├── .vscode
└── settings.json
├── LICENSE
├── README.md
├── ST7789
├── fonts.c
├── fonts.h
├── st7789.c
└── st7789.h
└── fig
├── draw_line.png
├── fill_dma.png
├── fill_normal.png
└── spi.jpg
/.vscode/settings.json:
--------------------------------------------------------------------------------
1 | {
2 | "files.associations": {
3 | "st7789.h": "c"
4 | }
5 | }
--------------------------------------------------------------------------------
/LICENSE:
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675 |
--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
1 | # ST7789-STM32
2 | Using STM32's Hardware SPI(with simple DMA support) to drive a ST7789 based LCD display.
3 |
4 | ## How to use ?
5 |
6 | 1. Copy the "st7789" dir to your project src path, add it to include path
7 | 2. Include `"st7789.h"` in where you want to use this driver.
8 | 3. Configure parameters in `"st7789.h"` according to your own display panel
9 | 4. In system startup, perform `ST7789_Init();`.
10 | 5. Run a `ST7789_Test()` to exam this driver.
11 | 6. Don't forget to turn the backlight on
12 |
13 | This code has been tested on 240x240 & 170x320 LCD screens.
14 |
15 | > DMA is only useful when huge block write is performed, e.g: Fill full screen or draw a bitmap.
16 | > Most MCUs don't have a large enough RAM, so a framebuffer is "cut" into pieces, e.g: a 240x5 pixel buffer for a 240x240 screen.
17 |
18 | ## SPI Interface
19 |
20 | If you are using **Dupont Line(or jumper wire)**, please notice that your CLK frequency should not exceed 40MHz (may vary, depends on the length of your wire), **otherwise data transfer will collapse!**
21 | For higher speed applications, it's recommended to **use PCB** rather than jumper wires.
22 |
23 | In STM32CubeMX/CubeIDE, config the SPI params as follow:
24 |
25 | 
26 |
27 | I've had a simple test, connect the screen and mcu via 20cm dupont line, and it works normally on **21.25MB/s**. And if I connect a logic analyzer to the clk and data lines(15cm probe), **21.25MB/s doesn't work anymore**, I have to lower its datarate to 10.625MB/s. Using PCB to connect the display, it works up to **40MB/s** and still looks nice.
28 |
29 | ## Supported Displays
30 |
31 | - 135*240
32 | - 240*240
33 | - 170*320 (new)
34 |
35 | If you like, you could customize it's resolution to drive different displays you prefer.
36 | > For example, a 240x320 display is perfectly suited for st7789.
37 | > Just set all X_SHIFT and Y_SHIFT to 0, and set resolution to 240|320.
38 |
39 | For more details, please refer to ST7789's datasheet.
40 |
41 | ## HAL SPI Performance
42 |
43 | - DMA Enabled
44 |
45 | With DMA enabled, cpu won't participate in the data transfer process. So filling a large size of data block is much faster.e.g. fill, drawImage. (You can see no interval between each data write)
46 |
47 | 
48 |
49 |
50 | - DMA Disabled
51 |
52 | Without DMA enabled, the filling process could be a suffer. As you can see, before each data byte write, an interval is inserted, so the total datarate would degrade.
53 |
54 | 
55 |
56 | Especially in some functions where need a little math, the cpu needs to calculate data before a write operation, so the effective datarate would be much lower.(e.g. drawLine)
57 |
58 | 
59 |
60 |
61 | # Special thanks to
62 |
63 | #### Reference
64 | - [ananevilya's Arduino-ST7789-Lib](https://github.com/ananevilya/Arduino-ST7789-Library)
65 | - [afiskon's stm32-st7735 lib](https://github.com/afiskon/stm32-st7735)
66 |
67 | #### Contributor
68 | - [JasonLrh](https://github.com/JasonLrh)
69 | - [ZiangCheng](https://github.com/ZiangCheng)
70 |
--------------------------------------------------------------------------------
/ST7789/fonts.h:
--------------------------------------------------------------------------------
1 | #ifndef __FONT_H
2 | #define __FONT_H
3 |
4 | #include "stdint.h"
5 |
6 | typedef struct {
7 | const uint8_t width;
8 | uint8_t height;
9 | const uint16_t *data;
10 | } FontDef;
11 |
12 | //Font lib.
13 | extern FontDef Font_7x10;
14 | extern FontDef Font_11x18;
15 | extern FontDef Font_16x26;
16 |
17 | //16-bit(RGB565) Image lib.
18 | /*******************************************
19 | * CAUTION:
20 | * If the MCU onchip flash cannot
21 | * store such huge image data,please
22 | * do not use it.
23 | * These pics are for test purpose only.
24 | *******************************************/
25 |
26 | /* 128x128 pixel RGB565 image */
27 | extern const uint16_t saber[][128];
28 |
29 | /* 240x240 pixel RGB565 image
30 | extern const uint16_t knky[][240];
31 | extern const uint16_t tek[][240];
32 | extern const uint16_t adi1[][240];
33 | */
34 | #endif
35 |
--------------------------------------------------------------------------------
/ST7789/st7789.c:
--------------------------------------------------------------------------------
1 | #include "st7789.h"
2 |
3 | #ifdef USE_DMA
4 | #include
5 | uint16_t DMA_MIN_SIZE = 16;
6 | /* If you're using DMA, then u need a "framebuffer" to store datas to be displayed.
7 | * If your MCU don't have enough RAM, please avoid using DMA(or set 5 to 1).
8 | * And if your MCU have enough RAM(even larger than full-frame size),
9 | * Then you can specify the framebuffer size to the full resolution below.
10 | */
11 | #define HOR_LEN 5 // Also mind the resolution of your screen!
