-
Notifications
You must be signed in to change notification settings - Fork 303
/
Adafruit_ST7789.cpp
174 lines (157 loc) · 6.58 KB
/
Adafruit_ST7789.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
#include "Adafruit_ST7789.h"
#include "Adafruit_ST77xx.h"
// CONSTRUCTORS ************************************************************
/*!
@brief Instantiate Adafruit ST7789 driver with software SPI
@param cs Chip select pin #
@param dc Data/Command pin #
@param mosi SPI MOSI pin #
@param sclk SPI Clock pin #
@param rst Reset pin # (optional, pass -1 if unused)
*/
Adafruit_ST7789::Adafruit_ST7789(int8_t cs, int8_t dc, int8_t mosi, int8_t sclk,
int8_t rst)
: Adafruit_ST77xx(240, 320, cs, dc, mosi, sclk, rst) {}
/*!
@brief Instantiate Adafruit ST7789 driver with hardware SPI
@param cs Chip select pin #
@param dc Data/Command pin #
@param rst Reset pin # (optional, pass -1 if unused)
*/
Adafruit_ST7789::Adafruit_ST7789(int8_t cs, int8_t dc, int8_t rst)
: Adafruit_ST77xx(240, 320, cs, dc, rst) {}
#if !defined(ESP8266)
/*!
@brief Instantiate Adafruit ST7789 driver with selectable hardware SPI
@param spiClass Pointer to an SPI device to use (e.g. &SPI1)
@param cs Chip select pin #
@param dc Data/Command pin #
@param rst Reset pin # (optional, pass -1 if unused)
*/
Adafruit_ST7789::Adafruit_ST7789(SPIClass *spiClass, int8_t cs, int8_t dc,
int8_t rst)
: Adafruit_ST77xx(240, 320, spiClass, cs, dc, rst) {}
#endif // end !ESP8266
// SCREEN INITIALIZATION ***************************************************
// 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.
// clang-format off
static const uint8_t PROGMEM
generic_st7789[] = { // Init commands for 7789 screens
9, // 9 commands in list:
ST77XX_SWRESET, ST_CMD_DELAY, // 1: Software reset, no args, w/delay
150, // ~150 ms delay
ST77XX_SLPOUT , ST_CMD_DELAY, // 2: Out of sleep mode, no args, w/delay
10, // 10 ms delay
ST77XX_COLMOD , 1+ST_CMD_DELAY, // 3: Set color mode, 1 arg + delay:
0x55, // 16-bit color
10, // 10 ms delay
ST77XX_MADCTL , 1, // 4: Mem access ctrl (directions), 1 arg:
0x08, // Row/col addr, bottom-top refresh
ST77XX_CASET , 4, // 5: Column addr set, 4 args, no delay:
0x00,
0, // XSTART = 0
0,
240, // XEND = 240
ST77XX_RASET , 4, // 6: Row addr set, 4 args, no delay:
0x00,
0, // YSTART = 0
320>>8,
320&0xFF, // YEND = 320
ST77XX_INVON , ST_CMD_DELAY, // 7: hack
10,
ST77XX_NORON , ST_CMD_DELAY, // 8: Normal display on, no args, w/delay
10, // 10 ms delay
ST77XX_DISPON , ST_CMD_DELAY, // 9: Main screen turn on, no args, delay
10 }; // 10 ms delay
// clang-format on
/**************************************************************************/
/*!
@brief Initialization code common to all ST7789 displays
@param width Display width
@param height Display height
@param mode SPI data mode; one of SPI_MODE0, SPI_MODE1, SPI_MODE2
or SPI_MODE3 (do NOT pass the numbers 0,1,2 or 3 -- use
the defines only, the values are NOT the same!)
*/
/**************************************************************************/
void Adafruit_ST7789::init(uint16_t width, uint16_t height, uint8_t mode) {
// Save SPI data mode. commonInit() calls begin() (in Adafruit_ST77xx.cpp),
// which in turn calls initSPI() (in Adafruit_SPITFT.cpp), passing it the
// value of spiMode. It's done this way because begin() really should not
// be modified at this point to accept an SPI mode -- it's a virtual
// function required in every Adafruit_SPITFT subclass and would require
// updating EVERY such library...whereas, at the moment, we know that
// certain ST7789 displays are the only thing that may need a non-default
// SPI mode, hence this roundabout approach...
spiMode = mode;
// (Might get added similarly to other display types as needed on a
// case-by-case basis.)
commonInit(NULL);
if (width == 240 && height == 240) {
// 1.3", 1.54" displays (right justified)
_rowstart = (320 - height);
_rowstart2 = 0;
_colstart = _colstart2 = (240 - width);
} else if (width == 135 && height == 240) {
// 1.14" display (centered, with odd size)
_rowstart = _rowstart2 = (int)((320 - height) / 2);
// This is the only device currently supported device that has different
// values for _colstart & _colstart2. You must ensure that the extra
// pixel lands in _colstart and not in _colstart2
_colstart = (int)((240 - width + 1) / 2);
_colstart2 = (int)((240 - width) / 2);
} else {
// 1.47", 1.69, 1.9", 2.0" displays (centered)
_rowstart = _rowstart2 = (int)((320 - height) / 2);
_colstart = _colstart2 = (int)((240 - width) / 2);
}
windowWidth = width;
windowHeight = height;
displayInit(generic_st7789);
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_ST7789::setRotation(uint8_t m) {
uint8_t madctl = 0;
rotation = m & 3; // can't be higher than 3
switch (rotation) {
case 0:
madctl = ST77XX_MADCTL_MX | ST77XX_MADCTL_MY | ST77XX_MADCTL_RGB;
_xstart = _colstart;
_ystart = _rowstart;
_width = windowWidth;
_height = windowHeight;
break;
case 1:
madctl = ST77XX_MADCTL_MY | ST77XX_MADCTL_MV | ST77XX_MADCTL_RGB;
_xstart = _rowstart;
_ystart = _colstart2;
_height = windowWidth;
_width = windowHeight;
break;
case 2:
madctl = ST77XX_MADCTL_RGB;
_xstart = _colstart2;
_ystart = _rowstart2;
_width = windowWidth;
_height = windowHeight;
break;
case 3:
madctl = ST77XX_MADCTL_MX | ST77XX_MADCTL_MV | ST77XX_MADCTL_RGB;
_xstart = _rowstart2;
_ystart = _colstart;
_height = windowWidth;
_width = windowHeight;
break;
}
sendCommand(ST77XX_MADCTL, &madctl, 1);
}