forked from ttrftech/NanoVNA
-
Notifications
You must be signed in to change notification settings - Fork 48
/
plot.c
2302 lines (2191 loc) · 65.7 KB
/
plot.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/* All rights reserved.
*
* This 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 3, or (at your option)
* any later version.
*
* The software 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 GNU Radio; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#include <math.h>
#include <string.h>
#include "ch.h"
#include "hal.h"
#include "chprintf.h"
#include "nanovna.h"
#pragma GCC push_options
#pragma GCC optimize ("Os") // Makes the code just a bit faster, disable during debugging.
#ifdef __SCROLL__
uint16_t _grid_y = (CHART_BOTTOM / NGRIDY);
uint16_t graph_bottom = CHART_BOTTOM;
#endif
static void cell_draw_marker_info(int x0, int y0);
static void cell_grid_line_info(int x0, int y0);
static void cell_blit_bitmap(int x, int y, uint16_t w, uint16_t h, const uint8_t *bitmap);
static void draw_battery_status(void);
static void update_waterfall(void);
#ifdef __LEVEL_METER__
static void update_level_meter(void);
char level_text[20];
char freq_text[20];
#endif
void cell_draw_test_info(int x0, int y0);
int cell_printf(int16_t x, int16_t y, const char *fmt, ...);
#ifndef wFONT_GET_DATA
static void cell_drawstring_size(char *str, int x, int y, int size);
#endif
static int16_t grid_offset;
static int16_t grid_width;
static freq_t grid_span;
uint16_t area_width = AREA_WIDTH_NORMAL;
uint16_t area_height; // initialized in main() = AREA_HEIGHT_NORMAL;
// Cell render use spi buffer
pixel_t *cell_buffer = (pixel_t *)spi_buffer;
// Check buffer size
#if CELLWIDTH*CELLHEIGHT > SPI_BUFFER_SIZE
#error "Too small spi_buffer size SPI_BUFFER_SIZE < CELLWIDTH*CELLHEIGH"
#endif
// indicate dirty cells (not redraw if cell data not changed)
#define MAX_MARKMAP_X ((LCD_WIDTH+CELLWIDTH-1)/CELLWIDTH)
#define MAX_MARKMAP_Y ((LCD_HEIGHT+CELLHEIGHT-1)/CELLHEIGHT)
// Define markmap mask size
#if MAX_MARKMAP_X <= 8
typedef uint8_t map_t;
#elif MAX_MARKMAP_X <= 16
typedef uint16_t map_t;
#elif MAX_MARKMAP_X <= 32
typedef uint32_t map_t;
#endif
static map_t markmap[2][MAX_MARKMAP_Y+1];
static uint8_t current_mappage = 0;
// Trace data cache, for faster redraw cells
// Set data size types depend from screen resolution
// Set type for x resolution
#if LCD_WIDTH < 256
typedef uint8_t index_x_t;
#else
typedef uint16_t index_x_t;
#endif
// Set type for y resolution
#if LCD_HEIGHT < 256
typedef uint8_t index_y_t;
#else
typedef uint16_t index_y_t;
#endif
static index_x_t trace_index_x[POINTS_COUNT];
static index_y_t trace_index_y[TRACES_MAX][POINTS_COUNT];
uint16_t marker_color(int m_i)
{
return LCD_TRACE_1_COLOR + markers[m_i].trace;
}
#if 1
#define float2int(v) ((int)(v))
#else
static int
float2int(float v)
{
if (v < 0) return v - 0.5;
if (v > 0) return v + 0.5;
return 0;
}
#endif
void update_grid(void)