12 | uint16_t disp_buf[ST7789_WIDTH * HOR_LEN];
13 | #endif
14 |
15 | /**
16 | * @brief Write command to ST7789 controller
17 | * @param cmd -> command to write
18 | * @return none
19 | */
20 | static void ST7789_WriteCommand(uint8_t cmd)
21 | {
22 | ST7789_Select();
23 | ST7789_DC_Clr();
24 | HAL_SPI_Transmit(&ST7789_SPI_PORT, &cmd, sizeof(cmd), HAL_MAX_DELAY);
25 | ST7789_UnSelect();
26 | }
27 |
28 | /**
29 | * @brief Write data to ST7789 controller
30 | * @param buff -> pointer of data buffer
31 | * @param buff_size -> size of the data buffer
32 | * @return none
33 | */
34 | static void ST7789_WriteData(uint8_t *buff, size_t buff_size)
35 | {
36 | ST7789_Select();
37 | ST7789_DC_Set();
38 |
39 | // split data in small chunks because HAL can't send more than 64K at once
40 |
41 | while (buff_size > 0) {
42 | uint16_t chunk_size = buff_size > 65535 ? 65535 : buff_size;
43 | #ifdef USE_DMA
44 | if (DMA_MIN_SIZE <= buff_size)
45 | {
46 | HAL_SPI_Transmit_DMA(&ST7789_SPI_PORT, buff, chunk_size);
47 | while (ST7789_SPI_PORT.hdmatx->State != HAL_DMA_STATE_READY)
48 | {}
49 | }
50 | else
51 | HAL_SPI_Transmit(&ST7789_SPI_PORT, buff, chunk_size, HAL_MAX_DELAY);
52 | #else
53 | HAL_SPI_Transmit(&ST7789_SPI_PORT, buff, chunk_size, HAL_MAX_DELAY);
54 | #endif
55 | buff += chunk_size;
56 | buff_size -= chunk_size;
57 | }
58 |
59 | ST7789_UnSelect();
60 | }
61 | /**
62 | * @brief Write data to ST7789 controller, simplify for 8bit data.
63 | * data -> data to write
64 | * @return none
65 | */
66 | static void ST7789_WriteSmallData(uint8_t data)
67 | {
68 | ST7789_Select();
69 | ST7789_DC_Set();
70 | HAL_SPI_Transmit(&ST7789_SPI_PORT, &data, sizeof(data), HAL_MAX_DELAY);
71 | ST7789_UnSelect();
72 | }
73 |
74 | /**
75 | * @brief Set the rotation direction of the display
76 | * @param m -> rotation parameter(please refer it in st7789.h)
77 | * @return none
78 | */
79 | void ST7789_SetRotation(uint8_t m)
80 | {
81 | ST7789_WriteCommand(ST7789_MADCTL); // MADCTL
82 | switch (m) {
83 | case 0:
84 | ST7789_WriteSmallData(ST7789_MADCTL_MX | ST7789_MADCTL_MY | ST7789_MADCTL_RGB);
85 | break;
86 | case 1:
87 | ST7789_WriteSmallData(ST7789_MADCTL_MY | ST7789_MADCTL_MV | ST7789_MADCTL_RGB);
88 | break;
89 | case 2:
90 | ST7789_WriteSmallData(ST7789_MADCTL_RGB);
91 | break;
92 | case 3:
93 | ST7789_WriteSmallData(ST7789_MADCTL_MX | ST7789_MADCTL_MV | ST7789_MADCTL_RGB);
94 | break;
95 | default:
96 | break;
97 | }
98 | }
99 |
100 | /**
101 | * @brief Set address of DisplayWindow
102 | * @param xi&yi -> coordinates of window
103 | * @return none
104 | */
105 | static void ST7789_SetAddressWindow(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1)
106 | {
107 | ST7789_Select();
108 | uint16_t x_start = x0 + X_SHIFT, x_end = x1 + X_SHIFT;
109 | uint16_t y_start = y0 + Y_SHIFT, y_end = y1 + Y_SHIFT;
110 |
111 | /* Column Address set */
112 | ST7789_WriteCommand(ST7789_CASET);
113 | {
114 | uint8_t data[] = {x_start >> 8, x_start & 0xFF, x_end >> 8, x_end & 0xFF};
115 | ST7789_WriteData(data, sizeof(data));
116 | }
117 |
118 | /* Row Address set */
119 | ST7789_WriteCommand(ST7789_RASET);
120 | {
121 | uint8_t data[] = {y_start >> 8, y_start & 0xFF, y_end >> 8, y_end & 0xFF};
122 | ST7789_WriteData(data, sizeof(data));
123 | }
124 | /* Write to RAM */
125 | ST7789_WriteCommand(ST7789_RAMWR);
126 | ST7789_UnSelect();
127 | }
128 |
129 | /**
130 | * @brief Initialize ST7789 controller
131 | * @param none
132 | * @return none
133 | */
134 | void ST7789_Init(void)
135 | {
136 | #ifdef USE_DMA
137 | memset(disp_buf, 0, sizeof(disp_buf));
138 | #endif
139 | HAL_Delay(10);
140 | ST7789_RST_Clr();
141 | HAL_Delay(10);
142 | ST7789_RST_Set();
143 | HAL_Delay(20);
144 |
145 | ST7789_WriteCommand(ST7789_COLMOD); // Set color mode
146 | ST7789_WriteSmallData(ST7789_COLOR_MODE_16bit);
147 | ST7789_WriteCommand(0xB2); // Porch control
148 | {
149 | uint8_t data[] = {0x0C, 0x0C, 0x00, 0x33, 0x33};
150 | ST7789_WriteData(data, sizeof(data));
151 | }
152 | ST7789_SetRotation(ST7789_ROTATION); // MADCTL (Display Rotation)
153 |
154 | /* Internal LCD Voltage generator settings */
155 | ST7789_WriteCommand(0XB7); // Gate Control
156 | ST7789_WriteSmallData(0x35); // Default value
157 | ST7789_WriteCommand(0xBB); // VCOM setting
158 | ST7789_WriteSmallData(0x19); // 0.725v (default 0.75v for 0x20)
159 | ST7789_WriteCommand(0xC0); // LCMCTRL
160 | ST7789_WriteSmallData (0x2C); // Default value
161 | ST7789_WriteCommand (0xC2); // VDV and VRH command Enable
162 | ST7789_WriteSmallData (0x01); // Default value
163 | ST7789_WriteCommand (0xC3); // VRH set
164 | ST7789_WriteSmallData (0x12); // +-4.45v (defalut +-4.1v for 0x0B)
165 | ST7789_WriteCommand (0xC4); // VDV set
166 | ST7789_WriteSmallData (0x20); // Default value
167 | ST7789_WriteCommand (0xC6); // Frame rate control in normal mode
168 | ST7789_WriteSmallData (0x0F); // Default value (60HZ)
