

  u8  sqlb:4,          // squelch level (right side)

      sqla:4;          // squelch level (left side)

  u8  apo:4,           // auto power off

      ars:1,           // automatic repeater shift

      tot:3;           // time out timer

  u8  stepb:4,         // auto step (right side)

      stepa:4;         // auto step (left side)

  u8  rxcoverm:1,      // rx coverage-memory

      lcdc:3,          // lcd contrast

      rxcoverv:1,      // rx coverage-vfo

      lcdb:3;          // lcd brightness

  u8  smode:1,         // smart function mode

      timefmt:1,       // time format

      datefmt:2,       // date format

      timesig:1,       // time signal

      keyb:3;          // key/led brightness

  u8  dwstop:1,        // dual watch stop

      unknown3:1,

      sqlexp:1,        // sql expansion

      decbandsel:1,    // decoding band select

      dtmfmodenc:1,    // dtmf mode encode

      bell:3;          // bell ringer

  u8  unknown4:2,

      btime:6;         // lcd backlight time

  u8  unknown5:2,

      tz:6;            // time zone

  u8  unknown618E;

  u8  unknown618F;

  ul16  offseta;       // work offset (left side)

  ul16  offsetb;       // work offset (right side)

  ul16  mrcha;         // selected memory channel (left)

  ul16  mrchb;         // selected memory channel (right)

  ul16  wpricha;       // work priority channel (left)

  ul16  wprichb;       // work priority channel (right)

  u8  unknown6:3,

      datasql:2,       // data squelch

      dataspd:1,       // data speed

      databnd:2;       // data band select

  u8  unknown7:1,

      pfkey2:3,        // mic p2 key

      unknown8:1,

      pfkey1:3;        // mic p1 key

  u8  unknown9:1,

      pfkey4:3,        // mic p4 key

      unknowna:1,

      pfkey3:3;        // mic p3 key

  u8  unknownb:7,

      dtmfmoddec:1;    // dtmf mode decode

} settings;

#seekto 0x61B0;

struct {

  char line16[16];

} poweron_msg;

#seekto 0x6300;

struct {

  u8  unknown1:3,

      ttdgt:5;         // dtmf digit time

  u8  unknown2:3,

      ttint:5;         // dtmf interval time

  u8  unknown3:3,

      tt1stdgt:5;      // dtmf 1st digit time

  u8  unknown4:3,

      tt1stdly:5;      // dtmf 1st digit delay

  u8  unknown5:3,

      ttdlyqt:5;       // dtmf delay when use qt

  u8  unknown6:3,

      ttdkey:5;        // dtmf d key function

  u8  unknown7;

  u8  unknown8:4,

      ttautod:4;       // dtmf auto dial group

} dtmf;

#seekto 0x6330;

struct {

  u8  unknown1:7,

      ttsig:1;         // dtmf signal

  u8  unknown2:4,

      ttintcode:4;     // dtmf interval code

  u8  unknown3:5,

      ttgrpcode:3;     // dtmf group code

  u8  unknown4:4,

      ttautorst:4;     // dtmf auto reset time

  u8  unknown5:5,

      ttalert:3;       // dtmf alert tone/transpond

} dtmf2;

#seekto 0x6360;

struct {

  u8 code1[8];         // dtmf code

  u8 code1_len;        // dtmf code length

  u8 unknown1[7];

  u8 code2[8];         // dtmf code

  u8 code2_len;        // dtmf code length

  u8 unknown2[7];

  u8 code3[8];         // dtmf code

  u8 code3_len;        // dtmf code length

  u8 unknown3[7];

  u8 code4[8];         // dtmf code

  u8 code4_len;        // dtmf code length

  u8 unknown4[7];

  u8 code5[8];         // dtmf code

  u8 code5_len;        // dtmf code length

  u8 unknown5[7];

  u8 code6[8];         // dtmf code

  u8 code6_len;        // dtmf code length

  u8 unknown6[7];

  u8 code7[8];         // dtmf code

  u8 code7_len;        // dtmf code length

  u8 unknown7[7];

  u8 code8[8];         // dtmf code

  u8 code8_len;        // dtmf code length

  u8 unknown8[7];

  u8 code9[8];         // dtmf code

  u8 code9_len;        // dtmf code length

  u8 unknown9[7];

