forked from Foundation-Devices/passport-firmware
-
Notifications
You must be signed in to change notification settings - Fork 0
/
lcd-sharp-ls018B7dh02.c
527 lines (490 loc) · 12.3 KB
/
lcd-sharp-ls018B7dh02.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
// SPDX-FileCopyrightText: 2020 Foundation Devices, Inc. <hello@foundationdevices.com>
// SPDX-License-Identifier: GPL-3.0-or-later
//
// Screen driver for Sharp LS018B7DH02 monochrome display
#include <stdio.h>
#include <string.h>
#include "stm32h7xx_hal.h"
#include "lcd-sharp-ls018B7dh02.h"
#define LCD_NSS_PIN GPIO_PIN_15 // port A
#define LCD_SPI_SCK GPIO_PIN_5 // port A
#define LCD_SPI_MOSI GPIO_PIN_7 // port A
Screen screen;
static TIM_HandleTypeDef lcd_refresh_timer_handle;
uint8_t header_lookup[] = {
0x80, 0x00,
0x81, 0x00,
0x80, 0x80,
0x81, 0x80,
0x80, 0x40,
0x81, 0x40,
0x80, 0xc0,
0x81, 0xc0,
0x80, 0x20,
0x81, 0x20,
0x80, 0xa0,
0x81, 0xa0,
0x80, 0x60,
0x81, 0x60,
0x80, 0xe0,
0x81, 0xe0,
0x80, 0x10,
0x81, 0x10,
0x80, 0x90,
0x81, 0x90,
0x80, 0x50,
0x81, 0x50,
0x80, 0xd0,
0x81, 0xd0,
0x80, 0x30,
0x81, 0x30,
0x80, 0xb0,
0x81, 0xb0,
0x80, 0x70,
0x81, 0x70,
0x80, 0xf0,
0x81, 0xf0,
0x80, 0x08,
0x81, 0x08,
0x80, 0x88,
0x81, 0x88,
0x80, 0x48,
0x81, 0x48,
0x80, 0xc8,
0x81, 0xc8,
0x80, 0x28,
0x81, 0x28,
0x80, 0xa8,
0x81, 0xa8,
0x80, 0x68,
0x81, 0x68,
0x80, 0xe8,
0x81, 0xe8,
0x80, 0x18,
0x81, 0x18,
0x80, 0x98,
0x81, 0x98,
0x80, 0x58,
0x81, 0x58,
0x80, 0xd8,
0x81, 0xd8,
0x80, 0x38,
0x81, 0x38,
0x80, 0xb8,
0x81, 0xb8,
0x80, 0x78,
0x81, 0x78,
0x80, 0xf8,
0x81, 0xf8,
0x80, 0x04,
0x81, 0x04,
0x80, 0x84,
0x81, 0x84,
0x80, 0x44,
0x81, 0x44,
0x80, 0xc4,
0x81, 0xc4,
0x80, 0x24,
0x81, 0x24,
0x80, 0xa4,
0x81, 0xa4,
0x80, 0x64,
0x81, 0x64,
0x80, 0xe4,
0x81, 0xe4,
0x80, 0x14,
0x81, 0x14,
0x80, 0x94,
0x81, 0x94,
0x80, 0x54,
0x81, 0x54,
0x80, 0xd4,
0x81, 0xd4,
0x80, 0x34,
0x81, 0x34,
0x80, 0xb4,
0x81, 0xb4,
0x80, 0x74,
0x81, 0x74,
0x80, 0xf4,
0x81, 0xf4,
0x80, 0x0c,
0x81, 0x0c,
0x80, 0x8c,
0x81, 0x8c,
0x80, 0x4c,
0x81, 0x4c,
0x80, 0xcc,
0x81, 0xcc,
0x80, 0x2c,
0x81, 0x2c,
0x80, 0xac,
0x81, 0xac,
0x80, 0x6c,
0x81, 0x6c,
0x80, 0xec,
0x81, 0xec,
0x80, 0x1c,
0x81, 0x1c,
0x80, 0x9c,
0x81, 0x9c,
0x80, 0x5c,
0x81, 0x5c,
0x80, 0xdc,
0x81, 0xdc,
0x80, 0x3c,
0x81, 0x3c,
0x80, 0xbc,
0x81, 0xbc,
