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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.              *

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

#include <avr/io.h>

#include <avr/eeprom.h>

#include <avr/pgmspace.h>

#include <avr/interrupt.h>

#include <util/delay.h>

#include "max7456_software_spi.h"

#include "config.h"

#include "main.h"

#include "buttons.h"

#include "usart1.h"

#if !(ALLCHARSDEBUG|(WRITECHARS != -1))

uint8_t EEMEM ee_checkbyte1 = CHECKBYTE1;

uint8_t EEMEM ee_checkbyte2 = CHECKBYTE2;

uint8_t EEMEM ee_COSD_FLAGS_MODES = 0;

uint8_t EEMEM ee_COSD_FLAGS_CONFIG = 0;

uint8_t EEMEM ee_COSD_DISPLAYMODE = 0;

// video modes

const char VM_PAL[] PROGMEM = "PAL ";

const char VM_NTSC[] PROGMEM = "NTSC";

const displaymode_t * mode;

const char ee_message0[] PROGMEM = "Loading from EEPROM";

const char ee_message1[] PROGMEM = "No Data in EEPROM";

const char* ee_msg[] PROGMEM = {ee_message0, ee_message1};

/**

 * read data saved in eeprom, print out message if <verbose> is set

 */

void get_eeprom(uint8_t verbose) {

    if (eeprom_read_byte(&ee_checkbyte1) == CHECKBYTE1 && eeprom_read_byte(&ee_checkbyte2) == CHECKBYTE2) {

        if (verbose) write_ascii_string_pgm(2, 2, ee_msg[0]); // Loading data

        COSD_FLAGS_MODES = eeprom_read_byte(&ee_COSD_FLAGS_MODES);

        COSD_FLAGS_CONFIG = eeprom_read_byte(&ee_COSD_FLAGS_CONFIG);

        COSD_DISPLAYMODE = eeprom_read_byte(&ee_COSD_DISPLAYMODE);

        //if (verbose) write_ndigit_number_u(23, 11, COSD_DISPLAYMODE, 2, 0);

    } else {

        if (verbose) write_ascii_string_pgm(2, 2, ee_msg[1]); // Loading data

    }

}

/**

 * save data to eeprom

 */

void save_eeprom() {

    eeprom_write_byte(&ee_checkbyte1, CHECKBYTE1);

    eeprom_write_byte(&ee_checkbyte2, CHECKBYTE2);

    eeprom_write_byte(&ee_COSD_FLAGS_MODES, COSD_FLAGS_MODES);

    eeprom_write_byte(&ee_COSD_FLAGS_CONFIG, COSD_FLAGS_CONFIG);

    eeprom_write_byte(&ee_COSD_DISPLAYMODE, COSD_DISPLAYMODE);

}

/**

 * auto config some stuff on startup, currently only battery cells

 */

void init_cosd(uint8_t UBat) {

    clear();

    write_ascii_string_pgm(2, 1, PSTR("C-OSD Init"));

    write_ascii_string_pgm(2, 4, PSTR(BUILDDATE));

#if FCONLY

    write_ascii_string_pgm(2, 3, PSTR("FC only Mode"));

#else

    write_ascii_string_pgm(2, 3, PSTR("NaviCtrl Mode"));

        usart1_EnableTXD();

        usart1_puts_pgm(PSTR(REQUEST_UART_TO_FC));     

        usart1_DisableTXD();

#endif

        usart1_request_blocking('Q', PSTR(REQUEST_CURRENT_SETTING));

        //write_ascii_char(4 + 12 * 30, rxd_buffer[2]);

    paramset_serial setting;

    setting = *((paramset_serial*)pRxData);

        write_ascii_string_pgm(2, 6, PSTR("Setting: "));

        write_ndigit_number_u(11, 6, setting.SettingsIndex, 1, 1);

        write_ascii_string_len(13, 6, setting.param.Name, 12); 

        uint8_t cells = 0;

        write_ascii_string_pgm(2, 8, PSTR("Battery:")); // Guessing Number of Cells

        if (CELL_NUM == -1) {        

                #define MAX_CELL_VOLTAGE 43 // max cell volatage for LiPO

                if (setting.param.UnterspannungsWarnung < 50) {

                        // up to 6s LiPo, less than 2s is technical impossible

                        for(cells = 2; cells < 7; cells++) {

                                if(UBat < cells * MAX_CELL_VOLTAGE) break;

