# HG changeset patch
# User Mel Terechenok <melvin.terechenok@gmail.com>
# Date 1660997164 14400
#      Sat Aug 20 08:06:04 2022 -0400
# Node ID 3c01bad983e3b295177f18f83a104c0506f5b116
# Parent  0a7f0562b8c59ec96ee4f9724818694094a1f7c5
[KG-935G] Add Support for Wouxun KG-935G GMRS Radio - New Model #9489

New Driver addressing new model request

New Model #9489

diff --git a/chirp/drivers/kg935g.py b/chirp/drivers/kg935g.py
new file mode 100644
--- /dev/null
+++ b/chirp/drivers/kg935g.py
@@ -0,0 +1,1547 @@
+# Wouxun KG-935G Driver
+# Updated by:
+# melvin.terechenok@gmail.com
+
+# Copyright 2019 Pavel Milanes CO7WT <pavelmc@gmail.com>
+#
+# Based on the work of Krystian Struzik <toner_82@tlen.pl>
+# who figured out the crypt used and made possible the
+# Wuoxun KG-UV8D Plus driver, in which this work is based.
+#
+# 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/>.
+
+"""Wouxun KG-935G radio management module"""
+
+import time
+import os
+import logging
+
+from chirp import util, chirp_common, bitwise, memmap, errors, directory
+from chirp.settings import RadioSetting, RadioSettingGroup, \
+    RadioSettingValueBoolean, RadioSettingValueList, \
+    RadioSettingValueInteger, RadioSettingValueString, \
+    RadioSettingValueFloat, RadioSettingValueMap, RadioSettings
+
+
+LOG = logging.getLogger(__name__)
+
+CMD_ID = 128    # \x80
+CMD_END = 129   # \x81
+CMD_RD = 130    # \82
+CMD_WR = 131    # \83
+
+MEM_VALID = 158
+
+AB_LIST = ["A", "B"]
+STEPS = [2.5, 5.0, 6.25, 10.0, 12.5, 25.0, 50.0, 100.0]
+STEP_LIST = [str(x) for x in STEPS]
+ROGER_LIST = ["Off", "Begin", "End", "Both"]
+TIMEOUT_LIST = ["Off"] + [str(x) + "s" for x in range(15, 901, 15)]
+VOX_LIST = ["Off"] + ["%s" % x for x in range(1, 10)]
+BANDWIDTH_LIST = ["Narrow", "Wide"]
+VOICE_LIST = ["Off", "On"]
+LANGUAGE_LIST = ["Chinese", "English"]
+SCANMODE_LIST = ["TO", "CO", "SE"]
+# MRT - EDIT FOR 935G
+PFKEYLONG_LIST = ["undef", "FRQ2-PTT", "Selec Call", "Scan", "Flashlight",
+                  "Alarm", "SOS", "FM Radio", "Moni", "Strobe", "Weather",
+                  "Tlk A", "Reverse", "CTC Scan", "DCS Scan", "BRT"]
+PFKEYSHORT_LIST = ["undef", "Scan", "Flashlight", "Alarm", "SOS", "FM Radio",
+                   "Moni", "Strobe", "Weather", "Tlk A", "Reverse",
+                   "CTC Scan", "DCS Scan", "BRT"]
+#
+WORKMODE_LIST = ["VFO", "Ch.Number.", "Ch.Freq.", "Ch.Name"]
+BACKLIGHT_LIST = ["Always On"] + [str(x) + "s" for x in range(1, 21)] + \
+    ["Always Off"]
+OFFSET_LIST = ["+", "-"]
+PONMSG_LIST = ["MSG - Bitmap", "Battery Volts"]
+SPMUTE_LIST = ["QT", "QT+DTMF", "QT*DTMF"]
+DTMFST_LIST = ["OFF", "DTMF", "ANI", "DTMF+ANI"]
+# DTMF_TIMES = [str(x) + "ms" for x in range(0, 501, 10)]
+DTMF_TIMES = [('%dms' % dtmf, (dtmf / 10)) for dtmf in range(50, 501, 10)]
+ALERTS = [1750, 2100, 1000, 1450]
+ALERTS_LIST = [str(x) for x in ALERTS]
+PTTID_LIST = ["BOT", "EOT", "Both"]
+LIST_10 = ["Off"] + ["%s" % x for x in range(1, 11)]
+SCANGRP_LIST = ["All"] + ["%s" % x for x in range(1, 11)]
+SCQT_LIST = ["Decoder", "Encoder", "All"]
+SMUTESET_LIST = ["Off", "Tx", "Rx", "Tx+Rx"]
+POWER_LIST = ["Lo", "Mid", "Hi"]
+HOLD_TIMES = ["Off"] + ["%s" % x for x in range(100, 5001, 100)]
+RPTMODE_LIST = ["Radio", "Repeater"]
+# MRT ADDED NEW LISTS
+CALLGROUP_LIST = [str(x) for x in range(1, 21)]
+THEME_LIST = ["White-1", "White-2", "Black-1", "Black-2"]
+DSPBRTSBY_LIST = ["OFF", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10"]
+DSPBRTACT_MAP = [("1", 1), ("2", 2), ("3", 3), ("4", 4), ("5", 5),
+                 ("6", 6), ("7", 7), ("8", 8), ("9", 9), ("10", 10)]
+TONESCANSAVELIST = ["Rx", "Tx", "Tx/Rx"]
+# PTTDELAY_LIST = [str(x) + "ms" for x in range(0, 3001, 100)]
+PTTDELAY_TIMES = [('%dms' % pttdelay,
+                  (pttdelay / 100)) for pttdelay in range(100, 3001, 100)]
+SCRAMBLE_LIST = ["OFF"] + [str(x) for x in range(1, 9)]
+ONOFF_LIST = ["OFF", "ON"]
+# MRT - Map CTCSS Tones -  Value in mem is hex value of
+# (ctcss tone * 10) + 0x8000
+# MRT - 0x8000 is for CTCSS tones
+# MRT - Map DCS Tones -  Value in mem is hex representation of
+# DCS Tone# in Octal + either 0x4000 or 0x6000 for polarity
+# MRT - 0x4000 is for DCS n tones
+# MRT - 0x6000 is for DCS i tones
+TONE_MAP = [('Off', 0x0000)] + \
+           [('%.1f' % tone,
+            int(0x8000 + tone * 10)) for tone in chirp_common.TONES] + \
+           [('D%03dn' % tone, int(0x4000 + int(str(tone), 8)))
+               for tone in chirp_common.DTCS_CODES] + \
+           [('D%03di' % tone, int(0x6000 + int(str(tone), 8)))
+               for tone in chirp_common.DTCS_CODES]
+
+
+# memory slot 0 is not used, start at 1 (so need 1000 slots, not 999)
+# structure elements whose name starts with x are currently unidentified
+
+# MRT made Power = 4 bits to handle 935G's 3 power levels and
+# to prevent display errors
+# MRT beta 1.3 - updates to structure to match KG935G Custom
+# programming SW configuration settings, FM Radio presets, Key Settings
+# MRT beta 1.4 - modified some value names and merged FM Radio
+# memories with other settings to resolve errors in UI implementation
+_MEM_FORMAT = """
+    #seekto 0x0044;
+    struct {
+        u32    rx_start;
+        u32    rx_stop;
+        u32    tx_start;
+        u32    tx_stop;
+    } uhf_limits;
+
+    #seekto 0x0054;
+    struct {
+        u32    rx_start;
+        u32    rx_stop;
+        u32    tx_start;
+        u32    tx_stop;
+    } vhf_limits;
+
+    #seekto 0x0400;
+    struct {
+        char     oem1[8];
+        char     unknown[2];
+        u8     unknown2[10];
+        u8     unknown3[10];
+        u8     unknown4[8];
+        char     oem2[10];
+        u8     version[6];
+        char     date[8];
+        u8     unknown5[2];
+        char     model[8];
+    } oem_info;
+
+    #seekto 0x0480;
+    struct {
+        u16    Group_lower1;
+        u16    Group_upper1;
+        u16    Group_lower2;
+        u16    Group_upper2;
+        u16    Group_lower3;
+        u16    Group_upper3;
+        u16    Group_lower4;
+        u16    Group_upper4;
+        u16    Group_lower5;
+        u16    Group_upper5;
+        u16    Group_lower6;
+        u16    Group_upper6;
+        u16    Group_lower7;
+        u16    Group_upper7;
+        u16    Group_lower8;
+        u16    Group_upper8;
+        u16    Group_lower9;
+        u16    Group_upper9;
+        u16    Group_lower10;
+        u16    Group_upper10;
+    } scan_groups;
+
+    #seekto 0x0500;
+    struct {
+        u8    call_code_1[6];
+        u8    call_code_2[6];
+        u8    call_code_3[6];
+        u8    call_code_4[6];
+        u8    call_code_5[6];
+        u8    call_code_6[6];
