CHIRP

# Copyright 2020 Jiauxn Yang <jiaxun.yang@flygoat.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 3 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/>.

"""SenHaiX 8800 radio management module"""

import struct

import time

import os

import logging

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

from chirp.settings import RadioSetting, RadioSettingGroup, \

                RadioSettingValueBoolean, RadioSettingValueList, \

                RadioSettingValueInteger, RadioSettingValueString, \

                RadioSettingValueFloat, RadioSettingValueMap, RadioSettings

LOG = logging.getLogger(__name__)

MEM_SIZE = 0x1c00

CMD_ACK = "\x06"

ACK_RETRY = 10

BLOCK_SIZE_RX = 64

BLOCK_SIZE_TX = 32

def _rawrecv(radio, amount):

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

    data = ""

    try:

        data = radio.pipe.read(amount)

    except:

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

        raise errors.RadioError(msg)

    if len(data) != amount:

        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 frame

def SHX8800_prep(radio):

    """Prepare radio device for transmission"""

    for _i in range(0, ACK_RETRY):

        try:

            _rawsend(radio, "PROGROM")

            _rawsend(radio, "SHX")

            _rawsend(radio, "U")

            ack = _rawrecv(radio, 1)

            if ack != CMD_ACK:

                raise Exception("Radio did not properly ACK")

            break

        except Exception as inst:

                if _i < ACK_RETRY:

                    LOG.error("No ACK, retrying....")

                    SHX8800_exit(radio)

                    radio.pipe.flush()

                    time.sleep(0.100)

                    continue

                else:

                    raise errors.RadioError(inst)

    _rawsend(radio, "F")

    ident = _rawrecv(radio, 8)

    if len(ident) != 8:

        LOG.debug(util.hexprint(ident))

        raise errors.RadioError("Radio did not send identification")

    LOG.info("Ident: " + util.hexprint(ident))

def SHX8800_exit(radio):

    """Exit programming mode"""

    _rawsend(radio, "E")

def _recv_block(radio, addr, blocksize):

    """Receive a block from the radio ROM"""

    _rawsend(radio, _make_frame("R", addr, blocksize))

    # read 4 bytes of header

    hdr = _rawrecv(radio, 4)

    # read data

    data = _rawrecv(radio, blocksize)

    # DEBUG

    LOG.debug("Response:")

    LOG.debug("\n " + util.hexprint(data))

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

    if a != addr or l != blocksize or c != ord("R"):

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

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

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

    return data

def _write_block(radio, addr, blocksize, data):

    """Write a block to the radio ROM"""

    # Send CMD + Data

    _rawsend(radio, _make_frame("W", addr, blocksize, data))

    # read response

    resp = _rawrecv(radio, 1)

    if resp != CMD_ACK:

        raise errors.RadioError("No ACK from the radio")

def do_download(radio):

    """ The download function """

    SHX8800_prep(radio)

    # UI progress

    status = chirp_common.Status()

    status.cur = 0

    status.max = MEM_SIZE

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

    radio.status_fn(status)

    data = ""

    for addr in range(0x0000, MEM_SIZE, BLOCK_SIZE_RX):

        data += _recv_block(radio, addr, BLOCK_SIZE_RX)

        # UI Update

        status.cur = addr

        radio.status_fn(status)

    SHX8800_exit(radio)

    return memmap.MemoryMap(data)

def do_upload(radio):

    """The upload function"""

    SHX8800_prep(radio)

    # UI progress

    status = chirp_common.Status()

    status.cur = 0

    status.max = MEM_SIZE

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

    radio.status_fn(status)

    for addr in range(0x0000, MEM_SIZE, BLOCK_SIZE_TX):

        _write_block(radio, addr, BLOCK_SIZE_TX,

                    radio._mmap[addr:addr+BLOCK_SIZE_TX])

        # UI Update

        status.cur = addr

        radio.status_fn(status)

    SHX8800_exit(radio)