{
freq_t gdigit = 1000000000;
freq_t fstart = get_sweep_frequency(ST_START) + (setting.frequency_offset - FREQUENCY_SHIFT);
freq_t fspan = get_sweep_frequency(ST_SPAN);
freq_t grid;
if (fspan == 0) {
fspan = setting.actual_sweep_time_us; // Time in uS
fstart = 0;
}
if (config.gridlines == 0) {
grid = fspan/10;
} else {
if (config.gridlines < 3)
config.gridlines = 6;
while (gdigit > 1) {
grid = 5 * gdigit;
if (fspan / grid >= config.gridlines)
break;
grid = 2 * gdigit;
if (fspan / grid >= config.gridlines)
break;
grid = gdigit;
if (fspan / grid >= config.gridlines)
break;
gdigit /= 10;
}
}
grid_span = grid;
if (grid > 1000) {
grid_offset = (WIDTH) * ((fstart % grid) / 100) / (fspan / 100);
grid_width = (WIDTH) * (grid / 100) / (fspan / 1000);
} else {
grid_offset = (WIDTH) * ((fstart % grid)) / (fspan);
grid_width = (WIDTH) * (grid) / (fspan/10);
}
if (config.gridlines == 0)
grid_offset = 0;
// if (setting.waterfall)
set_level_meter_or_waterfall();
redraw_request |= REDRAW_FREQUENCY | REDRAW_AREA;
}
#if 0
static int
rectangular_grid(int x, int y)
{
//#define FREQ(x) (((x) * (fspan / 1000) / (WIDTH-1)) * 1000 + fstart)
//int32_t n = FREQ(x-1) / fgrid;
//int32_t m = FREQ(x) / fgrid;
//if ((m - n) > 0)
//if (((x * 6) % (WIDTH-1)) < 6)
//if (((x - grid_offset) % grid_width) == 0)
if (x == 0 || x == WIDTH-1)
return 1;
if ((y % GRIDY) == 0)
return 1;
if ((((x + grid_offset) * 10) % grid_width) < 10)
return 1;
return 0;
}
#endif
#ifdef __HAM_BAND__
typedef const struct {
freq_t start;
freq_t stop;
} ham_bands_t;
const ham_bands_t ham_bands[] =
{
{135700, 137800},
{472000, 479000},
{1800000, 2000000},
{3500000, 3800000},
{5250000, 5450000},
{7000000, 7200000},
{10100000, 10150000},
{14000000, 14350000},
{18068000, 18168000},
{21000000, 21450000},
{24890000, 24990000},
{28000000, 29700000},
{50000000, 52000000},
{70000000, 70500000},
{144000000, 148000000},
{222000000, 225000000},
{420000000, 450000000},
{902000000, 928000000},
#ifdef TINYSA4
{1240000000,1300000000},
{2300000000, 2310000000},
{2390000000, 2450000000},
{3300000000, 3500000000},
{5650000000, 5925000000},
{10000000000, 10500000000}
#endif
};
#ifdef TINYSA4
const int ham_band_max = 24;
#else
const int ham_band_max = 18;
#endif
int ham_band(int x) // Search which index in the frequency tabled matches with frequency f using actual_rbw
{
freq_t f = getFrequency(x) + (setting.frequency_offset - FREQUENCY_SHIFT);
int L = 0;
int R = ham_band_max - 1;
while (L <= R) {
int m = (L + R) / 2;
if (ham_bands[m].stop < f)
L = m + 1;
else if (ham_bands[m].start > f)
R = m - 1;
else
return true; // index is m
}
return false;
}
#endif
static int
rectangular_grid_x(int x)
{
x -= CELLOFFSETX;
if (x < 0) return 0;
if (x == 0 || x == WIDTH)
return 1;
if ((((x + grid_offset) * 10) % grid_width) < 10)
return 1;
return 0;
}
static int
rectangular_grid_y(int y)
{
if (y < 0)
return 0;
if ((y % GRIDY) == 0)
return 1;
return 0;
}
#if 0
int
set_strut_grid(int x)