+        u8    call_code_7[6];
+        u8    call_code_8[6];
+        u8    call_code_9[6];
+        u8    call_code_10[6];
+        u8    call_code_11[6];
+        u8    call_code_12[6];
+        u8    call_code_13[6];
+        u8    call_code_14[6];
+        u8    call_code_15[6];
+        u8    call_code_16[6];
+        u8    call_code_17[6];
+        u8    call_code_18[6];
+        u8    call_code_19[6];
+        u8    call_code_20[6];
+    } call_groups;
+
+    #seekto 0x0580;
+    struct {
+        char    call_name1[6];
+        char    call_name2[6];
+        char    call_name3[6];
+        char    call_name4[6];
+        char    call_name5[6];
+        char    call_name6[6];
+        char    call_name7[6];
+        char    call_name8[6];
+        char    call_name9[6];
+        char    call_name10[6];
+        char    call_name11[6];
+        char    call_name12[6];
+        char    call_name13[6];
+        char    call_name14[6];
+        char    call_name15[6];
+        char    call_name16[6];
+        char    call_name17[6];
+        char    call_name18[6];
+        char    call_name19[6];
+        char    call_name20[6];
+    } call_names;
+
+
+    #seekto 0x0600;
+    struct {
+        u16    FM_radio1;
+        u16    FM_radio2;
+        u16    FM_radio3;
+        u16    FM_radio4;
+        u16    FM_radio5;
+        u16    FM_radio6;
+        u16    FM_radio7;
+        u16    FM_radio8;
+        u16    FM_radio9;
+        u16    FM_radio10;
+        u16    FM_radio11;
+        u16    FM_radio12;
+        u16    FM_radio13;
+        u16    FM_radio14;
+        u16    FM_radio15;
+        u16    FM_radio16;
+        u16    FM_radio17;
+        u16    FM_radio18;
+        u16    FM_radio19;
+        u16    FM_radio20;
+        u16 unknown_pad_x0640[235];
+        u8 unknown07fe;
+        u8 unknown07ff;
+        u8      ponmsg;
+        char    dispstr[15];
+        u8 unknown0810;
+        u8 unknown0811;
+        u8 unknown0812;
+        u8 unknown0813;
+        u8 unknown0814;
+        u8      voice;
+        u8      timeout;
+        u8      toalarm;
+        u8      channel_menu;
+        u8      power_save;
+        u8      autolock;
+        u8      keylock;
+        u8      beep;
+        u8      stopwatch;
+        u8      vox;
+        u8      scan_rev;
+        u8      backlight;
+        u8      roger_beep;
+        char      mode_sw_pwd[6];
+        char      reset_pwd[6];
+        u16     pri_ch;
+        u8      ani_sw;
+        u8      ptt_delay;
+        u8      ani_code[6];
+        u8      dtmf_st;
+        u8      BCL_A;
+        u8      BCL_B;
+        u8      ptt_id;
+        u8      prich_sw;
+        u8 unknown083d;
+        u8 unknown083e;
+        u8 unknown083f;
+        u8      alert;
+        u8      pf1_shrt;
+        u8      pf1_long;
+        u8      pf2_shrt;
+        u8      pf2_long;
+        u8 unknown0845;
+        u8      work_mode_a;
+        u8      work_mode_b;
+        u8      dtmf_tx_time;
+        u8      dtmf_interval;
+        u8      main_band;
+        u16      work_ch_a;
+        u16      work_ch_b;
+        u8 unknown084f;
+        u8 unknown0850;
+        u8 unknown0851;
+        u8 unknown0852;
+        u8 unknown0853;
+        u8 unknown0854;
+        u8 unknown0855;
+        u8 unknown0856;
+        u8 unknown0857;
+        u8 unknown0858;
+        u8 unknown0859;
+        u8 unknown085a;
+        u8 unknown085b;
+        u8 unknown085c;
+        u8 unknown085d;
+        u8 unknown085e;
+        u8 unknown085f;
+        u8 unknown0860;
+        u8      TDR_single_mode;
+        u8      ring_time;
+        u8      ScnGrpA_Act;
+        u8      ScnGrpB_Act;
+        u8 unknown0865;
+        u8      rpt_tone;
+        u8 unknown0867;
+        u8      scan_det;
+        u8      ToneScnSave;
+        u8 unknown086a;
+        u8      smuteset;
+        u8      cur_call_grp;
+        u8      DspBrtAct;
+        u8      DspBrtSby;
+        u8 unknown086f;
+        u8      theme;
+        u8      wxalert;
+        u8      VFO_repeater_a;
+        u8      VFO_repeater_b;
+        u8 unknown0874;
+        u8 unknown0875;
+        u8 unknown0876;
+        u8 unknown0877;
+        u8 unknown0878;
+        u8 unknown0879;
+        u8 unknown087a;
+        u8 unknown087b;
+        u8 unknown087c;
+        u8 unknown087d;
+        u8 unknown087e;
+        u8 unknown087f;
+    } settings;
+
+    #seekto 0x0880;
+    struct {
+        u32     rxfreq;
+        u32     unknown0;
+        u16     rxtone;
+        u16     txtone;
+        u8      scrambler:4,
+                power:4;
+        u8      unknown3:1,
+                unknown5:2,
+                unknown4:1,
+                cmpndr:1,
+                mute_mode:2,
+                iswide:1;
+        u8      step;
+        u8      squelch;
+      } vfoa;
+
+    #seekto 0x08c0;
+    struct {
+        u32     rxfreq;
+        u32     unknown0;
+        u16     rxtone;
+        u16     txtone;
+        u8      scrambler:4,
+                power:4;
+        u8      unknown3:1,
+                unknown5:2,
+                unknown4:1,
+                cmpndr:1,
+                mute_mode:2,
+                iswide:1;
+        u8      step;
+        u8      squelch;
+    } vfob;
+
+    #seekto 0x0900;
+    struct {
+        u32     rxfreq;
+        u32     txfreq;
+        u16     rxtone;
+        u16     txtone;
+        u8      scrambler:4,
+                power:4;
+        u8      unknown3:2,
+                scan_add:1,
+                unknown4:1,
+                compander:1,
+                mute_mode:2,
+                iswide:1;
+        u8      unknown5;
+        u8      unknown6;
+    } memory[1000];
+
+    #seekto 0x4780;
+    struct {
+        u8    name[8];
+                u8    unknown[4];
+    } names[1000];
+
+    #seekto 0x7670;
+    u8          valid[1000];
+    """
+
+# Support for the Wouxun KG-935G radio
+# Serial coms are at 19200 baud
+# The data is passed in variable length records
+# Record structure:
+#  Offset   Usage
+#    0      start of record (\x7c)
+#    1      Command (\x80 Identify \x81 End/Reboot \x82 Read \x83 Write)
+#    2      direction (\xff PC-> Radio, \x00 Radio -> PC)
+#    3      length of payload (excluding header/checksum) (n)
+#    4      payload (n bytes)
+#    4+n+1  checksum - byte sum (% 256) of bytes 1 -> 4+n
+#
+# Memory Read Records:
+# the payload is 3 bytes, first 2 are offset (big endian),
+# 3rd is number of bytes to read
+# Memory Write Records:
+# the maximum payload size (from the Wouxun software) seems to be 66 bytes
+#  (2 bytes location + 64 bytes data).