SHX8800_MEM_FORMAT = """

struct {

  lbcd rxfreq[4];

  lbcd txfreq[4];

  ul16 rxtone;

  ul16 txtone;

  u8 scode;

  u8 pttid;

  u8 power_lvl;

  u8 spare1:1,

     narrow:1,

     spare0:2,

     bcl:1,

     scan:1,

     allow_tx:1,

     fhss:1;

} memory[128];

#seekto 0xc00;

struct {

  char name[16];

} names[128];

#seekto 0x1a00;

struct {

  u8 squelch;

  u8 battery_saver;

  u8 vox;

  u8 auto_bl;

  u8 tdr;

  u8 tot;

  u8 beep;

  u8 voice;

  u8 language;

  u8 dtmfst;

  u8 scan_mode;

  u8 pttid;

  u8 pttlt;

  u8 mdfa;

  u8 mdfb;

  u8 bcl;

  u8 autolk;

  u8 almod;

  u8 alsnd;

  u8 tx_under_tdr_start;

  u8 ste;

  u8 rpste;

  u8 rptrl;

  u8 roger;

  u8 unknown;

  u8 fmradio;

  u8 workmodeb:4,

     workmodea:4;

  u8 keylock;

  u8 unknown1[4];

  u8 voxdelay;

  u8 menu_timeout;

  u8 micgain;

} settings;

#seekto 0x1a40;

struct {

  u8 freq[8];

  ul16 rxtone;

  ul16 txtone;

  u8 unknown[2];

  u8 unused2:2,

     sftd:2,

     scode:4;

  u8 unknown1;

  u8 txpower;

  u8 widenarr:1,

     unknown2:4

     fhss:1;

  u8 band;

  u8 unknown3:5,

     step:3;

  u8 unknown4;

  u8 offset[6];

} vfoa;

#seekto 0x1a60;

struct {

  u8 freq[8];

  ul16 rxtone;

  ul16 txtone;

  u8 unknown[2];

  u8 unused2:2,

     sftd:2,

     scode:4;

  u8 unknown1;

  u8 txpower;

  u8 widenarr:1,

     unknown2:4

     fhss:1;

  u8 band;

  u8 unknown3:5,

     step:3;

  u8 unknown4;

  u8 offset[6];

} vfob;

#seekto 0x1a80;

struct {

    u8 sidekey;

    u8 sidekeyl;

} keymaps;

#seekto 0x1b00;

struct {

  u8 code[5];

  u8 unused[11];

} pttid[15];

struct {

  u8 code[5];

  u8 group_code;

  u8 aniid;

  u8 dtmfon;

  u8 dtmfoff;

} ani;

"""

SHX8800_POWER_LEVELS = [chirp_common.PowerLevel("High", watts=5.00),

                     chirp_common.PowerLevel("Low",  watts=1.00)]

SHX8800_DTCS = sorted(chirp_common.DTCS_CODES + [645])

AUTOBL_LIST = ["OFF", "5 sec", "10 sec", "15 sec", "20 sec", "30 sec", "1 min", "2 min", "3 min"]

TOT_LIST = ["OFF"] + ["%s sec" % x for x in range(30, 270, 30)]

VOX_LIST = ["OFF"] + ["%s" % x for x in range(1, 4)]

BANDWIDTH_LIST = ["Wide", "Narrow"]

LANGUAGE_LIST = ["English", "Chinese"]

DTMFST_LIST = ["OFF", "DT-ST", "ANI-ST", "DT+ANI"]

SCAN_MODE_LIST = ["TO", "CO", "SE"]

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

PTTLT_LIST = ["%s ms" % x for x in range(0, 31)]

MODE_LIST = ["CH + Name", "CH + Frequency"]

ALMOD_LIST = ["SITE", "TOME", "CODE"]

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

STEDELAY_LIST = ["%s ms" % x for x in range(0, 1100, 100)]

WORKMODE_LIST = ["VFO", "CH"]

VOX_DELAY_LIST = ["%s ms" % x for x in range(500, 2100, 100)]

MENU_TIMEOUT_LIST = ["%s sec" % x for x in range(5, 65, 5)]

