-
Notifications
You must be signed in to change notification settings - Fork 0
/
LCD.c
1563 lines (1440 loc) · 58.5 KB
/
LCD.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
#include <stdint.h>
#include "LCD.h"
#include "tm4c123gh6pm.h"
#include <string.h>
#include <stdio.h>
void DisableInterrupts(void); // Disable interrupts
void EnableInterrupts(void); // Enable interrupts
long StartCritical (void); // previous I bit, disable interrupts
void EndCritical(long sr); // restore I bit to previous value
void WaitForInterrupt(void); // low power mode
// This section is based on ST7735.c, which itself is based
// on example code originally from Adafruit. Some sections
// such as the font table and initialization functions were
// copied verbatim from Adafruit's example and are subject
// to the following disclosure.
/***************************************************
This is a library for the Adafruit 1.8" SPI display.
This library works with the Adafruit 1.8" TFT Breakout w/SD card
----> http://www.adafruit.com/products/358
as well as Adafruit raw 1.8" TFT displayun
----> http://www.adafruit.com/products/618
Check out the links above for our tutorials and wiring diagrams
These displays use SPI to communicate, 4 or 5 pins are required to
interface (RST is optional)
Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing
products from Adafruit!
Written by Limor Fried/Ladyada for Adafruit Industries.
MIT license, all text above must be included in any redistribution
****************************************************/
// some flags for ST7735_InitR()
enum initRFlags{
none,
INITR_GREENTAB,
INITR_REDTAB,
INITR_BLACKTAB
};
#define ST7735_TFTWIDTH 128
#define ST7735_TFTHEIGHT 128
// Color definitions
#define ST7735_BLACK 0x0000
#define ST7735_BLUE 0x001F
#define ST7735_RED 0xF800
#define ST7735_GREEN 0x07E0
#define ST7735_CYAN 0x07FF
#define ST7735_MAGENTA 0xF81F
#define ST7735_YELLOW 0xFFE0
#define ST7735_WHITE 0xFFFF
// 12 rows (0 to 11) and 21 characters (0 to 20)
// Requires (11 + size*size*6*8) bytes of transmission for each character
uint32_t StX=0; // position along the horizonal axis 0 to 20
uint32_t StY=0; // position along the vertical axis 0 to 11
uint16_t StTextColor = ST7735_YELLOW;
#define ST7735_NOP 0x00
#define ST7735_SWRESET 0x01
#define ST7735_RDDID 0x04
#define ST7735_RDDST 0x09
#define ST7735_SLPIN 0x10
#define ST7735_SLPOUT 0x11
#define ST7735_PTLON 0x12
#define ST7735_NORON 0x13
#define ST7735_INVOFF 0x20
#define ST7735_INVON 0x21
#define ST7735_DISPOFF 0x28
#define ST7735_DISPON 0x29
#define ST7735_CASET 0x2A
#define ST7735_RASET 0x2B
#define ST7735_RAMWR 0x2C
#define ST7735_RAMRD 0x2E
#define ST7735_PTLAR 0x30
#define ST7735_COLMOD 0x3A
#define ST7735_MADCTL 0x36
#define ST7735_FRMCTR1 0xB1
#define ST7735_FRMCTR2 0xB2
#define ST7735_FRMCTR3 0xB3
#define ST7735_INVCTR 0xB4
#define ST7735_DISSET5 0xB6
#define ST7735_PWCTR1 0xC0
#define ST7735_PWCTR2 0xC1
#define ST7735_PWCTR3 0xC2
#define ST7735_PWCTR4 0xC3
#define ST7735_PWCTR5 0xC4
#define ST7735_VMCTR1 0xC5
#define ST7735_RDID1 0xDA
#define ST7735_RDID2 0xDB
#define ST7735_RDID3 0xDC
#define ST7735_RDID4 0xDD
#define ST7735_PWCTR6 0xFC
#define ST7735_GMCTRP1 0xE0
#define ST7735_GMCTRN1 0xE1
#define TFT_CS (*((volatile uint32_t *)0x40004040)) /* PA4 */
#define TFT_CS_LOW 0x00
#define TFT_CS_HIGH 0x10
#define DC (*((volatile uint32_t *)0x40025040)) /* PF4 */
#define DC_COMMAND 0x00
#define DC_DATA 0x10
#define RESET (*((volatile uint32_t *)0x40025004)) /* PF0 */
#define RESET_LOW 0x00
#define RESET_HIGH 0x01
// standard ascii 5x7 font
// originally from glcdfont.c from Adafruit project
static const uint8_t Font[] = {
0x00, 0x00, 0x00, 0x00, 0x00,