+
+# MRT 1.2 correct spelling of Wouxon
+
+
+class KGUV8TRadio(chirp_common.Alias):
+    VENDOR = "Wouxun"
+    MODEL = "KG-935G"
+
+
+@directory.register
+class KG935GRadio(chirp_common.CloneModeRadio,
+                  chirp_common.ExperimentalRadio):
+
+    """Wouxun KG-935G"""
+    VENDOR = "Wouxun"
+    MODEL = "KG-935G"
+    _model = "KG-UV8D-B"
+    _file_ident = "935G"
+    BAUD_RATE = 19200
+# MRT - Added Medium Power level for 935G support
+    POWER_LEVELS = [chirp_common.PowerLevel("L", watts=0.5),
+                    chirp_common.PowerLevel("M", watts=4.5),
+                    chirp_common.PowerLevel("H", watts=5.5)]
+    _mmap = ""
+    ALIASES = [KGUV8TRadio, ]
+
+    def _checksum(self, data):
+        cs = 0
+        for byte in data:
+            cs += ord(byte)
+        return chr(cs % 256)
+
+    def _write_record(self, cmd, payload=None):
+        # build the packet
+        _header = '\x7c' + chr(cmd) + '\xff'
+
+        _length = 0
+        if payload:
+            _length = len(payload)
+
+        # update the length field
+        _header += chr(_length)
+
+        if payload:
+            # calculate checksum then add it with the payload
+            # to the packet and encrypt
+            crc = self._checksum(_header[1:] + payload)
+            payload += crc
+            _header += self.encrypt(payload)
+        else:
+            # calculate and add encrypted checksum to the packet
+            crc = self._checksum(_header[1:])
+            _header += self.strxor(crc, '\x57')
+
+        try:
+            self.pipe.write(_header)
+        except Exception, e:
+            raise errors.RadioError("Failed to communicate with radio: %s" % e)
+
+    def _read_record(self):
+        # read 4 chars for the header
+        _header = self.pipe.read(4)
+        if len(_header) != 4:
+            raise errors.RadioError('Radio did not respond')
+        _length = ord(_header[3])
+        _packet = self.pipe.read(_length)
+        _rcs_xor = _packet[-1]
+        _packet = self.decrypt(_packet)
+        _cs = ord(self._checksum(_header[1:] + _packet))
+        # read the checksum and decrypt it
+        _rcs = ord(self.strxor(self.pipe.read(1), _rcs_xor))
+        return (_rcs != _cs, _packet)
+
+    def decrypt(self, data):
+        result = ''
+        for i in range(len(data)-1, 0, -1):
+            result += self.strxor(data[i], data[i - 1])
+        result += self.strxor(data[0], '\x57')
+        return result[::-1]
+
+    def encrypt(self, data):
+        result = self.strxor('\x57', data[0])
+        for i in range(1, len(data), 1):
+            result += self.strxor(result[i - 1], data[i])
+        return result
+
+    def strxor(self, xora, xorb):
+        return chr(ord(xora) ^ ord(xorb))
+
+    # Identify the radio
+    #
+    # A Gotcha: the first identify packet returns a bad checksum, subsequent
+    # attempts return the correct checksum... (well it does on my radio!)
+    #
+    # The ID record returned by the radio also includes the
+    # current frequency range
+    # as 4 bytes big-endian in 10Hz increments
+    #
+    # Offset
+    #  0:10     Model, zero padded (Looks for 'KG-UV8D-B')
+
+    @classmethod
+    def match_model(cls, filedata, filename):
+        id = cls._file_ident
+        return cls._file_ident in filedata[0x426:0x430]
+
+    def _identify(self):
+        """Do the identification dance"""
+        for _i in range(0, 10):
+            self._write_record(CMD_ID)
+            _chksum_err, _resp = self._read_record()
+            LOG.debug("Got:\n%s" % util.hexprint(_resp))
+            if _chksum_err:
+                LOG.error("Checksum error: retrying ident...")
+                time.sleep(0.100)
+                continue
+            LOG.debug("Model %s" % util.hexprint(_resp[0:9]))
+            if _resp[0:9] == self._model:
+                return
+            if len(_resp) == 0:
+                raise Exception("Radio not responding")
+            else:
+                raise Exception("Unable to identify radio")
+
+    def _finish(self):
+        self._write_record(CMD_END)
+
+    def process_mmap(self):
+        self._memobj = bitwise.parse(_MEM_FORMAT, self._mmap)
+
+    def sync_in(self):
+        try:
+            self._mmap = self._download()
+        except errors.RadioError:
+            raise
+        except Exception, e:
+            raise errors.RadioError("Failed to communicate with radio: %s" % e)
+        self.process_mmap()
+
+    def sync_out(self):
+        self._upload()
+
+    # TODO: Load all memory.
+    # It would be smarter to only load the active areas and none of
+    # the padding/unused areas. Padding still need to be investigated.
+    def _download(self):
+        """Talk to a wouxun KG-935G and do a download"""
+        try:
+            self._identify()
+            return self._do_download(0, 32768, 64)
+        except errors.RadioError:
+            raise
+        except Exception, e:
+            LOG.exception('Unknown error during download process')
+            raise errors.RadioError("Failed to communicate with radio: %s" % e)
+
+    def _do_download(self, start, end, blocksize):
+        # allocate & fill memory
+        image = ""
+        for i in range(start, end, blocksize):
+            req = chr(i / 256) + chr(i % 256) + chr(blocksize)
+            self._write_record(CMD_RD, req)
+            cs_error, resp = self._read_record()
+            if cs_error:
+                LOG.debug(util.hexprint(resp))
+                raise Exception("Checksum error on read")
+            # LOG.debug("Got:\n%s" % util.hexprint(resp))
+            image += resp[2:]
+            if self.status_fn:
+                status = chirp_common.Status()
+                status.cur = i
+                status.max = end
+                status.msg = "Cloning from radio"
+                self.status_fn(status)
+        self._finish()
+        return memmap.MemoryMap(''.join(image))
+
+    def _upload(self):
+        """Talk to a wouxun KG-935G and do a upload"""
+        try:
+            self._identify()
+            self._do_upload(0, 32768, 64)
+        except errors.RadioError:
+            raise
+        except Exception, e:
+            raise errors.RadioError("Failed to communicate with radio: %s" % e)
+        return
+
+    def _do_upload(self, start, end, blocksize):
+        ptr = start
+        for i in range(start, end, blocksize):
+            req = chr(i / 256) + chr(i % 256)
+            chunk = self.get_mmap()[ptr:ptr + blocksize]
+            self._write_record(CMD_WR, req + chunk)
+            LOG.debug(util.hexprint(req + chunk))
+            cserr, ack = self._read_record()
+            LOG.debug(util.hexprint(ack))
+            j = ord(ack[0]) * 256 + ord(ack[1])
+            if cserr or j != ptr:
+                raise Exception("Radio did not ack block %i" % ptr)
+            ptr += blocksize
+            if self.status_fn:
+                status = chirp_common.Status()
+                status.cur = i
+                status.max = end
+                status.msg = "Cloning to radio"
+                self.status_fn(status)
+        self._finish()
+
+    def get_features(self):
+        rf = chirp_common.RadioFeatures()
+        rf.has_settings = True
+        rf.has_ctone = True
+        rf.has_rx_dtcs = True
+        rf.has_cross = True
+        rf.has_tuning_step = False
+        rf.has_bank = False
+        rf.can_odd_split = True
+        rf.valid_skips = ["", "S"]
+        rf.valid_tmodes = ["", "Tone", "TSQL", "DTCS", "Cross"]
+        rf.valid_cross_modes = [
+            "Tone->Tone",
+            "Tone->DTCS",
+            "DTCS->Tone",
+            "DTCS->",
+            "->Tone",
+            "->DTCS",
+            "DTCS->DTCS",
+        ]
+        rf.valid_modes = ["FM", "NFM"]
+        rf.valid_power_levels = self.POWER_LEVELS
+        rf.valid_name_length = 8
+        rf.valid_duplexes = ["", "-", "+", "split", "off"]
+#   MRT - Open up channel memory freq range to support RxFreq limit expansion
+        rf.valid_bands = [(30000000, 299999990),  # supports 2m
+                          (300000000, 999999990)]  # supports 70cm
+        # rf.valid_bands = [(self._memobj.vhf_limits.rx_start
+        #                 , self._memobj.vhf_limits.rx_stop),  # supports 2m
+        #                   (self._memobj.uhf_limits.rx_start
+        #                 , self._memobj.uhf_limits.rx_stop)]  # supports 70cm
+
+        rf.valid_characters = chirp_common.CHARSET_ASCII
+        rf.memory_bounds = (1, 999)  # 999 memories
+        rf.valid_tuning_steps = STEPS
+        return rf
+
+    @classmethod
+    def get_prompts(cls):
+        rp = chirp_common.RadioPrompts()
+        rp.experimental = \
+            ('This driver is experimental.  USE AT YOUR OWN RISK\n'
+             '\n'
+             'Please save a copy of the image from your radio with Chirp '
+             'before modifying any values.\n'
+             '\n'
+             'Please keep a copy of your memories with the original Wouxon'
+             'CPS software if you treasure them, this driver is new and'
+             'may contain bugs.\n'
+             '\n'
+             ' All of the settings from the Wouxon Custom Programming'
+             ' Software (CSP) have been mapped\n in addition to some bonus'
+             ' settings that were found.\n'
+             ' Changing the VHF/UHF Rx limits does expand receive range -'
+             ' but radio performance\n'
+             ' is not guaranteed-  and may void warranty or cause radio'
+             ' to malfunction.\n'
+             ' You can also customize the bottom banner from the OEMINFO '
+             ' Model setting\n'
+             )
+        return rp
+
+    def get_raw_memory(self, number):
+        return repr(self._memobj.memory[number])
+# MRT - corrected the Polarity decoding to match 935G implementation
+# use 0x2000 bit mask for R
+# MRT - 0x2000 appears to be the bit mask for Inverted DCS tones
+# MRT - n DCS Tone will be 0x4xxx values - i DCS Tones will
+# be 0x6xxx values.
