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Current README file follows.

/* $Id$ */

1. About this program
2. Authors, webpage, credits, license
3. Interface
4. Compilation and installation
5. Usage
5.1. owx-check
5.2. owx-get
5.3. owx-put
5.4. owx-export
5.5. owx-import
6. Spreadsheet format
6.1. Channel table
6.1.1. CH
6.1.2. Name
6.1.3. RX & TX Frequency
6.1.4. RX & TX CTCSS
6.1.5. Deviation
6.1.6. TX Power
6.1.7. Scan
6.1.8. BCL
6.2. Frequency ranges
6.3. FM radio
6.4. UVD3 welcome message

1. About this program

OWX (Open Wouxun) is an open-source program designed to program Wouxun 
transceivers. It was developed on Wouxun KG-UV2D and tested on KG-UVD1P 
(both identify as KG669V). Support was added also for KG-UVA1 radio. 
Possibly other Wouxuns are supported too, but this is not guaranteed, 
so use at your own risk and ALWAYS make backups! This software is highly 
experimental. Using it can result in rendering your radio unusable and 
your dog killed. You have been warned.

Utility was developed on GNU/Linux with gcc 4.3.2, but ports to other 
systems can (and should!) be made. It was tested only on i386, but is 
written with endianness in mind and should run on BE machines as well 
(but it was never tested and some bugs are possible).

It communicates only in english, but is prepared to handle i18n if someone 
wants to. Please see intl.h file for details.

Utility has five functions. They are used to:

- check radio connection
- download binary data from radio
- upload binary data to radio
- export human-readable spreadsheet from binary data file
- import edited spreadsheet into existing binary data file

Binary data contains everything that can be changed in the radio - all 
settings, channels, current modes of operation etc.

Please also see the TODO file to see what this software can NOT do!

2. Authors, webpage, credits, license

Program was written by SP5GOF (Adam Wysocki, gof (at) chmurka.net). 
Newest version can be downloaded from http://owx.chmurka.net/

Reverse-engineering, protocol information and initial testing were done 
by SQ5LWN (Lukasz Mozer, baseciq (at) baseciq.org).

Program is licensed under beer-ware license. We're HAMs and not lawyers, 
so no law hell applies here (nobody really reads licenses anyways), just 
pure HAM spirit. You are free to do with this program whatever you like, 
just be nice and don't remove the original authorship - that would be a 
bit shitty. If you feel that this code is worth this, you can just shout 
us some beer or donate some doges to this DogeCoin address: 
D8bVcncife3w1LAvurTdYknnmNBzkWuQwk

If you don't like the beer-ware license, like, if you prefer fruity 
drinks or something, you can use the Apache 2.0 license instead.

http://www.apache.org/licenses/LICENSE-2.0

Regardless of this, one thing must be said: we cannot be made responsible 
for breaking your radio with this program. Everything you do, you do at 
your own risk and by using this program you agree not to fill any lawsuit 
against us if your rig explodes right in front of your face.

3. Interface

To connect your rig to the PC, you will need any standard RS232/TTL 
converter with MAX232 or similar. Schematics etc. can be found on 
Google. You can also adapt some old cellular phone cable or buy a 
dedicated cable on your favourite bidding service.

Connections:

2.5mm (speaker):

- shield: gnd
- ring: radio tx (out)
- tip: not connected

3.5mm (microphone):

- shield: radio rx (in)
- ring: not connected
- tip: not connected

4. Compilation and installation

Standard GNU make command will do the stuff. Program was written in C++ 
with heavy usage of STL, so you will need g++ with standard libraries, 
and of course GNU make. After compilation use "make install" to install 
the program in /usr/local/.

5. Usage

Before you begin, it may be convenient to set OWX_PORT environmental 
variable in ~/.bashrc or similar shell rc file. With this variable 
you can specify default port instead of using -p. You can also set 
OWX_TIMEOUT to use alternate default when -t is not specified.

After installation you will find five programs in /usr/local/bin:

owx-check
owx-get
owx-put
owx-export
owx-import

They are all symlinks to one executable - /usr/local/libexec/owx.

All programs return 0 when everything goes okay and 1 when error occurs.

Programs accept these common options:

-c <cmd>: override command (check, get, put, export, import)
-h: fast help
-v: version string

You will almost never use -c command - if it's used, you can use one 
command (owx-get) to perform another task. It is mandatory only when 
you run main binary and not the symlinks.

Programs that communicate with the radio (owx-check, owx-get and owx-put) 
accept these options:

-f: force even if radio is not recognized
-p <port>: specify port
-t <timeout>: receive timeout in seconds
-m <model>: model

-f can force the operation if your radio identifies different from KG669V. 
Use this option with extreme caution - it is very possible that your radio 
will be rendered unusable after you use this. It was NEVER tested with any 
radio different from mentoined above.

-p specifies path to the tty device, i.e. /dev/ttyS0 or /dev/ttyUSB0. Of 
course you must have appropriate read and write permissions for this device.