MICGAIN_LIST = ["%s" % x for x in range(1, 6, 1)]

DTMFSPEED_LIST = ["%s ms" % x for x in range(50, 550, 50)]

PTTIDCODE_LIST = ["%s" % x for x in range(1, 16)]

STEPS = [2.5, 5.0, 6.25, 10.0, 12.5, 25.0]

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

TXPOWER_LIST = ["High", "Low"]

SHIFTD_LIST = ["Off", "+", "-"]

KEY_FUNCTIONS = [("Monitor", 5), ("Broadcast FM Radio", 7), ("Tx Power Switch", 10), ("Scan", 28), ("Match", 29)]

@directory.register

class SenHaiX8800Radio(chirp_common.CloneModeRadio):

    """SenHaiX 8800"""

    VENDOR = "SenHaiX"

    MODEL = "8800"

    BAUD_RATE = 9600

    @classmethod

    def get_prompts(cls):

        rp = chirp_common.RadioPrompts()

        rp.experimental = \

            ('This driver is experimental.\n'

             '\n'

             'Please keep a copy of your memories with the original software '

             'if you treasure them, this driver is new and may contain'

             ' bugs.\n'

             'It is known that cloning progress is not perfect. If stucking '

             'or error happens, please power cycle your radio before retry.'

             '\n'

             )

        return rp

    def get_features(self):

        rf = chirp_common.RadioFeatures()

        rf.has_settings = True

        rf.has_bank = False

        rf.has_cross = True

        rf.has_rx_dtcs = True

        rf.has_tuning_step = False

        rf.can_odd_split = True

        rf.valid_name_length = 7

        rf.valid_characters = chirp_common.CHARSET_ASCII

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

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

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

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

        rf.valid_power_levels = SHX8800_POWER_LEVELS

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

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

        rf.valid_tuning_steps = STEPS

        rf.valid_bands = [(100000000, 176000000), (400000000, 521000000)]

        rf.memory_bounds = (0, 127)

        return rf

    def sync_in(self):

        self._mmap = do_download(self)

        self.process_mmap()

    def sync_out(self):

        do_upload(self)

    def process_mmap(self):

        self._memobj = bitwise.parse(SHX8800_MEM_FORMAT, self._mmap)

    def _is_txinh(self, _mem):

        return _mem.allow_tx == False

    def _get_mem(self, number):

        return self._memobj.memory[number]

    def _get_nam(self, number):

        return self._memobj.names[number]

    def get_raw_memory(self, number):

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

    def get_memory(self, number):

        _mem = self._get_mem(number)

        _nam = self._get_nam(number)

        mem = chirp_common.Memory()

        mem.number = number

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

            mem.empty = True

            return mem

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

        if self._is_txinh(_mem):

            mem.duplex = "off"

            mem.offset = 0

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

            mem.duplex = ""

            mem.offset = 0

        elif abs(int(_mem.rxfreq) * 10 - int(_mem.txfreq) * 10) > 70000000:

            mem.duplex = "split"

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

        else:

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

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

        for char in _nam.name:

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

                char = " "

            mem.name += str(char)

        mem.name = mem.name.rstrip()

        dtcs_pol = ["N", "N"]

        if _mem.txtone in [0, 0xFFFF]:

            txmode = ""

        elif _mem.txtone >= 0x0258:

            txmode = "Tone"

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

        elif _mem.txtone <= 0x0258:

            txmode = "DTCS"

            if _mem.txtone > 0x69:

                index = _mem.txtone - 0x6A

                dtcs_pol[0] = "R"

            else:

                index = _mem.txtone - 1

            mem.dtcs = SHX8800_DTCS[index]

        else:

            LOG.warn("Bug: txtone is %04x" % _mem.txtone)

        if _mem.rxtone in [0, 0xFFFF]:

            rxmode = ""

        elif _mem.rxtone >= 0x0258:

            rxmode = "Tone"