+# MRT - Chirp Uses N for n DCS Tones and R for i DCS Tones
+
+    def _get_tone(self, _mem, mem):
+        def _get_dcs(val):
+            code = int("%03o" % (val & 0x07FF))
+            pol = (val & 0x2000) and "R" or "N"
+            return code, pol
+# MRT - Modified the function below to bitwise AND with 0x4000
+# to check for 935G DCS Tone decoding
+# MRT 0x4000 appears to be the bit mask for DCS tones
+        tpol = False
+# MRT Beta 1.1 - Fix the txtone compare to 0x4000 - was rxtone.
+        if _mem.txtone != 0xFFFF and (_mem.txtone & 0x4000) == 0x4000:
+            tcode, tpol = _get_dcs(_mem.txtone)
+            mem.dtcs = tcode
+            txmode = "DTCS"
+        elif _mem.txtone != 0xFFFF and _mem.txtone != 0x0:
+            mem.rtone = (_mem.txtone & 0x7fff) / 10.0
+            txmode = "Tone"
+        else:
+            txmode = ""
+# MRT - Modified the function below to bitwise AND with 0x4000
+# to check for 935G DCS Tone decoding
+        rpol = False
+        if _mem.rxtone != 0xFFFF and (_mem.rxtone & 0x4000) == 0x4000:
+            rcode, rpol = _get_dcs(_mem.rxtone)
+            mem.rx_dtcs = rcode
+            rxmode = "DTCS"
+        elif _mem.rxtone != 0xFFFF and _mem.rxtone != 0x0:
+            mem.ctone = (_mem.rxtone & 0x7fff) / 10.0
+            rxmode = "Tone"
+        else:
+            rxmode = ""
+
+        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)
+
+        # always set it even if no dtcs is used
+        mem.dtcs_polarity = "%s%s" % (tpol or "N", rpol or "N")
+
+        LOG.debug("Got TX %s (%i) RX %s (%i)" %
+                  (txmode, _mem.txtone, rxmode, _mem.rxtone))
+
+    def get_memory(self, number):
+        _mem = self._memobj.memory[number]
+        _nam = self._memobj.names[number]
+
+        mem = chirp_common.Memory()
+        mem.number = number
+        _valid = self._memobj.valid[mem.number]
+        LOG.debug("%d %s", number, _valid == MEM_VALID)
+        if _valid != MEM_VALID:
+            mem.empty = True
+            return mem
+        else:
+            mem.empty = False
+
+        mem.freq = int(_mem.rxfreq) * 10
+
+        if _mem.txfreq == 0xFFFFFFFF:
+            # TX freq not set
+            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 char != 0:
+                mem.name += chr(char)
+        mem.name = mem.name.rstrip()
+
+        self._get_tone(_mem, mem)
+
+        mem.skip = "" if bool(_mem.scan_add) else "S"
+        _mem.power = _mem.power & 0x3
+        if _mem.power > 2:
+            _mem.power = 2
+        mem.power = self.POWER_LEVELS[_mem.power]
+        mem.mode = _mem.iswide and "FM" or "NFM"
+        return mem
+
+    def _set_tone(self, mem, _mem):
+        def _set_dcs(code, pol):
+            # MRT Change from + 0x2800 to bitwise OR with 0x4000 to
+            # set the bit for DCS
+            val = int("%i" % code, 8) | 0x4000
+            if pol == "R":
+                # MRT Change to 0x2000 from 0x8000 to set the bit for
+                # i/R polarity
+                val += 0x2000
+            return val
+
+        rx_mode = tx_mode = None
+        rxtone = txtone = 0x0000
+
+        if mem.tmode == "Tone":
+            tx_mode = "Tone"
+            rx_mode = None
+            txtone = int(mem.rtone * 10) + 0x8000
+        elif mem.tmode == "TSQL":
+            rx_mode = tx_mode = "Tone"
+            rxtone = txtone = int(mem.ctone * 10) + 0x8000
+        elif mem.tmode == "DTCS":
+            tx_mode = rx_mode = "DTCS"
+            txtone = _set_dcs(mem.dtcs, mem.dtcs_polarity[0])
+            rxtone = _set_dcs(mem.dtcs, mem.dtcs_polarity[1])
+        elif mem.tmode == "Cross":
+            tx_mode, rx_mode = mem.cross_mode.split("->")
+            if tx_mode == "DTCS":
+                txtone = _set_dcs(mem.dtcs, mem.dtcs_polarity[0])
+            elif tx_mode == "Tone":
+                txtone = int(mem.rtone * 10) + 0x8000
+            if rx_mode == "DTCS":
+                rxtone = _set_dcs(mem.rx_dtcs, mem.dtcs_polarity[1])
+            elif rx_mode == "Tone":
+                rxtone = int(mem.ctone * 10) + 0x8000
+
+        _mem.rxtone = rxtone
+        _mem.txtone = txtone
+
+        LOG.debug("Set TX %s (%i) RX %s (%i)" %
+                  (tx_mode, _mem.txtone, rx_mode, _mem.rxtone))
+
+    def set_memory(self, mem):
+        number = mem.number
+
+        _mem = self._memobj.memory[number]
+        _nam = self._memobj.names[number]
+
+        if mem.empty:
+            _mem.set_raw("\x00" * (_mem.size() / 8))
+            self._memobj.valid[number] = 0
+            self._memobj.names[number].set_raw("\x00" * (_nam.size() / 8))
+            return
+
+        _mem.rxfreq = int(mem.freq / 10)
+        if mem.duplex == "off":
+            _mem.txfreq = 0xFFFFFFFF
+        elif mem.duplex == "split":
+            _mem.txfreq = int(mem.offset / 10)
+        elif mem.duplex == "off":
+            for i in range(0, 4):
+                _mem.txfreq[i].set_raw("\xFF")
+        elif mem.duplex == "+":
+            _mem.txfreq = int(mem.freq / 10) + int(mem.offset / 10)
+        elif mem.duplex == "-":
+            _mem.txfreq = int(mem.freq / 10) - int(mem.offset / 10)
+        else:
+            _mem.txfreq = int(mem.freq / 10)
+        _mem.scan_add = int(mem.skip != "S")
+        _mem.iswide = int(mem.mode == "FM")
+        # set the tone
+        self._set_tone(mem, _mem)
+        # MRT set the scrambler and compander to off by default
+        # MRT This changes them in the channel memory
+        _mem.scrambler = 0
+        _mem.compander = 0
+        # set the power
+        _mem.power = _mem.power & 0x3
+        if mem.power:
+            if _mem.power > 2:
+                _mem.power = 2
+            _mem.power = self.POWER_LEVELS.index(mem.power)
+        else:
+            _mem.power = True
+        # MRT set to mute mode to QT (not QT+DTMF or QT*DTMF) by default
+        # MRT This changes them in the channel memory
+        _mem.mute_mode = 0
+
+        # MRT it is unknown what impact these values have
+        # MRT This changes them in the channel memory to match what
+        # Wouxun CPS shows when creating a channel
+        # MRT It is likely that these are just left as is and not
+        # written to by CPS - bit remnants of 0xFF in the unused memory
+        # _mem.unknown1 = 0
+        # MRT Set to 3 to TO MATCH CPS VALUES
+        _mem.unknown3 = 3
+        # MRT Set to 1 to TO MATCH CPS VALUES
+        _mem.unknown4 = 1