                        }

                        min_voltage = cells * setting.param.UnterspannungsWarnung;             

                } else {

                        min_voltage = setting.param.UnterspannungsWarnung;

                        cells = min_voltage / CELL_VOLT_MIN;

                }

                //write_ndigit_number_u(10, 13, setting.param.UnterspannungsWarnung, 3, 1);     

    } else {

        cells = CELL_NUM;

                min_voltage = cells * CELL_VOLT_MIN;

    }

        max_voltage = cells * CELL_VOLT_MAX;

    write_ndigit_number_u(11, 8, cells, 1, 0);

        write_ascii_string_pgm(13, 8, PSTR("Cells")); // Number of Cells    

    write_ascii_string_pgm(2, 9, PSTR("Warn:")); // Warn Voltage

    write_ndigit_number_s_10th(8, 9, min_voltage, 3, 0);

    write_ascii_string_pgm(14, 9, PSTR("Max:")); // Max Voltage

    write_ndigit_number_s_10th(20, 9, max_voltage, 3, 0);

    get_eeprom(1);

    //write_ascii_string_pgm(23, 2, vm[COSD_FLAGS & COSD_FLAG_NTSC]);

    if (COSD_FLAGS_CONFIG & COSD_FLAG_NTSC) {

        write_ascii_string_pgm(23, 1, VM_NTSC);

    } else {

        write_ascii_string_pgm(23, 1, VM_PAL);

    }

    // request version from board

#if FCONLY

    //usart1_request_mk_data(0, 'v', 0);

    write_ascii_string_pgm(2, 11, PSTR("FC VERSION: ........"));

        usart1_request_blocking('V', PSTR(REQUEST_FC_VERSION));

#else

        usart1_request_nc_uart();

    //usart1_request_mk_data(1, 'v', 0);

    write_ascii_string_pgm(2, 11, PSTR("NC VERSION: ........"));

    usart1_request_blocking('V', PSTR(REQUEST_NC_VERSION));    

#endif

    str_VersionInfo VersionInfo;

    VersionInfo = *((str_VersionInfo*)pRxData);

    write_ndigit_number_u(14, 11, VersionInfo.SWMajor, 3, 1);

    write_ndigit_number_u(18, 11, VersionInfo.SWMinor, 3, 1);

    write_ascii_char(22 + 11 * 30, 'a' + VersionInfo.SWPatch);

    // end version request

#if FCONLY

    COSD_DISPLAYMODE %= (sizeof (fcdisplaymodes) / sizeof (displaymode_t));

    mode = fcdisplaymodes;

    mode += COSD_DISPLAYMODE;

    osd_fcmode = (int(*)(void)) pgm_read_word(&mode->dfun);

    // re-request data ever 100ms from FC;

    //usart1_request_mk_data(0, 'd', 100);

#else

    COSD_DISPLAYMODE %= (sizeof (ncdisplaymodes) / sizeof (displaymode_t));

    mode = ncdisplaymodes;

    mode += COSD_DISPLAYMODE;

    osd_ncmode = (int(*)(void)) pgm_read_word(&mode->dfun);

    // re-request OSD Data from NC every 100ms

    //usart1_request_mk_data(1, 'o', 100);

#endif

    _delay_ms(5000);

    clear();

    // update flags to paint display again because of clear

    COSD_FLAGS_RUNTIME &= ~COSD_ICONS_WRITTEN;

}

/* ##########################################################################

 * A simple config menu for the flags

 * ##########################################################################*/

/**

 * helper function for flag display

 */

void onoff(uint8_t col, uint8_t line, uint8_t onoff) {

    if (onoff) {

        write_ascii_string_pgm(col, line, PSTR("ON "));

    } else {

        write_ascii_string_pgm(col, line, PSTR("OFF"));

