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/****************************************************************************
2
 *   Copyright (C) 2009-2010 by Claas Anders "CaScAdE" Rathje               *
3
 *   admiralcascade@gmail.com                                               *
4
 *   Project-URL: http://www.mylifesucks.de/oss/c-osd/                      *
5
 *                                                                          *
6
 *   This program is free software; you can redistribute it and/or modify   *
7
 *   it under the terms of the GNU General Public License as published by   *
8
 *   the Free Software Foundation; either version 2 of the License.         *
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 *                                                                          *
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 *   This program is distributed in the hope that it will be useful,        *
11
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of         *
12
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          *
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 *   GNU General Public License for more details.                           *
14
 *                                                                          *
15
 *   You should have received a copy of the GNU General Public License      *
16
 *   along with this program; if not, write to the                          *
17
 *   Free Software Foundation, Inc.,                                        *
18
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.              *
19
 ****************************************************************************/
20
 
21
#include <avr/pgmspace.h> 
22
#include "main.h"
23
#include "osd_helpers.h"
24
#include "max7456_software_spi.h"
25
 
26
#if !(ALLCHARSDEBUG|(WRITECHARS != -1))
27
 
28
/* ##########################################################################
29
 * compass stuff
30
 * ##########################################################################*/
31
 
32
/**
33
 * convert the <heading> gotton from NC into an index
34
 */
35
uint8_t heading_conv(uint16_t heading) {
36
    if (heading > 23 && heading < 68) {
37
        //direction = "NE";
38
        return 0;
39
    } else if (heading > 67 && heading < 113) {
40
        //direction = "E ";
41
        return 1;
42
    } else if (heading > 112 && heading < 158) {
43
        //direction = "SE";
44
        return 2;
45
    } else if (heading > 157 && heading < 203) {
46
        //direction = "S ";
47
        return 3;
48
    } else if (heading > 202 && heading < 248) {
49
        //direction = "SW";
50
        return 4;
51
    } else if (heading > 247 && heading < 293) {
52
        //direction = "W ";
53
        return 5;
54
    } else if (heading > 292 && heading < 338) {
55
        //direction = "NW";
56
        return 6;
57
    }
58
    //direction = "N ";
59
    return 7;
60
}
61
 
62
/**
63
 * convert the <heading> gotton from NC into a more
64
 * precise index
65
 */
66
uint8_t heading_fine_conv(uint16_t heading) {
67
        heading = ((heading * 10) + 113) % 3600;
68
        return (heading / 225);
69
}
70
 
71
/**
72
 * draw a compass rose at <x>/<y> for <heading>
73
 */
74
void draw_compass(uint8_t x, uint8_t y, uint16_t heading) {
75
    //char* rose = "---N---O---S---W---N---O---S---W---N---O---S---W";
76
    static char rose[48] PROGMEM = {216, 215, 216, 211, 216, 215, 216, 213, 216, 215, 216, 212,
77
                    216, 215, 216, 214, 216, 215, 216, 211, 216, 215, 216, 213,
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                    216, 215, 216, 212, 216, 215, 216, 214, 216, 215, 216, 211,
79
                    216, 215, 216, 213, 216, 215, 216, 212, 216, 215, 216, 214};
80
        // the center is char 19 (north), we add the current heading in 8th
81
        // which would be 22.5 degrees, but float would bloat up the code
82
        // and *10 / 225 would take ages... so we take the uncorrect way
83
    uint8_t front = 19 + (heading / 22);
84
    for (uint8_t i = 0; i < 9; i++) {
85
                write_char_xy(x++, y, pgm_read_byte(&rose[front - 4 + i]));
86
    }
87
}
88
 
89
/* ##########################################################################
90
 * battery index
91
 * ##########################################################################*/
92
/**
93
 * draw a battery symbol at <x>/<y> according to <voltage>
94
 */
95
void draw_battery(uint8_t x, uint8_t y, uint8_t min_voltage, uint8_t voltage, uint8_t max_voltage) {
96
        uint8_t percent = (100* (voltage - min_voltage) / (max_voltage - min_voltage));
97
        if (percent > 100) percent = 100;
98
        if (voltage < min_voltage) percent = 0;
99
        write_char_xy(x, y, 0x9d - (percent * 13 / 100));
100
        //write_ndigit_number_u(x, y-1, percent * 13 / 100, 100, 0);
101
}
102
 