-t specifies receive timeout for communication with radio. If you disable 
it (by setting to 0) and the communication fails, the program will hang 
forever. You probably don't need to change the default value (5 seconds).

Model for -m can be:

- UVD1 (for UVD1 and UVD2 radios)
- UVD3 (as UVD1, but with UVD3 welcome message editing)
- UVA1 (16-channel radio with different location of frequency ranges)

5.1. owx-check

This program just checks for the connection and identification string. It 
can be used to check that your cable and port works.

5.2. owx-get

This program downloads memory map from radio to binary file.

Options:

-o <path>: binary file to write to

5.3. owx-put

This program uploads memory map from binary file to radio.

Options:

-i <path>: binary file to read from
-r <path>: reference file

Option -r is not mandatory, but recommended. You can specify original, 
unchanged file (exactly as downloaded using owx-get) and this will speed 
up memory uploading, as owx will compare input file to this reference 
file and upload only changed memory pages. When using this option, be 
sure that nothing has changed in the radio (even the currently selected 
memory channel) between downloading reference file and using it for 
upload. This is important as some variables that cross the page 
boundaries (if there are any in the memory map) could be corrupted 
by this.

Example:

owx-get -o file.bin
cp file.bin backup.bin
owx-export -i file.bin -o wouxun.csv
oocalc wouxun.csv
owx-import -i wouxun.csv -o file.bin
owx-put -i file.bin -r backup.bin

Please do yourself a favour and double-check that you upload the correct 
file. If you try to upload incorrect or corrupted file, your radio will 
power down and fail to power up. owx will refuse to upload any file with 
incorrect size, but this is the only safety check.

5.4. owx-export

This program exports channel data from binary file to CSV file. This file 
can be later edited using your favourite spreadsheet editor or even text 
editor.

Options:

-i <path>: binary file to read from
-o <path>: csv file to write to

5.5. owx-import

This program reads the specified, possibly edited by you CSV file, and 
patches existing binary file with this updated data. The file is now 
prepared to be uploaded with owx-put.

Options:

-i <path>: csv file to read from
-o <path>: binary file to write to (must already exist)

6. Spreadsheet format

When importing to a spreadsheet editor, import all fields as text (to 
make sure that your editor will not try to interpret anything). Then 
you will see the channel table and below it, frequency ranges.

6.1. Channel table

Channel table fields are as follows:

6.1.1. CH

This is the channel number. Do not change.

6.1.2. Name

Channel name. Max 6 characters, only letters and digits. Lowercase letters 
will be converted to uppercase.

6.1.3. RX & TX Frequency

Frequencies in format XXX.YYYYY (for example "145.52500"). They must strictly 
follow this format (another reason to import fields as text).

6.1.4. RX & TX CTCSS

PL subtone. Format is XX.Y or XXX.Y (for example: "127.3").

6.1.5. Deviation

Can be "narrow" or "wide", for narrow-band FM and wide-band FM.

6.1.6. TX Power

Can be "low" for 1W and "high" for 5W (on VHF) or 4W (on UHF).

6.1.7. Scan

Can be "yes" to include this channel in scanning and "no" to skip.

6.1.8. BCL

Can be "yes" to enable BCL (Busy Channel Lockout) on this channel and "no" 
otherwise. BCL prevents you from TX-ing when the channel is busy (squelch 
opened).

6.2. Frequency ranges

There are eight values below the channel table. They correspond to the RX 
and TX ranges on both bands. By editing them, you can unlock your radio 
(change it's transmit and receive range), but it's easy to kill your radio 
by setting invalid values. If the ranges are invalid, the rig will refuse 
to turn on, probably due to busy-waiting for the PLL loop to lock. YOU WILL 
NOT BE ABLE TO REPROGRAM MEMORY USING ORDINARY CABLE. We've killed one radio 
this way and in order to bring it back to life I had to open it, disable the 
MCU (I just disabled it's clock), connect to the memory I2C bus and manually 
reprogram it. If you lack appropriate equipment or skills you definitely 
don't want to do this.

OWX performs some basic checks on the ranges when importing and warns you 
if any value seems to be bogus, but it doesn't check the ranges (if you mess 
with their order). Also, bugs in the importing routine are possible. If you 
see any warning during importing, consider contacting me before putting the 
resulting file to the radio, as it is easy to brick the radio and not so 
easy to bring it back to life.

If instead of frequencies you see some hexadecimal values (0xABCD or so) 
then the decoder (used when exporting) found unexpected pattern and refused 
to decode the value. Please contact me and provide these raw values. It 
should be safe to program them back to the radio, but don't change them 
(they're encoded).

6.3. FM radio

Below frequency ranges there are nine FM broadcast radio channels. You can 
use syntax XX.Y or XXX.Y (example: "101.5") to program broadcast FM radio.

6.4. UVD3 welcome message

KG-UVD3 allows you to edit welcome message - max 6 ascii characters. In UVD1 
and UVD2 this memory area is ignored.