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
|
#include "s6d1121_lld.h"
#ifdef LCD_USE_S6D1121
#define LCD_RST_LOW palClearPad(LCD_RST_GPIO, LCD_RST_PIN)
#define LCD_RST_HIGH palSetPad(LCD_RST_GPIO, LCD_RST_PIN)
#define LCD_CS_LOW palClearPad(LCD_CS_GPIO, LCD_CS_PIN)
#define LCD_CS_HIGH palSetPad(LCD_CS_GPIO, LCD_CS_PIN)
#define LCD_RS_LOW palClearPad(LCD_RS_GPIO, LCD_RS_PIN)
#define LCD_RS_HIGH palSetPad(LCD_RS_GPIO, LCD_RS_PIN)
#define LCD_RD_LOW palClearPad(LCD_RD_GPIO, LCD_RD_PIN)
#define LCD_RD_HIGH palSetPad(LCD_RD_GPIO, LCD_RD_PIN)
#define LCD_WR_LOW palClearPad(LCD_WR_GPIO, LCD_WR_PIN)
#define LCD_WR_HIGH palSetPad(LCD_WR_GPIO, LCD_WR_PIN)
#define LCD_BL_LOW palClearPad(LCD_BL_GPIO, LCD_BL_PIN)
#define LCD_BL_HIGH palSetPad(LCD_BL_GPIO, LCD_BL_PIN)
static uint8_t orientation;
extern uint16_t lcd_width, lcd_height;
inline void lld_lcddelay(void)
{
asm volatile ("nop");
asm volatile ("nop");
}
inline void lld_lcdwrite(uint16_t db)
{
LCD_D4_GPIO->BSRR.W=((~db&0xFFF0)<<16)|(db&0xFFF0);
LCD_D0_GPIO->BSRR.W=((~db&0x000F)<<16)|(db&0x000F);
LCD_WR_LOW;
lld_lcddelay();
LCD_WR_HIGH;
}
static __inline uint16_t lcdReadData(void) {
uint16_t value=0;
LCD_RS_HIGH;
LCD_WR_HIGH;
LCD_RD_LOW;
#ifndef STM32F4XX
// change pin mode to digital input
LCD_DATA_PORT->CRH = 0x47444444;
LCD_DATA_PORT->CRL = 0x47444444;
#else
#endif
// value = palReadPort(LCD_DATA_PORT); // dummy
// value = palReadPort(LCD_DATA_PORT);
#ifndef STM32F4XX
// change pin mode back to digital output
LCD_DATA_PORT->CRH = 0x33333333;
LCD_DATA_PORT->CRL = 0x33333333;
#else
#endif
LCD_RD_HIGH;
return value;
}
static __inline uint16_t lcdReadReg(uint16_t lcdReg) {
uint16_t lcdRAM;
LCD_CS_LOW;
LCD_RS_LOW;
lld_lcdwrite(lcdReg);
LCD_RS_HIGH;
lcdRAM = lcdReadData();
LCD_CS_HIGH;
return lcdRAM;
}
void lcdWriteIndex(uint16_t lcdReg) {
LCD_RS_LOW;
lld_lcdwrite(lcdReg);
LCD_RS_HIGH;
}
void lcdWriteData(uint16_t lcdData) {
lld_lcdwrite(lcdData);
}
void lcdWriteReg(uint16_t lcdReg, uint16_t lcdRegValue) {
LCD_CS_LOW;
lcdWriteIndex(lcdReg);
lcdWriteData(lcdRegValue);
LCD_CS_HIGH;
}
void lld_lcdInit(void) {
// ChibiOS HAL has a nice and precise delay function,
// halPolledDelay(US2RTT(x)); or halPolledDelay(MS2RTT(x));
// Why Not use it?
// IO Default Configurations
palSetPadMode(LCD_CS_GPIO, LCD_CS_PIN, PAL_MODE_OUTPUT_PUSHPULL | PAL_STM32_OSPEED_HIGHEST);
palSetPadMode(LCD_WR_GPIO, LCD_WR_PIN, PAL_MODE_OUTPUT_PUSHPULL | PAL_STM32_OSPEED_HIGHEST);
palSetPadMode(LCD_RD_GPIO, LCD_RD_PIN, PAL_MODE_OUTPUT_PUSHPULL | PAL_STM32_OSPEED_HIGHEST);
palSetPadMode(LCD_RST_GPIO, LCD_RST_PIN, PAL_MODE_OUTPUT_PUSHPULL | PAL_STM32_OSPEED_HIGHEST);
palSetPadMode(LCD_RS_GPIO, LCD_RS_PIN, PAL_MODE_OUTPUT_PUSHPULL | PAL_STM32_OSPEED_HIGHEST);
palSetPadMode(LCD_BL_GPIO, LCD_BL_PIN, PAL_MODE_OUTPUT_PUSHPULL | PAL_STM32_OSPEED_HIGHEST);
palSetGroupMode(LCD_D0_GPIO, 0x0000000F, 0, PAL_MODE_OUTPUT_PUSHPULL | PAL_STM32_OSPEED_HIGHEST);
palSetGroupMode(LCD_D4_GPIO, 0x0000FFF0, 0, PAL_MODE_OUTPUT_PUSHPULL | PAL_STM32_OSPEED_HIGHEST);
LCD_CS_HIGH;
LCD_RST_HIGH;
LCD_RD_HIGH;
LCD_WR_HIGH;
LCD_BL_LOW;
// A Good idea to reset the module before using
LCD_RST_LOW;
halPolledDelay(MS2RTT(2));
LCD_RST_HIGH; // Hardware Reset
halPolledDelay(MS2RTT(2));
lcdWriteReg(0x11,0x2004);
lcdWriteReg(0x13,0xCC00);
lcdWriteReg(0x15,0x2600);