    }

}

/**

 * helper function for menu updating

 */

void config_menu_drawings(uint8_t chosen) {

    static uint8_t old_y = 0;

    uint8_t x = MENU_LEFT, y = MENU_TOP, line = MENU_TOP;

    if (chosen > 5 && chosen < 12) { // right

        x = MENU_MIDDLE;

        y = chosen - 6 + MENU_TOP;

    } else if (chosen < 7) {

        y = chosen + MENU_TOP;

    } else {

        y = chosen - 6 + MENU_TOP;

    }

    // clear prevoius _cursor_ and draw current

    for (uint8_t myx = MENU_LEFT; myx < 29; myx++) {

        write_char_att_xy(myx, old_y, 0);

        if (myx > x - 1 && myx < x + 14) {

            write_char_att_xy(myx, y, BLACKBG | INVERT);

        }

    };

    write_ascii_string_pgm(MENU_LEFT, line, PSTR("Video"));

    if (COSD_FLAGS_CONFIG & COSD_FLAG_NTSC) {

        write_ascii_string_pgm(MENU_LEFT + 10, line, VM_NTSC);

    } else {

        write_ascii_string_pgm(MENU_LEFT + 10, line, VM_PAL);

    }

    write_ascii_string_pgm(MENU_LEFT, ++line, PSTR("Full HUD"));

    onoff(MENU_LEFT + 10, line, COSD_FLAGS_MODES & COSD_FLAG_HUD);

    write_ascii_string_pgm(MENU_LEFT, ++line, PSTR("Horizon"));

    onoff(MENU_LEFT + 10, line, COSD_FLAGS_MODES & COSD_FLAG_ARTHORIZON);

    write_ascii_string_pgm(MENU_LEFT, ++line, PSTR("Aggr.Hor."));

    onoff(MENU_LEFT + 10, line, COSD_FLAGS_MODES & COSD_FLAG_AGGRHORIZON);

    write_ascii_string_pgm(MENU_LEFT, ++line, PSTR("Stats"));

    onoff(MENU_LEFT + 10, line, COSD_FLAGS_MODES & COSD_FLAG_STATS);

    write_ascii_string_pgm(MENU_LEFT, ++line, PSTR("A by FC"));

    onoff(MENU_LEFT + 10, line, COSD_FLAGS_MODES & COSD_FLAG_FCCURRENT);

    // 2nd col

    line = 2;

    write_ascii_string_pgm(MENU_MIDDLE, line, PSTR("V C-Strom"));

    onoff(MENU_MIDDLE + 10, line, COSD_FLAGS_MODES & COSD_FLAG_STROMVOLT);

    write_ascii_string_pgm(MENU_MIDDLE, ++line, PSTR("Height by"));

    if (COSD_FLAGS_CONFIG & COSD_FLAG_GPSHEIGHT) {

        write_ascii_string_pgm(MENU_MIDDLE + 10, line, PSTR(" GPS"));

    } else {

        write_ascii_string_pgm(MENU_MIDDLE + 10, line, PSTR("BARO"));

    }

    write_ascii_string_pgm(MENU_MIDDLE, ++line, PSTR("Feet/mph"));

    onoff(MENU_MIDDLE + 10, line, COSD_FLAGS_CONFIG & COSD_FLAG_FEET);

    write_ascii_string_pgm(MENU_MIDDLE, ++line, PSTR("Big Vario"));

    onoff(MENU_MIDDLE + 10, line, COSD_FLAGS_MODES & COSD_FLAG_BIGVARIO);

    // bottom

    write_ascii_string_pgm(MENU_LEFT, 9, PSTR("Reset uptime"));

    write_ascii_string_pgm(MENU_LEFT, 10, PSTR("Display Mode"));

    write_ascii_string_pgm(18, 10, (const char *)(pgm_read_word(&(mode->desc))));

    write_ascii_string_pgm(MENU_LEFT, 11, PSTR("Save config"));

    write_ascii_string_pgm(MENU_LEFT, 12, PSTR("EXIT"));

    old_y = y;

