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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"

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;

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

// video modes

const char VM_PAL[] PROGMEM = "PAL ";

const char VM_NTSC[] PROGMEM = "NTSC";

const displaymode_t * mode;

#endif

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

const char ee_message1[] PROGMEM = "No saved 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 !(ALLCHARSDEBUG|(WRITECHARS != -1))

                if (verbose) write_ascii_string_pgm(2, 9, ee_msg[0]); // Loading data

                #endif

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

                if (verbose) write_ascii_string_pgm(2, 9, ee_msg[1]); // Loading data

                #endif

        }

}

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

/**

 * 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

 * TODO: this is testing stuff, strings should go progmem and so on...

 */

void init_cosd(uint8_t UBat) {

    clear();

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

#if FCONLY

        write_ascii_string_pgm(2, 2, PSTR("FC only Mode")); // FC only mode

#else

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

#endif

    write_ascii_string_pgm(2, 3, PSTR(BUILDDATE));

    uint8_t cellnum = 0;

    if (CELL_NUM == -1) {

                write_ascii_string_pgm(2, 4, PSTR("Guessing Number of Cells")); // Guessing Number of Cells

        do {

            cellnum++;

        } while (UBat > ((cellnum * CELL_VOLT_MAX) + 23));

    } else {

        cellnum = CELL_NUM;

    }

    min_voltage = cellnum * CELL_VOLT_MIN;

    max_voltage = cellnum * CELL_VOLT_MAX;

        write_ascii_string_pgm(2, 5, PSTR("Number of Cells:")); // Number of Cells

    write_ndigit_number_u(21, 5, cellnum, 1, 0);

        write_ascii_string_pgm(2, 6, PSTR("Warn Voltage   :")); // Warn Voltage

    write_ndigit_number_s_10th(20, 6, min_voltage, 3, 0);

        write_ascii_string_pgm(2, 7, PSTR("Max Voltage    :")); // Max Voltage

    write_ndigit_number_s_10th(20, 7, 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, 2, VM_NTSC);

        } else {

                write_ascii_string_pgm(23, 2, VM_PAL);

        }

        // request version from board

        rxd_buffer_locked = 0;

        #if FCONLY

        usart1_request_mk_data(0, 'v', 0);

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

        #else

        usart1_request_mk_data(1, 'v', 0);

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

        #endif

        // wait for response

        while (rxd_buffer_locked == 0) {

                asm("nop");

        }

        Decode64();

        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(3000);

    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 line, uint8_t onoff) {      

        if (onoff) {             

                write_ascii_string_pgm(23, line, PSTR("ON "));

        } else {

                write_ascii_string_pgm(23, line, PSTR("OFF"));

        }

}

/**

 * helper function for menu updating

 */

void config_menu_drawings(uint8_t chosen) {

        uint8_t line = 2;

    // clear prevoius _cursor_

    //write_char_xy(3, line + ((chosen + 11) % 12), 0x00);

        for (uint8_t x = 2; x < 28; x++) {             

                write_char_att_xy(x, line + ((chosen + 11) % 12), 0);

                write_char_att_xy(x, line + chosen, BLACKBG | INVERT);

        };

        // draw current _cursor_        

        //write_char_xy(3, line + chosen, 0xD9);

        write_ascii_string_pgm(4, line, PSTR("Video Mode"));

        if (COSD_FLAGS_CONFIG & COSD_FLAG_NTSC) {

                write_ascii_string_pgm(23, line, VM_NTSC);

        } else {

                write_ascii_string_pgm(23, line, VM_PAL);

        }

        write_ascii_string_pgm(4, ++line, PSTR("Full HUD"));

        onoff(line, COSD_FLAGS_MODES & COSD_FLAG_HUD);

        write_ascii_string_pgm(4, ++line, PSTR("Art Horizon in HUD"));

        onoff(line, COSD_FLAGS_MODES & COSD_FLAG_ARTHORIZON);

        write_ascii_string_pgm(4, ++line, PSTR("Big Vario bar"));

        onoff(line, COSD_FLAGS_MODES & COSD_FLAG_BIGVARIO);

        write_ascii_string_pgm(4, ++line, PSTR("Statistics"));

    onoff(line, COSD_FLAGS_MODES & COSD_FLAG_STATS);

        write_ascii_string_pgm(4, ++line, PSTR("Current by FC"));

        onoff(line, COSD_FLAGS_MODES & COSD_FLAG_FCCURRENT);

        write_ascii_string_pgm(4, ++line, PSTR("Voltage by C-Strom"));

        onoff(line, COSD_FLAGS_MODES & COSD_FLAG_STROMVOLT);

        write_ascii_string_pgm(4, ++line, PSTR("Reset uptime"));

        write_ascii_string_pgm(4, ++line, PSTR("Display Mode"));    

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

        write_ascii_string_pgm(4, ++line, PSTR("Height by"));

        if (COSD_FLAGS_CONFIG & COSD_FLAG_GPSHEIGHT) {

                write_ascii_string_pgm(20, line, PSTR(" GPS"));

        } else {

                write_ascii_string_pgm(20, line, PSTR("BARO"));

        }

        write_ascii_string_pgm(4, ++line, PSTR("Save config"));

        write_ascii_string_pgm(4, ++line, PSTR("EXIT"));

}

/**

 * some sort of clicking response in the menu

 */

void config_menu_doclick(uint8_t chosen) {

    write_ascii_string_pgm(4, chosen + 2, 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) % 12;

                        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;

                                        }

                    config_menu_drawings(chosen);

                    break;

                case 1: // full HUD

                    COSD_FLAGS_MODES ^= COSD_FLAG_HUD;

                    config_menu_drawings(chosen);

                    break;

                case 2: // art horizon

                    COSD_FLAGS_MODES ^= COSD_FLAG_ARTHORIZON;

                    config_menu_drawings(chosen);

                    break;

                case 3: // big vario

                    COSD_FLAGS_MODES ^= COSD_FLAG_BIGVARIO;

                    config_menu_drawings(chosen);

                    break;

                case 4: // statistics

                    COSD_FLAGS_MODES ^= COSD_FLAG_STATS;

                    config_menu_drawings(chosen);

                    break;

                /*case 5: // warnings

                    COSD_FLAGS_MODES ^= COSD_FLAG_WARNINGS;

                    config_menu_drawings(chosen);

                    break;*/

                case 5: // current by fc

                    COSD_FLAGS_MODES ^= COSD_FLAG_FCCURRENT;

                    config_menu_drawings(chosen);

                    break;

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

                    COSD_FLAGS_MODES ^= COSD_FLAG_STROMVOLT;

                    config_menu_drawings(chosen);

                    break;

                case 7: // reset uptime

                    uptime = 0;

                    config_menu_doclick(chosen);

                    break;

                case 8: // 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

                                        config_menu_drawings(chosen);

                    break;

                case 9: // GPS or BARO height

                    COSD_FLAGS_CONFIG ^= COSD_FLAG_GPSHEIGHT;

                    config_menu_drawings(chosen);

                    break;

                case 10: // save

                    save_eeprom();

                    config_menu_doclick(chosen);

                    break;

                case 11: // exit

                                        inmenu = 0;

                    break;

            }

            _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