{
uint16_t *buf = spi_buffer;
int y;
for (y = 0; y < HEIGHT; y++) {
int c = rectangular_grid(x, y);
c |= smith_grid(x, y);
*buf++ = c;
}
return y;
}
void
draw_on_strut(int v0, int d, int color)
{
int v;
int v1 = v0 + d;
if (v0 < 0) v0 = 0;
if (v1 < 0) v1 = 0;
if (v0 >= HEIGHT) v0 = HEIGHT-1;
if (v1 >= HEIGHT) v1 = HEIGHT-1;
if (v0 == v1) {
v = v0; d = 2;
} else if (v0 < v1) {
v = v0; d = v1 - v0 + 1;
} else {
v = v1; d = v0 - v1 + 1;
}
while (d-- > 0)
spi_buffer[v++] |= color;
}
#endif
/*
* calculate log10f(abs(gamma))
*/
#if 0
float
index_to_value(const int i)
{
return(value(actual_t[i]));
}
#endif
#ifdef __MARKER_CACHE__
float marker_cache[MARKERS_MAX];
bool marker_cache_valid[MARKERS_MAX];
int32_t marker_cache_index[MARKERS_MAX];
void
clear_marker_cache(void)
{
for (int i = 0; i<MARKERS_MAX; i++) {
marker_cache_valid[i] = false;
}
}
#endif
float
marker_to_value(const int i)
{
#ifdef __MARKER_CACHE__
if (markers[i].mtype & M_AVER && linear_averaging && marker_cache_valid[i] && marker_cache_index[i] == markers[i].index)
return marker_cache[i];
#endif
float *ref_marker_levels;
ref_marker_levels = measured[markers[i].trace];
float v = value(ref_marker_levels[markers[i].index]);
if (markers[i].mtype & M_AVER) {
int old_unit = setting.unit;
if (markers[i].mtype & M_NOISE
#ifdef TINYSA4
&& linear_averaging
#endif
)
setting.unit = U_WATT; // Noise averaging should always be done in Watts
v = 0;
for (int i=0; i<sweep_points; i++)
v += value(ref_marker_levels[i]); // TODO this should be power averaging for noise markers
v /= sweep_points;
v = to_dBm(v);
setting.unit = old_unit;
v = value(v);
}
if (markers[i].mtype & M_NOISE){
v = v - logf(actual_rbw_x10*100.0) * (10.0/logf(10.0))
#ifdef TINYSA4
+ ((float)SI4463_noise_correction_x10)/10.0 + (linear_averaging ? 0.0 : log_averaging_correction);
#endif
;
}
#ifdef __MARKER_CACHE__
marker_cache_valid[i] = true;
marker_cache_index[i] = markers[i].index;
marker_cache[i] = v;
#endif
return(v);
}
#ifdef TINYSA3
float sa_sqrtf(const float x)
{
union
{
int i;
float x;
} u;
u.x = x;
u.i = (1<<29) + (u.i >> 1) - (1<<22);
// Two Babylonian Steps (simplified from:)
// u.x = 0.5f * (u.x + x/u.x);
// u.x = 0.5f * (u.x + x/u.x);
u.x = u.x + x/u.x;
u.x = 0.25f*u.x + x/u.x;
return u.x;
}
#else
//#define sa_sqrtf(x) sqrtf(x)
__attribute__((always_inline)) __STATIC_INLINE float sa_sqrtf(float x){__asm__ ("vsqrt.f32 %0, %1" : "=t"(x) : "t"(x)); return x;}
#endif
// Function for convert to different type of values from dBm
// Replaced some equal functions and use recalculated constants:
// powf(10,x) = expf(x * logf(10))
// log10f(x) = logf(x)/logf(10)
float
value(const float v)
{
switch(setting.unit)
{
case U_DBMV:
return v + (30.0 + 20.0*log10f(sqrtf(50.0)));
case U_DBUV:
return v + (90.0 + 20.0*log10f(sqrtf(50.0)));
case U_VOLT:
// return powf(10.0, (v-30.0)/20.0) * sqrtf(50.0); // powf(10.0, v /20.0) * powf(10, -30.0/20.0) * sqrtf(50)