+        # MRT set unknown5 to 1 and unknown6 to 0
+        _mem.unknown5 = 1
+        _mem.unknown6 = 255
+
+        for i in range(0, len(_nam.name)):
+            if i < len(mem.name) and mem.name[i]:
+                _nam.name[i] = ord(mem.name[i])
+            else:
+                _nam.name[i] = 0x0
+        self._memobj.valid[mem.number] = MEM_VALID
+
+    def _get_settings(self):
+        _settings = self._memobj.settings
+        _vfoa = self._memobj.vfoa
+        _vfob = self._memobj.vfob
+        _scan = self._memobj.scan_groups
+        _call = self._memobj.call_groups
+        _callname = self._memobj.call_names
+
+        cfg_grp = RadioSettingGroup("cfg_grp", "Config Settings")
+        vfoa_grp = RadioSettingGroup("vfoa_grp", "VFO A Settings")
+        vfob_grp = RadioSettingGroup("vfob_grp", "VFO B Settings")
+        key_grp = RadioSettingGroup("key_grp", "Key Settings")
+        fmradio_grp = RadioSettingGroup("fmradio_grp", "FM Broadcast Memory")
+        lmt_grp = RadioSettingGroup("lmt_grp", "Rx/Tx Frequency Limits")
+        uhf_lmt_grp = RadioSettingGroup("uhf_lmt_grp", "UHF")
+        vhf_lmt_grp = RadioSettingGroup("vhf_lmt_grp", "VHF")
+        oem_grp = RadioSettingGroup("oem_grp", "OEM Info")
+        scan_grp = RadioSettingGroup("scan_grp", "Scan Group")
+        call_grp = RadioSettingGroup("call_grp", "Call Settings")
+        extra_grp = RadioSettingGroup("extra_grp",
+                                      "Extra Settings"
+                                      "\nNOT Changed by RESET or CPS")
+        extra_grp.append(lmt_grp)
+        extra_grp.append(oem_grp)
+        group = RadioSettings(cfg_grp, vfoa_grp, vfob_grp,
+                              fmradio_grp, key_grp, scan_grp,
+                              call_grp, extra_grp)
+
+    # Call Settings
+        rs = RadioSetting("cur_call_grp", "Current Call Group",
+                          RadioSettingValueList(CALLGROUP_LIST,
+                                                CALLGROUP_LIST[_settings.
+                                                               cur_call_grp]))
+        call_grp.append(rs)
+
+        callchars = "0123456789"
+        for i in range(1, 21):
+            callnum = str(i)
+            _msg = ""
+            _msg1 = str(eval("_callname.call_name"+callnum)).split("\0")[0]
+# MRT - Handle default factory values of 0xFF or
+# non-ascii values in Call Name memory
+            for char in _msg1:
+                if char < chr(0x20) or char > chr(0x7E):
+                    # _msg += chr(0x20)
+                    _msg += ""
+                else:
+                    _msg += str(char)
+            val = RadioSettingValueString(0, 6, _msg)
+            val.set_mutable(True)
+            rs = RadioSetting("call_names.call_name"+callnum,
+                              "Call Name "+callnum, val)
+            call_grp.append(rs)
+
+            _codeobj = eval("_call.call_code_"+callnum)
+            _code = "".join([callchars[x] for x in _codeobj if int(x) < 0x0A])
+            val = RadioSettingValueString(3, 6, _code, False)
+            val.set_charset(callchars)
+            rs = RadioSetting("call_code_"+callnum,
+                              "Call Code " + callnum, val)
+
+            def apply_call_code(setting, obj):
+                value = []
+                for j in range(0, 6):
+                    try:
+                        value.append(callchars.index(str(setting.value)[j]))
+                    except IndexError:
+                        value.append(0xFF)
+                obj.call_code = value
+            rs.set_apply_callback(apply_call_code,
+                                  eval("_call.call_code_"+callnum))
+            call_grp.append(rs)
+
+        # Configuration Settings
+        #
+        rs = RadioSetting("DspBrtAct", "Display Brightness ACTIVE",
+                          RadioSettingValueMap(DSPBRTACT_MAP,
+                                               _settings.DspBrtAct))
+        cfg_grp.append(rs)
+        rs = RadioSetting("DspBrtSby", "Display Brightness STANDBY",
+                          RadioSettingValueList(DSPBRTSBY_LIST,
+                                                DSPBRTSBY_LIST[_settings.
+                                                               DspBrtSby]))
+        cfg_grp.append(rs)
+        rs = RadioSetting("wxalert", "Weather Alert",
+                          RadioSettingValueBoolean(_settings.wxalert))
+        cfg_grp.append(rs)
+        rs = RadioSetting("power_save", "Battery Saver",
+                          RadioSettingValueBoolean(_settings.power_save))
+        cfg_grp.append(rs)
+        rs = RadioSetting("theme", "Theme",
+                          RadioSettingValueList(
+                              THEME_LIST, THEME_LIST[_settings.theme]))
+        cfg_grp.append(rs)
+        rs = RadioSetting("backlight", "Backlight Active Time",
+                          RadioSettingValueList(BACKLIGHT_LIST,
+                                                BACKLIGHT_LIST[_settings.
+                                                               backlight]))
+        cfg_grp.append(rs)
+        rs = RadioSetting("scan_rev", "Scan Mode",
+                          RadioSettingValueList(SCANMODE_LIST,
+                                                SCANMODE_LIST[_settings.
+                                                              scan_rev]))
+        cfg_grp.append(rs)
+        rs = RadioSetting("prich_sw", "Priority Channel Scan",
+                          RadioSettingValueBoolean(_settings.prich_sw))
+        cfg_grp.append(rs)
+        rs = RadioSetting("pri_ch",
+                          "Priority Channel - Can not be empty Channel",
+                          RadioSettingValueInteger(1, 999, _settings.pri_ch))
+        cfg_grp.append(rs)
+        rs = RadioSetting("scan_det", "Scan Mode Tone Detect",
+                          RadioSettingValueBoolean(_settings.scan_det))
+        cfg_grp.append(rs)
+        rs = RadioSetting("ToneScnSave", "Tone Scan Save",
+                          RadioSettingValueList(TONESCANSAVELIST,
+                                                TONESCANSAVELIST[_settings.
+                                                                 ToneScnSave]))
+        cfg_grp.append(rs)
+        rs = RadioSetting("roger_beep", "Roger Beep",
+                          RadioSettingValueList(ROGER_LIST,
+                                                ROGER_LIST[_settings.