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

        elif _mem.rxtone <= 0x0258:

            rxmode = "DTCS"

            if _mem.rxtone >= 0x6A:

                index = _mem.rxtone - 0x6A

                dtcs_pol[1] = "R"

            else:

                index = _mem.rxtone - 1

            mem.rx_dtcs = SHX8800_DTCS[index]

        else:

            LOG.warn("Bug: rxtone is %04x" % _mem.rxtone)

        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"

        elif rxmode or txmode:

            mem.tmode = "Cross"

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

        mem.dtcs_polarity = "".join(dtcs_pol)

        if not _mem.scan:

            mem.skip = "S"

        mem.power = SHX8800_POWER_LEVELS[_mem.power_lvl]

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

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

        rs = RadioSetting("bcl", "bcl",

                          RadioSettingValueBoolean(_mem.bcl))

        mem.extra.append(rs)

        rs = RadioSetting("pttid", "PTT ID",

                          RadioSettingValueList(PTTID_LIST,

                                                PTTID_LIST[_mem.pttid]))

        mem.extra.append(rs)

        rs = RadioSetting("scode", "PTT ID Code",

                          RadioSettingValueList(PTTIDCODE_LIST,

                                                PTTIDCODE_LIST[_mem.scode]))

        mem.extra.append(rs)

        return mem

    def _set_mem(self, number):

        return self._memobj.memory[number]

    def _set_nam(self, number):

        return self._memobj.names[number]

    def set_memory(self, mem):

        _mem = self._get_mem(mem.number)

        _nam = self._get_nam(mem.number)

        if mem.empty:

            _mem.set_raw("\xff" * 16)

            _nam.set_raw("\xff" * 16)

            return

        was_empty = False

        # same method as used in get_memory to find

        # out whether a raw memory is empty

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

            was_empty = True

            LOG.debug("SenHaiX 8800: this mem was empty")

        else:

            LOG.debug("mem was not empty, memorize extra-settings")

            prev_bcl = _mem.bcl.get_value()

            prev_scode = _mem.scode.get_value()

            prev_pttid = _mem.pttid.get_value()

        _mem.set_raw("\x00" * 16)

        _mem.rxfreq = mem.freq / 10

        _mem.allow_tx = True

        if mem.duplex == "off":

            _mem.allow_tx = False

            _mem.txfreq = mem.offset / 10

        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

        _namelength = self.get_features().valid_name_length

        for i in range(_namelength):

            try:

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

            except IndexError:

                _nam.name[i] = "\xFF"

        rxmode = txmode = ""

        if mem.tmode == "Tone":

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

            _mem.rxtone = 0

        elif mem.tmode == "TSQL":

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

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

        elif mem.tmode == "DTCS":

            rxmode = txmode = "DTCS"

            _mem.txtone = SHX8800_DTCS.index(mem.dtcs) + 1

            _mem.rxtone = SHX8800_DTCS.index(mem.dtcs) + 1

        elif mem.tmode == "Cross":

            txmode, rxmode = mem.cross_mode.split("->", 1)

            if txmode == "Tone":

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

            elif txmode == "DTCS":

                _mem.txtone = SHX8800_DTCS.index(mem.dtcs) + 1

            else:

                _mem.txtone = 0

            if rxmode == "Tone":

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

            elif rxmode == "DTCS":

                _mem.rxtone = SHX8800_DTCS.index(mem.rx_dtcs) + 1

            else:

                _mem.rxtone = 0

        else:

            _mem.rxtone = 0

            _mem.txtone = 0

        if txmode == "DTCS" and mem.dtcs_polarity[0] == "R":

            _mem.txtone += 0x69

        if rxmode == "DTCS" and mem.dtcs_polarity[1] == "R":

            _mem.rxtone += 0x69

        _mem.scan = mem.skip != "S"

        _mem.narrow = mem.mode == "NFM"

        _mem.power_lvl = SHX8800_POWER_LEVELS.index(mem.power)

        if not was_empty:

            # restoring old extra-settings

            _mem.bcl.set_value(prev_bcl)

            _mem.scode.set_value(prev_scode)

            _mem.pttid.set_value(prev_pttid)

        for setting in mem.extra:

