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/****************************************************************************
 *   Copyright (C) 2009 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.              *
 ****************************************************************************/

// write icons at init or after menu/mode-switch
if (!(COSD_FLAGS & COSD_ICONS_WRITTEN)) {
    write_char_xy(5, top_line, 0xCB); // km/h
    write_char_xy(10, top_line, 0xCA); // RC-transmitter
    write_char_xy(16, top_line, 0xD0); // degree symbol
    write_char_xy(27, top_line, 0xCC); // small meters m height
    write_char_xy(20, top_line + 1, 0xB0); // left circle
    write_char_xy(22, top_line + 1, 0xB2); // right circle
    write_char_xy(27, top_line + 1, 0xCC); // small meters m home
    write_char_xy(7, bottom_line, 0x9E); // small V
        if (COSD_FLAGS2 & COSD_FLAG_STROMREC) {
                write_char_xy(7, bottom_line - 1, 0x9F); // small A
                write_char_xy(14, bottom_line - 1, 0xB5); // mah
        }
    write_char_xy(14, bottom_line, 0xD1); // on clock
    write_char_xy(21, bottom_line, 0xD2); // fly clock
    write_char_xy(26, bottom_line, 0xC8); // sat1
    write_char_xy(27, bottom_line, 0xC9); // sat2
        COSD_FLAGS |= COSD_ICONS_WRITTEN;
}

// first line
write_ndigit_number_u(2, top_line, (uint16_t) (((uint32_t) naviData.GroundSpeed * (uint32_t) 9) / (uint32_t) 250), 100, 0);

write_ndigit_number_u(7, top_line, naviData.RC_Quality, 100, 0);
if (naviData.RC_Quality <= RCLVL_WRN && last_RC_Quality > RCLVL_WRN) {
    for (uint8_t x = 0; x < 4; x++)
        write_char_att_xy(7 + x, top_line, BLINK);
} else if (naviData.RC_Quality > RCLVL_WRN && last_RC_Quality <= RCLVL_WRN) {
    for (uint8_t x = 0; x < 4; x++)
        write_char_att_xy(7 + x, top_line, 0);
}
last_RC_Quality = naviData.RC_Quality;

if (naviData.NCFlags & NC_FLAG_NOSERIALLINK) {
    write_char_xy(11, top_line, 0); // clear
} else {
    write_char_xy(11, top_line, 0xC6); // PC icon
}

write_ndigit_number_u(13, top_line, naviData.CompassHeading, 100, 0);

write_ascii_string(17, top_line, directions[heading_conv(naviData.CompassHeading)]);

draw_variometer(21, top_line, naviData.Variometer);

//note:lephisto:according to several sources it's /30
if (naviData.Altimeter > 300 || naviData.Altimeter < -300) {
    // above 10m only write full meters
    write_ndigit_number_s(23, top_line, naviData.Altimeter / 30, 1000, 0);
} else {
    // up to 10m write meters.dm
    //write_number_u_10th(21, top_line, naviData.Altimeter / 3);
    write_ndigit_number_s_10th(23, top_line, naviData.Altimeter / 3, 100, 0);
}

// seccond line
draw_compass(11, top_line + 1, naviData.CompassHeading);

// TODO: verify correctness
uint16_t heading_home = (naviData.HomePositionDeviation.Bearing + 360 - naviData.CompassHeading) % 360;
//write_char_xy(21, top_line + 1, arrowdir[heading_conv(heading_home)]);
// finer resolution, 0xa0 is first character and we add the index 0 <= index < 16
write_char_xy(21, top_line + 1, 0xa0 + heading_fine_conv(heading_home));

write_ndigit_number_u(24, top_line + 1, naviData.HomePositionDeviation.Distance / 10, 100, 0);