+                                                           roger_beep]))
+        cfg_grp.append(rs)
+        rs = RadioSetting("timeout", "Timeout Timer (TOT)",
+                          RadioSettingValueList(
+                              TIMEOUT_LIST, TIMEOUT_LIST[_settings.timeout]))
+        cfg_grp.append(rs)
+        rs = RadioSetting("toalarm", "Timeout Alarm (TOA)",
+                          RadioSettingValueInteger(0, 10, _settings.toalarm))
+        cfg_grp.append(rs)
+        rs = RadioSetting("vox", "VOX",
+                          RadioSettingValueList(LIST_10,
+                                                LIST_10[_settings.vox]))
+        cfg_grp.append(rs)
+        rs = RadioSetting("voice", "Voice Guide",
+                          RadioSettingValueBoolean(_settings.voice))
+        cfg_grp.append(rs)
+        rs = RadioSetting("beep", "Keypad Beep",
+                          RadioSettingValueBoolean(_settings.beep))
+        cfg_grp.append(rs)
+        rs = RadioSetting("BCL_B", "Busy Channel Lock-out A",
+                          RadioSettingValueBoolean(_settings.BCL_A))
+        cfg_grp.append(rs)
+        rs = RadioSetting("BCL_A", "Busy Channel Lock-out B",
+                          RadioSettingValueBoolean(_settings.BCL_B))
+        cfg_grp.append(rs)
+        rs = RadioSetting("smuteset", "Secondary Area Mute (SMUTESET)",
+                          RadioSettingValueList(SMUTESET_LIST,
+                                                SMUTESET_LIST[_settings.
+                                                              smuteset]))
+        cfg_grp.append(rs)
+        rs = RadioSetting("ani_sw", "ANI-ID Switch (ANI-SW)",
+                          RadioSettingValueBoolean(_settings.ani_sw))
+        cfg_grp.append(rs)
+        rs = RadioSetting("dtmf_st", "DTMF Sidetone (SIDETONE)",
+                          RadioSettingValueList(DTMFST_LIST,
+                                                DTMFST_LIST[_settings.
+                                                            dtmf_st]))
+        cfg_grp.append(rs)
+        rs = RadioSetting("alert", "Alert Tone",
+                          RadioSettingValueList(ALERTS_LIST,
+                                                ALERTS_LIST[_settings.alert]))
+        cfg_grp.append(rs)
+        rs = RadioSetting("ptt_delay", "PTT-DLY",
+                          RadioSettingValueMap(PTTDELAY_TIMES,
+                                               _settings.ptt_delay))
+        cfg_grp.append(rs)
+        rs = RadioSetting("ptt_id", "PTT-ID",
+                          RadioSettingValueList(PTTID_LIST,
+                                                PTTID_LIST[_settings.ptt_id]))
+        cfg_grp.append(rs)
+        rs = RadioSetting("ring_time", "Ring Time",
+                          RadioSettingValueList(LIST_10,
+                                                LIST_10[_settings.ring_time]))
+        cfg_grp.append(rs)
+        rs = RadioSetting("rpt_tone", "Repeater Tone",
+                          RadioSettingValueBoolean(_settings.rpt_tone))
+        cfg_grp.append(rs)
+        rs = RadioSetting("stopwatch", "Timer / Stopwatch",
+                          RadioSettingValueBoolean(_settings.stopwatch))
+        cfg_grp.append(rs)
+        rs = RadioSetting("autolock", "Autolock",
+                          RadioSettingValueBoolean(_settings.autolock))
+        cfg_grp.append(rs)
+        rs = RadioSetting("keylock", "Keypad Lock",
+                          RadioSettingValueBoolean(_settings.keylock))
+        cfg_grp.append(rs)
+        rs = RadioSetting("ponmsg", "Poweron message",
+                          RadioSettingValueList(
+                               PONMSG_LIST, PONMSG_LIST[_settings.ponmsg]))
+        cfg_grp.append(rs)
+        rs = RadioSetting("dtmf_tx_time", "DTMF Transmit Time",
+                          RadioSettingValueMap(DTMF_TIMES,
+                                               _settings.dtmf_tx_time))
+        cfg_grp.append(rs)
+        rs = RadioSetting("dtmf_interval", "DTMF Interval Time",
+                          RadioSettingValueMap(DTMF_TIMES,
+                                               _settings.dtmf_interval))
+        cfg_grp.append(rs)
+        rs = RadioSetting("channel_menu", "Menu available in channel mode",
+                          RadioSettingValueBoolean(_settings.channel_menu))
+        cfg_grp.append(rs)
+
+        pswdchars = "0123456789"
+        _msg = str(_settings.mode_sw_pwd).split("\0")[0]
+        val = RadioSettingValueString(0, 6, _msg, False)
+        val.set_mutable(True)
+        val.set_charset(pswdchars)
+        rs = RadioSetting("mode_sw_pwd", "Mode SW Pwd", val)
+        cfg_grp.append(rs)
+
+        _msg = str(_settings.reset_pwd).split("\0")[0]
+        val = RadioSettingValueString(0, 6, _msg, False)
+        val.set_charset(pswdchars)
+        val.set_mutable(True)
+        rs = RadioSetting("reset_pwd", "Reset Pwd", val)
+        cfg_grp.append(rs)
+
+        # Key Settings
+        #
+        _msg = str(_settings.dispstr).split("\0")[0]
+        val = RadioSettingValueString(0, 15, _msg)
+        val.set_mutable(True)
+        rs = RadioSetting("dispstr",
+                          "Display Message - Interface Display Edit", val)
+        key_grp.append(rs)
+
+        dtmfchars = "0123456789"
+        _codeobj = _settings.ani_code
+        _code = "".join([dtmfchars[x] for x in _codeobj if int(x) < 0x0A])
+        val = RadioSettingValueString(3, 6, _code, False)
+        val.set_charset(dtmfchars)
+        rs = RadioSetting("ani_code", "ANI Code", val)
+
+        def apply_ani_id(setting, obj):
+            value = []
+            for j in range(0, 6):
+                try:
+                    value.append(dtmfchars.index(str(setting.value)[j]))
+                except IndexError:
+                    value.append(0xFF)
+            obj.ani_code = value
+        rs.set_apply_callback(apply_ani_id, _settings)
+        key_grp.append(rs)
+
+        rs = RadioSetting("pf1_shrt", "PF1 SHORT Key function",
+                          RadioSettingValueList(
+                              PFKEYSHORT_LIST,
+                              PFKEYSHORT_LIST[_settings.pf1_shrt]))
+        key_grp.append(rs)
+        rs = RadioSetting("pf1_long", "PF1 LONG Key function",
+                          RadioSettingValueList(
+                              PFKEYLONG_LIST,
+                              PFKEYLONG_LIST[_settings.pf1_long]))
+        key_grp.append(rs)
+        rs = RadioSetting("pf2_shrt", "PF2 SHORT Key function",
+                          RadioSettingValueList(
+                              PFKEYSHORT_LIST,
+                              PFKEYSHORT_LIST[_settings.pf2_shrt]))
+        key_grp.append(rs)
+        rs = RadioSetting("pf2_long", "PF2 LONG Key function",
+                          RadioSettingValueList(
+                              PFKEYLONG_LIST,
+                              PFKEYLONG_LIST[_settings.pf2_long]))
+        key_grp.append(rs)
+
+#       SCAN GROUP settings
+        rs = RadioSetting("ScnGrpA_Act", "Scan Group A Active",
+                          RadioSettingValueList(SCANGRP_LIST,
+                                                SCANGRP_LIST[_settings.
+                                                             ScnGrpA_Act]))
+        scan_grp.append(rs)
+        rs = RadioSetting("ScnGrpB_Act", "Scan Group B Active",
+                          RadioSettingValueList(SCANGRP_LIST,
+                                                SCANGRP_LIST[_settings.