} dtmfcode;

"""

MEM_SIZE = 0x8000

BLOCK_SIZE = 0x40

MODES = ["FM", "Auto", "NFM", "AM"]

SKIP_VALUES = ["", "S"]

TONES = chirp_common.TONES

DTCS_CODES = chirp_common.DTCS_CODES

NAME_LENGTH = 6

DTMF_CHARS = list("0123456789ABCD*#")

STIMEOUT = 1

# Basic settings lists

LIST_AFTONE = ["Low-3", "Low-2", "Low-1", "Normal", "High-1", "High-2"]

LIST_SPKR = ["Off", "Front", "Rear", "Front + Rear"]

LIST_AUDIO = ["Monaural", "Stereo"]

LIST_SBMUTE = ["Off", "TX", "RX", "Both"]

LIST_MLNHM = ["Min", "Low", "Normal", "High", "Max"]

LIST_PTT = ["Momentary", "Toggle"]

LIST_RXEXP = ["General", "Wide coverage"]

LIST_VOX = ["Off", "Internal mic", "Front hand-mic", "Rear hand-mic"]

LIST_DISPLAY = ["Frequency", "Timer/Clock"]

LIST_MINMAX = ["Min"] + ["%s" % x for x in range(2, 8)] + ["Max"]

LIST_COLOR = ["White-Blue", "Sky-Blue", "Marine-Blue", "Green",

              "Yellow-Green", "Orange", "Amber", "White"]

LIST_BTIME = ["Continuous"] + ["%s" % x for x in range(1, 61)]

LIST_MRSCAN = ["All", "Selected"]

LIST_DWSTOP = ["Auto", "Hold"]

LIST_SCAND = ["Down", "Up"]

LIST_SCANR = ["Busy", "Hold", "1 sec", "3 sec", "5 sec"]

LIST_APO = ["Off", ".5", "1", "1.5"] + ["%s" % x for x in range(2, 13)]

LIST_BEEP = ["Off", "Low", "High"]

LIST_FKEY = ["MHz/AD-F", "AF Dual 1(line-in)", "AF Dual 2(AM)",

             "AF Dual 3(FM)", "PA", "SQL off", "T-call", "WX"]

LIST_PFKEY = ["Off", "SQL off", "TX power", "Scan", "RPT shift", "Reverse",

              "T-Call"]

LIST_AB = ["A", "B"]

LIST_COVERAGE = ["In band", "All"]

LIST_TOT = ["Off"] + ["%s" % x for x in range(5, 25, 5)] + ["30"]

LIST_DATEFMT = ["yyyy/mm/dd", "yyyy/dd/mm", "mm/dd/yyyy", "dd/mm/yyyy"]

LIST_TIMEFMT = ["24H", "12H"]

LIST_TZ = ["-12 INT DL W",

           "-11 MIDWAY",

           "-10 HAST",

           "-9 AKST",

           "-8 PST",

           "-7 MST",

           "-6 CST",

           "-5 EST",

           "-4:30 CARACAS",

           "-4 AST",

           "-3:30 NST",

           "-3 BRASILIA",

           "-2 MATLANTIC",

           "-1 AZORES",

           "-0 LONDON",

           "+0 LONDON",

           "+1 ROME",

           "+2 ATHENS",

           "+3 MOSCOW",

           "+3:30 REHRW",

           "+4 ABUDNABI",

           "+4:30 KABUL",

           "+5 ISLMABAD",

           "+5:30 NEWDELHI",

           "+6 DHAKA",

           "+6:30 YANGON",

           "+7 BANKOK",

           "+8 BEIJING",

           "+9 TOKYO",

           "+10 ADELAIDE",

           "+10 SYDNET",

           "+11 NWCLDNIA",

           "+12 FIJI",

           "+13 NUKALOFA"