0x80, 0x7c,
0x81, 0x7c,
0x80, 0xfc,
0x81, 0xfc,
0x80, 0x02,
0x81, 0x02,
0x80, 0x82,
0x81, 0x82,
0x80, 0x42,
0x81, 0x42,
0x80, 0xc2,
0x81, 0xc2,
0x80, 0x22,
0x81, 0x22,
0x80, 0xa2,
0x81, 0xa2,
0x80, 0x62,
0x81, 0x62,
0x80, 0xe2,
0x81, 0xe2,
0x80, 0x12,
0x81, 0x12,
0x80, 0x92,
0x81, 0x92,
0x80, 0x52,
0x81, 0x52,
0x80, 0xd2,
0x81, 0xd2,
0x80, 0x32,
0x81, 0x32,
0x80, 0xb2,
0x81, 0xb2,
0x80, 0x72,
0x81, 0x72,
0x80, 0xf2,
0x81, 0xf2,
0x80, 0x0a,
0x81, 0x0a,
0x80, 0x8a,
0x81, 0x8a,
0x80, 0x4a,
0x81, 0x4a,
0x80, 0xca,
0x81, 0xca,
0x80, 0x2a,
0x81, 0x2a,
0x80, 0xaa,
0x81, 0xaa,
0x80, 0x6a,
0x81, 0x6a,
0x80, 0xea,
0x81, 0xea,
0x80, 0x1a,
0x81, 0x1a,
0x80, 0x9a,
0x81, 0x9a,
0x80, 0x5a,
0x81, 0x5a,
0x80, 0xda,
0x81, 0xda,
0x80, 0x3a,
0x81, 0x3a,
0x80, 0xba,
0x81, 0xba,
0x80, 0x7a,
0x81, 0x7a,
0x80, 0xfa,
0x81, 0xfa,
0x80, 0x06,
0x81, 0x06,
0x80, 0x86,
0x81, 0x86,
0x80, 0x46,
0x81, 0x46,
0x80, 0xc6,
0x81, 0xc6,
0x80, 0x26,
0x81, 0x26,
0x80, 0xa6,
0x81, 0xa6,
0x80, 0x66,
0x81, 0x66,
0x80, 0xe6,
0x81, 0xe6,
0x80, 0x16,
0x81, 0x16,
0x80, 0x96,
0x81, 0x96,
0x80, 0x56,
0x81, 0x56,
0x80, 0xd6,
0x81, 0xd6,
0x80, 0x36,
0x81, 0x36,
0x80, 0xb6,
0x81, 0xb6,
0x80, 0x76,
0x81, 0x76,
0x80, 0xf6,
0x81, 0xf6,
0x80, 0x0e,
0x81, 0x0e,
0x80, 0x8e,
0x81, 0x8e,
0x80, 0x4e,
0x81, 0x4e,
0x80, 0xce,
0x81, 0xce,
0x80, 0x2e,
0x81, 0x2e,
0x80, 0xae,
0x81, 0xae,
0x80, 0x6e,
0x81, 0x6e,
0x80, 0xee,
0x81, 0xee,
0x80, 0x1e,
0x81, 0x1e,
0x80, 0x9e,
0x81, 0x9e,
0x80, 0x5e,
0x81, 0x5e,
0x80, 0xde,
0x81, 0xde,
0x80, 0x3e,
0x81, 0x3e,
0x80, 0xbe,
0x81, 0xbe,
0x80, 0x7e,
0x81, 0x7e,
0x80, 0xfe,
0x81, 0xfe,
0x80, 0x01,
0x81, 0x01,
0x80, 0x81,
0x81, 0x81,
0x80, 0x41,
0x81, 0x41,
0x80, 0xc1,
0x81, 0xc1,
0x80, 0x21,
0x81, 0x21,
0x80, 0xa1,
0x81, 0xa1,
0x80, 0x61,
0x81, 0x61,
0x80, 0xe1,
0x81, 0xe1,
0x80, 0x11,
0x81, 0x11,
0x80, 0x91,
0x81, 0x91,
0x80, 0x51,
0x81, 0x51,
0x80, 0xd1,
0x81, 0xd1,
0x80, 0x31,
0x81, 0x31,
0x80, 0xb1,
0x81, 0xb1,
0x80, 0x71,
0x81, 0x71,
0x80, 0xf1,
0x81, 0xf1,
0x80, 0x09,
0x81, 0x09,
0x80, 0x89,
0x81, 0x89,
0x80, 0x49,
0x81, 0x49,
0x80, 0xc9,
0x81, 0xc9,
0x80, 0x29,
0x81, 0x29,
0x80, 0xa9,
0x81, 0xa9,
0x80, 0x69,
0x81, 0x69,
0x80, 0xe9
};
typedef struct
{
SPI_HandleTypeDef *spi;
int row;
int column;
} lcd_t;
static lcd_t lcd;
static SPI_HandleTypeDef spi_port;
