-
Notifications
You must be signed in to change notification settings - Fork 14
/
spi_master_example_main.c
1093 lines (956 loc) · 38.6 KB
/
spi_master_example_main.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
/* SPI Master example
This example code is in the Public Domain (or CC0 licensed, at your option.)
Unless required by applicable law or agreed to in writing, this
software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
CONDITIONS OF ANY KIND, either express or implied.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_system.h"
#include "driver/spi_master.h"
#include "soc/gpio_struct.h"
#include "driver/gpio.h"
spi_device_handle_t spi;
/*
This code displays some fancy graphics on the 320x240 LCD on an ESP-WROVER_KIT board.
This example demonstrates the use of both spi_device_transmit as well as
spi_device_queue_trans/spi_device_get_trans_result and pre-transmit callbacks.
Some info about the ILI9341/ST7789V: It has an C/D line, which is connected to a GPIO here. It expects this
line to be low for a command and high for data. We use a pre-transmit callback here to control that
line: every transaction has as the user-definable argument the needed state of the D/C line and just
before the transaction is sent, the callback will set this line to the correct state.
*/
#define PIN_NUM_MISO 19
#define PIN_NUM_MOSI 23
#define PIN_NUM_CLK 18
#define PIN_NUM_CS 14
#define PIN_NUM_DC 27
#define PIN_NUM_RST 33
//To speed up transfers, every SPI transfer sends a bunch of lines. This define specifies how many. More means more memory use,
//but less overhead for setting up / finishing transfers. Make sure 240 is dividable by this.
#include "3dconfig.hpp"
#define PARALLEL_LINES DRAW_NLINES
/*
The LCD needs a bunch of command/argument values to be initialized. They are stored in this struct.
*/
#define CONFIG_LCD_TYPE_ILI9341
//#define CONFIG_LCD_OVERCLOCK
typedef struct {
uint8_t cmd;
uint8_t data[16];
uint8_t databytes; //No of data in data; bit 7 = delay after set; 0xFF = end of cmds.
} lcd_init_cmd_t;
typedef enum {
LCD_TYPE_ILI = 1,
LCD_TYPE_ST,
LCD_TYPE_MAX,
} type_lcd_t;
//Place data into DRAM. Constant data gets placed into DROM by default, which is not accessible by DMA.
DRAM_ATTR static const lcd_init_cmd_t st_init_cmds[]={
/* Memory Data Access Control, MX=MV=1, MY=ML=MH=0, RGB=0 */
{0x36, {(1<<5)|(1<<6)}, 1},
/* Interface Pixel Format, 16bits/pixel for RGB/MCU interface */
{0x3A, {0x55}, 1},
/* Porch Setting */
{0xB2, {0x0c, 0x0c, 0x00, 0x33, 0x33}, 5},
/* Gate Control, Vgh=13.65V, Vgl=-10.43V */
{0xB7, {0x45}, 1},
/* VCOM Setting, VCOM=1.175V */
{0xBB, {0x2B}, 1},
/* LCM Control, XOR: BGR, MX, MH */
{0xC0, {0x2C}, 1},
/* VDV and VRH Command Enable, enable=1 */
{0xC2, {0x01, 0xff}, 2},
/* VRH Set, Vap=4.4+... */
{0xC3, {0x11}, 1},
/* VDV Set, VDV=0 */
{0xC4, {0x20}, 1},
/* Frame Rate Control, 60Hz, inversion=0 */
{0xC6, {0x0f}, 1},
/* Power Control 1, AVDD=6.8V, AVCL=-4.8V, VDDS=2.3V */
{0xD0, {0xA4, 0xA1}, 1},
/* Positive Voltage Gamma Control */
{0xE0, {0xD0, 0x00, 0x05, 0x0E, 0x15, 0x0D, 0x37, 0x43, 0x47, 0x09, 0x15, 0x12, 0x16, 0x19}, 14},
/* Negative Voltage Gamma Control */
{0xE1, {0xD0, 0x00, 0x05, 0x0D, 0x0C, 0x06, 0x2D, 0x44, 0x40, 0x0E, 0x1C, 0x18, 0x16, 0x19}, 14},
/* Sleep Out */
{0x11, {0}, 0x80},
/* Display On */
{0x29, {0}, 0x80},
{0, {0}, 0xff}
};
DRAM_ATTR static const lcd_init_cmd_t ili_init_cmds[]={
/* Power contorl B, power control = 0, DC_ENA = 1 */
{0xCF, {0x00, 0x83, 0X30}, 3},
/* Power on sequence control,
* cp1 keeps 1 frame, 1st frame enable
* vcl = 0, ddvdh=3, vgh=1, vgl=2
* DDVDH_ENH=1
*/
{0xED, {0x64, 0x03, 0X12, 0X81}, 4},
/* Driver timing control A,
* non-overlap=default +1
* EQ=default - 1, CR=default
* pre-charge=default - 1
*/
{0xE8, {0x85, 0x01, 0x79}, 3},
/* Power control A, Vcore=1.6V, DDVDH=5.6V */