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

    def _get_settings(self):

        _ani = self._memobj.ani

        _settings = self._memobj.settings

        _vfoa = self._memobj.vfoa

        _vfob = self._memobj.vfob

        _keymaps = self._memobj.keymaps

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

        advanced = RadioSettingGroup("advanced", "Advanced Settings")

        workmode = RadioSettingGroup("workmode", "Work Mode Settings")

        keymaps = RadioSettingGroup("keymaps", "KeyMaps")

        dtmf = RadioSettingGroup("dtmf", "DTMF Settings")

        group = RadioSettings(basic, advanced, workmode, keymaps, dtmf)

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

                          RadioSettingValueInteger(0, 5, _settings.squelch))

        basic.append(rs)

        rs = RadioSetting("battery_saver", "Battery Save",

                        RadioSettingValueBoolean(_settings.battery_saver))

        advanced.append(rs)

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

                          RadioSettingValueList(

                          VOX_LIST, VOX_LIST[_settings.vox]))

        basic.append(rs)

        rs = RadioSetting("auto_bl", "Auto Backlight Timeout",

                          RadioSettingValueList(

                              AUTOBL_LIST, AUTOBL_LIST[_settings.auto_bl]))

        advanced.append(rs)

        rs = RadioSetting("tot", "TX Timeout Timer",

                          RadioSettingValueList(

                              TOT_LIST, TOT_LIST[_settings.tot]))

        basic.append(rs)

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

                          RadioSettingValueBoolean(_settings.beep))

        basic.append(rs)

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

                          RadioSettingValueBoolean(_settings.voice))

        advanced.append(rs)

        rs = RadioSetting("language", "Language",

                          RadioSettingValueList(

                          LANGUAGE_LIST, LANGUAGE_LIST[_settings.language]))

        advanced.append(rs)

        rs = RadioSetting("mdfa", "Display Mode (A)",

                            RadioSettingValueList(

                            MODE_LIST, MODE_LIST[_settings.mdfa]))

        basic.append(rs)

        rs = RadioSetting("mdfb", "Display Mode (B)",

                            RadioSettingValueList(

                            MODE_LIST, MODE_LIST[_settings.mdfb]))

        basic.append(rs)

        rs = RadioSetting("scan_mode", "Scan Mode",

                            RadioSettingValueList(

                            SCAN_MODE_LIST, SCAN_MODE_LIST[_settings.scan_mode]))

        basic.append(rs)

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

                          RadioSettingValueBoolean(_settings.bcl))

        advanced.append(rs)

        rs = RadioSetting("autolk", "Automatic Key Lock",

                            RadioSettingValueBoolean(_settings.autolk))

        advanced.append(rs)

        rs = RadioSetting("almod", "Alarm Mode",

                          RadioSettingValueList(

                            ALMOD_LIST, ALMOD_LIST[_settings.almod]))

        advanced.append(rs)

        rs = RadioSetting("alsnd", "Alarm Sound",

                          RadioSettingValueBoolean(_settings.alsnd))

        advanced.append(rs)

        rs = RadioSetting("ste", "Squelch Tail Eliminate (HT to HT)",

                          RadioSettingValueBoolean(_settings.ste))

        advanced.append(rs)

        rs = RadioSetting("rpste", "Squelch Tail Eliminate (repeater)",

                          RadioSettingValueList(

                              RPSTE_LIST, RPSTE_LIST[_settings.rpste]))

        advanced.append(rs)

        rs = RadioSetting("rptrl", "STE Repeater Delay",

                          RadioSettingValueList(

                              STEDELAY_LIST, STEDELAY_LIST[_settings.rptrl]))

        advanced.append(rs)

        rs = RadioSetting("fmradio", "Disable Broadcast FM Radio",

                          RadioSettingValueBoolean(_settings.fmradio))

        advanced.append(rs)