return expf(v*(logf(10.0)/20.0)) * (powf(10, -30.0/20.0)*sqrtf(50));// expf(v*logf(10.0)/20.0) * powf(10, -30.0/20.0) * sqrtf(50)
case U_VPP:
// return powf(10.0, (v-30.0)/20.0) * sqrtf(50.0); // powf(10.0, v /20.0) * powf(10, -30.0/20.0) * sqrtf(50)
return 2.828 * expf(v*(logf(10.0)/20.0)) * (powf(10, -30.0/20.0)*sqrtf(50));// expf(v*logf(10.0)/20.0) * powf(10, -30.0/20.0) * sqrtf(50)
case U_WATT:
// return powf(10.0, v/10.0)/1000.0; // powf(10.0, v /10.0) / 1000.0
return expf(v*(logf(10.0)/10.0)) / 1000.0; // expf(v*logf(10.0)/10.0) / 1000.0
}
// case U_DBM:
// case U_RAW:
return v; // raw data is in logmag*10 format
}
float
to_dBm(const float v)
{
switch(setting.unit)
{
case U_DBMV:
return v - (30.0 + 20.0*log10f(sqrtf(50.0)));
case U_DBUV:
return v - (90.0 + 20.0*log10f(sqrtf(50.0)));
case U_VOLT:
// return log10f(v/(sqrtf(50.0)))* 20.0 + 30.0;
return logf(v/(sqrtf(50.0)))*(20.0/logf(10.0)) + 30.0;
case U_VPP:
// return log10f(v/(sqrtf(50.0)))* 20.0 + 30.0;
return logf((v/2.828)/(sqrtf(50.0)))*(20.0/logf(10.0)) + 30.0;
case U_WATT:
// return log10f(v*1000.0)* 10.0;
return logf(v*1000.0)*(10.0/logf(10.0));
}
// case U_DBM:
return v; // raw data is in logmag*10 format
}
float
dBm_to_Watt(const float v)
{
return logf(v*1000.0)*(10.0/logf(10.0));
}
static float fast_expf(float x)
{
union { float f; int32_t i; } v;
v.i = (int32_t)(12102203.0f*x) + 0x3F800000;
int32_t m = (v.i >> 7) & 0xFFFF; // copy mantissa
#if 1
// cubic spline approximation
// empirical values for small maximum relative error (8.34e-5):
v.i += ((((((((1277*m) >> 14) + 14825)*m) >> 14) - 79749)*m) >> 11) - 626;
#else
// quartic spline approximation
// empirical values for small maximum relative error (1.21e-5):
v.i += (((((((((((3537*m) >> 16) + 13668)*m) >> 18) + 15817)*m) >> 14) - 80470)*m) >> 11);
#endif
return v.f;
}
static void
trace_into_index_x_array(index_x_t *x, uint16_t points){
// Not need update if index calculated for this points count
static uint16_t old_points = 0;
if (old_points == points) return;
old_points = points;
points-=1;
for (int i=0; i<= points;i++)
x[i] = (i * WIDTH + (points>>1)) / points + CELLOFFSETX;
}
//
// Optimized by speed/size array processing of value(const float v) function
// on screen need calculate as:
// y = (ref-v)/scale
// and align by top/bottom
static void
trace_into_index_y_array(index_y_t *y, float *array, int points)
{
float scale = GRIDY / get_trace_scale();
float ref = get_trace_refpos();
float mult = 0, vmult = 1.0;
float ref_shift = 0;
switch (setting.unit){
case U_DBM: break;
#ifdef TINYSA4
case U_RAW: break;
#endif
case U_DBMV: ref_shift = 30.0 + 20.0*log10f(sqrtf(50.0));break;
case U_DBUV: ref_shift = 90.0 + 20.0*log10f(sqrtf(50.0));break;
case U_VOLT: vmult = powf(10, -30.0/20.0) * sqrtf(50.0); mult = logf(10.0)/20.0;break;
case U_VPP: vmult = 2.828* powf(10, -30.0/20.0) * sqrtf(50.0); mult = logf(10.0)/20.0;break;
case U_WATT: vmult = 1.0/1000.0; mult = logf(10.0)/10.0;break;
