1 /**
2 * @file lv_tft_espi.cpp
3 *
4 */
5
6 /*********************
7 * INCLUDES
8 *********************/
9 #include "lv_tft_espi.h"
10 #if LV_USE_TFT_ESPI
11
12 #include <TFT_eSPI.h>
13
14 /*********************
15 * DEFINES
16 *********************/
17
18 /**********************
19 * TYPEDEFS
20 **********************/
21 typedef struct {
22 TFT_eSPI * tft;
23 } lv_tft_espi_t;
24
25 /**********************
26 * STATIC PROTOTYPES
27 **********************/
28 static void flush_cb(lv_display_t * disp, const lv_area_t * area, uint8_t * px_map);
29 static void resolution_changed_event_cb(lv_event_t * e);
30
31 /**********************
32 * STATIC VARIABLES
33 **********************/
34
35 /**********************
36 * MACROS
37 **********************/
38
39 /**********************
40 * GLOBAL FUNCTIONS
41 **********************/
42
lv_tft_espi_create(uint32_t hor_res,uint32_t ver_res,void * buf,uint32_t buf_size_bytes)43 lv_display_t * lv_tft_espi_create(uint32_t hor_res, uint32_t ver_res, void * buf, uint32_t buf_size_bytes)
44 {
45 lv_tft_espi_t * dsc = (lv_tft_espi_t *)lv_malloc_zeroed(sizeof(lv_tft_espi_t));
46 LV_ASSERT_MALLOC(dsc);
47 if(dsc == NULL) return NULL;
48
49 lv_display_t * disp = lv_display_create(hor_res, ver_res);
50 if(disp == NULL) {
51 lv_free(dsc);
52 return NULL;
53 }
54
55 dsc->tft = new TFT_eSPI(hor_res, ver_res);
56 dsc->tft->begin(); /* TFT init */
57 dsc->tft->setRotation(0);
58 lv_display_set_driver_data(disp, (void *)dsc);
59 lv_display_set_flush_cb(disp, flush_cb);
60 lv_display_add_event_cb(disp, resolution_changed_event_cb, LV_EVENT_RESOLUTION_CHANGED, NULL);
61 lv_display_set_buffers(disp, (void *)buf, NULL, buf_size_bytes, LV_DISPLAY_RENDER_MODE_PARTIAL);
62 return disp;
63 }
64
65 /**********************
66 * STATIC FUNCTIONS
67 **********************/
68
flush_cb(lv_display_t * disp,const lv_area_t * area,uint8_t * px_map)69 static void flush_cb(lv_display_t * disp, const lv_area_t * area, uint8_t * px_map)
70 {
71 lv_tft_espi_t * dsc = (lv_tft_espi_t *)lv_display_get_driver_data(disp);
72
73 uint32_t w = (area->x2 - area->x1 + 1);
74 uint32_t h = (area->y2 - area->y1 + 1);
75
76 dsc->tft->startWrite();
77 dsc->tft->setAddrWindow(area->x1, area->y1, w, h);
78 dsc->tft->pushColors((uint16_t *)px_map, w * h, true);
79 dsc->tft->endWrite();
80
81 lv_display_flush_ready(disp);
82
83 }
84
resolution_changed_event_cb(lv_event_t * e)85 static void resolution_changed_event_cb(lv_event_t * e)
86 {
87 lv_display_t * disp = (lv_display_t *)lv_event_get_target(e);
88 lv_tft_espi_t * dsc = (lv_tft_espi_t *)lv_display_get_driver_data(disp);
89 int32_t hor_res = lv_display_get_horizontal_resolution(disp);
90 int32_t ver_res = lv_display_get_vertical_resolution(disp);
91 lv_display_rotation_t rot = lv_display_get_rotation(disp);
92
93 /* handle rotation */
94 switch(rot) {
95 case LV_DISPLAY_ROTATION_0:
96 dsc->tft->setRotation(0); /* Portrait orientation */
97 break;
98 case LV_DISPLAY_ROTATION_90:
99 dsc->tft->setRotation(1); /* Landscape orientation */
100 break;
101 case LV_DISPLAY_ROTATION_180:
102 dsc->tft->setRotation(2); /* Portrait orientation, flipped */
103 break;
104 case LV_DISPLAY_ROTATION_270:
105 dsc->tft->setRotation(3); /* Landscape orientation, flipped */
106 break;
107 }
108 }
109
110 #endif /*LV_USE_TFT_ESPI*/
111