{0xCB, {0x39, 0x2C, 0x00, 0x34, 0x02}, 5},
/* Pump ratio control, DDVDH=2xVCl */
{0xF7, {0x20}, 1},
/* Driver timing control, all=0 unit */
{0xEA, {0x00, 0x00}, 2},
/* Power control 1, GVDD=4.75V */
{0xC0, {0x26}, 1},
/* Power control 2, DDVDH=VCl*2, VGH=VCl*7, VGL=-VCl*3 */
{0xC1, {0x11}, 1},
/* VCOM control 1, VCOMH=4.025V, VCOML=-0.950V */
{0xC5, {0x35, 0x3E}, 2},
/* VCOM control 2, VCOMH=VMH-2, VCOML=VML-2 */
{0xC7, {0xBE}, 1},
/* Memory access contorl, MX=MY=0, MV=1, ML=0, BGR=1, MH=0 */
{0x36, {0x28}, 1},
/* Pixel format, 16bits/pixel for RGB/MCU interface */
{0x3A, {0x55}, 1},
/* Frame rate control, f=fosc, 70Hz fps */
{0xB1, {0x00, 0x1B}, 2},
/* Enable 3G, disabled */
{0xF2, {0x08}, 1},
/* Gamma set, curve 1 */
{0x26, {0x01}, 1},
/* Positive gamma correction */
{0xE0, {0x1F, 0x1A, 0x18, 0x0A, 0x0F, 0x06, 0x45, 0X87, 0x32, 0x0A, 0x07, 0x02, 0x07, 0x05, 0x00}, 15},
/* Negative gamma correction */
{0XE1, {0x00, 0x25, 0x27, 0x05, 0x10, 0x09, 0x3A, 0x78, 0x4D, 0x05, 0x18, 0x0D, 0x38, 0x3A, 0x1F}, 15},
/* Column address set, SC=0, EC=0xEF */
{0x2A, {0x00, 0x00, 0x00, 0xEF}, 4},
/* Page address set, SP=0, EP=0x013F */
{0x2B, {0x00, 0x00, 0x01, 0x3f}, 4},
/* Memory write */
{0x2C, {0}, 0},
/* Entry mode set, Low vol detect disabled, normal display */
{0xB7, {0x07}, 1},
/* Display function control */
{0xB6, {0x0A, 0x82, 0x27, 0x00}, 4},
/* Sleep out */
{0x11, {0}, 0x80},
/* Display on */
{0x29, {0}, 0x80},
{0, {0}, 0xff},
};
//Send a command to the LCD. Uses spi_device_transmit, which waits until the transfer is complete.
void lcd_cmd(spi_device_handle_t spi, const uint8_t cmd)
{
esp_err_t ret;
spi_transaction_t t;
memset(&t, 0, sizeof(t)); //Zero out the transaction
t.length=8; //Command is 8 bits
t.tx_buffer=&cmd; //The data is the cmd itself
t.user=(void*)0; //D/C needs to be set to 0
ret=spi_device_transmit(spi, &t); //Transmit!
assert(ret==ESP_OK); //Should have had no issues.
}
//Send data to the LCD. Uses spi_device_transmit, which waits until the transfer is complete.
void lcd_data(spi_device_handle_t spi,uint8_t data)
{
esp_err_t ret;
spi_transaction_t t;
memset(&t, 0, sizeof(t)); //Zero out the transaction
t.length=1*8; //Len is in bytes, transaction length is in bits.
t.tx_buffer=&data; //Data
t.user=(void*)1; //D/C needs to be set to 1
ret=spi_device_transmit(spi, &t); //Transmit!
assert(ret==ESP_OK); //Should have had no issues.
}
//This function is called (in irq context!) just before a transmission starts. It will
//set the D/C line to the value indicated in the user field.
void lcd_spi_pre_transfer_callback(spi_transaction_t *t)
{
int dc=(int)t->user;
gpio_set_level(PIN_NUM_DC, dc);
}
uint32_t lcd_get_id(spi_device_handle_t spi)
{
//get_id cmd
lcd_cmd( spi, 0x04);
spi_transaction_t t;
memset(&t, 0, sizeof(t));
t.length=8*3;
t.flags = SPI_TRANS_USE_RXDATA;
t.user = (void*)1;
esp_err_t ret = spi_device_transmit(spi, &t);
assert( ret == ESP_OK );
return *(uint32_t*)t.rx_data;
}
// Change the width and height if required (defined in portrait mode)
// or use the constructor to over-ride defaults
#define TFT_WIDTH 240
#define TFT_HEIGHT 320
// Color definitions for backwards compatibility with old sketches
// use colour definitions like TFT_BLACK to make sketches more portable
#define ILI9341_BLACK 0x0000 /* 0, 0, 0 */
#define ILI9341_NAVY 0x000F /* 0, 0, 128 */
#define ILI9341_DARKGREEN 0x03E0 /* 0, 128, 0 */
#define ILI9341_DARKCYAN 0x03EF /* 0, 128, 128 */
#define ILI9341_MAROON 0x7800 /* 128, 0, 0 */
#define ILI9341_PURPLE 0x780F /* 128, 0, 128 */
#define ILI9341_OLIVE 0x7BE0 /* 128, 128, 0 */
#define ILI9341_LIGHTGREY 0xC618 /* 192, 192, 192 */
#define ILI9341_DARKGREY 0x7BEF /* 128, 128, 128 */
#define ILI9341_BLUE 0x001F /* 0, 0, 255 */
#define ILI9341_GREEN 0x07E0 /* 0, 255, 0 */
#define ILI9341_CYAN 0x07FF /* 0, 255, 255 */
#define ILI9341_RED 0xF800 /* 255, 0, 0 */
