You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
141 lines
4.3 KiB
C++
141 lines
4.3 KiB
C++
/*Using LVGL with Arduino requires some extra steps:
|
|
*Be sure to read the docs here: https://docs.lvgl.io/master/get-started/platforms/arduino.html */
|
|
|
|
#include <lvgl.h>
|
|
#include <TFT_eSPI.h>
|
|
|
|
/*To use the built-in examples and demos of LVGL uncomment the includes below respectively.
|
|
*You also need to copy `lvgl/examples` to `lvgl/src/examples`. Similarly for the demos `lvgl/demos` to `lvgl/src/demos`.
|
|
Note that the `lv_examples` library is for LVGL v7 and you shouldn't install it for this version (since LVGL v8)
|
|
as the examples and demos are now part of the main LVGL library. */
|
|
|
|
/*Change to your screen resolution*/
|
|
static const uint16_t screenWidth = 480;
|
|
static const uint16_t screenHeight = 320;
|
|
|
|
static lv_disp_draw_buf_t draw_buf;
|
|
static lv_color_t buf[ screenWidth * screenHeight / 10 ];
|
|
|
|
TFT_eSPI tft = TFT_eSPI(screenWidth, screenHeight); /* TFT instance */
|
|
|
|
#if LV_USE_LOG != 0
|
|
/* Serial debugging */
|
|
void my_print(const char * buf)
|
|
{
|
|
Serial.printf(buf);
|
|
Serial.flush();
|
|
}
|
|
#endif
|
|
|
|
/* Display flushing */
|
|
void my_disp_flush( lv_disp_drv_t *disp_drv, const lv_area_t *area, lv_color_t *color_p )
|
|
{
|
|
uint32_t w = ( area->x2 - area->x1 + 1 );
|
|
uint32_t h = ( area->y2 - area->y1 + 1 );
|
|
|
|
tft.startWrite();
|
|
tft.setAddrWindow( area->x1, area->y1, w, h );
|
|
tft.pushColors( ( uint16_t * )&color_p->full, w * h, true );
|
|
tft.endWrite();
|
|
|
|
lv_disp_flush_ready( disp_drv );
|
|
}
|
|
|
|
/*Read the touchpad*/
|
|
void my_touchpad_read( lv_indev_drv_t * indev_drv, lv_indev_data_t * data )
|
|
{
|
|
uint16_t touchX, touchY;
|
|
|
|
bool touched = tft.getTouch( &touchX, &touchY, 600 );
|
|
|
|
if( !touched )
|
|
{
|
|
data->state = LV_INDEV_STATE_REL;
|
|
}
|
|
else
|
|
{
|
|
data->state = LV_INDEV_STATE_PR;
|
|
|
|
/*Set the coordinates*/
|
|
data->point.x = touchX;
|
|
data->point.y = touchY;
|
|
|
|
Serial.print( "Data x " );
|
|
Serial.println( touchX );
|
|
|
|
Serial.print( "Data y " );
|
|
Serial.println( touchY );
|
|
}
|
|
}
|
|
|
|
void setup()
|
|
{
|
|
Serial.begin( 115200 ); /* prepare for possible serial debug */
|
|
|
|
String LVGL_Arduino = "Hello Arduino! ";
|
|
LVGL_Arduino += String('V') + lv_version_major() + "." + lv_version_minor() + "." + lv_version_patch();
|
|
|
|
Serial.println( LVGL_Arduino );
|
|
Serial.println( "I am LVGL_Arduino" );
|
|
|
|
lv_init();
|
|
|
|
#if LV_USE_LOG != 0
|
|
lv_log_register_print_cb( my_print ); /* register print function for debugging */
|
|
#endif
|
|
|
|
tft.begin(); /* TFT init */
|
|
tft.setRotation( 3 ); /* Landscape orientation, flipped */
|
|
|
|
/*Set the touchscreen calibration data,
|
|
the actual data for your display can be acquired using
|
|
the Generic -> Touch_calibrate example from the TFT_eSPI library*/
|
|
uint16_t calData[5] = { 275, 3620, 264, 3532, 1 };
|
|
tft.setTouch( calData );
|
|
|
|
lv_disp_draw_buf_init( &draw_buf, buf, NULL, screenWidth * screenHeight / 10 );
|
|
|
|
/*Initialize the display*/
|
|
static lv_disp_drv_t disp_drv;
|
|
lv_disp_drv_init( &disp_drv );
|
|
/*Change the following line to your display resolution*/
|
|
disp_drv.hor_res = screenWidth;
|
|
disp_drv.ver_res = screenHeight;
|
|
disp_drv.flush_cb = my_disp_flush;
|
|
disp_drv.draw_buf = &draw_buf;
|
|
lv_disp_drv_register( &disp_drv );
|
|
|
|
/*Initialize the (dummy) input device driver*/
|
|
static lv_indev_drv_t indev_drv;
|
|
lv_indev_drv_init( &indev_drv );
|
|
indev_drv.type = LV_INDEV_TYPE_POINTER;
|
|
indev_drv.read_cb = my_touchpad_read;
|
|
lv_indev_drv_register( &indev_drv );
|
|
|
|
/* Create simple label */
|
|
lv_obj_t *label = lv_label_create( lv_scr_act() );
|
|
lv_label_set_text( label, "Hello Ardino and LVGL!");
|
|
lv_obj_align( label, LV_ALIGN_CENTER, 0, 0 );
|
|
|
|
/* Try an example. See all the examples
|
|
* online: https://docs.lvgl.io/master/examples.html
|
|
* source codes: https://github.com/lvgl/lvgl/tree/e7f88efa5853128bf871dde335c0ca8da9eb7731/examples */
|
|
//lv_example_btn_1();
|
|
|
|
/*Or try out a demo. Don't forget to enable the demos in lv_conf.h. E.g. LV_USE_DEMOS_WIDGETS*/
|
|
//lv_demo_widgets();
|
|
// lv_demo_benchmark();
|
|
// lv_demo_keypad_encoder();
|
|
// lv_demo_music();
|
|
// lv_demo_printer();
|
|
// lv_demo_stress();
|
|
|
|
Serial.println( "Setup done" );
|
|
}
|
|
|
|
void loop()
|
|
{
|
|
lv_timer_handler(); /* let the GUI do its work */
|
|
delay( 5 );
|
|
}
|