default:
return;
}
// Universal formula look like this:
// v = (refpos - (mult ? expf(value*mult) : value) - ref_shift) * vmult) * scale;
// v = ((refpos - ref_shift) * scale) - (mult ? expf(value*mult) : value) * (vmult * scale)
// Made precalculated constants:
ref = (ref - ref_shift) * scale + 0.5; // add 0.5 for floor on int convert
scale = scale * vmult;
int max = NGRIDY * GRIDY, i;
for (i=0;i<points;i++){
float value = array[i];
if (mult) value = fast_expf(value*mult);
value = ref - value * scale;
int v = value;
if (v < 0) v = 0;
else if (v > max) v = max;
y[i] = v;
}
return;
}
static inline void
swap_markmap(void)
{
current_mappage^= 1;
}
static void
clear_markmap(void)
{
memset(markmap[current_mappage], 0, sizeof markmap[current_mappage]);
}
static void
force_set_markmap(void)
{
memset(markmap[current_mappage], 0xff, sizeof markmap[current_mappage]);
}
/*
* Force region of screen update
*/
static void
invalidate_rect_func(int x0, int y0, int x1, int y1)
{
int x, y;
map_t *map = &markmap[current_mappage][0];
for (y = y0; y <= y1; y++)
if ((uint32_t)y < MAX_MARKMAP_Y)
for (x = x0; x <= x1; x++)
map[y]|= 1 << x;
}
#define invalidate_rect(x0, y0, x1, y1) invalidate_rect_func((x0)/CELLWIDTH, (y0)/CELLHEIGHT, (x1)/CELLWIDTH, (y1)/CELLHEIGHT)
#define SWAP(x,y) {int t=x;x=y;y=t;}
static void
mark_cells_from_index(void)
{
int t, i, j;
/* mark cells between each neighber points */
map_t *map = &markmap[current_mappage][0];
index_x_t *index_x = trace_index_x;
for (t = 0; t < TRACES_MAX; t++) {
if (IS_TRACE_DISABLE(t))
continue;
index_y_t *index_y = trace_index_y[t];
int m0 = index_x[0] / CELLWIDTH;
int n0 = index_y[0] / CELLHEIGHT;
map[n0] |= 1 << m0;
for (i = 1; i < sweep_points; i++) {
int m1 = index_x[i] / CELLWIDTH;
int n1 = index_y[i] / CELLHEIGHT;
if (m0 == m1 && n0 == n1)
continue;
int x0 = m0; int x1 = m1; if (x0>x1) SWAP(x0, x1); m0 = m1;
int y0 = n0; int y1 = n1; if (y0>y1) SWAP(y0, y1); n0 = n1;
for (; y0 <= y1; y0++)
for (j = x0; j <= x1; j++)
map[y0] |= 1 << j;
}
}
}
static inline void
markmap_upperarea(void)
{
// Hardcoded, Text info from upper area
#if MARKER_COUNT == 4
invalidate_rect(0, 0, AREA_WIDTH_NORMAL, 31);
#else
invalidate_rect(0, 0, AREA_WIDTH_NORMAL, 63);
#endif
}
static uint16_t get_trigger_level(
#ifdef __BANDS__
int x
#else
void
#endif
){
index_y_t trigger;
#ifdef TINYSA4
if (setting.trigger_trace != 255)
setting.trigger_level = measured[setting.trigger_trace][x];
#endif
#ifdef __BANDS__
else if (!setting.draw_line && setting.multi_band && !setting.multi_trace) {
int b = getBand(x);
setting.trigger_level = setting.bands[b].level;
}
#endif
trace_into_index_y_array(&trigger, &setting.trigger_level, 1);
return trigger;
}
static inline void
markmap_trigger_area(void){
#ifdef __BANDS__
uint16_t tp = get_trigger_level(0);
#else
uint16_t tp = get_trigger_level();
#endif
markmap[current_mappage][tp/CELLWIDTH] = (map_t)0xFFFFFFFF;
}
//