0x3E, 0x5B, 0x4F, 0x5B, 0x3E,
0x3E, 0x6B, 0x4F, 0x6B, 0x3E,
0x1C, 0x3E, 0x7C, 0x3E, 0x1C,
0x18, 0x3C, 0x7E, 0x3C, 0x18,
0x1C, 0x57, 0x7D, 0x57, 0x1C,
0x1C, 0x5E, 0x7F, 0x5E, 0x1C,
0x00, 0x18, 0x3C, 0x18, 0x00,
0xFF, 0xE7, 0xC3, 0xE7, 0xFF,
0x00, 0x18, 0x24, 0x18, 0x00,
0xFF, 0xE7, 0xDB, 0xE7, 0xFF,
0x30, 0x48, 0x3A, 0x06, 0x0E,
0x26, 0x29, 0x79, 0x29, 0x26,
0x40, 0x7F, 0x05, 0x05, 0x07,
0x40, 0x7F, 0x05, 0x25, 0x3F,
0x5A, 0x3C, 0xE7, 0x3C, 0x5A,
0x7F, 0x3E, 0x1C, 0x1C, 0x08,
0x08, 0x1C, 0x1C, 0x3E, 0x7F,
0x14, 0x22, 0x7F, 0x22, 0x14,
0x5F, 0x5F, 0x00, 0x5F, 0x5F,
0x06, 0x09, 0x7F, 0x01, 0x7F,
0x00, 0x66, 0x89, 0x95, 0x6A,
0x60, 0x60, 0x60, 0x60, 0x60,
0x94, 0xA2, 0xFF, 0xA2, 0x94,
0x08, 0x04, 0x7E, 0x04, 0x08,
0x10, 0x20, 0x7E, 0x20, 0x10,
0x08, 0x08, 0x2A, 0x1C, 0x08,
0x08, 0x1C, 0x2A, 0x08, 0x08,
0x1E, 0x10, 0x10, 0x10, 0x10,
0x0C, 0x1E, 0x0C, 0x1E, 0x0C,
0x30, 0x38, 0x3E, 0x38, 0x30,
0x06, 0x0E, 0x3E, 0x0E, 0x06,
0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x5F, 0x00, 0x00,
0x00, 0x07, 0x00, 0x07, 0x00,
0x14, 0x7F, 0x14, 0x7F, 0x14,
0x24, 0x2A, 0x7F, 0x2A, 0x12,
0x23, 0x13, 0x08, 0x64, 0x62,
0x36, 0x49, 0x56, 0x20, 0x50,
0x00, 0x08, 0x07, 0x03, 0x00,
0x00, 0x1C, 0x22, 0x41, 0x00,
0x00, 0x41, 0x22, 0x1C, 0x00,
0x2A, 0x1C, 0x7F, 0x1C, 0x2A,
0x08, 0x08, 0x3E, 0x08, 0x08,
0x00, 0x80, 0x70, 0x30, 0x00,
0x08, 0x08, 0x08, 0x08, 0x08,
0x00, 0x00, 0x60, 0x60, 0x00,
0x20, 0x10, 0x08, 0x04, 0x02,
0x3E, 0x51, 0x49, 0x45, 0x3E, // 0
0x00, 0x42, 0x7F, 0x40, 0x00, // 1
0x72, 0x49, 0x49, 0x49, 0x46, // 2
0x21, 0x41, 0x49, 0x4D, 0x33, // 3
0x18, 0x14, 0x12, 0x7F, 0x10, // 4
0x27, 0x45, 0x45, 0x45, 0x39, // 5
0x3C, 0x4A, 0x49, 0x49, 0x31, // 6
0x41, 0x21, 0x11, 0x09, 0x07, // 7
0x36, 0x49, 0x49, 0x49, 0x36, // 8
0x46, 0x49, 0x49, 0x29, 0x1E, // 9
0x00, 0x00, 0x14, 0x00, 0x00,
0x00, 0x40, 0x34, 0x00, 0x00,
0x00, 0x08, 0x14, 0x22, 0x41,
0x14, 0x14, 0x14, 0x14, 0x14,
0x00, 0x41, 0x22, 0x14, 0x08,
0x02, 0x01, 0x59, 0x09, 0x06,
0x3E, 0x41, 0x5D, 0x59, 0x4E,
0x7C, 0x12, 0x11, 0x12, 0x7C, // A
0x7F, 0x49, 0x49, 0x49, 0x36, // B
0x3E, 0x41, 0x41, 0x41, 0x22, // C
0x7F, 0x41, 0x41, 0x41, 0x3E, // D
0x7F, 0x49, 0x49, 0x49, 0x41, // E
0x7F, 0x09, 0x09, 0x09, 0x01, // F
0x3E, 0x41, 0x41, 0x51, 0x73, // G
0x7F, 0x08, 0x08, 0x08, 0x7F, // H
0x00, 0x41, 0x7F, 0x41, 0x00, // I
0x20, 0x40, 0x41, 0x3F, 0x01, // J
0x7F, 0x08, 0x14, 0x22, 0x41, // K
0x7F, 0x40, 0x40, 0x40, 0x40, // L
0x7F, 0x02, 0x1C, 0x02, 0x7F, // M
0x7F, 0x04, 0x08, 0x10, 0x7F, // N
0x3E, 0x41, 0x41, 0x41, 0x3E, // O
0x7F, 0x09, 0x09, 0x09, 0x06, // P
0x3E, 0x41, 0x51, 0x21, 0x5E, // Q
0x7F, 0x09, 0x19, 0x29, 0x46, // R
0x26, 0x49, 0x49, 0x49, 0x32, // S
0x03, 0x01, 0x7F, 0x01, 0x03, // T
0x3F, 0x40, 0x40, 0x40, 0x3F, // U
0x1F, 0x20, 0x40, 0x20, 0x1F, // V
0x3F, 0x40, 0x38, 0x40, 0x3F, // W
0x63, 0x14, 0x08, 0x14, 0x63, // X
0x03, 0x04, 0x78, 0x04, 0x03, // Y
0x61, 0x59, 0x49, 0x4D, 0x43, // Z
0x00, 0x7F, 0x41, 0x41, 0x41,
0x02, 0x04, 0x08, 0x10, 0x20,
0x00, 0x41, 0x41, 0x41, 0x7F,
0x04, 0x02, 0x01, 0x02, 0x04,
0x40, 0x40, 0x40, 0x40, 0x40,
0x00, 0x03, 0x07, 0x08, 0x00,
0x20, 0x54, 0x54, 0x78, 0x40, // a
0x7F, 0x28, 0x44, 0x44, 0x38, // b
0x38, 0x44, 0x44, 0x44, 0x28, // c
0x38, 0x44, 0x44, 0x28, 0x7F, // d
0x38, 0x54, 0x54, 0x54, 0x18, // e
0x00, 0x08, 0x7E, 0x09, 0x02, // f
0x18, 0xA4, 0xA4, 0x9C, 0x78, // g
0x7F, 0x08, 0x04, 0x04, 0x78, // h
0x00, 0x44, 0x7D, 0x40, 0x00, // i
0x20, 0x40, 0x40, 0x3D, 0x00, // j
0x7F, 0x10, 0x28, 0x44, 0x00, // k
0x00, 0x41, 0x7F, 0x40, 0x00, // l
0x7C, 0x04, 0x78, 0x04, 0x78, // m
0x7C, 0x08, 0x04, 0x04, 0x78, // n
0x38, 0x44, 0x44, 0x44, 0x38, // o
0xFC, 0x18, 0x24, 0x24, 0x18, // p
0x18, 0x24, 0x24, 0x18, 0xFC, // q