           ]

LIST_BELL = ["Off", "1 time", "3 times", "5 times", "8 times", "Continuous"]

LIST_DATABND = ["Main band", "Sub band", "Left band-fixed", "Right band-fixed"]

LIST_DATASPD = ["1200 bps", "9600 bps"]

LIST_DATASQL = ["Busy/TX", "Busy", "TX"]

# Other settings lists

LIST_CPUCLK = ["Clock frequency 1", "Clock frequency 2"]

# Work mode settings lists

LIST_WORK = ["VFO", "Memory System"]

LIST_WBANDB = ["Air", "H-V", "GR1-V", "GR1-U", "H-U", "GR2"]

LIST_WBANDA = ["Line-in", "AM", "FM"] + LIST_WBANDB

LIST_SQL = ["Open"] + ["%s" % x for x in range(1, 10)]

_STEP_LIST = [2.5, 5., 6.25, 8.33, 9., 10., 12.5, 15., 20., 25., 50., 100.,

              200.]

LIST_STEP = ["Auto"] + ["{0:.2f} KHz".format(x) for x in _STEP_LIST]

LIST_SMODE = ["F-1", "F-2"]

# DTMF settings lists

LIST_TTDKEY = ["D code"] + ["Send delay %s s" % x for x in range(1, 17)]

LIST_TT200 = ["%s ms" % x for x in range(50, 210, 10)]

LIST_TT1000 = ["%s ms" % x for x in range(100, 1050, 50)]

LIST_TTSIG = ["Code squelch", "Select call"]

LIST_TTAUTORST = ["Off"] + ["%s s" % x for x in range(1, 16)]

LIST_TTGRPCODE = ["Off"] + list("ABCD*#")

LIST_TTINTCODE = DTMF_CHARS

LIST_TTALERT = ["Off", "Alert tone", "Transpond", "Transpond-ID code",

                "Transpond-transpond code"]

LIST_TTAUTOD = ["%s" % x for x in range(1, 10)]

# valid chars on the LCD

VALID_CHARS = chirp_common.CHARSET_ALPHANUMERIC + \

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

# Power Levels

POWER_LEVELS = [chirp_common.PowerLevel("Low", watts=5),

                chirp_common.PowerLevel("Mid", watts=20),

                chirp_common.PowerLevel("High", watts=50)]

# B-TECH UV-50X3 id string

UV50X3_id = b"VGC6600MD"

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 _check_for_double_ack(radio):

    radio.pipe.timeout = 0.005

    c = radio.pipe.read(1)

    radio.pipe.timeout = STIMEOUT

    if c and c != b'\x06':

        _exit_program_mode(radio)

        raise errors.RadioError('Expected nothing or ACK, got %r' % c)

def _rawrecv(radio, amount):

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

    data = b""

    try:

        data = radio.pipe.read(amount)

    except:

        _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 data 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:

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

def _make_frame(cmd, addr, length, data=""):

    """Pack the info in the headder format"""

    frame = struct.pack(">BHB", ord(cmd), addr, length)

    # add the data if set

    if len(data) != 0:

        frame += data

    # return the data

    return frame

def _recv(radio, addr, length=BLOCK_SIZE):

    """Get data from the radio """

    # read 4 bytes of header

    hdr = _rawrecv(radio, 4)

    # check for unexpected extra command byte

    c, a, l = struct.unpack(">BHB", hdr)

    if hdr[0:2] == b"WW" and a != addr:

        # extra command byte detected

        # throw away the 1st byte and add the next byte in the buffer

        hdr = hdr[1:] + _rawrecv(radio, 1)

    # read 64 bytes (0x40) of data

    data = _rawrecv(radio, (BLOCK_SIZE))