// in most cases _compute_outcode clip calculation not give render line speedup
//
static inline void
cell_drawline(int x0, int y0, int x1, int y1, int c)
{
if (x0 < 0 && x1 < 0) return;
if (y0 < 0 && y1 < 0) return;
if (x0 >= CELLWIDTH && x1 >= CELLWIDTH) return;
if (y0 >= CELLHEIGHT && y1 >= CELLHEIGHT) return;
// modifed Bresenham's line algorithm, see https://en.wikipedia.org/wiki/Bresenham%27s_line_algorithm
// Draw from top to bottom (most graph contain vertical lines)
if (y1 < y0) { SWAP(x0, x1); SWAP(y0, y1); }
int dx =-(x1 - x0), sx = 1; if (dx > 0) { dx = -dx; sx = -sx; }
int dy = (y1 - y0);
int err = ((dy + dx) < 0 ? -dx : -dy) / 2;
// Fast skip points while y0 < 0
if (y0 < 0){
while(1){
int e2 = err;
if (e2 > dx) { err-= dy; x0+=sx;}
if (e2 < dy) { err-= dx; y0++; if (y0 == 0) break;}
}
}
// align y by CELLWIDTH for faster calculations
y0*=CELLWIDTH;
y1*=CELLWIDTH;
while (1) {
if ((uint32_t)x0 < CELLWIDTH)
cell_buffer[y0 + x0]|= c;
if (x0 == x1 && y0 == y1)
return;
int e2 = err;
if (e2 > dx) { err-= dy; x0+=sx;}
if (e2 < dy) { err-= dx; y0+=CELLWIDTH; if (y0>=CELLHEIGHT*CELLWIDTH) return;} // stop after cell bottom
}
}
// Give a little speedup then draw rectangular plot (50 systick on all calls, all render req 700 systick)
// Write more difficult algoritm for seach indexes not give speedup
static int
search_index_range_x(int x1, int x2, int *i0, int *i1)
{
int i, j;
int head = 0;
int tail = sweep_points;
int idx_x;
index_x_t *index_x = trace_index_x;
// Search index point in cell
while (1) {
i = (head + tail) / 2;
idx_x = index_x[i];
if (idx_x >= x2) { // index after cell
if (tail == i)
return false;
tail = i;
}
else if (idx_x < x1) { // index before cell
if (head == i)
return false;
head = i;
}
else // index in cell (x =< idx_x < cell_end)
break;
}
j = i;
// Search index left from point
do {
j--;
} while (j > 0 && x1 <= index_x[j]);
*i0 = j;
// Search index right from point
do {
i++;
} while (i < sweep_points-1 && index_x[i] < x2);
*i1 = i;
return TRUE;
}
#if 0 // Not used as refpos is always at top of screen
#define REFERENCE_WIDTH 6
#define REFERENCE_HEIGHT 5
#define REFERENCE_X_OFFSET 5
#define REFERENCE_Y_OFFSET 2
// Reference bitmap
static const uint8_t reference_bitmap[]={
_BMP8(0b11000000),
_BMP8(0b11110000),
_BMP8(0b11111100),
_BMP8(0b11110000),
_BMP8(0b11000000),
#endif
#if _MARKER_SIZE_ == 0
#define MARKER_WIDTH 7
#define MARKER_HEIGHT 10
#define X_MARKER_OFFSET 3
#define Y_MARKER_OFFSET 10
#define MARKER_BITMAP(i) (&marker_bitmap[(i)*MARKER_HEIGHT])
static const uint8_t marker_bitmap[]={
// Marker Back plate
_BMP8(0b11111110),
_BMP8(0b11111110),
_BMP8(0b11111110),
_BMP8(0b11111110),
_BMP8(0b11111110),
_BMP8(0b11111110),
_BMP8(0b11111110),
_BMP8(0b01111100),
_BMP8(0b00111000),
_BMP8(0b00010000),
// Marker 1
_BMP8(0b00000000),
_BMP8(0b00010000),
_BMP8(0b00110000),
_BMP8(0b00010000),
_BMP8(0b00010000),
_BMP8(0b00010000),
_BMP8(0b00111000),
_BMP8(0b00000000),
_BMP8(0b00000000),