0x7C, 0x08, 0x04, 0x04, 0x08, // r
0x48, 0x54, 0x54, 0x54, 0x24, // s
0x04, 0x04, 0x3F, 0x44, 0x24, // t
0x3C, 0x40, 0x40, 0x20, 0x7C, // u
0x1C, 0x20, 0x40, 0x20, 0x1C, // v
0x3C, 0x40, 0x30, 0x40, 0x3C, // w
0x44, 0x28, 0x10, 0x28, 0x44, // x
0x4C, 0x90, 0x90, 0x90, 0x7C, // y
0x44, 0x64, 0x54, 0x4C, 0x44, // z
0x00, 0x08, 0x36, 0x41, 0x00,
0x00, 0x00, 0x77, 0x00, 0x00,
0x00, 0x41, 0x36, 0x08, 0x00,
0x02, 0x01, 0x02, 0x04, 0x02,
0x3C, 0x26, 0x23, 0x26, 0x3C,
0x1E, 0xA1, 0xA1, 0x61, 0x12,
0x3A, 0x40, 0x40, 0x20, 0x7A,
0x38, 0x54, 0x54, 0x55, 0x59,
0x21, 0x55, 0x55, 0x79, 0x41,
0x21, 0x54, 0x54, 0x78, 0x41,
0x21, 0x55, 0x54, 0x78, 0x40,
0x20, 0x54, 0x55, 0x79, 0x40,
0x0C, 0x1E, 0x52, 0x72, 0x12,
0x39, 0x55, 0x55, 0x55, 0x59,
0x39, 0x54, 0x54, 0x54, 0x59,
0x39, 0x55, 0x54, 0x54, 0x58,
0x00, 0x00, 0x45, 0x7C, 0x41,
0x00, 0x02, 0x45, 0x7D, 0x42,
0x00, 0x01, 0x45, 0x7C, 0x40,
0xF0, 0x29, 0x24, 0x29, 0xF0,
0xF0, 0x28, 0x25, 0x28, 0xF0,
0x7C, 0x54, 0x55, 0x45, 0x00,
0x20, 0x54, 0x54, 0x7C, 0x54,
0x7C, 0x0A, 0x09, 0x7F, 0x49,
0x32, 0x49, 0x49, 0x49, 0x32,
0x32, 0x48, 0x48, 0x48, 0x32,
0x32, 0x4A, 0x48, 0x48, 0x30,
0x3A, 0x41, 0x41, 0x21, 0x7A,
0x3A, 0x42, 0x40, 0x20, 0x78,
0x00, 0x9D, 0xA0, 0xA0, 0x7D,
0x39, 0x44, 0x44, 0x44, 0x39,
0x3D, 0x40, 0x40, 0x40, 0x3D,
0x3C, 0x24, 0xFF, 0x24, 0x24,
0x48, 0x7E, 0x49, 0x43, 0x66,
0x2B, 0x2F, 0xFC, 0x2F, 0x2B,
0xFF, 0x09, 0x29, 0xF6, 0x20,
0xC0, 0x88, 0x7E, 0x09, 0x03,
0x20, 0x54, 0x54, 0x79, 0x41,
0x00, 0x00, 0x44, 0x7D, 0x41,
0x30, 0x48, 0x48, 0x4A, 0x32,
0x38, 0x40, 0x40, 0x22, 0x7A,
0x00, 0x7A, 0x0A, 0x0A, 0x72,
0x7D, 0x0D, 0x19, 0x31, 0x7D,
0x26, 0x29, 0x29, 0x2F, 0x28,
0x26, 0x29, 0x29, 0x29, 0x26,
0x30, 0x48, 0x4D, 0x40, 0x20,
0x38, 0x08, 0x08, 0x08, 0x08,
0x08, 0x08, 0x08, 0x08, 0x38,
0x2F, 0x10, 0xC8, 0xAC, 0xBA,
0x2F, 0x10, 0x28, 0x34, 0xFA,
0x00, 0x00, 0x7B, 0x00, 0x00,
0x08, 0x14, 0x2A, 0x14, 0x22,
0x22, 0x14, 0x2A, 0x14, 0x08,
0xAA, 0x00, 0x55, 0x00, 0xAA,
0xAA, 0x55, 0xAA, 0x55, 0xAA,
0x00, 0x00, 0x00, 0xFF, 0x00,
0x10, 0x10, 0x10, 0xFF, 0x00,
0x14, 0x14, 0x14, 0xFF, 0x00,
0x10, 0x10, 0xFF, 0x00, 0xFF,
0x10, 0x10, 0xF0, 0x10, 0xF0,
0x14, 0x14, 0x14, 0xFC, 0x00,
0x14, 0x14, 0xF7, 0x00, 0xFF,
0x00, 0x00, 0xFF, 0x00, 0xFF,
0x14, 0x14, 0xF4, 0x04, 0xFC,
0x14, 0x14, 0x17, 0x10, 0x1F,
0x10, 0x10, 0x1F, 0x10, 0x1F,
0x14, 0x14, 0x14, 0x1F, 0x00,
0x10, 0x10, 0x10, 0xF0, 0x00,
0x00, 0x00, 0x00, 0x1F, 0x10,
0x10, 0x10, 0x10, 0x1F, 0x10,
0x10, 0x10, 0x10, 0xF0, 0x10,
0x00, 0x00, 0x00, 0xFF, 0x10,
0x10, 0x10, 0x10, 0x10, 0x10,
0x10, 0x10, 0x10, 0xFF, 0x10,
0x00, 0x00, 0x00, 0xFF, 0x14,
0x00, 0x00, 0xFF, 0x00, 0xFF,
0x00, 0x00, 0x1F, 0x10, 0x17,
0x00, 0x00, 0xFC, 0x04, 0xF4,
0x14, 0x14, 0x17, 0x10, 0x17,
0x14, 0x14, 0xF4, 0x04, 0xF4,
0x00, 0x00, 0xFF, 0x00, 0xF7,
0x14, 0x14, 0x14, 0x14, 0x14,
0x14, 0x14, 0xF7, 0x00, 0xF7,
0x14, 0x14, 0x14, 0x17, 0x14,
0x10, 0x10, 0x1F, 0x10, 0x1F,
0x14, 0x14, 0x14, 0xF4, 0x14,
0x10, 0x10, 0xF0, 0x10, 0xF0,
0x00, 0x00, 0x1F, 0x10, 0x1F,
0x00, 0x00, 0x00, 0x1F, 0x14,
0x00, 0x00, 0x00, 0xFC, 0x14,
0x00, 0x00, 0xF0, 0x10, 0xF0,
0x10, 0x10, 0xFF, 0x10, 0xFF,
0x14, 0x14, 0x14, 0xFF, 0x14,
0x10, 0x10, 0x10, 0x1F, 0x00,
0x00, 0x00, 0x00, 0xF0, 0x10,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xF0, 0xF0, 0xF0, 0xF0, 0xF0,
0xFF, 0xFF, 0xFF, 0x00, 0x00,
0x00, 0x00, 0x00, 0xFF, 0xFF,
0x0F, 0x0F, 0x0F, 0x0F, 0x0F,
0x38, 0x44, 0x44, 0x38, 0x44,
0x7C, 0x2A, 0x2A, 0x3E, 0x14,
0x7E, 0x02, 0x02, 0x06, 0x06,
0x02, 0x7E, 0x02, 0x7E, 0x02,
0x63, 0x55, 0x49, 0x41, 0x63,
0x38, 0x44, 0x44, 0x3C, 0x04,
0x40, 0x7E, 0x20, 0x1E, 0x20,
0x06, 0x02, 0x7E, 0x02, 0x02,
0x99, 0xA5, 0xE7, 0xA5, 0x99,
0x1C, 0x2A, 0x49, 0x2A, 0x1C,
0x4C, 0x72, 0x01, 0x72, 0x4C,