+                                                             ScnGrpB_Act]))
+        scan_grp.append(rs)
+
+        for i in range(1, 11):
+            scgroup = str(i)
+
+            rs = RadioSetting("scan_groups.Group_lower"+scgroup,
+                              "Scan Group "+scgroup+" Lower",
+                              RadioSettingValueInteger(1, 999,
+                                                       eval("self._memobj. \
+                                                            scan_groups. \
+                                                            Group_lower" +
+                                                            scgroup)))
+            scan_grp.append(rs)
+
+            rs = RadioSetting("scan_groups.Group_upper"+scgroup,
+                              "Scan Group "+scgroup+" Upper",
+                              RadioSettingValueInteger(1, 999,
+                                                       eval("self._memobj. \
+                                                            scan_groups. \
+                                                            Group_upper" +
+                                                            scgroup)))
+            scan_grp.append(rs)
+
+        # VFO A Settings
+        #
+        rs = RadioSetting("work_mode_a", "VFO A Workmode",
+                          RadioSettingValueList(WORKMODE_LIST,
+                                                WORKMODE_LIST[_settings.
+                                                              work_mode_a]))
+        vfoa_grp.append(rs)
+        rs = RadioSetting("work_ch_a", "VFO A Work Channel",
+                          RadioSettingValueInteger(1, 999,
+                                                   _settings.work_ch_a))
+        vfoa_grp.append(rs)
+        rs = RadioSetting("vfoa.rxfreq", "VFO A Rx Frequency (MHz)",
+                          RadioSettingValueFloat(
+                              30.00000, 999.999999,
+                              (_vfoa.rxfreq / 100000.0), 0.000001, 6))
+        vfoa_grp.append(rs)
+
+        rs = RadioSetting("vfoa.rxtone", "VFOA Rx tone",
+                          RadioSettingValueMap(
+                            TONE_MAP, _vfoa.rxtone))
+        vfoa_grp.append(rs)
+        rs = RadioSetting("vfoa.txtone", "VFOA Tx tone",
+                          RadioSettingValueMap(
+                            TONE_MAP, _vfoa.txtone))
+        vfoa_grp.append(rs)
+
+
+# MRT - AND power with 0x03 to display only the lower 2 bits for
+# power level and to clear the upper bits
+# MRT - any bits set in the upper 2 bits will cause radio to show
+# invalid values for power level and a display glitch
+# MRT - when PTT is pushed
+        _vfoa.power = _vfoa.power & 0x3
+        if _vfoa.power > 2:
+            _vfoa.power = 2
+        rs = RadioSetting("vfoa.power", "VFO A Power",
+                          RadioSettingValueList(
+                              POWER_LIST, POWER_LIST[_vfoa.power]))
+        vfoa_grp.append(rs)
+        rs = RadioSetting("vfoa.iswide", "VFO A Wide/Narrow",
+                          RadioSettingValueList(
+                              BANDWIDTH_LIST, BANDWIDTH_LIST[_vfoa.iswide]))
+        vfoa_grp.append(rs)
+        rs = RadioSetting("vfoa.mute_mode", "VFO A Mute (SP Mute)",
+                          RadioSettingValueList(
+                              SPMUTE_LIST, SPMUTE_LIST[_vfoa.mute_mode]))
+        vfoa_grp.append(rs)
+        rs = RadioSetting("VFO_repeater_a", "VFO A Repeater",
+                          RadioSettingValueBoolean(_settings.VFO_repeater_a))
+        vfoa_grp.append(rs)
+
+        rs = RadioSetting("vfoa.scrambler", "VFO A Descramble",
+                          RadioSettingValueList(
+                              SCRAMBLE_LIST, SCRAMBLE_LIST[_vfoa.scrambler]))
+        vfoa_grp.append(rs)
+
+        rs = RadioSetting("vfoa.cmpndr", "VFO A Compander",
+                          RadioSettingValueList(
+                             ONOFF_LIST, ONOFF_LIST[_vfoa.cmpndr]))
+        vfoa_grp.append(rs)
+
+        rs = RadioSetting("vfoa.step", "VFO A Step (kHz)",
+                          RadioSettingValueList(
+                              STEP_LIST, STEP_LIST[_vfoa.step]))
+        vfoa_grp.append(rs)
+        rs = RadioSetting("vfoa.squelch", "VFO A Squelch",
+                          RadioSettingValueList(
+                              LIST_10, LIST_10[_vfoa.squelch]))
+        vfoa_grp.append(rs)
+
+        # VFO B Settings
+        rs = RadioSetting("work_mode_b", "VFO B Workmode",
+                          RadioSettingValueList(WORKMODE_LIST,
+                                                WORKMODE_LIST[_settings.
+                                                              work_mode_b]))
+        vfob_grp.append(rs)
+        rs = RadioSetting("work_ch_b", "VFO B Work Channel",
+                          RadioSettingValueInteger(1, 999,
+                                                   _settings.work_ch_b))
+        vfob_grp.append(rs)
+        rs = RadioSetting("vfob.rxfreq", "VFO B Rx Frequency (MHz)",
+                          RadioSettingValueFloat(
+                              30.000000, 999.999999,
+                              (_vfob.rxfreq / 100000.0), 0.000001, 6))
+        vfob_grp.append(rs)
+        rs = RadioSetting("vfob.rxtone", "VFOB Rx tone",
+                          RadioSettingValueMap(
+                            TONE_MAP, _vfob.rxtone))
+        vfob_grp.append(rs)
+        rs = RadioSetting("vfob.txtone", "VFOB Tx tone",
+                          RadioSettingValueMap(
+                            TONE_MAP, _vfob.txtone))
+        vfob_grp.append(rs)
+
+# MRT - AND power with 0x03 to display only the lower 2 bits for
+# power level and to clear the upper bits
+# MRT - any bits set in the upper 2 bits will cause radio to show
+# invalid values for power level and a display glitch
+# MRT - when PTT is pushed
+        _vfob.power = _vfob.power & 0x3
+        if _vfob.power > 2:
+            _vfob.power = 2
+        rs = RadioSetting("vfob.power", "VFO B Power",
+                          RadioSettingValueList(
+                              POWER_LIST, POWER_LIST[_vfob.power]))
+        vfob_grp.append(rs)
+        rs = RadioSetting("vfob.iswide", "VFO B Wide/Narrow",
+                          RadioSettingValueList(
+                              BANDWIDTH_LIST, BANDWIDTH_LIST[_vfob.iswide]))
+        vfob_grp.append(rs)
+        rs = RadioSetting("vfob.mute_mode", "VFO B Mute (SP Mute)",
+                          RadioSettingValueList(
+                              SPMUTE_LIST, SPMUTE_LIST[_vfob.mute_mode]))
+        vfob_grp.append(rs)
+        rs = RadioSetting("VFO_repeater_b", "VFO B Repeater",
+                          RadioSettingValueBoolean(_settings.VFO_repeater_b))
+        vfob_grp.append(rs)
+
+        rs = RadioSetting("vfob.scrambler", "VFO B Descramble",
+                          RadioSettingValueList(
+                              SCRAMBLE_LIST, SCRAMBLE_LIST[_vfob.scrambler]))
+        vfob_grp.append(rs)
+
+        rs = RadioSetting("vfob.cmpndr", "VFO B Compander",
+                          RadioSettingValueList(
+                              ONOFF_LIST, ONOFF_LIST[_vfob.cmpndr]))
+        vfob_grp.append(rs)
+
+        rs = RadioSetting("vfob.step", "VFO B Step (kHz)",
+                          RadioSettingValueList(
+                              STEP_LIST, STEP_LIST[_vfob.step]))
+        vfob_grp.append(rs)
+        rs = RadioSetting("vfob.squelch", "VFO B Squelch",
+                          RadioSettingValueList(
+                              LIST_10, LIST_10[_vfob.squelch]))
+        vfob_grp.append(rs)
+
+# FM RADIO PRESETS
+
+# memory stores raw integer value like 760
+# radio will divide 760 by 10 and interpret correctly at 76.0Mhz
+        for i in range(1, 21):
+            chan = str(i)
+            rs = RadioSetting("FM_radio" + chan, "FM Preset" + chan,
+                              RadioSettingValueFloat(76.0, 108.0,
+                                                     eval("_settings. \
+                                                          FM_radio" +
+                                                          chan)/10.0,
+                                                     0.1, 1))
+            fmradio_grp.append(rs)
+
+# Freq Limits settings
+        #
+        rs = RadioSetting("vhf_limits.rx_start", "VHF RX Lower Limit (MHz)",
+                          RadioSettingValueFloat(
+                              30.000000, 299.999999,
+                              (self._memobj.vhf_limits.rx_start / 100000.0),
+                              0.000001, 6))
+
+        lmt_grp.append(rs)
+        rs = RadioSetting("vhf_limits.rx_stop", "VHF RX Upper Limit (MHz)",
+                          RadioSettingValueFloat(
+                              30.000000, 299.999999,
+                              (self._memobj.vhf_limits.rx_stop / 100000.0),
+                              0.000001, 6))
+        lmt_grp.append(rs)
+
+        rs = RadioSetting("vhf_limits.tx_start", "VHF TX Lower Limit (MHz)",
+                          RadioSettingValueFloat(
+                              30.000000, 299.999999,
+                              (self._memobj.vhf_limits.tx_start / 100000.0),
+                              0.000001, 6))
+
+        lmt_grp.append(rs)
+        rs = RadioSetting("vhf_limits.tx_stop", "VHF TX Upper Limit (MHz)",
+                          RadioSettingValueFloat(
+                              30.000000, 299.999999,
+                              (self._memobj.vhf_limits.tx_stop / 100000.0),
+                              0.000001, 6))
+        lmt_grp.append(rs)
+
+# MRT - TX Limits do not appear to change radio's ability
+#  to transmit on other freqs.