}

/**

 * some sort of clicking response in the menu

 */

void config_menu_doclick(uint8_t chosen) {

    write_ascii_string_pgm(MENU_LEFT, chosen + MENU_TOP - 6, PSTR("DONE              "));

    _delay_ms(500);

    config_menu_drawings(chosen);

}

/**

 * a simple config menu tryout

 */

void config_menu(void) {

    // disable interrupts (makes the menu more smoothely)

    cli();

    // clear screen

    clear();

    uint8_t chosen = 0;

    uint8_t inmenu = 1;

    write_ascii_string_pgm(6, 1, PSTR("C-OSD Config Menu"));

    // wait a bit before doing stuff so user has chance to release button

    _delay_ms(250);

    config_menu_drawings(chosen);

    while (inmenu) {

        if (s2_pressed()) {

            chosen = (chosen + 1) % 17;

            if (chosen == 10) chosen = 13; // SKIP unused menu space for now

            config_menu_drawings(chosen);

            _delay_ms(500);

        } else if (s1_pressed()) {

            switch (chosen) {

                case 0: // NTSC or PAL

                    COSD_FLAGS_CONFIG ^= COSD_FLAG_NTSC;

                    // Setup Video Mode

                    if (COSD_FLAGS_CONFIG & COSD_FLAG_NTSC) {

                        // NTSC + enable display immediately (VM0)

                        spi_send_byte(0x00, 0b00001000);

                        bottom_line = 12;

                    } else {

                        // PAL + enable display immediately (VM0)

                        spi_send_byte(0x00, 0b01001000);

                        bottom_line = 14;

                    }

                    break;

                case 1: // full HUD

                    COSD_FLAGS_MODES ^= COSD_FLAG_HUD;

                    break;

                case 2: // art horizon

                    COSD_FLAGS_MODES ^= COSD_FLAG_ARTHORIZON;

                    break;

                case 3: // aggressiva horizon

                    COSD_FLAGS_MODES ^= COSD_FLAG_AGGRHORIZON;

                    break;

                case 4: // statistics

                    COSD_FLAGS_MODES ^= COSD_FLAG_STATS;

                    break;

                case 5: // current by fc

                    COSD_FLAGS_MODES ^= COSD_FLAG_FCCURRENT;

                    break;

                case 6: // 2nd voltage by c-strom

                    COSD_FLAGS_MODES ^= COSD_FLAG_STROMVOLT;

                    break;

                case 7: // GPS or BARO height

                    COSD_FLAGS_CONFIG ^= COSD_FLAG_GPSHEIGHT;

                    break;

                case 8: // Feet and mph?

                    COSD_FLAGS_CONFIG ^= COSD_FLAG_FEET;

                    break;

                case 9: // big vario

                    COSD_FLAGS_MODES ^= COSD_FLAG_BIGVARIO;

                    break;

                case 13: // reset uptime

                    uptime = 0;

                    config_menu_doclick(chosen);

                    break;

                case 14: // change mode

#if FCONLY

                    COSD_DISPLAYMODE = (COSD_DISPLAYMODE + 1) % (sizeof (fcdisplaymodes) / sizeof (displaymode_t));

                    mode = fcdisplaymodes;

                    mode += COSD_DISPLAYMODE;

                    osd_fcmode = (int(*)(void)) pgm_read_word(&mode->dfun);

#else

                    COSD_DISPLAYMODE = (COSD_DISPLAYMODE + 1) % (sizeof (ncdisplaymodes) / sizeof (displaymode_t));

                    mode = ncdisplaymodes;

                    mode += COSD_DISPLAYMODE;

                    osd_ncmode = (int(*)(void)) pgm_read_word(&mode->dfun);

#endif

                    break;

                case 15: // save

                    save_eeprom();

                    config_menu_doclick(chosen);

                    break;

                case 16: // exit

                    inmenu = 0;

                    config_menu_doclick(chosen);

                    break;

            }

            config_menu_drawings(chosen);

            _delay_ms(250);

        }

    }

    // clear screen up again

    clear();

    // update flags to paint display again if needed

    COSD_FLAGS_RUNTIME &= ~COSD_ICONS_WRITTEN;

    // enable interrupts again

    sei();

}

#endif