169 | ST7789_WriteCommand (0xD0); // Power control
170 | ST7789_WriteSmallData (0xA4); // Default value
171 | ST7789_WriteSmallData (0xA1); // Default value
172 | /**************** Division line ****************/
173 |
174 | ST7789_WriteCommand(0xE0);
175 | {
176 | uint8_t data[] = {0xD0, 0x04, 0x0D, 0x11, 0x13, 0x2B, 0x3F, 0x54, 0x4C, 0x18, 0x0D, 0x0B, 0x1F, 0x23};
177 | ST7789_WriteData(data, sizeof(data));
178 | }
179 |
180 | ST7789_WriteCommand(0xE1);
181 | {
182 | uint8_t data[] = {0xD0, 0x04, 0x0C, 0x11, 0x13, 0x2C, 0x3F, 0x44, 0x51, 0x2F, 0x1F, 0x1F, 0x20, 0x23};
183 | ST7789_WriteData(data, sizeof(data));
184 | }
185 | ST7789_WriteCommand (ST7789_INVON); // Inversion ON
186 | ST7789_WriteCommand (ST7789_SLPOUT); // Out of sleep mode
187 | ST7789_WriteCommand (ST7789_NORON); // Normal Display on
188 | ST7789_WriteCommand (ST7789_DISPON); // Main screen turned on
189 |
190 | HAL_Delay(50);
191 | ST7789_Fill_Color(BLACK); // Fill with Black.
192 | }
193 |
194 | /**
195 | * @brief Fill the DisplayWindow with single color
196 | * @param color -> color to Fill with
197 | * @return none
198 | */
199 | void ST7789_Fill_Color(uint16_t color)
200 | {
201 | uint16_t i;
202 | ST7789_SetAddressWindow(0, 0, ST7789_WIDTH - 1, ST7789_HEIGHT - 1);
203 | ST7789_Select();
204 |
205 | #ifdef USE_DMA
206 | for (i = 0; i < ST7789_HEIGHT / HOR_LEN; i++)
207 | {
208 | memset(disp_buf, color, sizeof(disp_buf));
209 | ST7789_WriteData(disp_buf, sizeof(disp_buf));
210 | }
211 | #else
212 | uint16_t j;
213 | for (i = 0; i < ST7789_WIDTH; i++)
214 | for (j = 0; j < ST7789_HEIGHT; j++) {
215 | uint8_t data[] = {color >> 8, color & 0xFF};
216 | ST7789_WriteData(data, sizeof(data));
217 | }
218 | #endif
219 | ST7789_UnSelect();
220 | }
221 |
222 | /**
223 | * @brief Draw a Pixel
224 | * @param x&y -> coordinate to Draw
225 | * @param color -> color of the Pixel
226 | * @return none
227 | */
228 | void ST7789_DrawPixel(uint16_t x, uint16_t y, uint16_t color)
229 | {
230 | if ((x < 0) || (x >= ST7789_WIDTH) ||
231 | (y < 0) || (y >= ST7789_HEIGHT)) return;
232 |
233 | ST7789_SetAddressWindow(x, y, x, y);
234 | uint8_t data[] = {color >> 8, color & 0xFF};
235 | ST7789_Select();
236 | ST7789_WriteData(data, sizeof(data));
237 | ST7789_UnSelect();
238 | }
239 |
240 | /**
241 | * @brief Fill an Area with single color
242 | * @param xSta&ySta -> coordinate of the start point
243 | * @param xEnd&yEnd -> coordinate of the end point
244 | * @param color -> color to Fill with
245 | * @return none
246 | */
247 | void ST7789_Fill(uint16_t xSta, uint16_t ySta, uint16_t xEnd, uint16_t yEnd, uint16_t color)
248 | {
249 | if ((xEnd < 0) || (xEnd >= ST7789_WIDTH) ||
250 | (yEnd < 0) || (yEnd >= ST7789_HEIGHT)) return;
251 | ST7789_Select();
252 | uint16_t i, j;
253 | ST7789_SetAddressWindow(xSta, ySta, xEnd, yEnd);
254 | for (i = ySta; i <= yEnd; i++)
255 | for (j = xSta; j <= xEnd; j++) {
256 | uint8_t data[] = {color >> 8, color & 0xFF};
257 | ST7789_WriteData(data, sizeof(data));
258 | }
259 | ST7789_UnSelect();
260 | }
261 |
262 | /**
263 | * @brief Draw a big Pixel at a point
264 | * @param x&y -> coordinate of the point
265 | * @param color -> color of the Pixel
266 | * @return none
267 | */
268 | void ST7789_DrawPixel_4px(uint16_t x, uint16_t y, uint16_t color)
269 | {
270 | if ((x <= 0) || (x > ST7789_WIDTH) ||
271 | (y <= 0) || (y > ST7789_HEIGHT)) return;
272 | ST7789_Select();
273 | ST7789_Fill(x - 1, y - 1, x + 1, y + 1, color);
274 | ST7789_UnSelect();
275 | }
276 |
277 | /**
278 | * @brief Draw a line with single color
279 | * @param x1&y1 -> coordinate of the start point
280 | * @param x2&y2 -> coordinate of the end point
281 | * @param color -> color of the line to Draw
282 | * @return none
283 | */
284 | void ST7789_DrawLine(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1,
285 | uint16_t color) {
286 | uint16_t swap;
287 | uint16_t steep = ABS(y1 - y0) > ABS(x1 - x0);
288 | if (steep) {
289 | swap = x0;
290 | x0 = y0;
291 | y0 = swap;
292 |
293 | swap = x1;
294 | x1 = y1;
295 | y1 = swap;
296 | //_swap_int16_t(x0, y0);
297 | //_swap_int16_t(x1, y1);
298 | }
299 |
300 | if (x0 > x1) {
301 | swap = x0;
302 | x0 = x1;
303 | x1 = swap;
304 |
305 | swap = y0;
306 | y0 = y1;
307 | y1 = swap;
308 | //_swap_int16_t(x0, x1);
309 | //_swap_int16_t(y0, y1);
310 | }
311 |
312 | int16_t dx, dy;
313 | dx = x1 - x0;
314 | dy = ABS(y1 - y0);
315 |
316 | int16_t err = dx / 2;
317 | int16_t ystep;
318 |
319 | if (y0 < y1) {
320 | ystep = 1;
321 | } else {
322 | ystep = -1;
323 | }
324 |
325 | for (; x0<=x1; x0++) {
326 | if (steep) {
327 | ST7789_DrawPixel(y0, x0, color);
328 | } else {
329 | ST7789_DrawPixel(x0, y0, color);
330 | }
331 | err -= dy;
332 | if (err < 0) {
333 | y0 += ystep;
334 | err += dx;
335 | }
336 | }
337 | }
338 |
339 | /**
340 | * @brief Draw a Rectangle with single color
341 | * @param xi&yi -> 2 coordinates of 2 top points.
