forked from adafruit/Adafruit-ST7735-Library
-
Notifications
You must be signed in to change notification settings - Fork 1
/
Adafruit_ST7735.cpp
executable file
·317 lines (290 loc) · 12.9 KB
/
Adafruit_ST7735.cpp
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
#include "Adafruit_ST77xx.h"
#include "Adafruit_ST7735.h"
// Rather than a bazillion writecommand() and writedata() calls, screen
// initialization commands and arguments are organized in these tables
// stored in PROGMEM. 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.
static const uint8_t PROGMEM
Bcmd[] = { // Initialization commands for 7735B screens
18, // 18 commands in list:
ST77XX_SWRESET, ST_CMD_DELAY, // 1: Software reset, no args, w/delay
50, // 50 ms delay
ST77XX_SLPOUT , ST_CMD_DELAY, // 2: Out of sleep mode, no args, w/delay
255, // 255 = 500 ms delay
ST77XX_COLMOD , 1+ST_CMD_DELAY, // 3: Set color mode, 1 arg + delay:
0x05, // 16-bit color
10, // 10 ms delay
ST7735_FRMCTR1, 3+ST_CMD_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
ST77XX_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+ST_CMD_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+ST_CMD_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+ST_CMD_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
ST77XX_CASET , 4 , // 15: Column addr set, 4 args, no delay:
0x00, 0x02, // XSTART = 2
0x00, 0x81, // XEND = 129
ST77XX_RASET , 4 , // 16: Row addr set, 4 args, no delay:
0x00, 0x02, // XSTART = 1
0x00, 0x81, // XEND = 160
ST77XX_NORON , ST_CMD_DELAY, // 17: Normal display on, no args, w/delay
10, // 10 ms delay
ST77XX_DISPON , ST_CMD_DELAY, // 18: Main screen turn on, no args, w/delay
255 }, // 255 = 500 ms delay
Rcmd1[] = { // Init for 7735R, part 1 (red or green tab)
15, // 15 commands in list:
ST77XX_SWRESET, ST_CMD_DELAY, // 1: Software reset, 0 args, w/delay
150, // 150 ms delay
ST77XX_SLPOUT , ST_CMD_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,
ST77XX_INVOFF , 0 , // 13: Don't invert display, no args, no delay
ST77XX_MADCTL , 1 , // 14: Memory access control (directions), 1 arg:
0xC8, // row addr/col addr, bottom to top refresh
ST77XX_COLMOD , 1 , // 15: set color mode, 1 arg, no delay:
0x05 }, // 16-bit color
Rcmd2green[] = { // Init for 7735R, part 2 (green tab only)
2, // 2 commands in list:
ST77XX_CASET , 4 , // 1: Column addr set, 4 args, no delay:
0x00, 0x02, // XSTART = 0
0x00, 0x7F+0x02, // XEND = 127
ST77XX_RASET , 4 , // 2: Row addr set, 4 args, no delay:
0x00, 0x01, // XSTART = 0
0x00, 0x9F+0x01 }, // XEND = 159
Rcmd2red[] = { // Init for 7735R, part 2 (red tab only)
2, // 2 commands in list:
ST77XX_CASET , 4 , // 1: Column addr set, 4 args, no delay:
0x00, 0x00, // XSTART = 0
0x00, 0x7F, // XEND = 127
ST77XX_RASET , 4 , // 2: Row addr set, 4 args, no delay:
0x00, 0x00, // XSTART = 0
0x00, 0x9F }, // XEND = 159
Rcmd2green144[] = { // Init for 7735R, part 2 (green 1.44 tab)
2, // 2 commands in list:
ST77XX_CASET , 4 , // 1: Column addr set, 4 args, no delay:
0x00, 0x00, // XSTART = 0
0x00, 0x7F, // XEND = 127
ST77XX_RASET , 4 , // 2: Row addr set, 4 args, no delay:
0x00, 0x00, // XSTART = 0
0x00, 0x7F }, // XEND = 127
Rcmd2green160x80[] = { // Init for 7735R, part 2 (mini 160x80)
2, // 2 commands in list:
ST77XX_CASET , 4 , // 1: Column addr set, 4 args, no delay:
0x00, 0x00, // XSTART = 0
0x00, 0x7F, // XEND = 79
ST77XX_RASET , 4 , // 2: Row addr set, 4 args, no delay:
0x00, 0x00, // XSTART = 0
0x00, 0x9F }, // XEND = 159
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,
ST77XX_NORON , ST_CMD_DELAY, // 3: Normal display on, no args, w/delay
10, // 10 ms delay
ST77XX_DISPON , ST_CMD_DELAY, // 4: Main screen turn on, no args w/delay
100 }; // 100 ms delay
/**************************************************************************/
/*!
@brief Initialization code common to all ST7735B displays
*/
/**************************************************************************/
void Adafruit_ST7735::initB(void) {
commonInit(Bcmd);
setRotation(0);
}
/**************************************************************************/
/*!