#define ILI9341_MAGENTA 0xF81F /* 255, 0, 255 */
#define ILI9341_YELLOW 0xFFE0 /* 255, 255, 0 */
#define ILI9341_WHITE 0xFFFF /* 255, 255, 255 */
#define ILI9341_ORANGE 0xFD20 /* 255, 165, 0 */
#define ILI9341_GREENYELLOW 0xAFE5 /* 173, 255, 47 */
#define ILI9341_PINK 0xF81F
#define BLACK 0x0000 /* 0, 0, 0 */
#define NAVY 0x000F /* 0, 0, 128 */
#define DARKGREEN 0x03E0 /* 0, 128, 0 */
#define DARKCYAN 0x03EF /* 0, 128, 128 */
#define MAROON 0x7800 /* 128, 0, 0 */
#define PURPLE 0x780F /* 128, 0, 128 */
#define OLIVE 0x7BE0 /* 128, 128, 0 */
#define LIGHTGREY 0xC618 /* 192, 192, 192 */
#define DARKGREY 0x7BEF /* 128, 128, 128 */
#define BLUE 0x001F /* 0, 0, 255 */
#define GREEN 0x07E0 /* 0, 255, 0 */
#define CYAN 0x07FF /* 0, 255, 255 */
#define RED 0xF800 /* 255, 0, 0 */
#define MAGENTA 0xF81F /* 255, 0, 255 */
#define YELLOW 0xFFE0 /* 255, 255, 0 */
#define WHITE 0xFFFF /* 255, 255, 255 */
#define ORANGE 0xFD20 /* 255, 165, 0 */
#define GREENYELLOW 0xAFE5 /* 173, 255, 47 */
#define PINK 0xF81F
// Delay between some initialisation commands
#define TFT_INIT_DELAY 0x80 // Not used unless commandlist invoked
// Generic commands used by TFT_eSPI.cpp
#define TFT_NOP 0x00
#define TFT_SWRST 0x01
#define TFT_CASET 0x2A
#define TFT_PASET 0x2B
#define TFT_RAMWR 0x2C
#define TFT_RAMRD 0x2E
#define TFT_IDXRD 0xDD // ILI9341 only, indexed control register read
#define TFT_MADCTL 0x36
#define TFT_MAD_MY 0x80
#define TFT_MAD_MX 0x40
#define TFT_MAD_MV 0x20
#define TFT_MAD_ML 0x10
#define TFT_MAD_BGR 0x08
#define TFT_MAD_MH 0x04
#define TFT_MAD_RGB 0x00
#define TFT_INVOFF 0x20
#define TFT_INVON 0x21
// All ILI9341 specific commands some are used by init()
#define ILI9341_NOP 0x00
#define ILI9341_SWRESET 0x01
#define ILI9341_RDDID 0x04
#define ILI9341_RDDST 0x09
#define ILI9341_SLPIN 0x10
#define ILI9341_SLPOUT 0x11
#define ILI9341_PTLON 0x12
#define ILI9341_NORON 0x13
#define ILI9341_RDMODE 0x0A
#define ILI9341_RDMADCTL 0x0B
#define ILI9341_RDPIXFMT 0x0C
#define ILI9341_RDIMGFMT 0x0A
#define ILI9341_RDSELFDIAG 0x0F
#define ILI9341_INVOFF 0x20
#define ILI9341_INVON 0x21
#define ILI9341_GAMMASET 0x26
#define ILI9341_DISPOFF 0x28
#define ILI9341_DISPON 0x29
#define ILI9341_CASET 0x2A
#define ILI9341_PASET 0x2B
#define ILI9341_RAMWR 0x2C
#define ILI9341_RAMRD 0x2E
#define ILI9341_PTLAR 0x30
#define ILI9341_VSCRDEF 0x33
#define ILI9341_MADCTL 0x36
#define ILI9341_VSCRSADD 0x37
#define ILI9341_PIXFMT 0x3A
#define ILI9341_WRDISBV 0x51
#define ILI9341_RDDISBV 0x52
#define ILI9341_WRCTRLD 0x53
#define ILI9341_FRMCTR1 0xB1
#define ILI9341_FRMCTR2 0xB2
#define ILI9341_FRMCTR3 0xB3
#define ILI9341_INVCTR 0xB4
#define ILI9341_DFUNCTR 0xB6
#define ILI9341_PWCTR1 0xC0
#define ILI9341_PWCTR2 0xC1
#define ILI9341_PWCTR3 0xC2
#define ILI9341_PWCTR4 0xC3
#define ILI9341_PWCTR5 0xC4
#define ILI9341_VMCTR1 0xC5
#define ILI9341_VMCTR2 0xC7
#define ILI9341_RDID4 0xD3
#define ILI9341_RDINDEX 0xD9
#define ILI9341_RDID1 0xDA
#define ILI9341_RDID2 0xDB
#define ILI9341_RDID3 0xDC
#define ILI9341_RDIDX 0xDD // TBC
#define ILI9341_GMCTRP1 0xE0
#define ILI9341_GMCTRN1 0xE1
#define ILI9341_MADCTL_MY 0x80
#define ILI9341_MADCTL_MX 0x40
#define ILI9341_MADCTL_MV 0x20
#define ILI9341_MADCTL_ML 0x10
#define ILI9341_MADCTL_RGB 0x00
#define ILI9341_MADCTL_BGR 0x08
#define ILI9341_MADCTL_MH 0x04
//Initialize the display
void lcd_init(spi_device_handle_t spi)
{
int cmd=0;
const lcd_init_cmd_t* lcd_init_cmds;
//Initialize non-SPI GPIOs
gpio_set_direction(PIN_NUM_DC, GPIO_MODE_OUTPUT);
gpio_set_direction(PIN_NUM_RST, GPIO_MODE_OUTPUT);
//Reset the display
gpio_set_level(PIN_NUM_RST, 0);
vTaskDelay(100 / portTICK_RATE_MS);
gpio_set_level(PIN_NUM_RST, 1);
vTaskDelay(150 / portTICK_RATE_MS);
lcd_cmd(spi,0xEF);
lcd_data(spi,0x03);
lcd_data(spi,0x80);
lcd_data(spi,0x02);
lcd_cmd(spi,0xCF);