+# MRT - Appears that the radio firmware prevent Tx
+# on anything other than a valid GMRS Freq
+
+        # rs = RadioSetting("vhf_limits.tx_start", "VHF TX Lower Limit",
+        #                   RadioSettingValueInteger(
+        #                       10000000, 299999999,
+        #                       self._memobj.vhf_limits.tx_start * 10, 5000))
+        # val.set_mutable(False)
+        # vhf_lmt_grp.append(rs)
+        # rs = RadioSetting("vhf_limits.tx_stop", "VHF TX Upper Limit",
+        #                   RadioSettingValueInteger(
+        #                       10000000, 299999999,
+        #                       self._memobj.vhf_limits.tx_stop * 10, 5000))
+        # val.set_mutable(False)
+        # vhf_lmt_grp.append(rs)
+
+        rs = RadioSetting("uhf_limits.rx_start", "UHF RX Lower Limit (MHz)",
+                          RadioSettingValueFloat(
+                              300.000000, 999.999999,
+                              (self._memobj.uhf_limits.rx_start / 100000.0),
+                              0.000001, 6))
+        lmt_grp.append(rs)
+        rs = RadioSetting("uhf_limits.rx_stop", "UHF RX Upper Limit (MHz)",
+                          RadioSettingValueFloat(
+                              300.000000, 999.999999,
+                              (self._memobj.uhf_limits.rx_stop / 100000.0),
+                              0.000001, 6))
+        lmt_grp.append(rs)
+
+        rs = RadioSetting("uhf_limits.tx_start", "UHF TX Lower Limit (MHz)",
+                          RadioSettingValueFloat(
+                              300.000000, 999.999999,
+                              (self._memobj.uhf_limits.tx_start / 100000.0),
+                              0.000001, 6))
+        lmt_grp.append(rs)
+        rs = RadioSetting("uhf_limits.tx_stop", "UHF TX Upper Limit (MHz)",
+                          RadioSettingValueFloat(
+                              300.000000, 999.999999,
+                              (self._memobj.uhf_limits.tx_stop / 100000.0),
+                              0.000001, 6))
+        lmt_grp.append(rs)
+
+        # rs = RadioSetting("uhf_limits.tx_start", "UHF TX Lower Limit",
+        #                   RadioSettingValueInteger(
+        #                       300000000, 999999999,
+        #                       self._memobj.uhf_limits.tx_start * 10, 5000))
+        # uhf_lmt_grp.append(rs)
+        # rs = RadioSetting("uhf_limits.tx_stop", "UHF TX Upper Limit",
+        #                   RadioSettingValueInteger(
+        #                       300000000, 999999999,
+        #                       self._memobj.uhf_limits.tx_stop * 10, 5000))
+        # uhf_lmt_grp.append(rs)
+
+
+# OEM info
+        #
+        def _decode(lst):
+            _str = ''.join([chr(c) for c in lst
+                            if chr(c) in chirp_common.CHARSET_ASCII])
+            return _str
+
+        def do_nothing(setting, obj):
+            return
+
+        _str = _decode(self._memobj.oem_info.model)
+        val = RadioSettingValueString(0, 8, _str)
+        val.set_mutable(True)
+        rs = RadioSetting("oem_info.model", "Model / Bottom Banner", val)
+        oem_grp.append(rs)
+        _str = _decode(self._memobj.oem_info.oem1)
+        val = RadioSettingValueString(0, 15, _str)
+        val.set_mutable(False)
+        rs = RadioSetting("oem_info.oem1", "OEM String 1", val)
+        rs.set_apply_callback(do_nothing, _settings)
+        oem_grp.append(rs)
+        _str = _decode(self._memobj.oem_info.oem2)
+        val = RadioSettingValueString(0, 15, _str)
+        val.set_mutable(False)
+        rs = RadioSetting("oem_info.oem2", "Firmware Version ??", val)
+        rs.set_apply_callback(do_nothing, _settings)
+        oem_grp.append(rs)
+        # _str = _decode(self._memobj.oem_info.version)
+        # val = RadioSettingValueString(0, 15, _str)
+        # val.set_mutable(False)
+        # rs = RadioSetting("oem_info.version", "Software Version", val)
+        # rs.set_apply_callback(do_nothing, _settings)
+        # oem_grp.append(rs)
+        _str = _decode(self._memobj.oem_info.date)
+        val = RadioSettingValueString(0, 15, _str)
+        val.set_mutable(False)
+        rs = RadioSetting("oem_info.date", "OEM Date", val)
+        rs.set_apply_callback(do_nothing, _settings)
+        oem_grp.append(rs)
+
+        return group
+
+    def get_settings(self):
+        try:
+            return self._get_settings()
+        except:
+            import traceback
+            LOG.error("Failed to parse settings: %s", traceback.format_exc())
+            return None
+
+    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()
+                    else:
+                        LOG.debug("Setting %s = %s" % (setting, element.value))
+                        if self._is_freq(element):
+                            # setattr(obj, setting, int(element.value / 10))
+                            # MRT rescale freq values to match radio
+                            # expected values
+                            setattr(obj, setting,
+                                    int(element.values()[0]._current *
+                                        100000.0))
+                        elif self._is_fmradio(element):
+                            # MRT rescale FM Radio values to match radio
+                            # expected values
+                            setattr(obj, setting,
+                                    int(element.values()[0]._current * 10.0))
+                        else:
+                            setattr(obj, setting, element.value)
+                except Exception, e:
+                    LOG.debug(element.get_name())
+                    raise
+
+    def _is_freq(self, element):
+        return "rxfreq" in element.get_name() or \
+         "txoffset" in element.get_name() or \
+         "rx_start" in element.get_name() or \
+         "rx_stop" in element.get_name() or \
+         "tx_start" in element.get_name() or \
+         "tx_stop" in element.get_name()
+
+    def _is_fmradio(self, element):
+        return "FM_radio" in element.get_name()
diff --git a/tests/images/Wouxun_KG-935G.img b/tests/images/Wouxun_KG-935G.img
new file mode 100644
index 0000000000000000000000000000000000000000..033f0d72572691f3b3bdaf697527db07cff258cf
GIT binary patch
diff --git a/tools/cpep8.manifest b/tools/cpep8.manifest
--- a/tools/cpep8.manifest
+++ b/tools/cpep8.manifest
@@ -70,6 +70,7 @@
 ./chirp/drivers/kenwood_hmk.py
 ./chirp/drivers/kenwood_itm.py
 ./chirp/drivers/kenwood_live.py
+./chirp/drivers/kg935g.py
 ./chirp/drivers/kguv8d.py
 ./chirp/drivers/kguv920pa.py
 ./chirp/drivers/kguv9dplus.py