_BMP8(0b00000000),
#if MARKERS_MAX >=2
// Marker 2
_BMP8(0b00000000),
_BMP8(0b00111000),
_BMP8(0b01000100),
_BMP8(0b00000100),
_BMP8(0b00111000),
_BMP8(0b01000000),
_BMP8(0b01111100),
_BMP8(0b00000000),
_BMP8(0b00000000),
_BMP8(0b00000000),
#endif
#if MARKERS_MAX >=3
// Marker 3
_BMP8(0b00000000),
_BMP8(0b00111000),
_BMP8(0b01000100),
_BMP8(0b00011000),
_BMP8(0b00000100),
_BMP8(0b01000100),
_BMP8(0b00111000),
_BMP8(0b00000000),
_BMP8(0b00000000),
_BMP8(0b00000000),
#endif
#if MARKERS_MAX >=4
// Marker 4
_BMP8(0b00000000),
_BMP8(0b00001000),
_BMP8(0b00011000),
_BMP8(0b00101000),
_BMP8(0b01001000),
_BMP8(0b01001000),
_BMP8(0b01111100),
_BMP8(0b00001000),
_BMP8(0b00000000),
_BMP8(0b00000000),
#endif
#if MARKERS_MAX >=5
// Marker 5
_BMP8(0b00000000),
_BMP8(0b01111100),
_BMP8(0b01000000),
_BMP8(0b01111000),
_BMP8(0b00000100),
_BMP8(0b01000100),
_BMP8(0b00111000),
_BMP8(0b00000000),
_BMP8(0b00000000),
_BMP8(0b00000000),
#endif
#if MARKERS_MAX >=6
// Marker 6
_BMP8(0b00000000),
_BMP8(0b00111100),
_BMP8(0b01000000),
_BMP8(0b01111000),
_BMP8(0b01000100),
_BMP8(0b01000100),
_BMP8(0b00111000),
_BMP8(0b00000000),
_BMP8(0b00000000),
_BMP8(0b00000000),
#endif
#if MARKERS_MAX >=7
// Marker 7
_BMP8(0b00000000),
_BMP8(0b01111100),
_BMP8(0b01000100),
_BMP8(0b00000100),
_BMP8(0b00001000),
_BMP8(0b00010000),
_BMP8(0b00010000),
_BMP8(0b00010000),
_BMP8(0b00000000),
_BMP8(0b00000000),
#endif
#if MARKERS_MAX >=8
// Marker 8
_BMP8(0b00000000),
_BMP8(0b00111000),
_BMP8(0b01000100),
_BMP8(0b00111000),
_BMP8(0b01000100),
_BMP8(0b01000100),
_BMP8(0b00111000),
_BMP8(0b00000000),
_BMP8(0b00000000),
_BMP8(0b00000000),
#endif
};
#elif _MARKER_SIZE_ == 1
#define MARKER_WIDTH 11
#define MARKER_HEIGHT 14
#define X_MARKER_OFFSET 5
#define Y_MARKER_OFFSET 14
#define MARKER_BITMAP(i) (&marker_bitmap[(i)*2*MARKER_HEIGHT])
static const uint8_t marker_bitmap[]={
// Marker Back plate
_BMP16(0b0000000000000000),
_BMP16(0b0111111111000000),
_BMP16(0b0111111111000000),
_BMP16(0b0111111111000000),
_BMP16(0b0111111111000000),
_BMP16(0b0111111111000000),
_BMP16(0b0111111111000000),
_BMP16(0b0111111111000000),
_BMP16(0b0111111111000000),
_BMP16(0b0111111111000000),
_BMP16(0b0011111110000000),
_BMP16(0b0001111100000000),
_BMP16(0b0000111000000000),
_BMP16(0b0000010000000000),
// Marker 1
_BMP16(0b1111111111100000),
_BMP16(0b1000000000100000),
_BMP16(0b1000011000100000),
_BMP16(0b1000111000100000),
_BMP16(0b1001011000100000),
_BMP16(0b1000011000100000),
_BMP16(0b1000011000100000),
_BMP16(0b1000011000100000),
_BMP16(0b1000011000100000),
_BMP16(0b1000011000100000),
_BMP16(0b0100111101000000),
_BMP16(0b0010000010000000),
_BMP16(0b0001000100000000),
_BMP16(0b0000101000000000),
#if MARKERS_MAX >=2
// Marker 2
_BMP16(0b1111111111100000),
_BMP16(0b1000000000100000),
_BMP16(0b1000111100100000),
_BMP16(0b1001100110100000),
_BMP16(0b1001100110100000),
_BMP16(0b1000000110100000),
_BMP16(0b1000001100100000),
_BMP16(0b1000111000100000),