lcd_data(spi,0x00);
lcd_data(spi,0XC1);
lcd_data(spi,0X30);
lcd_cmd(spi,0xED);
lcd_data(spi,0x64);
lcd_data(spi,0x03);
lcd_data(spi,0X12);
lcd_data(spi,0X81);
lcd_cmd(spi,0xE8);
lcd_data(spi,0x85);
lcd_data(spi,0x00);
lcd_data(spi,0x78);
lcd_cmd(spi,0xCB);
lcd_data(spi,0x39);
lcd_data(spi,0x2C);
lcd_data(spi,0x00);
lcd_data(spi,0x34);
lcd_data(spi,0x02);
lcd_cmd(spi,0xF7);
lcd_data(spi,0x20);
lcd_cmd(spi,0xEA);
lcd_data(spi,0x00);
lcd_data(spi,0x00);
lcd_cmd(spi,ILI9341_PWCTR1); //Power control
lcd_data(spi,0x23); //VRH[5:0]
lcd_cmd(spi,ILI9341_PWCTR2); //Power control
lcd_data(spi,0x10); //SAP[2:0];BT[3:0]
lcd_cmd(spi,ILI9341_VMCTR1); //VCM control
lcd_data(spi,0x3e);
lcd_data(spi,0x28);
lcd_cmd(spi,ILI9341_VMCTR2); //VCM control2
lcd_data(spi,0x86); //--
lcd_cmd(spi,ILI9341_MADCTL); // Memory Access Control
/* #ifdef M5STACK */
lcd_data(spi,0xA8); // Rotation 0 (portrait mode)
/* #else */
// lcd_data(spi,0x48); // Rotation 0 (portrait mode)
/* #endif */
lcd_cmd(spi,ILI9341_PIXFMT);
lcd_data(spi,0x55);
lcd_cmd(spi,ILI9341_FRMCTR1);
lcd_data(spi,0x00);
lcd_data(spi,0x13); // 0x18 79Hz, 0x1B default 70Hz, 0x13 100Hz
lcd_cmd(spi,ILI9341_DFUNCTR); // Display Function Control
lcd_data(spi,0x08);
lcd_data(spi,0x82);
lcd_data(spi,0x27);
lcd_cmd(spi,0xF2); // 3Gamma Function Disable
lcd_data(spi,0x00);
lcd_cmd(spi,ILI9341_GAMMASET); //Gamma curve selected
lcd_data(spi,0x01);
lcd_cmd(spi,ILI9341_GMCTRP1); //Set Gamma
lcd_data(spi,0x0F);
lcd_data(spi,0x31);
lcd_data(spi,0x2B);
lcd_data(spi,0x0C);
lcd_data(spi,0x0E);
lcd_data(spi,0x08);
lcd_data(spi,0x4E);
lcd_data(spi,0xF1);
lcd_data(spi,0x37);
lcd_data(spi,0x07);
lcd_data(spi,0x10);
lcd_data(spi,0x03);
lcd_data(spi,0x0E);
lcd_data(spi,0x09);
lcd_data(spi,0x00);
lcd_cmd(spi,ILI9341_GMCTRN1); //Set Gamma
lcd_data(spi,0x00);
lcd_data(spi,0x0E);
lcd_data(spi,0x14);
lcd_data(spi,0x03);
lcd_data(spi,0x11);
lcd_data(spi,0x07);
lcd_data(spi,0x31);
lcd_data(spi,0xC1);
lcd_data(spi,0x48);
lcd_data(spi,0x08);
lcd_data(spi,0x0F);
lcd_data(spi,0x0C);
lcd_data(spi,0x31);
lcd_data(spi,0x36);
lcd_data(spi,0x0F);
lcd_cmd(spi,ILI9341_SLPOUT); //Exit Sleep
vTaskDelay(120/ portTICK_RATE_MS);
lcd_cmd(spi,ILI9341_DISPON); //Display on
vTaskDelay(10/ portTICK_RATE_MS);
// This is the command sequence that rotates the ILI9341 driver coordinate frame
lcd_cmd(spi,TFT_MADCTL);
lcd_data(spi,TFT_MAD_BGR);
/* //detect LCD type */
/* uint32_t lcd_id = lcd_get_id(spi); */
/* int lcd_detected_type = 0; */
/* int lcd_type; */
/* printf("LCD ID: %08X\n", lcd_id); */
/* if ( lcd_id == 0 ) { */
/* //zero, ili */
/* lcd_detected_type = LCD_TYPE_ILI; */
/* printf("ILI9341 detected.\n"); */
/* } else { */
/* // none-zero, ST */
/* lcd_detected_type = LCD_TYPE_ST; */
/* printf("ST7789V detected.\n"); */
/* } */
/* #ifdef CONFIG_LCD_TYPE_AUTO */
/* lcd_type = lcd_detected_type; */
/* #elif defined( CONFIG_LCD_TYPE_ST7789V ) */
/* printf("kconfig: force CONFIG_LCD_TYPE_ST7789V.\n"); */
/* lcd_type = LCD_TYPE_ST; */
/* #elif defined( CONFIG_LCD_TYPE_ILI9341 ) */
/* printf("kconfig: force CONFIG_LCD_TYPE_ILI9341.\n"); */
/* lcd_type = LCD_TYPE_ILI; */
/* #endif */
/* if ( lcd_type == LCD_TYPE_ST ) { */
/* printf("LCD ST7789V initialization.\n"); */
/* lcd_init_cmds = st_init_cmds; */
/* } else { */
/* printf("LCD ILI9341 initialization.\n"); */
/* lcd_init_cmds = ili_init_cmds; */
/* } */
/* //Send all the commands */
/* while (lcd_init_cmds[cmd].databytes!=0xff) { */
/* lcd_cmd(spi, lcd_init_cmds[cmd].cmd); */
/* lcd_data(spi, lcd_init_cmds[cmd].data, lcd_init_cmds[cmd].databytes&0x1F); */
/* if (lcd_init_cmds[cmd].databytes&0x80) { */
/* vTaskDelay(100 / portTICK_RATE_MS); */
/* } */
/* cmd++; */
/* } */
}
static void send_line_finish(spi_device_handle_t spi)
{
spi_transaction_t *rtrans;
esp_err_t ret;
//Wait for all 6 transactions to be done and get back the results.