void lcd_clear(
bool invert
)
{
uint8_t invert_mask = invert ? 0x40 : 0x00;
uint8_t clear_msg[2] = { 0x20 | invert_mask, 0x00 };
HAL_SPI_Transmit(lcd.spi, clear_msg, 2, 1000);
}
void lcd_init(bool clear)
{
SPI_InitTypeDef *init;
TIM_MasterConfigTypeDef sMasterConfig = { 0 };
TIM_OC_InitTypeDef sConfigOC = { 0 };
GPIO_InitTypeDef GPIO_InitStruct = { 0 };
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOE_CLK_ENABLE();
__HAL_RCC_SPI1_CLK_ENABLE();
GPIO_InitStruct.Pin = LCD_NSS_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF5_SPI1;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
GPIO_InitStruct.Pin = LCD_SPI_SCK;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF5_SPI1;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
GPIO_InitStruct.Pin = LCD_SPI_MOSI;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF5_SPI1;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
lcd.spi = &spi_port;
lcd.spi->Instance = SPI1;
init = &lcd.spi->Init;
// init the SPI bus
init->Mode = SPI_MODE_MASTER;
//
// These configuration values are from the IDE
// test code.
//
init->BaudRatePrescaler = SPI_BAUDRATEPRESCALER_4;
init->CLKPolarity = SPI_POLARITY_HIGH;
init->CLKPhase = SPI_PHASE_1EDGE;
init->Direction = SPI_DIRECTION_2LINES_TXONLY;
init->DataSize = SPI_DATASIZE_8BIT;
init->NSS = SPI_NSS_HARD_OUTPUT; // SPI_NSS_SOFT;
init->FirstBit = SPI_FIRSTBIT_MSB;
init->TIMode = SPI_TIMODE_DISABLED;
init->CRCCalculation = SPI_CRCCALCULATION_DISABLED;
init->CRCPolynomial = 0;
// === These are in the cubeIDE init code but not the MP LCD module make_new init code
init->NSSPMode = SPI_NSS_PULSE_ENABLE;
init->NSSPolarity = SPI_NSS_POLARITY_HIGH;
init->FifoThreshold = SPI_FIFO_THRESHOLD_01DATA;
init->TxCRCInitializationPattern = SPI_CRC_INITIALIZATION_ALL_ZERO_PATTERN;
init->RxCRCInitializationPattern = SPI_CRC_INITIALIZATION_ALL_ZERO_PATTERN;
init->MasterSSIdleness = SPI_MASTER_SS_IDLENESS_01CYCLE;
init->MasterInterDataIdleness = SPI_MASTER_INTERDATA_IDLENESS_00CYCLE;
init->MasterReceiverAutoSusp = SPI_MASTER_RX_AUTOSUSP_DISABLE;
init->MasterKeepIOState = SPI_MASTER_KEEP_IO_STATE_DISABLE;
init->IOSwap = SPI_IO_SWAP_DISABLE;
HAL_SPI_Init(lcd.spi);
// Code to configure Timer 1 using code similar to the MP LED module PWM timer code.