// center
if (naviData.MKFlags & FLAG_MOTOR_RUN) { // should be engines running
    if (!(old_MKFlags & FLAG_MOTOR_RUN)) { // motors just started, clear middle
        clear();
        // update flags to paint display again if needed
        COSD_FLAGS &= ~COSD_ICONS_WRITTEN;
    }
    if (COSD_FLAGS & COSD_FLAG_ARTHORIZON) {
        draw_artificial_horizon(top_line + 2, bottom_line - 1, naviData.AngleNick, naviData.AngleRoll);
    }
    // motors are on, assume we were/are flying
    COSD_FLAGS |= COSD_WASFLYING;
} else {
    // stats
    if ((COSD_FLAGS & COSD_WASFLYING) && (COSD_FLAGS & COSD_FLAG_STATS)) {
                uint8_t line = 3;
        write_ascii_string_pgm(2, line, stats_item_pointers[0]); // max Altitude
        write_ndigit_number_s(18, line, max_Altimeter / 30, 1000, 0);
        write_char_xy(22, line, 204); // small meters m
        write_ascii_string_pgm(2, ++line, stats_item_pointers[1]); // max Speed
        write_ndigit_number_u(19, line, (uint16_t) (((uint32_t) max_GroundSpeed * (uint32_t) 9) / (uint32_t) 250), 100, 0);
        write_char_xy(22, line, 203); // km/h
        write_ascii_string_pgm(2, ++line, stats_item_pointers[2]); // max Distance
        write_ndigit_number_u(19, line, max_Distance / 10, 100, 0);
        write_char_xy(22, line, 204); // small meters m
        write_ascii_string_pgm(2, ++line, stats_item_pointers[3]); // min voltage
        write_ndigit_number_u_10th(18, line, min_UBat, 100, 0);
        write_char_xy(22, line, 0x9E); // small V
                if (COSD_FLAGS2 & COSD_FLAG_STROMREC) {
                        write_ascii_string_pgm(2, ++line, stats_item_pointers[7]); // ampere
                        write_ndigit_number_u_10th(18, line, max_ampere / 10, 100, 0);
                        write_char_xy(22, line, 0x9F); // small A
                }
        write_ascii_string_pgm(2, ++line, stats_item_pointers[4]); // max time
        write_time(16, line, max_FlyingTime);
        write_char_xy(22, line, 210); // fly clock
        write_ascii_string_pgm(2, ++line, stats_item_pointers[5]); // longitude
        write_gps_pos(15, line, naviData.CurrentPosition.Longitude);
        write_ascii_string_pgm(2, ++line, stats_item_pointers[6]); // latitude
        write_gps_pos(15, line, naviData.CurrentPosition.Latitude);
    } else if (COSD_FLAGS & COSD_FLAG_ARTHORIZON) { // if no stats there is space horizon
        draw_artificial_horizon(top_line + 2, bottom_line - 1, naviData.AngleNick, naviData.AngleRoll);
    }
}
if (COSD_FLAGS & COSD_FLAG_BIGVARIO) {
    draw_big_variometer(27, 8, naviData.Variometer);
}

// pre-bottom line
if (COSD_FLAGS2 & COSD_FLAG_STROMREC) {
        //write_ndigit_number_s(3, bottom_line - 1, ampere, 1000, 0);
        write_ndigit_number_u_10th(3, bottom_line - 1, ampere / 10, 100, 0);
        write_ndigit_number_s(10, bottom_line - 1, ampere_wasted, 1000, 0);
}

// bottom line
draw_battery(2, bottom_line, min_voltage, naviData.UBat, max_voltage);
write_ndigit_number_u_10th(3, bottom_line, naviData.UBat, 100, 0);
if (naviData.UBat <= min_voltage && last_UBat > min_voltage) {
    for (uint8_t x = 2; x < 8; x++)
        write_char_att_xy(x, bottom_line, BLINK);
} else if (naviData.UBat > min_voltage && last_UBat < min_voltage) {
    for (uint8_t x = 2; x < 8; x++)
        write_char_att_xy(x, bottom_line, 0);
}
// remember last values
last_UBat = naviData.UBat;

write_time(8, bottom_line, uptime);
write_time(15, bottom_line, naviData.FlyingTime);

write_ndigit_number_u(24, bottom_line, naviData.SatsInUse, 10, 0);

if (naviData.NCFlags & NC_FLAG_MANUAL_CONTROL) {
    write_char_xy(23, bottom_line, 0xB3); // rc transmitter
} else {
    write_char_xy(23, bottom_line, 0); // clear
}

if (naviData.NCFlags & NC_FLAG_CH) {
    write_char_xy(27, bottom_line, 231); // gps ch
} else if (naviData.NCFlags & NC_FLAG_PH) {
    write_char_xy(27, bottom_line, 230); // gps ph
} else { // (naviData.NCFlags & NC_FLAG_FREE)
    write_char_xy(27, bottom_line, 201); // sat2 (free)
}

//write_number_s(8, 5, RxDataLen);
//write_number_s(16, 5, setsReceived++);

// remember statistics (only when engines running)
if (naviData.MKFlags & FLAG_MOTOR_RUN) {
    if (naviData.Altimeter > max_Altimeter) max_Altimeter = naviData.Altimeter;
    if (naviData.GroundSpeed > max_GroundSpeed) max_GroundSpeed = naviData.GroundSpeed;
    if (naviData.HomePositionDeviation.Distance > max_Distance) {
        max_Distance = naviData.HomePositionDeviation.Distance;
    }
    if (naviData.UBat < min_UBat) min_UBat = naviData.UBat;
    if (naviData.FlyingTime > max_FlyingTime) max_FlyingTime = naviData.FlyingTime;
        if (ampere > max_ampere) max_ampere = ampere;
}

old_MKFlags = naviData.MKFlags;
seconds_since_last_data = 0;