_BMP16(0b1001100000100000),
_BMP16(0b1001100000100000),
_BMP16(0b0101111101000000),
_BMP16(0b0010000010000000),
_BMP16(0b0001000100000000),
_BMP16(0b0000101000000000),
#endif
#if MARKERS_MAX >=3
// Marker 3
_BMP16(0b1111111111100000),
_BMP16(0b1000000000100000),
_BMP16(0b1001111100100000),
_BMP16(0b1011000110100000),
_BMP16(0b1011000110100000),
_BMP16(0b1000000110100000),
_BMP16(0b1000011100100000),
_BMP16(0b1000000110100000),
_BMP16(0b1011000110100000),
_BMP16(0b1011000110100000),
_BMP16(0b0101111101000000),
_BMP16(0b0010000010000000),
_BMP16(0b0001000100000000),
_BMP16(0b0000101000000000),
#endif
#if MARKERS_MAX >=4
// Marker 4
_BMP16(0b1111111111100000),
_BMP16(0b1000000000100000),
_BMP16(0b1000001100100000),
_BMP16(0b1000011100100000),
_BMP16(0b1000111100100000),
_BMP16(0b1001101100100000),
_BMP16(0b1011001100100000),
_BMP16(0b1011001100100000),
_BMP16(0b1011111110100000),
_BMP16(0b1000001100100000),
_BMP16(0b0100001101000000),
_BMP16(0b0010000010000000),
_BMP16(0b0001000100000000),
_BMP16(0b0000101000000000),
#endif
#if MARKERS_MAX >=5
// Marker 5
_BMP16(0b1111111111100000),
_BMP16(0b1000000000100000),
_BMP16(0b1011111110100000),
_BMP16(0b1011000000100000),
_BMP16(0b1011000000100000),
_BMP16(0b1011111100100000),
_BMP16(0b1011000110100000),
_BMP16(0b1000000110100000),
_BMP16(0b1000000110100000),
_BMP16(0b1011000110100000),
_BMP16(0b0101111101000000),
_BMP16(0b0010000010000000),
_BMP16(0b0001000100000000),
_BMP16(0b0000101000000000),
#endif
#if MARKERS_MAX >=6
// Marker 6
_BMP16(0b1111111111100000),
_BMP16(0b1000000000100000),
_BMP16(0b1001111100100000),
_BMP16(0b1011000110100000),
_BMP16(0b1011000000100000),
_BMP16(0b1011011100100000),
_BMP16(0b1011100110100000),
_BMP16(0b1011000110100000),
_BMP16(0b1011000110100000),
_BMP16(0b1011000110100000),
_BMP16(0b0101111101000000),
_BMP16(0b0010000010000000),
_BMP16(0b0001000100000000),
_BMP16(0b0000101000000000),
#endif
#if MARKERS_MAX >=7
// Marker 7
_BMP16(0b1111111111100000),
_BMP16(0b1000000000100000),
_BMP16(0b1011111110100000),
_BMP16(0b1011000110100000),
_BMP16(0b1000000110100000),
_BMP16(0b1000001100100000),
_BMP16(0b1000011000100000),
_BMP16(0b1000110000100000),
_BMP16(0b1000110000100000),
_BMP16(0b1000110000100000),
_BMP16(0b0100110001000000),
_BMP16(0b0010000010000000),
_BMP16(0b0001000100000000),
_BMP16(0b0000101000000000),
#endif
#if MARKERS_MAX >=8
// Marker 8
_BMP16(0b1111111111100000),
_BMP16(0b1000000000100000),
_BMP16(0b1001111100100000),
_BMP16(0b1011000110100000),
_BMP16(0b1011000110100000),
_BMP16(0b1001111100100000),
_BMP16(0b1011000110100000),
_BMP16(0b1011000110100000),
_BMP16(0b1011000110100000),
_BMP16(0b1011000110100000),
_BMP16(0b0101111101000000),
_BMP16(0b0010000010000000),
_BMP16(0b0001000100000000),
_BMP16(0b0000101000000000),
#endif
};
#endif
static void
markmap_marker(int marker)
{
static index_x_t prev_index_x[MARKERS_MAX];
static index_y_t prev_index_y[MARKERS_MAX];
if (!markers[marker].enabled)