141 lines
3.8 KiB
C++
141 lines
3.8 KiB
C++
#include <lvgl.h>
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#include <TFT_eSPI.h>
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/*If you want to use the LVGL examples,
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make sure to install the lv_examples Arduino library
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and uncomment the following line.
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#include <lv_examples.h>
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*/
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#include <lv_demo.h>
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/*Change to your screen resolution*/
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static const uint16_t screenWidth = 480;
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static const uint16_t screenHeight = 320;
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static lv_disp_draw_buf_t draw_buf;
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static lv_color_t buf[ screenWidth * 10 ];
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TFT_eSPI tft = TFT_eSPI(screenWidth, screenHeight); /* TFT instance */
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#if LV_USE_LOG != 0
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/* Serial debugging */
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void my_print(const char * buf)
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{
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Serial.printf(buf);
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Serial.flush();
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}
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#endif
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/* Display flushing */
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void my_disp_flush( lv_disp_drv_t *disp, const lv_area_t *area, lv_color_t *color_p )
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{
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uint32_t w = ( area->x2 - area->x1 + 1 );
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uint32_t h = ( area->y2 - area->y1 + 1 );
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tft.startWrite();
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tft.setAddrWindow( area->x1, area->y1, w, h );
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tft.pushColors( ( uint16_t * )&color_p->full, w * h, true );
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tft.endWrite();
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lv_disp_flush_ready( disp );
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}
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/*Read the touchpad*/
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void my_touchpad_read( lv_indev_drv_t * indev_driver, lv_indev_data_t * data )
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{
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uint16_t touchX, touchY;
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bool touched = tft.getTouch( &touchX, &touchY, 600 );
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if( !touched )
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{
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data->state = LV_INDEV_STATE_REL;
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}
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else
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{
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data->state = LV_INDEV_STATE_PR;
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/*Set the coordinates*/
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data->point.x = touchX;
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data->point.y = touchY;
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Serial.print( "Data x " );
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Serial.println( touchX );
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Serial.print( "Data y " );
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Serial.println( touchY );
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}
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}
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void setup()
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{
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Serial.begin( 115200 ); /* prepare for possible serial debug */
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String LVGL_Arduino = "Hello Arduino! ";
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LVGL_Arduino += String('V') + lv_version_major() + "." + lv_version_minor() + "." + lv_version_patch();
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Serial.println( LVGL_Arduino );
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Serial.println( "I am LVGL_Arduino" );
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lv_init();
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#if LV_USE_LOG != 0
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lv_log_register_print_cb( my_print ); /* register print function for debugging */
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#endif
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tft.begin(); /* TFT init */
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tft.setRotation( 3 ); /* Landscape orientation, flipped */
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/*Set the touchscreen calibration data,
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the actual data for your display can be acquired using
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the Generic -> Touch_calibrate example from the TFT_eSPI library*/
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uint16_t calData[5] = { 275, 3620, 264, 3532, 1 };
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tft.setTouch( calData );
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lv_disp_draw_buf_init( &draw_buf, buf, NULL, screenWidth * 10 );
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/*Initialize the display*/
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static lv_disp_drv_t disp_drv;
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lv_disp_drv_init( &disp_drv );
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/*Change the following line to your display resolution*/
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disp_drv.hor_res = screenWidth;
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disp_drv.ver_res = screenHeight;
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disp_drv.flush_cb = my_disp_flush;
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disp_drv.draw_buf = &draw_buf;
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lv_disp_drv_register( &disp_drv );
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/*Initialize the (dummy) input device driver*/
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static lv_indev_drv_t indev_drv;
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lv_indev_drv_init( &indev_drv );
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indev_drv.type = LV_INDEV_TYPE_POINTER;
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indev_drv.read_cb = my_touchpad_read;
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lv_indev_drv_register( &indev_drv );
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#if 0
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/* Create simple label */
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lv_obj_t *label = lv_label_create( lv_scr_act() );
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lv_label_set_text( label, LVGL_Arduino.c_str() );
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lv_obj_align( label, LV_ALIGN_CENTER, 0, 0 );
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#else
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/* Try an example from the lv_examples Arduino library
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make sure to include it as written above.
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lv_example_btn_1();
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*/
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// uncomment one of these demos
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lv_demo_widgets(); // OK
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// lv_demo_benchmark(); // OK
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// lv_demo_keypad_encoder(); // works, but I haven't an encoder
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// lv_demo_music(); // NOK
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// lv_demo_printer();
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// lv_demo_stress(); // seems to be OK
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#endif
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Serial.println( "Setup done" );
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}
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void loop()
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{
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lv_timer_handler(); /* let the GUI do its work */
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delay( 5 );
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}
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