    # DEBUG

    LOG.info("Response:")

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

    c, a, l = struct.unpack(">BHB", hdr)

    if a != addr or l != length or c != ord(b"W"):

        _exit_program_mode(radio)

        LOG.error("Invalid answer for block 0x%04x:" % addr)

        LOG.debug("CMD: %s  ADDR: %04x  SIZE: %02x" % (c, a, l))

        raise errors.RadioError("Unknown response from the radio")

    return data

def _do_ident(radio):

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

    #  set the serial discipline

    radio.pipe.baudrate = 115200

    radio.pipe.parity = "N"

    radio.pipe.timeout = STIMEOUT

    # flush input buffer

    _clean_buffer(radio)

    magic = b"V66LINK"

    _rawsend(radio, magic)

    # Ok, get the ident string

    ident = _rawrecv(radio, 9)

    # check if ident is OK

    if ident != radio.IDENT:

        # bad ident

        msg = "Incorrect model ID, got this:"

        msg += util.hexprint(ident)

        LOG.debug(msg)

        raise errors.RadioError("Radio identification failed.")

    # DEBUG

    LOG.info("Positive ident, got this:")

    LOG.debug(util.hexprint(ident))

    return True

def _exit_program_mode(radio):

    endframe = b"\x45"

    _rawsend(radio, endframe)

def _download(radio):

    """Get the memory map"""

    # put radio in program mode and identify it

    _do_ident(radio)

    # 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_frame(b"R", addr, BLOCK_SIZE)

        # DEBUG

        LOG.info("Request sent:")

        LOG.debug(util.hexprint(frame))

        # sending the read request

        _rawsend(radio, frame)

        # now we read

        d = _recv(radio, addr)

        # aggregate the data

        data += d

        # 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"""

    MEM_SIZE = 0x7000

    # put radio in program mode and identify it

    _do_ident(radio)

    # 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 start here

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

        # sending the data

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

        frame = _make_frame(b"W", addr, BLOCK_SIZE, data)

        _rawsend(radio, frame)

        # receiving the response

        ack = _rawrecv(radio, 1)

        if ack != b"\x06":

            _exit_program_mode(radio)

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

            raise errors.RadioError(msg)

        _check_for_double_ack(radio)

        # UI Update

        status.cur = addr // BLOCK_SIZE

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

        radio.status_fn(status)

    _exit_program_mode(radio)

def model_match(cls, data):

    """Match the opened/downloaded image to the correct version"""

    rid = data[0x6140:0x6148]

    if rid in cls.IDENT:

        return True

    return False

def _split(rf, f1, f2):

    """Returns False if the two freqs are in the same band (no split)

    or True otherwise"""

    # determine if the two freqs are in the same band

    for low, high in rf.valid_bands:

        if f1 >= low and f1 <= high and \

                f2 >= low and f2 <= high:

            # if the two freqs are on the same Band this is not a split

            return False

    # if you get here is because the freq pairs are split

    return True

class VGCStyleRadio(chirp_common.CloneModeRadio,

                    chirp_common.ExperimentalRadio):

    """BTECH's UV-50X3"""

    VENDOR = "BTECH"

    NEEDS_COMPAT_SERIAL = False

    _air_range = (108000000, 136000000)

    _vhf_range = (136000000, 174000000)

    _vhf2_range = (174000000, 250000000)

    _220_range = (222000000, 225000000)

    _gen1_range = (300000000, 400000000)

    _uhf_range = (400000000, 480000000)

    _gen2_range = (480000000, 520000000)

    _upper = 499

    MODEL = ""

    IDENT = ""

    @classmethod

    def get_prompts(cls):

        rp = chirp_common.RadioPrompts()

        rp.experimental = \

            ('The UV-50X3 driver is a beta version.\n'

             '\n'

             'Please save an unedited copy of your first successful\n'

             'download to a CHIRP Radio Images(*.img) file.'