0x30, 0x4A, 0x4D, 0x4D, 0x30,
0x30, 0x48, 0x78, 0x48, 0x30,
0xBC, 0x62, 0x5A, 0x46, 0x3D,
0x3E, 0x49, 0x49, 0x49, 0x00,
0x7E, 0x01, 0x01, 0x01, 0x7E,
0x2A, 0x2A, 0x2A, 0x2A, 0x2A,
0x44, 0x44, 0x5F, 0x44, 0x44,
0x40, 0x51, 0x4A, 0x44, 0x40,
0x40, 0x44, 0x4A, 0x51, 0x40,
0x00, 0x00, 0xFF, 0x01, 0x03,
0xE0, 0x80, 0xFF, 0x00, 0x00,
0x08, 0x08, 0x6B, 0x6B, 0x08,
0x36, 0x12, 0x36, 0x24, 0x36,
0x06, 0x0F, 0x09, 0x0F, 0x06,
0x00, 0x00, 0x18, 0x18, 0x00,
0x00, 0x00, 0x10, 0x10, 0x00,
0x30, 0x40, 0xFF, 0x01, 0x01,
0x00, 0x1F, 0x01, 0x01, 0x1E,
0x00, 0x19, 0x1D, 0x17, 0x12,
0x00, 0x3C, 0x3C, 0x3C, 0x3C,
0x00, 0x00, 0x00, 0x00, 0x00,
};
static uint8_t ColStart, RowStart; // some displays need this changed
//static uint8_t Rotation; // 0 to 3
//static enum initRFlags TabColor;
static int16_t _width = ST7735_TFTWIDTH; // this could probably be a constant, except it is used in Adafruit_GFX and depends on image rotation
static int16_t _height = ST7735_TFTHEIGHT;
// The Data/Command pin must be valid when the eighth bit is
// sent. The SSI module has hardware input and output FIFOs
// that are 8 locations deep; however, they are not used in
// this implementation. Each function first stalls while
// waiting for any pending SSI2 transfers to complete. Once
// the SSI2 module is idle, it then prepares the Chip Select
// pin for the LCD and the Data/Command pin. Next it starts
// transmitting the data or command. Finally once the
// hardware is idle again, it sets the chip select pin high
// as required by the serial protocol. This is a
// significant change from previous implementations of this
// function. It is less efficient without the FIFOs, but it
// should ensure that the Chip Select and Data/Command pin
// statuses all match the byte that is actually being
// transmitted.
// NOTE: These functions will crash or stall indefinitely if
// the SSI2 module is not initialized and enabled.
// This is a helper function that sends an 8-bit command to the LCD.
// Inputs: c 8-bit code to transmit
// Outputs: 8-bit reply
// Assumes: SSI2 and ports have already been initialized and enabled
uint8_t static writecommand(uint8_t c) {
// wait until SSI2 not busy/transmit FIFO empty
while((SSI2_SR_R&SSI_SR_BSY)==SSI_SR_BSY){};
TFT_CS = TFT_CS_LOW;
DC = DC_COMMAND;
SSI2_DR_R = c; // data out
while((SSI2_SR_R&SSI_SR_RNE)==0){}; // wait until response
TFT_CS = TFT_CS_HIGH;
return (uint8_t)SSI2_DR_R; // return the response
}
// This is a helper function that sends a piece of 8-bit data to the LCD.
// Inputs: c 8-bit data to transmit
// Outputs: 8-bit reply
// Assumes: SSI2 and ports have already been initialized and enabled
uint8_t static writedata(uint8_t c) {
// wait until SSI2 not busy/transmit FIFO empty
while((SSI2_SR_R&SSI_SR_BSY)==SSI_SR_BSY){};
TFT_CS = TFT_CS_LOW;
DC = DC_DATA;
SSI2_DR_R = c; // data out
while((SSI2_SR_R&SSI_SR_RNE)==0){}; // wait until response
TFT_CS = TFT_CS_HIGH;
return (uint8_t)SSI2_DR_R; // return the response
}
// delay function from sysctl.c
// which delays 3.3*ulCount cycles
// ulCount=23746 => 1ms = 23746*3.3cycle/loop/80,000
#ifdef __TI_COMPILER_VERSION__
//Code Composer Studio Code
void parrotdelay(uint32_t ulCount){
__asm ( " subs r0, #1\n"
" bne Delay\n"
" bx lr\n");
}
#else
//Keil uVision Code
__asm void
parrotdelay(uint32_t ulCount)
{
subs r0, #1
bne parrotdelay
bx lr
}
#endif
// Rather than a bazillion writecommand() and writedata() calls, screen
// initialization commands and arguments are organized in these tables
// stored in ROM. The table may look bulky, but that's mostly the
// formatting -- storage-wise this is hundreds of bytes more compact
// than the equivalent code. Companion function follows.