103
/* ##########################################################################
104
 * variometer
105
 * ##########################################################################*/
106
/**
107
 * draw variometer arrows at <x>/<y> according to <variometer>
108
 */
109
void draw_variometer(uint8_t x, uint8_t y, int16_t variometer) {
110
        if (variometer == 0) {
111
                write_char_xy(x, y, 0xbb); // plain line
112
        } else if (variometer > 0) { // gain height
113
                switch (variometer / 5){
114
                        case 0:
115
                                //write_char_xy(x, y, 0xba); // smallest arrow up
116
                                write_char_xy(x, y, 0x70); // one arrow up
117
                                break;
118
                        case 1:
119
                                //write_char_xy(x, y, 0xb9); // small arrow up
120
                                write_char_xy(x, y, 0x71); // two arrows up
121
                                break;
122
                        case 2:
123
                                //write_char_xy(x, y, 0xb8); // large arrow up
124
                                write_char_xy(x, y, 0x72); // three arrows up
125
                                break;
126
                        default:
127
                                //write_char_xy(x, y, 0xb7); // largest arrow up
128
                                write_char_xy(x, y, 0x73); // three black arrows up
129
                }
130
        } else { // sink
131
                switch (variometer / -5){
132
                        case 0:
133
                                //write_char_xy(x, y, 0xbc); // smallest arrow down
134
                                write_char_xy(x, y, 0x77); // one arrow down
135
                                break;
136
                        case 1:
137
                                //write_char_xy(x, y, 0xbd); // small arrow down
138
                                write_char_xy(x, y, 0x76); // two arrows down
139
                                break;
140
                        case 2:
141
                                //write_char_xy(x, y, 0xbe); // large arrow down
142
                                write_char_xy(x, y, 0x75); // three arrows down
143
                                break;
144
                        default:
145
                                //write_char_xy(x, y, 0xbf); // largest arrow down
146
                                write_char_xy(x, y, 0x74); // three black arrows down
147
                }
148
        }
149
}
150
 
151
// big vario arrays 
152
const char vario_00[5] PROGMEM = {0x00, 0x00, 0xc2, 0xff, 0xff};
153
const char vario_01[5] PROGMEM = {0x00, 0x00, 0xc2, 0xff, 0xc0};
154
const char vario_02[5] PROGMEM = {0x00, 0x00, 0xc2, 0xff, 0xc1};
155
const char vario_03[5] PROGMEM = {0x00, 0x00, 0xc2, 0xff, 0x00};
156
const char vario_04[5] PROGMEM = {0x00, 0x00, 0xc2, 0xc0, 0x00};
157
const char vario_05[5] PROGMEM = {0x00, 0x00, 0xc2, 0xc1, 0x00};
158
const char vario_06[5] PROGMEM = {0x00, 0x00, 0xc2, 0x00, 0x00};
159
const char vario_07[5] PROGMEM = {0x00, 0x00, 0xbb, 0x00, 0x00};
160
const char vario_08[5] PROGMEM = {0x00, 0x00, 0xc3, 0x00, 0x00};
161
const char vario_09[5] PROGMEM = {0x00, 0xc4, 0xc3, 0x00, 0x00};
162
const char vario_10[5] PROGMEM = {0x00, 0xc5, 0xc3, 0x00, 0x00};
163
const char vario_11[5] PROGMEM = {0x00, 0xff, 0xc3, 0x00, 0x00};
164
const char vario_12[5] PROGMEM = {0xc4, 0xff, 0xc3, 0x00, 0x00};
165
const char vario_13[5] PROGMEM = {0xc5, 0xff, 0xc3, 0x00, 0x00};
166
const char vario_14[5] PROGMEM = {0xff, 0xff, 0xc3, 0x00, 0x00};
167
const char* vario_pnt[15] PROGMEM = {vario_00, vario_01, vario_02, vario_03, vario_04,
168
                                vario_05, vario_06, vario_07, vario_08,
169
                                vario_09, vario_10, vario_11, vario_12,
170
                                vario_13, vario_14};
171
 
172
/**
173
 * draw a bigger vario with middle at <x>/<y> acording to <variometer>
174
 */
175
void draw_big_variometer(uint8_t x, uint8_t y, int16_t variometer) {   
176
        int16_t index = 7 + variometer;
177
        if (index > 14) index = 14;
178
        else if (index < 0) index = 0;
179
 
180
        write_string_pgm_down(x, y-2, (const char *) (pgm_read_word ( &(vario_pnt[index]))), 5);
181
}
182
 
183
#if (NEW_ARTHORIZON == 1)
184
/* ##########################################################################
185
 * NEW artificial horizon     By AGRESSiVA --=-- COPTERTRONiC
186
 * ##########################################################################*/
187
// draw routine 
188
int draw_noodles(int8_t pos_x, int8_t pos_y, int8_t num, int8_t old_num) {
189
        char noodle[5] = {225, 226, 227, 228, 229};
190
        int8_t line,car;
191
 
192
        line = num / 5;
193
        car = num - (line * 5);
194
        if (num != old_num) {
195
                write_char_xy(15 - pos_x , pos_y + (old_num), 0);
196
                }
197
 
198
        if (num < 0) {car = -1* car; car = 4 - car; line--; num = num - 5;}
199
        write_char_xy(15 - pos_x , pos_y + line, noodle[car]);
200
 