342 | * @param color -> color of the Rectangle line
343 | * @return none
344 | */
345 | void ST7789_DrawRectangle(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, uint16_t color)
346 | {
347 | ST7789_Select();
348 | ST7789_DrawLine(x1, y1, x2, y1, color);
349 | ST7789_DrawLine(x1, y1, x1, y2, color);
350 | ST7789_DrawLine(x1, y2, x2, y2, color);
351 | ST7789_DrawLine(x2, y1, x2, y2, color);
352 | ST7789_UnSelect();
353 | }
354 |
355 | /**
356 | * @brief Draw a circle with single color
357 | * @param x0&y0 -> coordinate of circle center
358 | * @param r -> radius of circle
359 | * @param color -> color of circle line
360 | * @return none
361 | */
362 | void ST7789_DrawCircle(uint16_t x0, uint16_t y0, uint8_t r, uint16_t color)
363 | {
364 | int16_t f = 1 - r;
365 | int16_t ddF_x = 1;
366 | int16_t ddF_y = -2 * r;
367 | int16_t x = 0;
368 | int16_t y = r;
369 |
370 | ST7789_Select();
371 | ST7789_DrawPixel(x0, y0 + r, color);
372 | ST7789_DrawPixel(x0, y0 - r, color);
373 | ST7789_DrawPixel(x0 + r, y0, color);
374 | ST7789_DrawPixel(x0 - r, y0, color);
375 |
376 | while (x < y) {
377 | if (f >= 0) {
378 | y--;
379 | ddF_y += 2;
380 | f += ddF_y;
381 | }
382 | x++;
383 | ddF_x += 2;
384 | f += ddF_x;
385 |
386 | ST7789_DrawPixel(x0 + x, y0 + y, color);
387 | ST7789_DrawPixel(x0 - x, y0 + y, color);
388 | ST7789_DrawPixel(x0 + x, y0 - y, color);
389 | ST7789_DrawPixel(x0 - x, y0 - y, color);
390 |
391 | ST7789_DrawPixel(x0 + y, y0 + x, color);
392 | ST7789_DrawPixel(x0 - y, y0 + x, color);
393 | ST7789_DrawPixel(x0 + y, y0 - x, color);
394 | ST7789_DrawPixel(x0 - y, y0 - x, color);
395 | }
396 | ST7789_UnSelect();
397 | }
398 |
399 | /**
400 | * @brief Draw an Image on the screen
401 | * @param x&y -> start point of the Image
402 | * @param w&h -> width & height of the Image to Draw
403 | * @param data -> pointer of the Image array
404 | * @return none
405 | */
406 | void ST7789_DrawImage(uint16_t x, uint16_t y, uint16_t w, uint16_t h, const uint16_t *data)
407 | {
408 | if ((x >= ST7789_WIDTH) || (y >= ST7789_HEIGHT))
409 | return;
410 | if ((x + w - 1) >= ST7789_WIDTH)
411 | return;
412 | if ((y + h - 1) >= ST7789_HEIGHT)
413 | return;
414 |
415 | ST7789_Select();
416 | ST7789_SetAddressWindow(x, y, x + w - 1, y + h - 1);
417 | ST7789_WriteData((uint8_t *)data, sizeof(uint16_t) * w * h);
418 | ST7789_UnSelect();
419 | }
420 |
421 | /**
422 | * @brief Invert Fullscreen color
423 | * @param invert -> Whether to invert
424 | * @return none
425 | */
426 | void ST7789_InvertColors(uint8_t invert)
427 | {
428 | ST7789_Select();
429 | ST7789_WriteCommand(invert ? 0x21 /* INVON */ : 0x20 /* INVOFF */);
430 | ST7789_UnSelect();
431 | }
432 |
433 | /**
434 | * @brief Write a char
435 | * @param x&y -> cursor of the start point.
436 | * @param ch -> char to write
437 | * @param font -> fontstyle of the string
438 | * @param color -> color of the char
439 | * @param bgcolor -> background color of the char
440 | * @return none
441 | */
442 | void ST7789_WriteChar(uint16_t x, uint16_t y, char ch, FontDef font, uint16_t color, uint16_t bgcolor)
443 | {
444 | uint32_t i, b, j;
445 | ST7789_Select();
446 | ST7789_SetAddressWindow(x, y, x + font.width - 1, y + font.height - 1);
447 |
448 | for (i = 0; i < font.height; i++) {
449 | b = font.data[(ch - 32) * font.height + i];
450 | for (j = 0; j < font.width; j++) {
451 | if ((b << j) & 0x8000) {
452 | uint8_t data[] = {color >> 8, color & 0xFF};
453 | ST7789_WriteData(data, sizeof(data));
454 | }
455 | else {
456 | uint8_t data[] = {bgcolor >> 8, bgcolor & 0xFF};
457 | ST7789_WriteData(data, sizeof(data));
458 | }
459 | }
460 | }
461 | ST7789_UnSelect();
462 | }
463 |
464 | /**
465 | * @brief Write a string
466 | * @param x&y -> cursor of the start point.