             )

        rp.pre_download = _(

            "Follow this instructions to download your info:\n"

            "1 - Turn off your radio\n"

            "2 - Connect your interface cable\n"

            "3 - Turn on your radio\n"

            "4 - Do the download of your radio data\n")

        rp.pre_upload = _(

            "Follow this instructions to upload your info:\n"

            "1 - Turn off your radio\n"

            "2 - Connect your interface cable\n"

            "3 - Turn on your radio\n"

            "4 - Do the upload of your radio data\n")

        return rp

    def get_features(self):

        rf = chirp_common.RadioFeatures()

        rf.has_settings = True

        rf.has_bank = False

        rf.has_tuning_step = False

        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 = self.VARIANT == ""

        rf.valid_modes = MODES

        rf.valid_characters = 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_power_levels = POWER_LEVELS

        rf.valid_skips = SKIP_VALUES

        rf.valid_name_length = NAME_LENGTH

        rf.valid_dtcs_codes = DTCS_CODES

        rf.valid_tuning_steps = _STEP_LIST

        rf.valid_bands = [self._air_range,

                          self._vhf_range,

                          self._vhf2_range,

                          self._220_range,

                          self._gen1_range,

                          self._uhf_range,

                          self._gen2_range]

        rf.memory_bounds = (0, self._upper)

        return rf

    def get_sub_devices(self):

        return [UV50X3Left(self._mmap), UV50X3Right(self._mmap)]

    def sync_in(self):

        """Download from radio"""

        try:

            data = _download(self)

        except errors.RadioError:

            # Pass through any real errors we raise

            raise

        except:

            # If anything unexpected happens, make sure we raise

            # a RadioError and log the problem

            LOG.exception('Unexpected error during download')

            raise errors.RadioError('Unexpected error communicating '

                                    'with the radio')

        self._mmap = memmap.MemoryMapBytes(data)

        self.process_mmap()

    def sync_out(self):

        """Upload to radio"""

        try:

            _upload(self)

        except:

            # If anything unexpected happens, make sure we raise

            # a RadioError and log the problem

            LOG.exception('Unexpected error during upload')

            raise errors.RadioError('Unexpected error communicating '

                                    'with the radio')

    def process_mmap(self):

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

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

    def get_raw_memory(self, number):

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

    def decode_tone(self, val):

        """Parse the tone data to decode from mem, it returns:

        Mode (''|DTCS|Tone), Value (None|###), Polarity (None,N,R)"""

        if val.get_raw() == "\xFF\xFF":

            return '', None, None

        val = int(val)

        if val >= 12000:

            a = val - 12000

            return 'DTCS', a, 'R'

        elif val >= 8000:

            a = val - 8000

            return 'DTCS', a, 'N'

        else:

            a = val / 10.0

            return 'Tone', a, None

    def encode_tone(self, memval, mode, value, pol):

        """Parse the tone data to encode from UI to mem"""

        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 _memory_obj(self, suffix=""):

        return getattr(self._memobj, "%s_memory%s" % (self._vfo, suffix))

    def _name_obj(self, suffix=""):

        return getattr(self._memobj, "%s_names%s" % (self._vfo, suffix))

    def _scan_obj(self, suffix=""):

        return getattr(self._memobj, "%s_scanflags%s" % (self._vfo, suffix))

    def _used_obj(self, suffix=""):

        return getattr(self._memobj, "%s_usedflags%s" % (self._vfo, suffix))

    def get_memory(self, number):

        """Get the mem representation from the radio image"""

        bitpos = (1 << (number % 8))

        bytepos = (number / 8)

        _mem = self._memory_obj()[number]

        _names = self._name_obj()[number]

        _scn = self._scan_obj()[bytepos]

        _usd = self._used_obj()[bytepos]

        isused = bitpos & int(_usd)

        isscan = bitpos & int(_scn)

        # Create a high-level memory object to return to the UI

        mem = chirp_common.Memory()