for (int x=0; x<6; x++) {
ret=spi_device_get_trans_result(spi, &rtrans, portMAX_DELAY);
assert(ret==ESP_OK);
//We could inspect rtrans now if we received any info back. The LCD is treated as write-only, though.
}
}
static
int isnotfirst;
//To send a set of lines we have to send a command, 2 data bytes, another command, 2 more data bytes and another command
//before sending the line data itself; a total of 6 transactions. (We can't put all of this in just one transaction
//because the D/C line needs to be toggled in the middle.)
//This routine queues these commands up so they get sent as quickly as possible.
void send_line(int ypos, uint16_t *linedata)
{
if(isnotfirst){
send_line_finish(spi);
}
isnotfirst = 1;
esp_err_t ret;
int x;
//Transaction descriptors. Declared static so they're not allocated on the stack; we need this memory even when this
//function is finished because the SPI driver needs access to it even while we're already calculating the next line.
static spi_transaction_t trans[6];
//In theory, it's better to initialize trans and data only once and hang on to the initialized
//variables. We allocate them on the stack, so we need to re-init them each call.
for (x=0; x<6; x++) {
memset(&trans[x], 0, sizeof(spi_transaction_t));
if ((x&1)==0) {
//Even transfers are commands
trans[x].length=8;
trans[x].user=(void*)0;
} else {
//Odd transfers are data
trans[x].length=8*4;
trans[x].user=(void*)1;
}
trans[x].flags=SPI_TRANS_USE_TXDATA;
}
trans[0].tx_data[0]=0x2A; //Column Address Set
trans[1].tx_data[0]=(160-window_width/2)>>8; //Start Col High
trans[1].tx_data[1]=(160-window_width/2)&0xFF; //Start Col Low
trans[1].tx_data[2]=(window_width/2+160-1)>>8; //End Col High
trans[1].tx_data[3]=(window_width/2+160-1)&0xff; //End Col Low
trans[2].tx_data[0]=0x2B; //Page address set
trans[3].tx_data[0]=(ypos+120-window_height/2)>>8; //Start page high
trans[3].tx_data[1]=(ypos+120-window_height/2)&0xff; //start page low
trans[3].tx_data[2]=(ypos+120-window_height/2+PARALLEL_LINES+2)>>8; //end page high
trans[3].tx_data[3]=(ypos+120-window_height/2+PARALLEL_LINES)&0xff; //end page low
trans[4].tx_data[0]=0x2C; //memory write
trans[5].tx_buffer=linedata; //finally send the line data
trans[5].length=window_width*2*8*PARALLEL_LINES; //Data length, in bits
trans[5].flags=0; //undo SPI_TRANS_USE_TXDATA flag
//Queue all transactions.
for (x=0; x<6; x++) {
ret=spi_device_queue_trans(spi, &trans[x], portMAX_DELAY);
assert(ret==ESP_OK);
}
//When we are here, the SPI driver is busy (in the background) getting the transactions sent. That happens
//mostly using DMA, so the CPU doesn't have much to do here. We're not going to wait for the transaction to
//finish because we may as well spend the time calculating the next line. When that is done, we can call
//send_line_finish, which will wait for the transfers to be done and check their status.
