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/****************************************************************************

 *   Copyright (C) 2009-2010 by Claas Anders "CaScAdE" Rathje               *

 *   admiralcascade@gmail.com                                               *

 *   Project-URL: http://www.mylifesucks.de/oss/c-osd/                      *

 *                                                                          *

 *   This program is free software; you can redistribute it and/or modify   *

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

 *   the Free Software Foundation; either version 2 of the License.         *

 *                                                                          *

 *   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, write to the                          *

 *   Free Software Foundation, Inc.,                                        *

 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.              *

 ****************************************************************************/

20100218-2330

  *hopefully fixed the laggy osd data problem

  -send_data_mk has been striked out to save space

  @nc-mode should be small enough for bootloader again ( Program:   14986 bytes (91.5% Full) )

20100216-1430

  *some menu stuff

  *stats in nc_default do not disturb the bigvario anymore

  *reduced code size from 16088 bytes (98.2% Full) 15436 bytes (94.2% Full)

20100214-1700

  +mah wasted per flight (still counts up after landing, but space gets tight)

  *init phase from 2000ms to 3000ms

  *init only takes place after first "valid" UBat is received (<4V should case the Mega to reset anyways)

20100212-2310

  *adapted MK-datastructs to NC 0.18c

  *added choice for current display measured by FC

20091109-1100

  +fc-only mode by Josef "jopl" Plasil (MK3Mag on FC and no NC)

  *usart1 routine to filter out unwanted datasets (also big thanks to jopl)

20091102-2205

  +nc/fc software version display in bootup

  *changed checkbytes because of previously removed EEPROM data

20091030-2222

	*synced NaviStruct to NC Code v0.17e

	(since nothing of the new stuff is used right now, older NC version will still work)

20090714-2100

	*fixed the flags (hopefully) for C-Strom and stuff

20090706-2000

    *hopefully fixed the new 10th number showing functions

    +support for GPS height instead of Baro

20090703-0005

    *write-number-functions changed, using itoa now, saves space, should be faster

    *inline added for basic max7456-spi_send because saves procedure call (^= time)

20090627-1415

	*ALL characters now in Progmem, from now on there will be only ONE char-file!

20090612-2100

    *spi transfer now struct driven (needs C-Strom 20090612-2100 now!!!)

    *lesser spi update rate (caused problems on some strom-slaves)

    *voltage gets transfered via spi as well

    *menu to switch display of 2nd voltage measured by C-Strom on and off

20090604-1350

	*bugfix for stats

20090604-1330

	*possible to choose between different osd-layouts (via menu)

20090604-0700

	+(shaddi)osd_ncmode_minimal for less symbols during FPV

20090601-2233

	*(woggle) changed timer init an interupt to be more precise

	*(woggle) remove all warning during compile

	*(woggle) simplify draw_big_variometer

	*(woggle) put compass rose to PROGMEM

	*(woggle) put directions array to PROGMEM

20090525-2305

	+HUD on/off via RC (connect to PPM, according to manual) testing stuff

20090523-1150

	+pal/ntsc changable in menu (applied immedeately!)

20090519-2245

    *mah corrected

    +config gets saved now (menu item!)

    *source moved a bit

20090519-0115

    +mah currently wasted

    *some small changes

20090517-2345

	*modded the real alpha stuff i have been talking about below

20090516-2345

	+some really testing stuff 'bout current measurement, more to come

20090513-2350

	*cellnumber autoconfig modified, offset set to 1,5V

	*copy paste nick/roll error fixed

	*clean after build in dist.sh

	+a little shellscript to auto-build the files (testing)

	*osd-layouts in seperate files so including own layouts should get easier

	+build date is displayed during init to know which version you are runing

20090513-1040

    *some code movement

    +artificial horizon for FC-ONLY mode

20090512-2100

    +some FCONLY basics (set FCONLY to 1 in main.h to use it)

