FreeRTOS

lvgl8.4

代码如下

#include <lvgl.h>
#include <Arduino_GFX_Library.h>
#include "bsp_cst816.h"
#include "ui/ui.h"

#define EXAMPLE_PIN_NUM_LCD_SCLK 39
#define EXAMPLE_PIN_NUM_LCD_MOSI 38
#define EXAMPLE_PIN_NUM_LCD_MISO 40
#define EXAMPLE_PIN_NUM_LCD_DC 42
#define EXAMPLE_PIN_NUM_LCD_RST -1
#define EXAMPLE_PIN_NUM_LCD_CS 45
#define EXAMPLE_PIN_NUM_LCD_BL 1
#define EXAMPLE_PIN_NUM_TP_SDA 48
#define EXAMPLE_PIN_NUM_TP_SCL 47

#define LEDC_FREQ 5000
#define LEDC_TIMER_10_BIT 10

#define EXAMPLE_LCD_ROTATION 0
#define EXAMPLE_LCD_H_RES 240
#define EXAMPLE_LCD_V_RES 320

Arduino_DataBus *bus = new Arduino_ESP32SPI(
  EXAMPLE_PIN_NUM_LCD_DC /* DC */, EXAMPLE_PIN_NUM_LCD_CS /* CS */,
  EXAMPLE_PIN_NUM_LCD_SCLK /* SCK */, EXAMPLE_PIN_NUM_LCD_MOSI /* MOSI */, EXAMPLE_PIN_NUM_LCD_MISO /* MISO */);

Arduino_GFX *gfx = new Arduino_ST7789(
  bus, EXAMPLE_PIN_NUM_LCD_RST /* RST */, EXAMPLE_LCD_ROTATION /* rotation */, true /* IPS */,
  EXAMPLE_LCD_H_RES /* width */, EXAMPLE_LCD_V_RES /* height */);

uint32_t screenWidth;
uint32_t screenHeight;
uint32_t bufSize;
lv_disp_draw_buf_t draw_buf;
lv_color_t *disp_draw_buf;
lv_disp_drv_t disp_drv;

void my_disp_flush(lv_disp_drv_t *disp_drv, const lv_area_t *area, lv_color_t *color_p) {
  lv_disp_flush_ready(disp_drv);
}

void my_touchpad_read(lv_indev_drv_t *indev_drv, lv_indev_data_t *data) {
  uint16_t touchpad_x;
  uint16_t touchpad_y;
  bsp_touch_read();
  if (bsp_touch_get_coordinates(&touchpad_x, &touchpad_y)) {
    data->point.x = touchpad_x;
    data->point.y = touchpad_y;
    data->state = LV_INDEV_STATE_PRESSED;
  } else {
    data->state = LV_INDEV_STATE_RELEASED;
  }
}

void setup() {
  Serial.begin(115200);
  Serial.println("Arduino_GFX LVGL_Arduino_v8 example ");

  if (!gfx->begin()) {
    Serial.println("gfx->begin() failed!");
  }
  gfx->fillScreen(BLACK);

#ifdef EXAMPLE_PIN_NUM_LCD_BL
  ledcAttach(EXAMPLE_PIN_NUM_LCD_BL, LEDC_FREQ, LEDC_TIMER_10_BIT);
  ledcWrite(EXAMPLE_PIN_NUM_LCD_BL, (1 << LEDC_TIMER_10_BIT) / 100 * 80);
#endif

  Wire.begin(EXAMPLE_PIN_NUM_TP_SDA, EXAMPLE_PIN_NUM_TP_SCL);
  bsp_touch_init(&Wire, gfx->getRotation(), gfx->width(), gfx->height());
  lv_init();

  screenWidth = gfx->width();
  screenHeight = gfx->height();
  bufSize = screenWidth * screenHeight;

  disp_draw_buf = (lv_color_t *)heap_caps_malloc(bufSize * 2, MALLOC_CAP_INTERNAL | MALLOC_CAP_8BIT);
  if (!disp_draw_buf) {
    disp_draw_buf = (lv_color_t *)heap_caps_malloc(bufSize * 2, MALLOC_CAP_8BIT);
  }

  if (!disp_draw_buf) {
    Serial.println("LVGL disp_draw_buf allocate failed!");
  } else {
    lv_disp_draw_buf_init(&draw_buf, disp_draw_buf, NULL, bufSize);

    lv_disp_drv_init(&disp_drv);
    disp_drv.hor_res = screenWidth;
    disp_drv.ver_res = screenHeight;
    disp_drv.flush_cb = my_disp_flush;
    disp_drv.draw_buf = &draw_buf;
    disp_drv.direct_mode = true;

    lv_disp_drv_register(&disp_drv);

    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);
  }

  Serial.println("Setup done");
  ui_init();
}

void loop() {
  lv_timer_handler();
  ui_tick();
#if (LV_COLOR_16_SWAP != 0)
  gfx->draw16bitBeRGBBitmap(0, 0, (uint16_t *)disp_draw_buf, screenWidth, screenHeight);
#else
  gfx->draw16bitRGBBitmap(0, 0, (uint16_t *)disp_draw_buf, screenWidth, screenHeight);
#endif
  delay(5);
}