#define DELAY 0x80
//static const uint8_t
// Bcmd[] = { // Initialization commands for 7735B screens
// 18, // 18 commands in list:
// ST7735_SWRESET, DELAY, // 1: Software reset, no args, w/delay
// 50, // 50 ms delay
// ST7735_SLPOUT , DELAY, // 2: Out of sleep mode, no args, w/delay
// 255, // 255 = 500 ms delay
// ST7735_COLMOD , 1+DELAY, // 3: Set color mode, 1 arg + delay:
// 0x05, // 16-bit color
// 10, // 10 ms delay
// ST7735_FRMCTR1, 3+DELAY, // 4: Frame rate control, 3 args + delay:
// 0x00, // fastest refresh
// 0x06, // 6 lines front porch
// 0x03, // 3 lines back porch
// 10, // 10 ms delay
// ST7735_MADCTL , 1 , // 5: Memory access ctrl (directions), 1 arg:
// 0x08, // Row addr/col addr, bottom to top refresh
// ST7735_DISSET5, 2 , // 6: Display settings #5, 2 args, no delay:
// 0x15, // 1 clk cycle nonoverlap, 2 cycle gate
// // rise, 3 cycle osc equalize
// 0x02, // Fix on VTL
// ST7735_INVCTR , 1 , // 7: Display inversion control, 1 arg:
// 0x0, // Line inversion
// ST7735_PWCTR1 , 2+DELAY, // 8: Power control, 2 args + delay:
// 0x02, // GVDD = 4.7V
// 0x70, // 1.0uA
// 10, // 10 ms delay
// ST7735_PWCTR2 , 1 , // 9: Power control, 1 arg, no delay:
// 0x05, // VGH = 14.7V, VGL = -7.35V
// ST7735_PWCTR3 , 2 , // 10: Power control, 2 args, no delay:
// 0x01, // Opamp current small
// 0x02, // Boost frequency
// ST7735_VMCTR1 , 2+DELAY, // 11: Power control, 2 args + delay:
// 0x3C, // VCOMH = 4V
// 0x38, // VCOML = -1.1V
// 10, // 10 ms delay
// ST7735_PWCTR6 , 2 , // 12: Power control, 2 args, no delay:
// 0x11, 0x15,
// ST7735_GMCTRP1,16 , // 13: Magical unicorn dust, 16 args, no delay:
// 0x09, 0x16, 0x09, 0x20, // (seriously though, not sure what
// 0x21, 0x1B, 0x13, 0x19, // these config values represent)
// 0x17, 0x15, 0x1E, 0x2B,
// 0x04, 0x05, 0x02, 0x0E,
// ST7735_GMCTRN1,16+DELAY, // 14: Sparkles and rainbows, 16 args + delay:
// 0x0B, 0x14, 0x08, 0x1E, // (ditto)
// 0x22, 0x1D, 0x18, 0x1E,
// 0x1B, 0x1A, 0x24, 0x2B,
// 0x06, 0x06, 0x02, 0x0F,
// 10, // 10 ms delay
// ST7735_CASET , 4 , // 15: Column addr set, 4 args, no delay:
// 0x00, 0x02, // XSTART = 2
// 0x00, 0x81, // XEND = 129
// ST7735_RASET , 4 , // 16: Row addr set, 4 args, no delay:
// 0x00, 0x02, // XSTART = 1
// 0x00, 0x81, // XEND = 160
// ST7735_NORON , DELAY, // 17: Normal display on, no args, w/delay
// 10, // 10 ms delay
// ST7735_DISPON , DELAY, // 18: Main screen turn on, no args, w/delay
// 255 }; // 255 = 500 ms delay
static const uint8_t
Rcmd1[] = { // Init for 7735R, part 1 (red or green tab)
15, // 15 commands in list:
ST7735_SWRESET, DELAY, // 1: Software reset, 0 args, w/delay
150, // 150 ms delay
ST7735_SLPOUT , DELAY, // 2: Out of sleep mode, 0 args, w/delay
255, // 500 ms delay
ST7735_FRMCTR1, 3 , // 3: Frame rate ctrl - normal mode, 3 args:
0x01, 0x2C, 0x2D, // Rate = fosc/(1x2+40) * (LINE+2C+2D)
ST7735_FRMCTR2, 3 , // 4: Frame rate control - idle mode, 3 args:
0x01, 0x2C, 0x2D, // Rate = fosc/(1x2+40) * (LINE+2C+2D)
ST7735_FRMCTR3, 6 , // 5: Frame rate ctrl - partial mode, 6 args:
0x01, 0x2C, 0x2D, // Dot inversion mode
0x01, 0x2C, 0x2D, // Line inversion mode
ST7735_INVCTR , 1 , // 6: Display inversion ctrl, 1 arg, no delay:
0x07, // No inversion
ST7735_PWCTR1 , 3 , // 7: Power control, 3 args, no delay:
0xA2,
0x02, // -4.6V
0x84, // AUTO mode
ST7735_PWCTR2 , 1 , // 8: Power control, 1 arg, no delay:
0xC5, // VGH25 = 2.4C VGSEL = -10 VGH = 3 * AVDD
ST7735_PWCTR3 , 2 , // 9: Power control, 2 args, no delay:
0x0A, // Opamp current small
0x00, // Boost frequency
ST7735_PWCTR4 , 2 , // 10: Power control, 2 args, no delay:
0x8A, // BCLK/2, Opamp current small & Medium low
0x2A,
ST7735_PWCTR5 , 2 , // 11: Power control, 2 args, no delay:
0x8A, 0xEE,
ST7735_VMCTR1 , 1 , // 12: Power control, 1 arg, no delay:
0x0E,
ST7735_INVOFF , 0 , // 13: Don't invert display, no args, no delay
ST7735_MADCTL , 1 , // 14: Memory access control (directions), 1 arg:
0xC8, // row addr/col addr, bottom to top refresh
ST7735_COLMOD , 1 , // 15: set color mode, 1 arg, no delay:
0x05 }; // 16-bit color
static const uint8_t
Rcmd2green[] = { // Init for 7735R, part 2 (green tab only)
2, // 2 commands in list:
ST7735_CASET , 4 , // 1: Column addr set, 4 args, no delay:
0x00, 0x02, // XSTART = 0
0x00, 0x7F+0x02, // XEND = 127
ST7735_RASET , 4 , // 2: Row addr set, 4 args, no delay:
0x00, 0x01, // XSTART = 0
0x00, 0x7F+0x01 }; // XEND = 127
static const uint8_t
Rcmd2red[] = { // Init for 7735R, part 2 (red tab only)
2, // 2 commands in list:
ST7735_CASET , 4 , // 1: Column addr set, 4 args, no delay:
0x00, 0x00, // XSTART = 0
0x00, 0x7F, // XEND = 127
ST7735_RASET , 4 , // 2: Row addr set, 4 args, no delay:
0x00, 0x00, // XSTART = 0
0x00, 0x7F }; // XEND = 127
static const uint8_t
Rcmd3[] = { // Init for 7735R, part 3 (red or green tab)
4, // 4 commands in list:
ST7735_GMCTRP1, 16 , // 1: Magical unicorn dust, 16 args, no delay:
0x02, 0x1c, 0x07, 0x12,
0x37, 0x32, 0x29, 0x2d,
0x29, 0x25, 0x2B, 0x39,
0x00, 0x01, 0x03, 0x10,
ST7735_GMCTRN1, 16 , // 2: Sparkles and rainbows, 16 args, no delay:
0x03, 0x1d, 0x07, 0x06,
0x2E, 0x2C, 0x29, 0x2D,
0x2E, 0x2E, 0x37, 0x3F,
0x00, 0x00, 0x02, 0x10,
ST7735_NORON , DELAY, // 3: Normal display on, no args, w/delay
10, // 10 ms delay
ST7735_DISPON , DELAY, // 4: Main screen turn on, no args w/delay
100 }; // 100 ms delay
// ------------BSP_Delay1ms------------
// Simple delay function which delays about n
// milliseconds.
// Inputs: n number of 1 msec to wait
// Outputs: none
void BSP_Delay1ms(uint32_t n){
while(n){
parrotdelay(23746); // 1 msec, tuned at 80 MHz, originally part of LCD module
n--;
}
}
// Companion code to the above tables. Reads and issues
// a series of LCD commands stored in ROM byte array.
void static commandList(const uint8_t *addr) {
uint8_t numCommands, numArgs;
uint16_t ms;
numCommands = *(addr++); // Number of commands to follow
while(numCommands--) { // For each command...
writecommand(*(addr++)); // Read, issue command
numArgs = *(addr++); // Number of args to follow
ms = numArgs & DELAY; // If hibit set, delay follows args
numArgs &= ~DELAY; // Mask out delay bit
while(numArgs--) { // For each argument...
writedata(*(addr++)); // Read, issue argument
}
if(ms) {
ms = *(addr++); // Read post-command delay time (ms)
if(ms == 255) ms = 500; // If 255, delay for 500 ms
BSP_Delay1ms(ms);
}
}
}
// Initialization code common to both 'B' and 'R' type displays
void static commonInit(const uint8_t *cmdList) {
ColStart = RowStart = 0; // May be overridden in init func
// toggle RST low to reset; CS low so it'll listen to us
// SSI2Fss is not available, so use GPIO on PA4
SYSCTL_RCGCGPIO_R |= 0x00000023; // 1) activate clock for Ports F, B, and A
while((SYSCTL_PRGPIO_R&0x23) != 0x23){};// allow time for clocks to stabilize
GPIO_PORTF_LOCK_R = 0x4C4F434B; // 2a) unlock GPIO Port F
GPIO_PORTF_CR_R = 0x1F; // allow changes to PF4-0
// 2b) no need to unlock PF4, PB7, PB4, or PA4
GPIO_PORTF_AMSEL_R &= ~0x11; // 3a) disable analog on PF4,0
GPIO_PORTB_AMSEL_R &= ~0x90; // 3b) disable analog on PB7,4
GPIO_PORTA_AMSEL_R &= ~0x10; // 3c) disable analog on PA4
// 4a) configure PF4,0 as GPIO
GPIO_PORTF_PCTL_R = (GPIO_PORTF_PCTL_R&0xFFF0FFF0)+0x00000000;
// 4b) configure PB7,4 as SSI
GPIO_PORTB_PCTL_R = (GPIO_PORTB_PCTL_R&0x0FF0FFFF)+0x20020000;
// 4c) configure PA4 as GPIO
GPIO_PORTA_PCTL_R = (GPIO_PORTA_PCTL_R&0xFFF0FFFF)+0x00000000;
GPIO_PORTF_DIR_R |= 0x11; // 5a) make PF4,0 output
GPIO_PORTA_DIR_R |= 0x10; // 5b) make PA4 output
GPIO_PORTF_AFSEL_R &= ~0x11; // 6a) disable alt funct on PF4,0
GPIO_PORTB_AFSEL_R |= 0x90; // 6b) enable alt funct on PB7,4
GPIO_PORTA_AFSEL_R &= ~0x10; // 6c) disable alt funct on PA4
GPIO_PORTF_DEN_R |= 0x11; // 7a) enable digital I/O on PF4,0
GPIO_PORTB_DEN_R |= 0x90; // 7b) enable digital I/O on PB7,4
GPIO_PORTA_DEN_R |= 0x10; // 7c) enable digital I/O on PA4
TFT_CS = TFT_CS_LOW;
RESET = RESET_HIGH;
BSP_Delay1ms(500);
RESET = RESET_LOW;
BSP_Delay1ms(500);
RESET = RESET_HIGH;
BSP_Delay1ms(500);
TFT_CS = TFT_CS_HIGH;
// initialize SSI2
// activate clock for SSI2
SYSCTL_RCGCSSI_R |= SYSCTL_RCGCSSI_R2;
// allow time for clock to stabilize
while((SYSCTL_PRSSI_R&SYSCTL_PRSSI_R2) == 0){};
SSI2_CR1_R &= ~SSI_CR1_SSE; // disable SSI
SSI2_CR1_R &= ~SSI_CR1_MS; // master mode
// configure for clock from source PIOSC for baud clock source
SSI2_CC_R = (SSI2_CC_R&~SSI_CC_CS_M)+SSI_CC_CS_PIOSC;
// clock divider for 4 MHz SSIClk (16 MHz PIOSC/4)
// PIOSC/(CPSDVSR*(1+SCR))
// 16/(4*(1+0)) = 4 MHz
SSI2_CPSR_R = (SSI2_CPSR_R&~SSI_CPSR_CPSDVSR_M)+4; // must be even number
SSI2_CR0_R &= ~(SSI_CR0_SCR_M | // SCR = 0 (4 Mbps data rate)
SSI_CR0_SPH | // SPH = 0
SSI_CR0_SPO); // SPO = 0
// FRF = Freescale format
SSI2_CR0_R = (SSI2_CR0_R&~SSI_CR0_FRF_M)+SSI_CR0_FRF_MOTO;
// DSS = 8-bit data
SSI2_CR0_R = (SSI2_CR0_R&~SSI_CR0_DSS_M)+SSI_CR0_DSS_8;
SSI2_CR1_R |= SSI_CR1_SSE; // enable SSI
if(cmdList) commandList(cmdList);
}
////------------ST7735_InitB------------
//// Initialization for ST7735B screens.