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

                            RadioSettingValueBoolean(_settings.keylock))

        advanced.append(rs)

        rs = RadioSetting("voxdelay", "VOX Delay",

                            RadioSettingValueList(

                               VOX_DELAY_LIST,

                               VOX_DELAY_LIST[_settings.voxdelay]))

        advanced.append(rs)

        rs = RadioSetting("menu_timeout", "Menu Timeout",

                            RadioSettingValueList(

                               MENU_TIMEOUT_LIST,

                               MENU_TIMEOUT_LIST[_settings.menu_timeout]))

        advanced.append(rs)

        rs = RadioSetting("micgain", "Mic Gain",

                            RadioSettingValueList(

                               MICGAIN_LIST,

                               MICGAIN_LIST[_settings.micgain]))

        advanced.append(rs)

        for entry in KEY_FUNCTIONS:

            if entry[1] == _keymaps.sidekey:

                rs = RadioSetting("keymaps.sidekey", "Side Key Short Press",

                                    RadioSettingValueMap(KEY_FUNCTIONS, _keymaps.sidekey))

                keymaps.append(rs)

        for entry in KEY_FUNCTIONS:

            if entry[1] == _keymaps.sidekeyl:

                rs = RadioSetting("keymaps.sidekeyl", "Side Key Long Press",

                                RadioSettingValueMap(KEY_FUNCTIONS, _keymaps.sidekeyl))

                keymaps.append(rs)

        rs = RadioSetting("workmodea", "Work Mode (A)",

                            RadioSettingValueList(

                                WORKMODE_LIST,

                                WORKMODE_LIST[_settings.workmodea]))

        workmode.append(rs)

        rs = RadioSetting("workmodeb", "Work Mode (B)",

                            RadioSettingValueList(

                                WORKMODE_LIST,

                                WORKMODE_LIST[_settings.workmodeb]))

        workmode.append(rs)

        def convert_bytes_to_freq(bytes):

            real_freq = 0

            for byte in bytes:

                real_freq = (real_freq * 10) + byte

            return chirp_common.format_freq(real_freq * 10)

        def my_validate(value):

            value = chirp_common.parse_freq(value)

            if 17400000 <= value and value < 40000000:

                msg = ("Can't be between 174.00000-400.00000")

                raise InvalidValueError(msg)

            return chirp_common.format_freq(value)

        def apply_freq(setting, obj):

            value = chirp_common.parse_freq(str(setting.value)) / 10

            obj.band = value >= 40000000

            for i in range(7, -1, -1):

                obj.freq[i] = value % 10

                value /= 10

        val1a = RadioSettingValueString(0, 10,

                                        convert_bytes_to_freq(_vfoa.freq))

        val1a.set_validate_callback(my_validate)

        rs = RadioSetting("vfoa.freq", "VFO A Frequency", val1a)

        rs.set_apply_callback(apply_freq, _vfoa)

        workmode.append(rs)

        val1b = RadioSettingValueString(0, 10,

                                        convert_bytes_to_freq(_vfob.freq))

        val1b.set_validate_callback(my_validate)

        rs = RadioSetting("vfob.freq", "VFO B Frequency", val1b)

        rs.set_apply_callback(apply_freq, _vfob)

        workmode.append(rs)

        rs = RadioSetting("vfoa.sftd", "VFO A Shift",

                            RadioSettingValueList(

                                SHIFTD_LIST, SHIFTD_LIST[_vfoa.sftd]))

        workmode.append(rs)

        rs = RadioSetting("vfob.sftd", "VFO B Shift",

                            RadioSettingValueList(

                                SHIFTD_LIST, SHIFTD_LIST[_vfob.sftd]))

        workmode.append(rs)

        def convert_bytes_to_offset(bytes):

            real_offset = 0

            for byte in bytes:

                real_offset = (real_offset * 10) + byte

            return chirp_common.format_freq(real_offset * 100)

        def apply_offset(setting, obj):

            value = chirp_common.parse_freq(str(setting.value)) / 100

            for i in range(5, -1, -1):

                obj.offset[i] = value % 10

                value /= 10

        val1a = RadioSettingValueString(

            0, 10, convert_bytes_to_offset(_vfoa.offset))