@brief Initialization code common to all ST7735R displays
@param options Tab color from adafruit purchase
*/
/**************************************************************************/
void Adafruit_ST7735::initR(uint8_t options) {
commonInit(Rcmd1);
if(options == INITR_GREENTAB) {
displayInit(Rcmd2green);
_colstart = 2;
_rowstart = 1;
} else if(options == INITR_144GREENTAB) {
_height = ST7735_TFTHEIGHT_128;
_width = ST7735_TFTWIDTH_128;
displayInit(Rcmd2green144);
_colstart = 2;
_rowstart = 1;
} else if(options == INITR_MINI160x80) {
_height = ST7735_TFTHEIGHT_160;
_width = ST7735_TFTWIDTH_80;
displayInit(Rcmd2green160x80);
_colstart = 24;
_rowstart = 0;
} else {
// colstart, rowstart left at default '0' values
displayInit(Rcmd2red);
}
displayInit(Rcmd3);
// if black, change MADCTL color filter
if ((options == INITR_BLACKTAB) || (options == INITR_MINI160x80)) {
startWrite();
writeCommand(ST77XX_MADCTL);
spiWrite(0xC0);
endWrite();
}
tabcolor = options;
setRotation(0);
}
/**************************************************************************/
/*!
@brief Set origin of (0,0) and orientation of TFT display
@param m The index for rotation, from 0-3 inclusive
*/
/**************************************************************************/
void Adafruit_ST7735::setRotation(uint8_t m) {
uint8_t madctl = 0;
rotation = m % 4; // can't be higher than 3
switch (rotation) {
case 0:
if ((tabcolor == INITR_BLACKTAB) || (tabcolor == INITR_MINI160x80)) {
madctl = ST77XX_MADCTL_MX | ST77XX_MADCTL_MY | ST77XX_MADCTL_RGB;
} else {
madctl = ST77XX_MADCTL_MX | ST77XX_MADCTL_MY | ST7735_MADCTL_BGR;
}
if (tabcolor == INITR_144GREENTAB) {
_height = ST7735_TFTHEIGHT_128;
_width = ST7735_TFTWIDTH_128;
} else if (tabcolor == INITR_MINI160x80) {
_height = ST7735_TFTHEIGHT_160;
_width = ST7735_TFTWIDTH_80;
} else {
_height = ST7735_TFTHEIGHT_160;
_width = ST7735_TFTWIDTH_128;
}
_xstart = _colstart;
_ystart = _rowstart;
break;
case 1:
if ((tabcolor == INITR_BLACKTAB) || (tabcolor == INITR_MINI160x80)) {
madctl = ST77XX_MADCTL_MY | ST77XX_MADCTL_MV | ST77XX_MADCTL_RGB;
} else {
madctl = ST77XX_MADCTL_MY | ST77XX_MADCTL_MV | ST7735_MADCTL_BGR;
}
if (tabcolor == INITR_144GREENTAB) {
_width = ST7735_TFTHEIGHT_128;
_height = ST7735_TFTWIDTH_128;
} else if (tabcolor == INITR_MINI160x80) {
_width = ST7735_TFTHEIGHT_160;
_height = ST7735_TFTWIDTH_80;
} else {
_width = ST7735_TFTHEIGHT_160;
_height = ST7735_TFTWIDTH_128;
}
_ystart = _colstart;
_xstart = _rowstart;
break;
case 2:
if ((tabcolor == INITR_BLACKTAB) || (tabcolor == INITR_MINI160x80)) {
madctl = ST77XX_MADCTL_RGB;
} else {
madctl = ST7735_MADCTL_BGR;
}
if (tabcolor == INITR_144GREENTAB) {
_height = ST7735_TFTHEIGHT_128;
_width = ST7735_TFTWIDTH_128;
} else if (tabcolor == INITR_MINI160x80) {
_height = ST7735_TFTHEIGHT_160;
_width = ST7735_TFTWIDTH_80;
} else {
_height = ST7735_TFTHEIGHT_160;
_width = ST7735_TFTWIDTH_128;
}
_xstart = _colstart;
_ystart = _rowstart;
break;
case 3:
if ((tabcolor == INITR_BLACKTAB) || (tabcolor == INITR_MINI160x80)) {
madctl = ST77XX_MADCTL_MX | ST77XX_MADCTL_MV | ST77XX_MADCTL_RGB;
} else {
madctl = ST77XX_MADCTL_MX | ST77XX_MADCTL_MV | ST7735_MADCTL_BGR;
}
if (tabcolor == INITR_144GREENTAB) {
_width = ST7735_TFTHEIGHT_128;
_height = ST7735_TFTWIDTH_128;
} else if (tabcolor == INITR_MINI160x80) {
_width = ST7735_TFTHEIGHT_160;
_height = ST7735_TFTWIDTH_80;
} else {
_width = ST7735_TFTHEIGHT_160;
_height = ST7735_TFTWIDTH_128;
}
_ystart = _colstart;
_xstart = _rowstart;
break;
}
startWrite();
writeCommand(ST77XX_MADCTL);
spiWrite(madctl);
endWrite();
}