lcdWriteReg(0x14,0x252A);
lcdWriteReg(0x12,0x0033);
lcdWriteReg(0x13,0xCC04);
halPolledDelay(MS2RTT(1));
lcdWriteReg(0x13,0xCC06);
halPolledDelay(MS2RTT(1));
lcdWriteReg(0x13,0xCC4F);
halPolledDelay(MS2RTT(1));
lcdWriteReg(0x13,0x674F);
lcdWriteReg(0x11,0x2003);
halPolledDelay(MS2RTT(1));
// Gamma Setting
lcdWriteReg(0x30,0x2609);
lcdWriteReg(0x31,0x242C);
lcdWriteReg(0x32,0x1F23);
lcdWriteReg(0x33,0x2425);
lcdWriteReg(0x34,0x2226);
lcdWriteReg(0x35,0x2523);
lcdWriteReg(0x36,0x1C1A);
lcdWriteReg(0x37,0x131D);
lcdWriteReg(0x38,0x0B11);
lcdWriteReg(0x39,0x1210);
lcdWriteReg(0x3A,0x1315);
lcdWriteReg(0x3B,0x3619);
lcdWriteReg(0x3C,0x0D00);
lcdWriteReg(0x3D,0x000D);
lcdWriteReg(0x16,0x0007);
lcdWriteReg(0x02,0x0013);
lcdWriteReg(0x03,0x0003);
lcdWriteReg(0x01,0x0127);
halPolledDelay(MS2RTT(1));
lcdWriteReg(0x08,0x0303);
lcdWriteReg(0x0A,0x000B);
lcdWriteReg(0x0B,0x0003);
lcdWriteReg(0x0C,0x0000);
lcdWriteReg(0x41,0x0000);
lcdWriteReg(0x50,0x0000);
lcdWriteReg(0x60,0x0005);
lcdWriteReg(0x70,0x000B);
lcdWriteReg(0x71,0x0000);
lcdWriteReg(0x78,0x0000);
lcdWriteReg(0x7A,0x0000);
lcdWriteReg(0x79,0x0007);
lcdWriteReg(0x07,0x0051);
halPolledDelay(MS2RTT(1));
lcdWriteReg(0x07,0x0053);
lcdWriteReg(0x79,0x0000);
}
void lld_lcdSetCursor(uint16_t x, uint16_t y) {
if(PORTRAIT) {
lcdWriteReg(0x0020, x);
lcdWriteReg(0x0021, y);
} else if(LANDSCAPE) {
lcdWriteReg(0x0020, y);
lcdWriteReg(0x0021, x);
}
}
// Do not use now, will be fixed in future
void lld_lcdSetOrientation(uint8_t newOrientation) {
orientation = newOrientation;
switch(orientation) {
case portrait:
lcdWriteReg(0x03, 0x03);
lcd_height = SCREEN_HEIGHT;
lcd_width = SCREEN_WIDTH;
break;
case landscape:
// Not implemented yet
lcd_height = SCREEN_WIDTH;
lcd_width = SCREEN_HEIGHT;
break;
case portraitInv:
// Not implemented yet
lcd_height = SCREEN_HEIGHT;
lcd_width = SCREEN_WIDTH;
break;
case landscapeInv:
// Not implemented yet
lcd_height = SCREEN_WIDTH;
lcd_width = SCREEN_HEIGHT;
break;
}
}
void lld_lcdSetWindow(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1) {
lld_lcdSetCursor(x0, y0);
switch(lcdGetOrientation()) {
case portrait:
lcdWriteReg(0x47, ((x0+x1-1) << 8) | x0);
lcdWriteReg(0x48, y0);
lcdWriteReg(0x47, y0+y1-1);
break;
case landscape:
lcdWriteReg(0x47, ((y0+y1-1) << 8) | y1);
lcdWriteReg(0x48, x0);
lcdWriteReg(0x47, x0+x1-1);
break;
case portraitInv:
lcdWriteReg(0x47, ((x0+x1-1) << 8) | x0);
lcdWriteReg(0x48, y0);
lcdWriteReg(0x47, y0+y1-1);
break;
case landscapeInv:
lcdWriteReg(0x47, ((y0+y1-1) << 8) | y1);
lcdWriteReg(0x48, x0);
lcdWriteReg(0x47, x0+x1-1);
break;
}
}
void lld_lcdClear(uint16_t color) {
uint32_t index = 0;
lld_lcdSetCursor(0,0);
LCD_CS_LOW;
lcdWriteIndex(0x0022);
for(index = 0; index < SCREEN_WIDTH * SCREEN_HEIGHT; index++)
lcdWriteData(color);
LCD_CS_HIGH;
}
// Do not use!
uint16_t lld_lcdGetPixelColor(uint16_t x, uint16_t y) {
uint16_t dummy;
lld_lcdSetCursor(x,y);
LCD_CS_LOW;
lcdWriteIndex(0x0022);
dummy = lcdReadData();
dummy = lcdReadData();
LCD_CS_HIGH;
return dummy;
}
void lld_lcdDrawPixel(uint16_t x, uint16_t y, uint16_t color) {
lld_lcdSetCursor(x, y);
lcdWriteReg(0x0022, color);
}
uint16_t lld_lcdGetOrientation(void) {
return orientation;
}
uint16_t lld_lcdGetHeight(void) {
return lcd_height;
}
uint16_t lld_lcdGetWidth(void) {
return lcd_width;
}
#endif
|