        # Memory number

        mem.number = number

        if not isused:

            mem.empty = True

            return mem

        # Freq and offset

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

        # tx freq can be blank

        if _mem.get_raw()[4] == "\xFF":

            # TX freq not set

            mem.offset = 0

            mem.duplex = "off"

        else:

            # TX feq set

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

            if offset != 0:

                if _split(self.get_features(), mem.freq, int(

                          _mem.txfreq) * 10):

                    mem.duplex = "split"

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

            elif offset < 0:

                mem.offset = abs(offset)

                mem.duplex = "-"

            elif offset > 0:

                mem.offset = offset

                mem.duplex = "+"

            else:

                mem.offset = 0

        # skip

        if not isscan:

            mem.skip = "S"

        # name TAG of the channel

        mem.name = str(_names.name).strip("\xFF")

        # power

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

        # wide/narrow

        mem.mode = MODES[int(_mem.wn)]

        # tone data

        rxtone = txtone = None

        txtone = self.decode_tone(_mem.txtone)

        rxtone = self.decode_tone(_mem.rxtone)

        chirp_common.split_tone_decode(mem, txtone, rxtone)

        # Extra

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

        bcl = RadioSetting("bcl", "Busy channel lockout",

                           RadioSettingValueBoolean(bool(_mem.bcl)))

        mem.extra.append(bcl)

        revert = RadioSetting("revert", "Revert",

                              RadioSettingValueBoolean(bool(_mem.revert)))

        mem.extra.append(revert)

        dname = RadioSetting("dname", "Display name",

                             RadioSettingValueBoolean(bool(_mem.dname)))

        mem.extra.append(dname)

        return mem

    def set_memory(self, mem):

        """Set the memory data in the eeprom img from the UI"""

        bitpos = (1 << (mem.number % 8))

        bytepos = (mem.number / 8)

        _mem = self._memory_obj()[mem.number]

        _names = self._name_obj()[mem.number]

        _scn = self._scan_obj()[bytepos]

        _usd = self._used_obj()[bytepos]

        if mem.empty:

            _usd &= ~bitpos

            _scn &= ~bitpos

            _mem.set_raw("\xFF" * 16)

            _names.name = ("\xFF" * 6)

            return

        else:

            _usd |= bitpos

        # frequency

        _mem.rxfreq = mem.freq / 10

        # duplex

        if mem.duplex == "+":

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

        elif mem.duplex == "-":

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

        elif mem.duplex == "off":

            for i in _mem.txfreq:

                i.set_raw("\xFF")

        elif mem.duplex == "split":

            _mem.txfreq = mem.offset / 10

        else:

            _mem.txfreq = mem.freq / 10

        # tone data

        ((txmode, txtone, txpol), (rxmode, rxtone, rxpol)) = \

            chirp_common.split_tone_encode(mem)

        self.encode_tone(_mem.txtone, txmode, txtone, txpol)

        self.encode_tone(_mem.rxtone, rxmode, rxtone, rxpol)

        # name TAG of the channel

        _names.name = mem.name.rstrip().ljust(6, "\xFF")

        # power level, # default power level is low

        _mem.txp = 0 if mem.power is None else POWER_LEVELS.index(mem.power)

        # wide/narrow

        _mem.wn = MODES.index(mem.mode)

        if mem.skip == "S":

            _scn &= ~bitpos

        else:

            _scn |= bitpos

        # autoset display to display name if filled

        if mem.extra:

            # mem.extra only seems to be populated when called from edit panel

            dname = mem.extra["dname"]

        else:

            dname = None

        if mem.name:

            _mem.dname = True

            if dname and not dname.changed():

                dname.value = True

        else:

            _mem.dname = False

            if dname and not dname.changed():

                dname.value = False

        # resetting unknowns, this has to be set by hand

        _mem.unknown0 = 0

        _mem.unknown1 = 0

        _mem.unknown2 = 0

        _mem.unknown3 = 0