//// Input: none
//// Output: none
//void static ST7735_InitB(void) {
// commonInit(Bcmd);
// BSP_LCD_SetCursor(0,0);
// StTextColor = ST7735_YELLOW;
// BSP_LCD_FillScreen(0); // set screen to black
//}
//------------ST7735_InitR------------
// Initialization for ST7735R screens (green or red tabs).
// Input: option one of the enumerated options depending on tabs
// Output: none
void static ST7735_InitR(enum initRFlags option) {
commonInit(Rcmd1);
if(option == INITR_GREENTAB) {
commandList(Rcmd2green);
ColStart = 2;
RowStart = 3;
} else {
// colstart, rowstart left at default '0' values
commandList(Rcmd2red);
}
commandList(Rcmd3);
// if black, change MADCTL color filter
if (option == INITR_BLACKTAB) {
writecommand(ST7735_MADCTL);
writedata(0xC0);
}
// TabColor = option;
BSP_LCD_SetCursor(0,0);
StTextColor = ST7735_YELLOW;
BSP_LCD_FillScreen(0); // set screen to black
}
// ------------BSP_LCD_Init------------
// Initialize the SPI and GPIO, which correspond with
// BoosterPack pins J1.7 (SPI CLK), J2.13 (SPI CS), J2.15
// (SPI MOSI), J2.17 (LCD ~RST), and J4.31 (LCD DC).
// Input: none
// Output: none
void BSP_LCD_Init(void){
ST7735_InitR(INITR_GREENTAB);
}
// Set the region of the screen RAM to be modified
// Pixel colors are sent left to right, top to bottom
// (same as Font table is encoded; different from regular bitmap)
// Requires 11 bytes of transmission
void static setAddrWindow(uint8_t x0, uint8_t y0, uint8_t x1, uint8_t y1) {
writecommand(ST7735_CASET); // Column addr set
writedata(0x00);
writedata(x0+ColStart); // XSTART
writedata(0x00);
writedata(x1+ColStart); // XEND
writecommand(ST7735_RASET); // Row addr set
writedata(0x00);
writedata(y0+RowStart); // YSTART
writedata(0x00);
writedata(y1+RowStart); // YEND
writecommand(ST7735_RAMWR); // write to RAM
}
// Send two bytes of data, most significant byte first
// Requires 2 bytes of transmission
void static pushColor(uint16_t color) {
writedata((uint8_t)(color >> 8));
writedata((uint8_t)color);
}
//------------BSP_LCD_DrawPixel------------
// Color the pixel at the given coordinates with the given color.
// Requires 13 bytes of transmission
// Input: x horizontal position of the pixel, columns from the left edge
// must be less than 128
// 0 is on the left, 126 is near the right
// y vertical position of the pixel, rows from the top edge
// must be less than 128
// 126 is near the wires, 0 is the side opposite the wires
// color 16-bit color, which can be produced by BSP_LCD_Color565()
// Output: none
void BSP_LCD_DrawPixel(int16_t x, int16_t y, uint16_t color) {
if((x < 0) || (x >= _width) || (y < 0) || (y >= _height)) return;
// setAddrWindow(x,y,x+1,y+1); // original code, bug???
setAddrWindow(x,y,x,y);
pushColor(color);
}
//------------BSP_LCD_DrawFastVLine------------
// Draw a vertical line at the given coordinates with the given height and color.
// A vertical line is parallel to the longer side of the rectangular display
// Requires (11 + 2*h) bytes of transmission (assuming image fully on screen)
// Input: x horizontal position of the start of the line, columns from the left edge
// y vertical position of the start of the line, rows from the top edge
// h vertical height of the line
// color 16-bit color, which can be produced by BSP_LCD_Color565()
// Output: none
void BSP_LCD_DrawFastVLine(int16_t x, int16_t y, int16_t h, uint16_t color) {
uint8_t hi = color >> 8, lo = color;
// Rudimentary clipping
if((x >= _width) || (y >= _height)) return;
if((y+h-1) >= _height) h = _height-y;
setAddrWindow(x, y, x, y+h-1);
while (h--) {
writedata(hi);
writedata(lo);
}
}
//------------BSP_LCD_DrawFastHLine------------
// Draw a horizontal line at the given coordinates with the given width and color.
// A horizontal line is parallel to the shorter side of the rectangular display
// Requires (11 + 2*w) bytes of transmission (assuming image fully on screen)
// Input: x horizontal position of the start of the line, columns from the left edge
// y vertical position of the start of the line, rows from the top edge
// w horizontal width of the line
// color 16-bit color, which can be produced by BSP_LCD_Color565()
// Output: none
void BSP_LCD_DrawFastHLine(int16_t x, int16_t y, int16_t w, uint16_t color) {
uint8_t hi = color >> 8, lo = color;
// Rudimentary clipping
if((x >= _width) || (y >= _height)) return;
if((x+w-1) >= _width) w = _width-x;
setAddrWindow(x, y, x+w-1, y);
while (w--) {
writedata(hi);
writedata(lo);
}
}
//------------BSP_LCD_FillScreen------------
// Fill the screen with the given color.