467 | * @param str -> string to write
468 | * @param font -> fontstyle of the string
469 | * @param color -> color of the string
470 | * @param bgcolor -> background color of the string
471 | * @return none
472 | */
473 | void ST7789_WriteString(uint16_t x, uint16_t y, const char *str, FontDef font, uint16_t color, uint16_t bgcolor)
474 | {
475 | ST7789_Select();
476 | while (*str) {
477 | if (x + font.width >= ST7789_WIDTH) {
478 | x = 0;
479 | y += font.height;
480 | if (y + font.height >= ST7789_HEIGHT) {
481 | break;
482 | }
483 |
484 | if (*str == ' ') {
485 | // skip spaces in the beginning of the new line
486 | str++;
487 | continue;
488 | }
489 | }
490 | ST7789_WriteChar(x, y, *str, font, color, bgcolor);
491 | x += font.width;
492 | str++;
493 | }
494 | ST7789_UnSelect();
495 | }
496 |
497 | /**
498 | * @brief Draw a filled Rectangle with single color
499 | * @param x&y -> coordinates of the starting point
500 | * @param w&h -> width & height of the Rectangle
501 | * @param color -> color of the Rectangle
502 | * @return none
503 | */
504 | void ST7789_DrawFilledRectangle(uint16_t x, uint16_t y, uint16_t w, uint16_t h, uint16_t color)
505 | {
506 | ST7789_Select();
507 | uint8_t i;
508 |
509 | /* Check input parameters */
510 | if (x >= ST7789_WIDTH ||
511 | y >= ST7789_HEIGHT) {
512 | /* Return error */
513 | return;
514 | }
515 |
516 | /* Check width and height */
517 | if ((x + w) >= ST7789_WIDTH) {
518 | w = ST7789_WIDTH - x;
519 | }
520 | if ((y + h) >= ST7789_HEIGHT) {
521 | h = ST7789_HEIGHT - y;
522 | }
523 |
524 | /* Draw lines */
525 | for (i = 0; i <= h; i++) {
526 | /* Draw lines */
527 | ST7789_DrawLine(x, y + i, x + w, y + i, color);
528 | }
529 | ST7789_UnSelect();
530 | }
531 |
532 | /**
533 | * @brief Draw a Triangle with single color
534 | * @param xi&yi -> 3 coordinates of 3 top points.
535 | * @param color ->color of the lines
536 | * @return none
537 | */
538 | void ST7789_DrawTriangle(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, uint16_t x3, uint16_t y3, uint16_t color)
539 | {
540 | ST7789_Select();
541 | /* Draw lines */
542 | ST7789_DrawLine(x1, y1, x2, y2, color);
543 | ST7789_DrawLine(x2, y2, x3, y3, color);
544 | ST7789_DrawLine(x3, y3, x1, y1, color);
545 | ST7789_UnSelect();
546 | }
547 |
548 | /**
549 | * @brief Draw a filled Triangle with single color
550 | * @param xi&yi -> 3 coordinates of 3 top points.
551 | * @param color ->color of the triangle
552 | * @return none
553 | */
554 | void ST7789_DrawFilledTriangle(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, uint16_t x3, uint16_t y3, uint16_t color)
555 | {
556 | ST7789_Select();
557 | int16_t deltax = 0, deltay = 0, x = 0, y = 0, xinc1 = 0, xinc2 = 0,
558 | yinc1 = 0, yinc2 = 0, den = 0, num = 0, numadd = 0, numpixels = 0,
559 | curpixel = 0;
560 |
561 | deltax = ABS(x2 - x1);
562 | deltay = ABS(y2 - y1);
563 | x = x1;
564 | y = y1;
565 |
566 | if (x2 >= x1) {
567 | xinc1 = 1;
568 | xinc2 = 1;
569 | }
570 | else {
571 | xinc1 = -1;
572 | xinc2 = -1;
573 | }
574 |
575 | if (y2 >= y1) {
576 | yinc1 = 1;
577 | yinc2 = 1;
578 | }
579 | else {
580 | yinc1 = -1;
581 | yinc2 = -1;
582 | }
583 |
584 | if (deltax >= deltay) {
585 | xinc1 = 0;
586 | yinc2 = 0;
587 | den = deltax;
588 | num = deltax / 2;
589 | numadd = deltay;
590 | numpixels = deltax;
591 | }
592 | else {
593 | xinc2 = 0;
594 | yinc1 = 0;
595 | den = deltay;
596 | num = deltay / 2;
597 | numadd = deltax;
598 | numpixels = deltay;
599 | }
600 |
601 | for (curpixel = 0; curpixel <= numpixels; curpixel++) {
602 | ST7789_DrawLine(x, y, x3, y3, color);
603 |
604 | num += numadd;
605 | if (num >= den) {
606 | num -= den;
607 | x += xinc1;
608 | y += yinc1;
609 | }
610 | x += xinc2;
611 | y += yinc2;
612 | }
613 | ST7789_UnSelect();
614 | }
615 |
616 | /**
617 | * @brief Draw a Filled circle with single color
618 | * @param x0&y0 -> coordinate of circle center
619 | * @param r -> radius of circle
620 | * @param color -> color of circle
621 | * @return none
622 | */
623 | void ST7789_DrawFilledCircle(int16_t x0, int16_t y0, int16_t r, uint16_t color)
624 | {
625 | ST7789_Select();
626 | int16_t f = 1 - r;
627 | int16_t ddF_x = 1;
628 | int16_t ddF_y = -2 * r;
629 | int16_t x = 0;
630 | int16_t y = r;
631 |
632 | ST7789_DrawPixel(x0, y0 + r, color);
633 | ST7789_DrawPixel(x0, y0 - r, color);
634 | ST7789_DrawPixel(x0 + r, y0, color);
635 | ST7789_DrawPixel(x0 - r, y0, color);
636 | ST7789_DrawLine(x0 - r, y0, x0 + r, y0, color);
