91 lines
2.7 KiB
C++
91 lines
2.7 KiB
C++
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#include <lvgl.h>
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#include "tft_hal_esp32.h"
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#include "sleep_hal_esp32.h"
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// -----------------------
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// https://docs.lvgl.io/8.3/porting/display.html?highlight=lv_disp_draw_buf_init#buffering-modes
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// With two buffers, the rendering and refreshing of the display become parallel operations
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// Second buffer needs 15.360 bytes more memory in heap.
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#define useTwoBuffersForlvgl
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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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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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#ifdef useTwoBuffersForlvgl
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tft.pushPixelsDMA((uint16_t*)&color_p->full, w * h);
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#else
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tft.pushColors((uint16_t*)&color_p->full, w * h, true);
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#endif
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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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int16_t touchX;
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int16_t touchY;
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get_touchpoint(&touchX, &touchY);
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bool touched = false;
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if ((touchX > 0) || (touchY > 0)) {
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touched = true;
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setLastActivityTimestamp_HAL();
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}
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if( !touched ){
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data->state = LV_INDEV_STATE_REL;
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}
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else{
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data->state = LV_INDEV_STATE_PR;
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// Set the coordinates
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data->point.x = SCR_WIDTH - touchX;
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data->point.y = SCR_HEIGHT - touchY;
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//Serial.print( "touchpoint: x" );
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//Serial.print( touchX );
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//Serial.print( " y" );
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//Serial.println( touchY );
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//tft.drawFastHLine(0, SCR_HEIGHT - touchY, SCR_WIDTH, TFT_RED);
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//tft.drawFastVLine(SCR_WIDTH - touchX, 0, SCR_HEIGHT, TFT_RED);
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}
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}
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static lv_disp_draw_buf_t draw_buf;
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void init_lvgl_HAL() {
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// first init TFT
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init_tft();
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#ifdef useTwoBuffersForlvgl
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lv_color_t * bufA = (lv_color_t *) malloc(sizeof(lv_color_t) * SCR_WIDTH * SCR_HEIGHT / 10);
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lv_color_t * bufB = (lv_color_t *) malloc(sizeof(lv_color_t) * SCR_WIDTH * SCR_HEIGHT / 10);
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lv_disp_draw_buf_init(&draw_buf, bufA, bufB, SCR_WIDTH * SCR_HEIGHT / 10);
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#else
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lv_color_t * bufA = (lv_color_t *) malloc(sizeof(lv_color_t) * SCR_WIDTH * SCR_HEIGHT / 10);
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lv_disp_draw_buf_init(&draw_buf, bufA, NULL, SCR_WIDTH * SCR_HEIGHT / 10);
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#endif
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// Initialize the display driver --------------------------------------------------------------------------
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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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disp_drv.hor_res = SCR_WIDTH;
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disp_drv.ver_res = SCR_HEIGHT;
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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 touchscreen 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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}
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