}
int main3d();
/* /\* SPI Master example */
/* This example code is in the Public Domain (or CC0 licensed, at your option.) */
/* Unless required by applicable law or agreed to in writing, this */
/* software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR */
/* CONDITIONS OF ANY KIND, either express or implied. */
/* *\/ */
/* #include <stdio.h> */
/* #include <stdlib.h> */
/* #include <string.h> */
/* #include "freertos/FreeRTOS.h" */
/* #include "freertos/task.h" */
/* #include "esp_system.h" */
/* #include "driver/spi_master.h" */
/* #include "soc/gpio_struct.h" */
/* #include "driver/gpio.h" */
/* spi_device_handle_t spi; */
/* /\* */
/* This code displays some fancy graphics on the ILI9341-based 320x240 LCD on an ESP-WROVER_KIT board. */
/* It is not very fast, even when the SPI transfer itself happens at 8MHz and with DMA, because */
/* the rest of the code is not very optimized. Especially calculating the image line-by-line */
/* is inefficient; it would be quicker to send an entire screenful at once. This example does, however, */
/* demonstrate the use of both spi_device_transmit as well as spi_device_queue_trans/spi_device_get_trans_result */
/* as well as pre-transmit callbacks. */
/* Some info about the ILI9341: It has an C/D line, which is connected to a GPIO here. It expects this */
/* line to be low for a command and high for data. We use a pre-transmit callback here to control that */
/* line: every transaction has as the user-definable argument the needed state of the D/C line and just */
/* before the transaction is sent, the callback will set this line to the correct state. */
/* *\/ */
/* int main3d(); */
/* /\* */
/* The ILI9341 needs a bunch of command/argument values to be initialized. They are stored in this struct. */
/* *\/ */
/* typedef struct { */
/* uint8_t cmd; */
/* uint8_t data[16]; */
/* uint8_t databytes; //No of data in data; bit 7 = delay after set; 0xFF = end of cmds. */
/* } ili_init_cmd_t; */
/* //Send a command to the ILI9341. Uses spi_device_transmit, which waits until the transfer is complete. */
/* void ili_cmd(spi_device_handle_t spi, const uint8_t cmd) */
/* { */
/* esp_err_t ret; */
/* spi_transaction_t t; */
/* memset(&t, 0, sizeof(t)); //Zero out the transaction */
/* t.length=8; //Command is 8 bits */
/* t.tx_buffer=&cmd; //The data is the cmd itself */
/* t.user=(void*)0; //D/C needs to be set to 0 */
/* ret=spi_device_transmit(spi, &t); //Transmit! */
/* assert(ret==ESP_OK); //Should have had no issues. */
/* } */
/* //Send data to the ILI9341. Uses spi_device_transmit, which waits until the transfer is complete. */
/* void ili_data(spi_device_handle_t spi, const uint8_t *data, int len) */
/* { */
/* esp_err_t ret; */
/* spi_transaction_t t; */
/* if (len==0) return; //no need to send anything */
/* memset(&t, 0, sizeof(t)); //Zero out the transaction */
/* t.length=len*8; //Len is in bytes, transaction length is in bits. */
/* t.tx_buffer=data; //Data */
/* t.user=(void*)1; //D/C needs to be set to 1 */
/* ret=spi_device_transmit(spi, &t); //Transmit! */
/* assert(ret==ESP_OK); //Should have had no issues. */
/* } */
/* //This function is called (in irq context!) just before a transmission starts. It will */
/* //set the D/C line to the value indicated in the user field. */
/* void ili_spi_pre_transfer_callback(spi_transaction_t *t) */
/* { */
/* int dc=(int)t->user; */
/* gpio_set_level(PIN_NUM_DC, dc); */
/* } */
/* //Initialize the display */
/* void ili_init(spi_device_handle_t spi) */
/* { */
/* //Initialize non-SPI GPIOs */
/* gpio_set_direction(PIN_NUM_DC, GPIO_MODE_OUTPUT); */
/* gpio_set_direction(PIN_NUM_RST, GPIO_MODE_OUTPUT); */
/* gpio_set_direction(PIN_NUM_BCKL, GPIO_MODE_OUTPUT); */
/* //Reset the display */
/* gpio_set_level(PIN_NUM_RST, 0); */
/* vTaskDelay(100 / portTICK_RATE_MS); */
/* gpio_set_level(PIN_NUM_RST, 1); */
/* vTaskDelay(100 / portTICK_RATE_MS); */
/* /\* //Send all the commands *\/ */
/* /\* ili_cmd(spi, ili_init_cmds[cmd].cmd); *\/ */
/* /\* ili_data(spi, ili_init_cmds[cmd].data, ili_init_cmds[cmd].databytes&0x1F); *\/ */
/* uint8_t data; */
/* #define TRANS_1DATA(x) { \ */
/* data = (x); \ */
/* ili_data(spi,&data,1); \ */
/* } */
/* ili_cmd(spi,0x11); //Exit Sleep */
/* vTaskDelay(20/portTICK_RATE_MS); */
/* ili_cmd(spi,0x26); //Set Default Gamma */
/* TRANS_1DATA(0x04); */
/* ili_cmd(spi,0xB1);//Set Frame Rate */
/* TRANS_1DATA(0x0C); */
/* TRANS_1DATA(0x14); */
/* ili_cmd(spi,0xC0); //Set VRH1[4:0] & VC[2:0] for VCI1 & GVDD */
/* TRANS_1DATA(0x0C); */
/* TRANS_1DATA(0x05); */
/* ili_cmd(spi,0xC1); //Set BT[2:0] for AVDD & VCL & VGH & VGL */
/* TRANS_1DATA(0x02);//0x00 */
/* ili_cmd(spi,0xC5); //Set VMH[6:0] & VML[6:0] for VOMH & VCOML */
/* TRANS_1DATA(0x29); //31 21 29 */
/* TRANS_1DATA(0x43); //58 48 43 */
/* ili_cmd(spi,0xC7); */
/* TRANS_1DATA(0x40); */
/* ili_cmd(spi,0x3a); //Set Color Format */
/* TRANS_1DATA(0x05); */
/* /\* */
/* ili_cmd(spi,0x2A); //Set Column Address */