637 |
638 | while (x < y) {
639 | if (f >= 0) {
640 | y--;
641 | ddF_y += 2;
642 | f += ddF_y;
643 | }
644 | x++;
645 | ddF_x += 2;
646 | f += ddF_x;
647 |
648 | ST7789_DrawLine(x0 - x, y0 + y, x0 + x, y0 + y, color);
649 | ST7789_DrawLine(x0 + x, y0 - y, x0 - x, y0 - y, color);
650 |
651 | ST7789_DrawLine(x0 + y, y0 + x, x0 - y, y0 + x, color);
652 | ST7789_DrawLine(x0 + y, y0 - x, x0 - y, y0 - x, color);
653 | }
654 | ST7789_UnSelect();
655 | }
656 |
657 |
658 | /**
659 | * @brief Open/Close tearing effect line
660 | * @param tear -> Whether to tear
661 | * @return none
662 | */
663 | void ST7789_TearEffect(uint8_t tear)
664 | {
665 | ST7789_Select();
666 | ST7789_WriteCommand(tear ? 0x35 /* TEON */ : 0x34 /* TEOFF */);
667 | ST7789_UnSelect();
668 | }
669 |
670 |
671 | /**
672 | * @brief A Simple test function for ST7789
673 | * @param none
674 | * @return none
675 | */
676 | void ST7789_Test(void)
677 | {
678 | ST7789_Fill_Color(WHITE);
679 | HAL_Delay(1000);
680 | ST7789_WriteString(10, 20, "Speed Test", Font_11x18, RED, WHITE);
681 | HAL_Delay(1000);
682 | ST7789_Fill_Color(CYAN);
683 | HAL_Delay(500);
684 | ST7789_Fill_Color(RED);
685 | HAL_Delay(500);
686 | ST7789_Fill_Color(BLUE);
687 | HAL_Delay(500);
688 | ST7789_Fill_Color(GREEN);
689 | HAL_Delay(500);
690 | ST7789_Fill_Color(YELLOW);
691 | HAL_Delay(500);
692 | ST7789_Fill_Color(BROWN);
693 | HAL_Delay(500);
694 | ST7789_Fill_Color(DARKBLUE);
695 | HAL_Delay(500);
696 | ST7789_Fill_Color(MAGENTA);
697 | HAL_Delay(500);
698 | ST7789_Fill_Color(LIGHTGREEN);
699 | HAL_Delay(500);
700 | ST7789_Fill_Color(LGRAY);
701 | HAL_Delay(500);
702 | ST7789_Fill_Color(LBBLUE);
703 | HAL_Delay(500);
704 | ST7789_Fill_Color(WHITE);
705 | HAL_Delay(500);
706 |
707 | ST7789_WriteString(10, 10, "Font test.", Font_16x26, GBLUE, WHITE);
708 | ST7789_WriteString(10, 50, "Hello Steve!", Font_7x10, RED, WHITE);
709 | ST7789_WriteString(10, 75, "Hello Steve!", Font_11x18, YELLOW, WHITE);
710 | ST7789_WriteString(10, 100, "Hello Steve!", Font_16x26, MAGENTA, WHITE);
711 | HAL_Delay(1000);
712 |
713 | ST7789_Fill_Color(RED);
714 | ST7789_WriteString(10, 10, "Rect./Line.", Font_11x18, YELLOW, BLACK);
715 | ST7789_DrawRectangle(30, 30, 100, 100, WHITE);
716 | HAL_Delay(1000);
717 |
718 | ST7789_Fill_Color(RED);
719 | ST7789_WriteString(10, 10, "Filled Rect.", Font_11x18, YELLOW, BLACK);
720 | ST7789_DrawFilledRectangle(30, 30, 50, 50, WHITE);
721 | HAL_Delay(1000);
722 |
723 | ST7789_Fill_Color(RED);
724 | ST7789_WriteString(10, 10, "Circle.", Font_11x18, YELLOW, BLACK);
725 | ST7789_DrawCircle(60, 60, 25, WHITE);
726 | HAL_Delay(1000);
727 |
728 | ST7789_Fill_Color(RED);
729 | ST7789_WriteString(10, 10, "Filled Cir.", Font_11x18, YELLOW, BLACK);
730 | ST7789_DrawFilledCircle(60, 60, 25, WHITE);
731 | HAL_Delay(1000);
732 |
733 | ST7789_Fill_Color(RED);
734 | ST7789_WriteString(10, 10, "Triangle", Font_11x18, YELLOW, BLACK);
735 | ST7789_DrawTriangle(30, 30, 30, 70, 60, 40, WHITE);
736 | HAL_Delay(1000);
737 |
738 | ST7789_Fill_Color(RED);
739 | ST7789_WriteString(10, 10, "Filled Tri", Font_11x18, YELLOW, BLACK);
740 | ST7789_DrawFilledTriangle(30, 30, 30, 70, 60, 40, WHITE);
741 | HAL_Delay(1000);
742 |
743 | // If FLASH cannot storage anymore datas, please delete codes below.
744 | ST7789_Fill_Color(WHITE);
745 | ST7789_DrawImage(0, 0, 128, 128, (uint16_t *)saber);
746 | HAL_Delay(3000);
747 | }
748 |
--------------------------------------------------------------------------------
/ST7789/st7789.h:
--------------------------------------------------------------------------------
1 | #ifndef __ST7789_H
2 | #define __ST7789_H
3 |
4 | #include "fonts.h"
5 | #include "main.h"
6 |
7 | /* choose a Hardware SPI port to use. */
8 | #define ST7789_SPI_PORT hspi1
9 | extern SPI_HandleTypeDef ST7789_SPI_PORT;
10 |
11 | /* choose whether use DMA or not */
12 | #define USE_DMA
13 |
14 | /* If u need CS control, comment below*/
15 | //#define CFG_NO_CS
16 |
17 | /* Pin connection*/
18 | #define ST7789_RST_PORT ST7789_RST_GPIO_Port
19 | #define ST7789_RST_PIN ST7789_RST_Pin
20 | #define ST7789_DC_PORT ST7789_DC_GPIO_Port
21 | #define ST7789_DC_PIN ST7789_DC_Pin
22 |
23 | #ifndef CFG_NO_CS
24 | #define ST7789_CS_PORT ST7789_CS_GPIO_Port
25 | #define ST7789_CS_PIN ST7789_CS_Pin
26 | #endif
27 |
28 | /* If u need Backlight control, uncomment below */
29 | //#define BLK_PORT
30 | //#define BLK_PIN
31 |
32 |
33 | /*
34 | * Comment one to use another.