// Requires 33,293 bytes of transmission
// Input: color 16-bit color, which can be produced by BSP_LCD_Color565()
// Output: none
void BSP_LCD_FillScreen(uint16_t color) {
BSP_LCD_FillRect(0, 0, _width, _height, color); // original
// screen is actually 129 by 129 pixels, x 0 to 128, y goes from 0 to 128
}
//------------BSP_LCD_FillRect------------
// Draw a filled rectangle at the given coordinates with the given width, height, and color.
// Requires (11 + 2*w*h) bytes of transmission (assuming image fully on screen)
// Input: x horizontal position of the top left corner of the rectangle, columns from the left edge
// y vertical position of the top left corner of the rectangle, rows from the top edge
// w horizontal width of the rectangle
// h vertical height of the rectangle
// color 16-bit color, which can be produced by BSP_LCD_Color565()
// Output: none
void BSP_LCD_FillRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color) {
uint8_t hi = color >> 8, lo = color;
// rudimentary clipping (drawChar w/big text requires this)
if((x >= _width) || (y >= _height)) return;
if((x + w - 1) >= _width) w = _width - x;
if((y + h - 1) >= _height) h = _height - y;
setAddrWindow(x, y, x+w-1, y+h-1);
for(y=h; y>0; y--) {
for(x=w; x>0; x--) {
writedata(hi);
writedata(lo);
}
}
}
//------------BSP_LCD_Color565------------
// Pass 8-bit (each) R,G,B and get back 16-bit packed color.
// Input: r red value
// g green value
// b blue value
// Output: 16-bit color
uint16_t BSP_LCD_Color565(uint8_t r, uint8_t g, uint8_t b) {
return ((r & 0xF8) << 8) | ((g & 0xFC) << 3) | (b >> 3);
}
//------------BSP_LCD_SwapColor------------
// Swaps the red and blue values of the given 16-bit packed color;
// green is unchanged.
// Input: x 16-bit color in format B, G, R
// Output: 16-bit color in format R, G, B
uint16_t BSP_LCD_SwapColor(uint16_t x) {
return (x << 11) | (x & 0x07E0) | (x >> 11);
}
//------------BSP_LCD_DrawBitmap------------
// Displays a 16-bit color BMP image. A bitmap file that is created
// by a PC image processing program has a header and may be padded
// with dummy columns so the data have four byte alignment. This
// function assumes that all of that has been stripped out, and the
// array image[] has one 16-bit halfword for each pixel to be
// displayed on the screen (encoded in reverse order, which is
// standard for bitmap files). An array can be created in this
// format from a 24-bit-per-pixel .bmp file using the associated
// converter program.
// (x,y) is the screen location of the lower left corner of BMP image
// Requires (11 + 2*w*h) bytes of transmission (assuming image fully on screen)
// Input: x horizontal position of the bottom left corner of the image, columns from the left edge
// y vertical position of the bottom left corner of the image, rows from the top edge
// image pointer to a 16-bit color BMP image
// w number of pixels wide
// h number of pixels tall
// Output: none
// Must be less than or equal to 128 pixels wide by 128 pixels high
void BSP_LCD_DrawBitmap(int16_t x, int16_t y, const uint16_t *image, int16_t w, int16_t h){
int16_t skipC = 0; // non-zero if columns need to be skipped due to clipping
int16_t originalWidth = w; // save this value; even if not all columns fit on the screen, the image is still this width in ROM
int i = w*(h - 1);
if((x >= _width) || ((y - h + 1) >= _height) || ((x + w) <= 0) || (y < 0)){
return; // image is totally off the screen, do nothing
}
if((w > _width) || (h > _height)){ // image is too wide for the screen, do nothing
//***This isn't necessarily a fatal error, but it makes the
//following logic much more complicated, since you can have
//an image that exceeds multiple boundaries and needs to be
//clipped on more than one side.
return;
}
if((x + w - 1) >= _width){ // image exceeds right of screen
skipC = (x + w) - _width; // skip cut off columns
w = _width - x;
}
if((y - h + 1) < 0){ // image exceeds top of screen
i = i - (h - y - 1)*originalWidth; // skip the last cut off rows
h = y + 1;
}
if(x < 0){ // image exceeds left of screen
w = w + x;
skipC = -1*x; // skip cut off columns
i = i - x; // skip the first cut off columns
x = 0;
}
if(y >= _height){ // image exceeds bottom of screen
h = h - (y - _height + 1);
y = _height - 1;
}
setAddrWindow(x, y-h+1, x+w-1, y);
for(y=0; y<h; y=y+1){
for(x=0; x<w; x=x+1){
// send the top 8 bits
writedata((uint8_t)(image[i] >> 8));
// send the bottom 8 bits
writedata((uint8_t)image[i]);
i = i + 1; // go to the next pixel
}
i = i + skipC;
i = i - 2*originalWidth;
}
}
//------------BSP_LCD_DrawCharS------------
// Simple character draw function. This is the same function from
// Adafruit_GFX.c but adapted for this processor. However, each call
// to BSP_LCD_DrawPixel() calls setAddrWindow(), which needs to send
// many extra data and commands. If the background color is the same
// as the text color, no background will be printed, and text can be
// drawn right over existing images without covering them with a box.
// Requires (11 + 2*size*size)*6*8 bytes of transmission (image fully on screen; textcolor != bgColor)
// Input: x horizontal position of the top left corner of the character, columns from the left edge
// y vertical position of the top left corner of the character, rows from the top edge
// c character to be printed
// textColor 16-bit color of the character
// bgColor 16-bit color of the background
// size number of pixels per character pixel (e.g. size==2 prints each pixel of font as 2x2 square)
// Output: none
void BSP_LCD_DrawCharS(int16_t x, int16_t y, char c, int16_t textColor, int16_t bgColor, uint8_t size){
uint8_t line; // vertical column of pixels of character in font
int32_t i, j;
if((x >= _width) || // Clip right