/* TRANS_1DATA(0x00); */
/* TRANS_1DATA(0x00); */
/* TRANS_1DATA(0x00); */
/* TRANS_1DATA(0x7F); */
/* ili_cmd(spi,0x2B); //Set Page Address */
/* TRANS_1DATA(0x00); */
/* TRANS_1DATA(0x00); */
/* TRANS_1DATA(0x00); */
/* TRANS_1DATA(0x9F); */
/* *\/ */
/* ili_cmd(spi,0x36); //Set Scanning Direction */
/* #if 0 */
/* TRANS_1DATA(0xC8); //0xc8 */
/* #else */
/* TRANS_1DATA(0xA8); //0xA8 */
/* #endif */
/* ili_cmd(spi,0xB7); //Set Source Output Direction */
/* TRANS_1DATA(0x00); */
/* ili_cmd(spi,0xF2); //Enable Gamma bit */
/* TRANS_1DATA(0x01); */
/* /\* */
/* ili_cmd(spi,0xE0); */
/* TRANS_1DATA(0x36);//p1 */
/* TRANS_1DATA(0x29);//p2 */
/* TRANS_1DATA(0x12);//p3 */
/* TRANS_1DATA(0x22);//p4 */
/* TRANS_1DATA(0x1C);//p5 */
/* TRANS_1DATA(0x15);//p6 */
/* TRANS_1DATA(0x42);//p7 */
/* TRANS_1DATA(0xB7);//p8 */
/* TRANS_1DATA(0x2F);//p9 */
/* TRANS_1DATA(0x13);//p10 */
/* TRANS_1DATA(0x12);//p11 */
/* TRANS_1DATA(0x0A);//p12 */
/* TRANS_1DATA(0x11);//p13 */
/* TRANS_1DATA(0x0B);//p14 */
/* TRANS_1DATA(0x06);//p15 */
/* ili_cmd(spi,0xE1); */
/* TRANS_1DATA(0x09);//p1 */
/* TRANS_1DATA(0x16);//p2 */
/* TRANS_1DATA(0x2D);//p3 */
/* TRANS_1DATA(0x0D);//p4 */
/* TRANS_1DATA(0x13);//p5 */
/* TRANS_1DATA(0x15);//p6 */
/* TRANS_1DATA(0x40);//p7 */
/* TRANS_1DATA(0x48);//p8 */
/* TRANS_1DATA(0x53);//p9 */
/* TRANS_1DATA(0x0C);//p10 */
/* TRANS_1DATA(0x1D);//p11 */
/* TRANS_1DATA(0x25);//p12 */
/* TRANS_1DATA(0x2E);//p13 */
/* TRANS_1DATA(0x34);//p14 */
/* TRANS_1DATA(0x39);//p15 */
/* *\/ */
/* ili_cmd(spi,0x29); // Display On */
/* ili_cmd(spi,0x2c); */
/* //CS0 = 1; */
/* } */
/* void send_line_finish(void) */
/* { */
/* spi_transaction_t *rtrans; */
/* esp_err_t ret; */
/* //Wait for all 6 transactions to be done and get back the results. */
/* for (int x=0; x<5; x++) { */
/* ret=spi_device_get_trans_result(spi, &rtrans, portMAX_DELAY); */
/* assert(ret==ESP_OK); */
/* //We could inspect rtrans now if we received any info back. The LCD is treated as write-only, though. */
/* } */
/* } */
/* void send_aline_finish(void) */
/* { */
/* spi_transaction_t *rtrans; */
/* esp_err_t ret; */
/* //Wait for all 6 transactions to be done and get back the results. */
/* for (int x=0; x<1; x++) { */
/* ret=spi_device_get_trans_result(spi, &rtrans, portMAX_DELAY); */
/* assert(ret==ESP_OK); */
/* //We could inspect rtrans now if we received any info back. The LCD is treated as write-only, though. */
/* } */
/* } */
/* //To send a line we have to send a command, 2 data bytes, another command, 2 more data bytes and another command */
/* //before sending the line data itself; a total of 6 transactions. (We can't put all of this in just one transaction */
/* //because the D/C line needs to be toggled in the middle.) */
/* //This routine queues these commands up so they get sent as quickly as possible. */
/* void send_first(int ypos) */
/* { */
/* esp_err_t ret; */
/* int x; */
/* //Transaction descriptors. Declared static so they're not allocated on the stack; we need this memory even when this */
/* //function is finished because the SPI driver needs access to it even while we're already calculating the next line. */
/* static spi_transaction_t trans[6]; */
/* static int transed; */
/* //In theory, it's better to initialize trans and data only once and hang on to the initialized */
/* //variables. We allocate them on the stack, so we need to re-init them each call. */
/* for (x=0; x<6; x++) { */
/* memset(&trans[x], 0, sizeof(spi_transaction_t)); */
/* if ((x&1)==0) { */
/* //Even transfers are commands */
/* trans[x].length=8; */
/* trans[x].user=(void*)0; */
/* } else { */
/* //Odd transfers are data */
/* trans[x].length=8*4; */
/* trans[x].user=(void*)1; */
/* } */
/* trans[x].flags=SPI_TRANS_USE_TXDATA; */
/* } */
/* trans[0].tx_data[0]=0x2A; //Column Address Set */
/* trans[1].tx_data[0]=1; //Start Col High */
/* trans[1].tx_data[1]=1; //Start Col Low */
/* trans[1].tx_data[3]=160; //End Col Low */
/* trans[2].tx_data[0]=0x2B; //Page address set */
/* trans[3].tx_data[0]=(ypos+2)>>8; //Start page high */
/* trans[3].tx_data[1]=(ypos+2)&0xff; //start page low */
/* trans[3].tx_data[2]=(129)>>8; //end page high */
/* trans[3].tx_data[3]=(129)&0xff; //end page low */
/* trans[4].tx_data[0]=0x2C; //memory write */
/* //Queue all transactions. */
/* for (x=0; x<5; x++) { */
/* ret=spi_device_queue_trans(spi, &trans[x], portMAX_DELAY); */
/* assert(ret==ESP_OK); */
/* } */
/* //When we are here, the SPI driver is busy (in the background) getting the transactions sent. That happens */
/* //mostly using DMA, so the CPU doesn't have much to do here. We're not going to wait for the transaction to */
/* //finish because we may as well spend the time calculating the next line. When that is done, we can call */
/* //send_line_finish, which will wait for the transfers to be done and check their status. */
/* send_line_finish(); */
/* } */