35 | * 3 parameters can be choosed
36 | * 135x240(0.96 inch) & 240x240(1.3inch) & 170x320(1.9inch)
37 | * X_SHIFT & Y_SHIFT are used to adapt different display's resolution
38 | */
39 |
40 | /* Choose a type you are using */
41 | //#define USING_135X240
42 | #define USING_240X240
43 | //#define USING_170X320
44 |
45 | /* Choose a display rotation you want to use: (0-3) */
46 | //#define ST7789_ROTATION 0
47 | //#define ST7789_ROTATION 1
48 | #define ST7789_ROTATION 2 // use Normally on 240x240
49 | //#define ST7789_ROTATION 3
50 |
51 | #ifdef USING_135X240
52 |
53 | #if ST7789_ROTATION == 0
54 | #define ST7789_WIDTH 135
55 | #define ST7789_HEIGHT 240
56 | #define X_SHIFT 53
57 | #define Y_SHIFT 40
58 | #endif
59 |
60 | #if ST7789_ROTATION == 1
61 | #define ST7789_WIDTH 240
62 | #define ST7789_HEIGHT 135
63 | #define X_SHIFT 40
64 | #define Y_SHIFT 52
65 | #endif
66 |
67 | #if ST7789_ROTATION == 2
68 | #define ST7789_WIDTH 135
69 | #define ST7789_HEIGHT 240
70 | #define X_SHIFT 52
71 | #define Y_SHIFT 40
72 | #endif
73 |
74 | #if ST7789_ROTATION == 3
75 | #define ST7789_WIDTH 240
76 | #define ST7789_HEIGHT 135
77 | #define X_SHIFT 40
78 | #define Y_SHIFT 53
79 | #endif
80 |
81 | #endif
82 |
83 | #ifdef USING_240X240
84 |
85 | #define ST7789_WIDTH 240
86 | #define ST7789_HEIGHT 240
87 |
88 | #if ST7789_ROTATION == 0
89 | #define X_SHIFT 0
90 | #define Y_SHIFT 80
91 | #elif ST7789_ROTATION == 1
92 | #define X_SHIFT 80
93 | #define Y_SHIFT 0
94 | #elif ST7789_ROTATION == 2
95 | #define X_SHIFT 0
96 | #define Y_SHIFT 0
97 | #elif ST7789_ROTATION == 3
98 | #define X_SHIFT 0
99 | #define Y_SHIFT 0
100 | #endif
101 |
102 | #endif
103 |
104 | #ifdef USING_170X320
105 |
106 | #if ST7789_ROTATION == 0
107 | #define ST7789_WIDTH 170
108 | #define ST7789_HEIGHT 320
109 | #define X_SHIFT 35
110 | #define Y_SHIFT 0
111 | #endif
112 |
113 | #if ST7789_ROTATION == 1
114 | #define ST7789_WIDTH 320
115 | #define ST7789_HEIGHT 170
116 | #define X_SHIFT 0
117 | #define Y_SHIFT 35
118 | #endif
119 |
120 | #if ST7789_ROTATION == 2
121 | #define ST7789_WIDTH 170
122 | #define ST7789_HEIGHT 320
123 | #define X_SHIFT 35
124 | #define Y_SHIFT 0
125 | #endif
126 |
127 | #if ST7789_ROTATION == 3
128 | #define ST7789_WIDTH 320
129 | #define ST7789_HEIGHT 170
130 | #define X_SHIFT 0
131 | #define Y_SHIFT 35
132 | #endif
133 |
134 | #endif
135 |
136 | /**
137 | *Color of pen
138 | *If you want to use another color, you can choose one in RGB565 format.
