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| 1 | +#include <lvgl.h> |
| 2 | +#include <TFT_eSPI.h> |
| 3 | +/*If you want to use the LVGL examples, |
| 4 | + make sure to install the lv_examples Arduino library |
| 5 | + and uncomment the following line. |
| 6 | +#include <lv_examples.h> |
| 7 | +*/ |
| 8 | + |
| 9 | +#include <lv_demo.h> |
| 10 | + |
| 11 | +TFT_eSPI tft = TFT_eSPI(); /* TFT instance */ |
| 12 | + |
| 13 | +/*Change to your screen resolution*/ |
| 14 | +static const uint32_t screenWidth = 480; |
| 15 | +static const uint32_t screenHeight = 320; |
| 16 | + |
| 17 | +static lv_disp_draw_buf_t draw_buf; |
| 18 | +static lv_color_t buf[ screenWidth * 10 ]; |
| 19 | + |
| 20 | +#if LV_USE_LOG != 0 |
| 21 | +/* Serial debugging */ |
| 22 | +void my_print( lv_log_level_t level, const char * file, uint32_t line, const char * fn_name, const char * dsc ) |
| 23 | +{ |
| 24 | + Serial.printf( "%s(%s)@%d->%s\r\n", file, fn_name, line, dsc ); |
| 25 | + Serial.flush(); |
| 26 | +} |
| 27 | +#endif |
| 28 | + |
| 29 | +/* Display flushing */ |
| 30 | +void my_disp_flush( lv_disp_drv_t *disp, const lv_area_t *area, lv_color_t *color_p ) |
| 31 | +{ |
| 32 | + uint32_t w = ( area->x2 - area->x1 + 1 ); |
| 33 | + uint32_t h = ( area->y2 - area->y1 + 1 ); |
| 34 | + |
| 35 | + tft.startWrite(); |
| 36 | + tft.setAddrWindow( area->x1, area->y1, w, h ); |
| 37 | + tft.pushColors( ( uint16_t * )&color_p->full, w * h, true ); |
| 38 | + tft.endWrite(); |
| 39 | + |
| 40 | + lv_disp_flush_ready( disp ); |
| 41 | +} |
| 42 | + |
| 43 | +/*Read the touchpad*/ |
| 44 | +bool my_touchpad_read( lv_indev_drv_t * indev_driver, lv_indev_data_t * data ) |
| 45 | +{ |
| 46 | + uint16_t touchX, touchY; |
| 47 | + |
| 48 | + bool touched = tft.getTouch( &touchX, &touchY, 600 ); |
| 49 | + |
| 50 | + if( !touched ) |
| 51 | + { |
| 52 | + data->state = LV_INDEV_STATE_REL; |
| 53 | + } |
| 54 | + else |
| 55 | + { |
| 56 | + data->state = LV_INDEV_STATE_PR; |
| 57 | + |
| 58 | + /*Set the coordinates*/ |
| 59 | + data->point.x = touchX; |
| 60 | + data->point.y = touchY; |
| 61 | + |
| 62 | + Serial.print( "Data x " ); |
| 63 | + Serial.println( touchX ); |
| 64 | + |
| 65 | + Serial.print( "Data y " ); |
| 66 | + Serial.println( touchY ); |
| 67 | + } |
| 68 | + |
| 69 | + return false; /*Return `false` because we are not buffering and no more data to read*/ |
| 70 | +} |
| 71 | + |
| 72 | +void setup() |
| 73 | +{ |
| 74 | + Serial.begin( 115200 ); /* prepare for possible serial debug */ |
| 75 | + Serial.println( "Hello Arduino! (V8.0.X)" ); |
| 76 | + Serial.println( "I am LVGL_Arduino" ); |
| 77 | + |
| 78 | + lv_init(); |
| 79 | + |
| 80 | +#if LV_USE_LOG != 0 |
| 81 | + lv_log_register_print_cb( my_print ); /* register print function for debugging */ |
| 82 | +#endif |
| 83 | + |
| 84 | + tft.begin(); /* TFT init */ |
| 85 | + tft.setRotation( 3 ); /* Landscape orientation, flipped */ |
| 86 | + |
| 87 | + /*Set the touchscreen calibration data, |
| 88 | + the actual data for your display can be aquired using |
| 89 | + the Generic -> Touch_calibrate example from the TFT_eSPI library*/ |
| 90 | + uint16_t calData[5] = { 275, 3620, 264, 3532, 1 }; |
| 91 | + tft.setTouch( calData ); |
| 92 | + |
| 93 | + lv_disp_draw_buf_init( &draw_buf, buf, NULL, screenWidth * 10 ); |
| 94 | + |
| 95 | + /*Initialize the display*/ |
| 96 | + static lv_disp_drv_t disp_drv; |
| 97 | + lv_disp_drv_init( &disp_drv ); |
| 98 | + /*Change the following line to your display resolution*/ |
| 99 | + disp_drv.hor_res = screenWidth; |
| 100 | + disp_drv.ver_res = screenHeight; |
| 101 | + disp_drv.flush_cb = my_disp_flush; |
| 102 | + disp_drv.draw_buf = &draw_buf; |
| 103 | + lv_disp_drv_register( &disp_drv ); |
| 104 | + |
| 105 | + /*Initialize the (dummy) input device driver*/ |
| 106 | + static lv_indev_drv_t indev_drv; |
| 107 | + lv_indev_drv_init( &indev_drv ); |
| 108 | + indev_drv.type = LV_INDEV_TYPE_POINTER; |
| 109 | + indev_drv.read_cb = my_touchpad_read; |
| 110 | + lv_indev_drv_register( &indev_drv ); |
| 111 | + |
| 112 | +#if 0 |
| 113 | + /* Create simple label */ |
| 114 | + lv_obj_t *label = lv_label_create( lv_scr_act() ); |
| 115 | + lv_label_set_text( label, "Hello Arduino! (V8.0.X)" ); |
| 116 | + lv_obj_align( label, LV_ALIGN_CENTER, 0, 0 ); |
| 117 | +#else |
| 118 | + /* Try an example from the lv_examples Arduino library |
| 119 | + make sure to include it as written above. |
| 120 | + lv_example_btn_1(); |
| 121 | + */ |
| 122 | + |
| 123 | + // uncomment one of these demos |
| 124 | + lv_demo_widgets(); // OK |
| 125 | + // lv_demo_benchmark(); // OK |
| 126 | + // lv_demo_keypad_encoder(); // works, but I haven't an encoder |
| 127 | + // lv_demo_music(); // NOK |
| 128 | + // lv_demo_printer(); |
| 129 | + // lv_demo_stress(); // seems to be OK |
| 130 | +#endif |
| 131 | + Serial.println( "Setup done" ); |
| 132 | +} |
| 133 | + |
| 134 | +void loop() |
| 135 | +{ |
| 136 | + lv_timer_handler(); /* let the GUI do its work */ |
| 137 | + delay( 5 ); |
| 138 | +} |
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