__TIM1_CLK_ENABLE();
lcd_refresh_timer_handle.Instance = TIM1;
lcd_refresh_timer_handle.Init.Prescaler = 128; // TIM runs at 1MHz
lcd_refresh_timer_handle.Init.CounterMode = TIM_COUNTERMODE_UP;
lcd_refresh_timer_handle.Init.Period = 65535;
lcd_refresh_timer_handle.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
lcd_refresh_timer_handle.Init.RepetitionCounter = 0;
lcd_refresh_timer_handle.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
HAL_TIM_PWM_Init(&lcd_refresh_timer_handle);
sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
sMasterConfig.MasterOutputTrigger2 = TIM_TRGO2_RESET;
sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
HAL_TIMEx_MasterConfigSynchronization(&lcd_refresh_timer_handle, &sMasterConfig);
// PWM configuration
sConfigOC.OCMode = TIM_OCMODE_PWM1;
sConfigOC.Pulse = 32768;
sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
sConfigOC.OCNPolarity = TIM_OCNPOLARITY_HIGH;
sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET;
sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_RESET;
HAL_TIM_PWM_ConfigChannel(&lcd_refresh_timer_handle, &sConfigOC, TIM_CHANNEL_1);
GPIO_InitStruct.Pin = GPIO_PIN_8;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
GPIO_InitStruct.Alternate = GPIO_AF1_TIM1;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
if (clear) {
lcd_clear(false);
}
// Start timer to refresh the SRAM inside the LCD
HAL_TIM_PWM_Start(&lcd_refresh_timer_handle, TIM_CHANNEL_1);
}
void lcd_deinit(void)
{
__HAL_RCC_SPI1_FORCE_RESET();
__HAL_RCC_SPI1_RELEASE_RESET();
__HAL_RCC_SPI1_CLK_DISABLE();
}
void lcd_update(
uint8_t* screen_data,
bool invert
)
{
for (int y = 0; y < SCREEN_HEIGHT; y++) {
// Use lookup table to set header bytes
// TODO: Can I just set this once and avoid the overhead each frame?
screen.lines[y].header[0] = header_lookup[y * 2];
screen.lines[y].header[1] = header_lookup[y * 2 + 1];
// Set inversion flag if requested -- doesn't work for us for some reason
// if (invert) {
// screen.lines[y].header[0] |= 0x40;
// }
// Copy data bytes for this line
if (invert) {
// Invert pixels 16 bits at a time.
// This works because our screen width in bytes is divisible by 2 (but not by 4)
for (int i = 0; i < SCREEN_BYTES_PER_LINE / 2; i++) {
uint16_t* psrc = (uint16_t*)&screen_data[y * SCREEN_BYTES_PER_LINE];
screen.lines[y].pixels_u16[i] = ~psrc[i];
}
} else {
memcpy(screen.lines[y].pixels, &screen_data[y * SCREEN_BYTES_PER_LINE], SCREEN_BYTES_PER_LINE);
}
}
// Write the screen data to the screen all at once -- this is much
// faster than separate writes for each line
HAL_SPI_Transmit(lcd.spi, (uint8_t*)&screen, sizeof(screen), 1000);
}
// Used to prepare a screen line for updating with lcd_update_line_range()
void lcd_prebuffer_line(uint16_t y, uint8_t* line_data, bool invert) {
if (y >= SCREEN_HEIGHT) {
return;
}
screen.lines[y].header[0] = header_lookup[y * 2];
screen.lines[y].header[1] = header_lookup[y * 2 + 1];
if (invert) {
// Invert pixels 16 bits at a time.
// This works because our screen width in bytes is divisible by 2 (but not by 4)
uint16_t* psrc = (uint16_t*)line_data;
for (int i = 0; i < SCREEN_BYTES_PER_LINE / 2; i++) {
screen.lines[y].pixels_u16[i] = ~psrc[i];
}
} else {
// Copy data bytes for this line
memcpy(screen.lines[y].pixels, line_data, SCREEN_BYTES_PER_LINE);
}
}
// Update a subset of lines on the LCD
// This is used for updating progress bars and busy bars without need a full screen redraw.
void lcd_update_line_range(uint16_t y_start, uint16_t y_end) {
if (y_start >= SCREEN_HEIGHT || y_end >= SCREEN_HEIGHT) {
return;
}
HAL_SPI_Transmit(lcd.spi, (uint8_t*)&screen.lines[y_start], sizeof(ScreenLine) * (y_end - y_start + 1), 1000);
}