20090511-2345

    *battery voltages now calculated according to CELL_VOLT_MIN CELL_VOLT_MAX and CELL_NUM

    *CELL_NUM -1 causes a rough auto detection of cell number

    -UBAT_WRN and UBAT_MAX are now deprecated

20090427-2315

    +write_gps_pos(...) (needs to be tested)

    +gps position is shown in stats screen for testing purpose

20090427-2131

    *stats are only collected while engines running (shaddi)

20090427-2102

    *fixed maximum distance in stats (shaddi)

20090427-2050

    *clear() now faster

    *fixed calculation of max speed in stats (shaddi)

    *littel typo in artificial horizon (thx joko)

    *stats are only shown AFTER flight (more specific, after motors had been on at least once)

    +indication icon for serial link (requires new character 198)

    +indication icon for manual controll (stick > stick threshold)

    (Character set 192 needs to be reflashed since new icon is in it)

20090420-0205

    *reset-bug fixed

    *moved code a bit

20090419-2145

	*reset-bug workaround in usart1.c: usart1_DisableTXD and usart1_EnableTXD

20090419-1900

	*fixed bug in heading-fine conv for bearing to home

20090419-1245

	*compass characters bigger

	*battery position

	+voltage-symbol to battery-voltage

	(Character Set 208 needs to be reflashed since compass chars are in it)

20090418-2015

	*fixed bug in Character Set 128 (reflash it if you already flashed it!)

	+another set of vario chars

	*changed vario to use new characters

	*moved vario/home-bearing positions

	*big vario now enabled via menu or BIGVARIO

	(Character Set 112 needs to be flashed)

20090418-1235

	+big vario for testing purpose

	(Character Set 192 needs to be flashed)

20090418-0100

	*variometer uses more steps (9 instead of 5)

	*home-arrow is now home-clock using more steps (22,5° resolution)

	+visual battery-gauge according to difference between UBAT_WRN and UBAT_MAX

20090417-1115

	*changed calculation of km/h (thx wowie)

	*added JochenK_(joko)'s characters

	(Character-Sets 128, 136, 144, 152, 160, 168, 176 and 184 need to be flashed!)

20090408-1245 (shaddi)

	*fixed distance towards home

20090408-0035

	*rewrote number->display functions

	*fixed height bug (uint vs int)

20090407-2100

    +added request of OSD data, disrequest of debug data and uptime reset to menu

    -removed the uptime-reset binding from S2

    +pgm space for some strings to save _normal_ data space

    *some code movement

20090406-0130

	*MK-Datastruct updated to work with NaviCtrl 0.15c firmware

	*changed flags from NO* to invers versions

	*enhanced the menu a bit

	-artificial horizon at bootup, the menu is cooler imho

20090405-0207

	+NOOSD as requested

	*height now corrected (thx lephisto) and displayed as .x up to 10m

20090402-0106

	+ disabling the txd pin while not using it so it won't interfere with KopterTool usage (thx joko)

	+ if no data has been received for over 2sec we re-request it

	* tried source organisation a bit

20090401-1741 (shaddi)

	+ More precise Veriometer. Uses more more characters to show the speed of the movement

	  (Character-Set 232 needs to be flashed!)

20090331-1549

	+ simple config menu during runtime, press S1 to jump in, S2 to cyle and S1 to accept choice

	- S1 no longer requests the NC data

20090331-1305

	+ added more statistics

	* corrected S1/S2 mapping (d'oh)

	+ started simple mode controll, press S2 during bootup toggles artificial horizon

20090329-1452

	* fixed bearing to home

	+ added flight stats (shown while engines off)

	+ sat icon should indicate PH/CH/Free now

	+ you need to flash characters 224-231 if you were using previous versions

20090327-2140

	* fixed km/h (was cm/s)

	* fixed height m (was dm)

	* modified incoming data speed to 100ms (was 200ms)

20090326-2031

	+ first binary release