139 | */
140 |
141 | #define WHITE 0xFFFF
142 | #define BLACK 0x0000
143 | #define BLUE 0x001F
144 | #define RED 0xF800
145 | #define MAGENTA 0xF81F
146 | #define GREEN 0x07E0
147 | #define CYAN 0x7FFF
148 | #define YELLOW 0xFFE0
149 | #define GRAY 0X8430
150 | #define BRED 0XF81F
151 | #define GRED 0XFFE0
152 | #define GBLUE 0X07FF
153 | #define BROWN 0XBC40
154 | #define BRRED 0XFC07
155 | #define DARKBLUE 0X01CF
156 | #define LIGHTBLUE 0X7D7C
157 | #define GRAYBLUE 0X5458
158 |
159 | #define LIGHTGREEN 0X841F
160 | #define LGRAY 0XC618
161 | #define LGRAYBLUE 0XA651
162 | #define LBBLUE 0X2B12
163 |
164 | /* Control Registers and constant codes */
165 | #define ST7789_NOP 0x00
166 | #define ST7789_SWRESET 0x01
167 | #define ST7789_RDDID 0x04
168 | #define ST7789_RDDST 0x09
169 |
170 | #define ST7789_SLPIN 0x10
171 | #define ST7789_SLPOUT 0x11
172 | #define ST7789_PTLON 0x12
173 | #define ST7789_NORON 0x13
174 |
175 | #define ST7789_INVOFF 0x20
176 | #define ST7789_INVON 0x21
177 | #define ST7789_DISPOFF 0x28
178 | #define ST7789_DISPON 0x29
179 | #define ST7789_CASET 0x2A
180 | #define ST7789_RASET 0x2B
181 | #define ST7789_RAMWR 0x2C
182 | #define ST7789_RAMRD 0x2E
183 |
184 | #define ST7789_PTLAR 0x30
185 | #define ST7789_COLMOD 0x3A
186 | #define ST7789_MADCTL 0x36
187 |
188 | /**
189 | * Memory Data Access Control Register (0x36H)
190 | * MAP: D7 D6 D5 D4 D3 D2 D1 D0
191 | * param: MY MX MV ML RGB MH - -
192 | *
193 | */
194 |
195 | /* Page Address Order ('0': Top to Bottom, '1': the opposite) */
196 | #define ST7789_MADCTL_MY 0x80
197 | /* Column Address Order ('0': Left to Right, '1': the opposite) */
198 | #define ST7789_MADCTL_MX 0x40
199 | /* Page/Column Order ('0' = Normal Mode, '1' = Reverse Mode) */
200 | #define ST7789_MADCTL_MV 0x20
201 | /* Line Address Order ('0' = LCD Refresh Top to Bottom, '1' = the opposite) */
202 | #define ST7789_MADCTL_ML 0x10
203 | /* RGB/BGR Order ('0' = RGB, '1' = BGR) */
204 | #define ST7789_MADCTL_RGB 0x00
205 |
206 | #define ST7789_RDID1 0xDA
207 | #define ST7789_RDID2 0xDB
208 | #define ST7789_RDID3 0xDC
209 | #define ST7789_RDID4 0xDD
210 |
211 | /* Advanced options */
212 | #define ST7789_COLOR_MODE_16bit 0x55 // RGB565 (16bit)
213 | #define ST7789_COLOR_MODE_18bit 0x66 // RGB666 (18bit)
214 |
215 | /* Basic operations */
216 | #define ST7789_RST_Clr() HAL_GPIO_WritePin(ST7789_RST_PORT, ST7789_RST_PIN, GPIO_PIN_RESET)
217 | #define ST7789_RST_Set() HAL_GPIO_WritePin(ST7789_RST_PORT, ST7789_RST_PIN, GPIO_PIN_SET)
218 |
219 | #define ST7789_DC_Clr() HAL_GPIO_WritePin(ST7789_DC_PORT, ST7789_DC_PIN, GPIO_PIN_RESET)
220 | #define ST7789_DC_Set() HAL_GPIO_WritePin(ST7789_DC_PORT, ST7789_DC_PIN, GPIO_PIN_SET)
221 | #ifndef CFG_NO_CS
222 | #define ST7789_Select() HAL_GPIO_WritePin(ST7789_CS_PORT, ST7789_CS_PIN, GPIO_PIN_RESET)
223 | #define ST7789_UnSelect() HAL_GPIO_WritePin(ST7789_CS_PORT, ST7789_CS_PIN, GPIO_PIN_SET)
224 | #else
225 | #define ST7789_Select() asm("nop")
226 | #define ST7789_UnSelect() asm("nop")
227 | #endif
228 |
229 | #define ABS(x) ((x) > 0 ? (x) : -(x))
230 |
231 | /* Basic functions. */
232 | void ST7789_Init(void);
233 | void ST7789_SetRotation(uint8_t m);
234 | void ST7789_Fill_Color(uint16_t color);
235 | void ST7789_DrawPixel(uint16_t x, uint16_t y, uint16_t color);
236 | void ST7789_Fill(uint16_t xSta, uint16_t ySta, uint16_t xEnd, uint16_t yEnd, uint16_t color);
237 | void ST7789_DrawPixel_4px(uint16_t x, uint16_t y, uint16_t color);
238 |
239 | /* Graphical functions. */
240 | void ST7789_DrawLine(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, uint16_t color);
241 | void ST7789_DrawRectangle(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, uint16_t color);
242 | void ST7789_DrawCircle(uint16_t x0, uint16_t y0, uint8_t r, uint16_t color);
243 | void ST7789_DrawImage(uint16_t x, uint16_t y, uint16_t w, uint16_t h, const uint16_t *data);
244 | void ST7789_InvertColors(uint8_t invert);
245 |
246 | /* Text functions. */
247 | void ST7789_WriteChar(uint16_t x, uint16_t y, char ch, FontDef font, uint16_t color, uint16_t bgcolor);
248 | void ST7789_WriteString(uint16_t x, uint16_t y, const char *str, FontDef font, uint16_t color, uint16_t bgcolor);
249 |
250 | /* Extented Graphical functions. */
251 | void ST7789_DrawFilledRectangle(uint16_t x, uint16_t y, uint16_t w, uint16_t h, uint16_t color);
252 | void ST7789_DrawTriangle(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, uint16_t x3, uint16_t y3, uint16_t color);
253 | void ST7789_DrawFilledTriangle(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, uint16_t x3, uint16_t y3, uint16_t color);
254 | void ST7789_DrawFilledCircle(int16_t x0, int16_t y0, int16_t r, uint16_t color);
255 |
256 | /* Command functions */
257 | void ST7789_TearEffect(uint8_t tear);
258 |
259 | /* Simple test function. */
260 | void ST7789_Test(void);
261 |
262 | #ifndef ST7789_ROTATION
263 | #error You should at least choose a display rotation!
264 | #endif
265 |
266 | #endif
267 |
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/fig/draw_line.png:
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https://raw.githubusercontent.com/Floyd-Fish/ST7789-STM32/44ffcfefab97e1d225cbb9b1b4200cfd37093192/fig/draw_line.png
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/fig/fill_dma.png:
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https://raw.githubusercontent.com/Floyd-Fish/ST7789-STM32/44ffcfefab97e1d225cbb9b1b4200cfd37093192/fig/fill_dma.png
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/fig/fill_normal.png:
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https://raw.githubusercontent.com/Floyd-Fish/ST7789-STM32/44ffcfefab97e1d225cbb9b1b4200cfd37093192/fig/fill_normal.png
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/fig/spi.jpg:
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https://raw.githubusercontent.com/Floyd-Fish/ST7789-STM32/44ffcfefab97e1d225cbb9b1b4200cfd37093192/fig/spi.jpg
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