201
return line;
202
}
203
 
204
/**
205
 * calculate the rails of artificial horizon
206
 * receive <nick> and <roll> values
207
 */
208
void draw_artificial_horizon(uint8_t firstline, uint8_t lastline, int16_t nick, int16_t roll) {
209
        static int8_t old_ticy = 1,old_ticx = 0;
210
        static int8_t old1 = 0,old2 = 0,old3 = 0,old4, old5 = 0, old6 = 0,old7 = 0,old8 = 0;
211
        int8_t ticy = 0, ticx = 0;
212
        uint8_t center_x = 15;
213
        uint8_t center_y = lastline - firstline;
214
        center_y = 7;
215
        write_char_xy(center_x - 7 ,center_y,226);
216
        write_char_xy(center_x + 6 ,center_y,226);
217
 
218
 
219
#if FCONLY
220
                ticy = -1*(roll / 10);  // rescale roll from FC debug data
221
                ticx = -1*(nick * 10);  // rescale nick from FC debug data
222
#else
223
                ticy = -1*(roll / 2);
224
                ticx = -1*(nick / 1);
225
#endif
226
 
227
if (ticy >= 30) ticy = 30;  // limit y
228
if (ticx >= 30) ticx = 30;      // limit x
229
 
230
        //write_ndigit_number_u (0 , 5 , ticy ,3, 1);
231
        //write_ndigit_number_u (0 , 6 , ticx ,3, 1);
232
 
233
        if ((ticy != old_ticy) || (ticx != old_ticx)) {
234
                        old1 = draw_noodles(   4, 3,  (ticy /  2) + 20 + ticx, old1);
235
                        old2 = draw_noodles(   3, 3,  (ticy /  3) + 20 + ticx, old2);
236
                        old3 = draw_noodles(   2, 3,  (ticy /  6) + 20 + ticx, old3);
237
                        old4 = draw_noodles(   1, 3,  (ticy / 14) + 20 + ticx, old4);
238
                        old5 = draw_noodles( - 3, 3, -(ticy /  2) + 20 + ticx, old5);
239
                        old6 = draw_noodles( - 2, 3, -(ticy /  3) + 20 + ticx, old6);
240
                        old7 = draw_noodles( - 1, 3, -(ticy /  6) + 20 + ticx, old7);
241
                        old8 = draw_noodles(   0, 3, -(ticy / 14) + 20 + ticx, old8);
242
                        }
243
        // update old vars
244
        old_ticy = ticy;
245
        old_ticx = ticx;
246
}
247
// end NEW ARTiFiCiAL HORiZON
248
#else
249
 
250
/* ##########################################################################
251
 * OLD artificial horizon
252
 * ##########################################################################*/
253
// remember last time displayed values
254
int8_t old_af_x = -1, old_af_y = -1;
255
 
256
/**
257
 * draw roll und nick indicators (could be enhanced to full artificial horizon)
258
 * from line <firstline> to <listlines> for given <nick> and <roll> values
259
 */
260
 
261
 
262
void draw_artificial_horizon(uint8_t firstline, uint8_t lastline, int16_t nick, int16_t roll) {
263
        char noodle[5] = {225, 225, 226, 227, 227};
264
        uint8_t center_x = 15;
265
        uint8_t center_y = lastline - firstline;
266
        center_y = 7;
267
        write_char_xy(center_x,center_y,228);
268
        uint8_t cpos, nicky, rollx;
269
 
270
        // which line
271
        int8_t ypos =  nick / 20;
272
        // which character from the array?
273
        if (nick < 0) {
274
                cpos = -1*((nick - (ypos * 20))/4);
275
                ypos--;
276
        } else cpos = 4-((nick - (ypos * 20))/4);
277
        if (cpos > 4) cpos = 4;
278
 
279
        nicky = center_y - ypos;
280
        if (nicky > lastline) nicky = lastline;
281
        else if (nicky < firstline) nicky = firstline;
282
 
283
        // ensure roll-borders
284
        rollx = (roll / 8)+15;
285
        if (rollx < 2) rollx = 2;
286
        else if (rollx > 28) rollx = 28;
287
 
288
 
289
        // clear roll
290
        if (old_af_x != rollx && old_af_x >= 0) {
291
                write_char_xy(old_af_x, lastline, 0);
292
        }
293
 
294
        // clear nick
295
        if (old_af_y != nicky && old_af_y >= 0) {
296
                write_char_xy(center_x-1, old_af_y, 0);
297
                write_char_xy(center_x+1, old_af_y, 0);
298
        }
299
 
300
 
301
        // draw nick
302
        write_char_xy(center_x-1, nicky, noodle[cpos]);
303
        write_char_xy(center_x+1, nicky, noodle[cpos]);
304
 
305
        // draw roll
306
        write_char_xy(rollx, lastline, 229);
307
 
308
        // update old vars
309
        old_af_x = rollx;
310
        old_af_y = nicky;
311
 
312
        // debug numbers
313
        //write_3digit_number_u(20,6,cpos);
314
        //write_number_s(20,7,ypos);    
315
        //write_number_s(0,7,nick);             
316
        //write_number_s(18,11,roll);   
317
}
318
#endif //old artificial horizon
319
 
320
#endif // debug