/* //To send a line we have to send a command, 2 data bytes, another command, 2 more data bytes and another command */
/* //before sending the line data itself; a total of 6 transactions. (We can't put all of this in just one transaction */
/* //because the D/C line needs to be toggled in the middle.) */
/* //This routine queues these commands up so they get sent as quickly as possible. */
/* void send_line(int ypos, uint16_t *line) */
/* { */
/* esp_err_t ret; */
/* int x; */
/* //Transaction descriptors. Declared static so they're not allocated on the stack; we need this memory even when this */
/* //function is finished because the SPI driver needs access to it even while we're already calculating the next line. */
/* static spi_transaction_t trans[6]; */
/* static int transed; */
/* if(transed!=0)send_aline_finish(); */
/* transed = 1; */
/* //In theory, it's better to initialize trans and data only once and hang on to the initialized */
/* //variables. We allocate them on the stack, so we need to re-init them each call. */
/* for (x=0; x<6; x++) { */
/* memset(&trans[x], 0, sizeof(spi_transaction_t)); */
/* if ((x&1)==0) { */
/* //Even transfers are commands */
/* trans[x].length=8; */
/* trans[x].user=(void*)1; */
/* } else { */
/* //Odd transfers are data */
/* trans[x].length=8*4; */
/* trans[x].user=(void*)1; */
/* } */
/* trans[x].flags=SPI_TRANS_USE_TXDATA; */
/* } */
/* trans[0].tx_buffer=line; //finally send the line data */
/* trans[0].length=160*2*8; //Data length, in bits */
/* trans[0].flags=0; //undo SPI_TRANS_USE_TXDATA flag */
/* //Queue all transactions. */
/* for (x=0; x<1; x++) { */
/* ret=spi_device_queue_trans(spi, &trans[x], portMAX_DELAY); */
/* assert(ret==ESP_OK); */
/* } */
/* //When we are here, the SPI driver is busy (in the background) getting the transactions sent. That happens */
/* //mostly using DMA, so the CPU doesn't have much to do here. We're not going to wait for the transaction to */
/* //finish because we may as well spend the time calculating the next line. When that is done, we can call */
/* //send_line_finish, which will wait for the transfers to be done and check their status. */
/* } */
/* //Simple routine to generate some patterns and send them to the LCD. Don't expect anything too */
/* //impressive. Because the SPI driver handles transactions in the background, we can calculate the next line */
/* //while the previous one is being sent. */
/* static void display_pretty_colors(spi_device_handle_t spi) */
/* { */
/* uint16_t line[2][160]; */
/* int x, y, frame=0; */
/* //Indexes of the line currently being sent to the LCD and the line we're calculating. */
/* int sending_line=-1; */
/* int calc_line=0; */
/* while(1) { */
/* frame++; */
/* for (y=0; y<128; y++) { */
/* //Calculate a line. */
/* for (x=0; x<160; x++) { */
/* line[calc_line][x]=((x<<3)^(y<<3)^(frame+x*y)); */
/* } */
/* //Finish up the sending process of the previous line, if any */
/* //Swap sending_line and calc_line */
/* sending_line=calc_line; */
/* calc_line=(calc_line==1)?0:1; */
/* //Send the line we currently calculated. */
/* send_line(y, line[sending_line]); */
/* //The line is queued up for sending now; the actual sending happens in the */
/* //background. We can go on to calculate the next line as long as we do not */
/* //touch line[sending_line]; the SPI sending process is still reading from that. */
/* } */
/* } */
/* } */
/* void app_main() */
/* { */
/* esp_err_t ret; */
/* spi_bus_config_t buscfg={ */
/* .miso_io_num=PIN_NUM_MISO, */
/* .mosi_io_num=PIN_NUM_MOSI, */
/* .sclk_io_num=PIN_NUM_CLK, */
/* .quadwp_io_num=-1, */
/* .quadhd_io_num=-1 */
/* }; */
/* spi_device_interface_config_t devcfg={ */
/* .clock_speed_hz=20000000, //Clock out at 20 MHz */
/* .mode=0, //SPI mode 0 */
/* .spics_io_num=PIN_NUM_CS, //CS pin */
/* .queue_size=7, //We want to be able to queue 7 transactions at a time */
/* .pre_cb=ili_spi_pre_transfer_callback, //Specify pre-transfer callback to handle D/C line */
/* }; */
/* //Initialize the SPI bus */
/* ret=spi_bus_initialize(HSPI_HOST, &buscfg, 1); */
/* assert(ret==ESP_OK); */
/* //Attach the LCD to the SPI bus */
/* ret=spi_bus_add_device(HSPI_HOST, &devcfg, &spi); */
/* assert(ret==ESP_OK); */
/* //Initialize the LCD */
/* ili_init(spi); */
/* //Go do nice stuff. */
/* /\* display_pretty_colors(spi); *\/ */
/* uint16_t hoge[160]; */
/* printf("start!\n"); */
/* main3d(); */
/* } */
//Simple routine to generate some patterns and send them to the LCD. Don't expect anything too
//impressive. Because the SPI driver handles transactions in the background, we can calculate the next line
//while the previous one is being sent.
/*
This code generates an effect that should pass the 'fancy graphics' qualification
as set in the comment in the spi_master code.
This example code is in the Public Domain (or CC0 licensed, at your option.)
Unless required by applicable law or agreed to in writing, this
software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR