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136 | #include "Arduino.h"
#include "lvgl.h"
#include "esp_lcd_panel_io.h"
#include "esp_lcd_panel_ops.h"
#include "esp_lcd_panel_vendor.h"
#include "pin_config.h"
#include "esp_sntp.h"
// グローバル変数
esp_lcd_panel_io_handle_t io_handle = NULL;
static lv_disp_draw_buf_t disp_buf;
static lv_disp_drv_t disp_drv;
static lv_color_t *lv_disp_buf;
static bool is_initialized_lvgl = false;
lv_style_t log_style;
lv_obj_t *log_label;
int i = 0;
/**
* LVGLがデータのフラッシュの準備ができたときに通知
*/
static bool example_notify_lvgl_flush_ready(esp_lcd_panel_io_handle_t panel_io, esp_lcd_panel_io_event_data_t *edata, void *user_ctx) {
// LVGLの初期化が完了していれば
if (is_initialized_lvgl) {
lv_disp_drv_t *disp_driver = (lv_disp_drv_t *)user_ctx;
lv_disp_flush_ready(disp_driver);
}
return false;
}
/**
* LVGLのデータをLCDにフラッシュするコールバック関数
*/
static void example_lvgl_flush_cb(lv_disp_drv_t *drv, const lv_area_t *area, lv_color_t *color_map) {
esp_lcd_panel_handle_t panel_handle = (esp_lcd_panel_handle_t)drv->user_data;
int offsetx1 = area->x1;
int offsetx2 = area->x2;
int offsety1 = area->y1;
int offsety2 = area->y2;
esp_lcd_panel_draw_bitmap(panel_handle, offsetx1, offsety1, offsetx2 + 1, offsety2 + 1, color_map);
}
void setup() {
// 電源オンの設定
pinMode(PIN_POWER_ON, OUTPUT);
digitalWrite(PIN_POWER_ON, HIGH);
// LCDの設定: LCDのReadピンをHighに設定
pinMode(PIN_LCD_RD, OUTPUT);
digitalWrite(PIN_LCD_RD, HIGH);
// LCDバスの初期化設定
esp_lcd_i80_bus_handle_t i80_bus = NULL;
esp_lcd_i80_bus_config_t bus_config = {
.dc_gpio_num = PIN_LCD_DC,
.wr_gpio_num = PIN_LCD_WR,
.clk_src = LCD_CLK_SRC_PLL160M,
.data_gpio_nums = {
PIN_LCD_D0, PIN_LCD_D1, PIN_LCD_D2, PIN_LCD_D3, PIN_LCD_D4, PIN_LCD_D5, PIN_LCD_D6, PIN_LCD_D7
},
.bus_width = 8,
.max_transfer_bytes = LVGL_LCD_BUF_SIZE * sizeof(uint16_t),
.psram_trans_align = 0,
.sram_trans_align = 0
};
// LCDバスとIOの作成と初期化
esp_lcd_new_i80_bus(&bus_config, &i80_bus);
esp_lcd_panel_io_i80_config_t io_config = {
.cs_gpio_num = PIN_LCD_CS,
.pclk_hz = EXAMPLE_LCD_PIXEL_CLOCK_HZ,
.trans_queue_depth = 20,
.on_color_trans_done = example_notify_lvgl_flush_ready,
.user_ctx = &disp_drv,
.lcd_cmd_bits = 8,
.lcd_param_bits = 8,
.dc_levels = { .dc_idle_level = 0, .dc_cmd_level = 0, .dc_dummy_level = 0, .dc_data_level = 1 }
};
ESP_ERROR_CHECK(esp_lcd_new_panel_io_i80(i80_bus, &io_config, &io_handle));
// LCDパネルの初期化と設定
esp_lcd_panel_handle_t panel_handle = NULL;
esp_lcd_panel_dev_config_t panel_config = {
.reset_gpio_num = PIN_LCD_RES,
.color_space = ESP_LCD_COLOR_SPACE_RGB,
.bits_per_pixel = 16,
.vendor_config = NULL
};
esp_lcd_new_panel_st7789(io_handle, &panel_config, &panel_handle);
esp_lcd_panel_reset(panel_handle);
esp_lcd_panel_init(panel_handle);
esp_lcd_panel_invert_color(panel_handle, true);
esp_lcd_panel_swap_xy(panel_handle, true);
esp_lcd_panel_mirror(panel_handle, false, true);
esp_lcd_panel_set_gap(panel_handle, 0, 35);
// 画面を徐々に点灯させる
ledcSetup(0, 10000, 8);
ledcAttachPin(PIN_LCD_BL, 0);
for (uint8_t i = 0; i < 0xFF; i++) {
ledcWrite(0, i);
delay(2);
}
// LVGLグラフィックライブラリの初期化
lv_init();
lv_disp_buf = (lv_color_t *)heap_caps_malloc(LVGL_LCD_BUF_SIZE * sizeof(lv_color_t), MALLOC_CAP_DMA | MALLOC_CAP_INTERNAL);
lv_disp_draw_buf_init(&disp_buf, lv_disp_buf, NULL, LVGL_LCD_BUF_SIZE);
lv_disp_drv_init(&disp_drv);
disp_drv.hor_res = EXAMPLE_LCD_H_RES;
disp_drv.ver_res = EXAMPLE_LCD_V_RES;
disp_drv.flush_cb = example_lvgl_flush_cb;
disp_drv.draw_buf = &disp_buf;
disp_drv.user_data = panel_handle;
lv_disp_drv_register(&disp_drv);
is_initialized_lvgl = true;
// LVGLのラベルを作成し、ディスプレイにスタイルを追加
log_label = lv_label_create(lv_scr_act());
lv_style_init(&log_style);
lv_style_set_text_color(&log_style, lv_color_hex(0xFF10F0));
lv_obj_add_style(log_label, &log_style, LV_PART_MAIN);
lv_obj_align(log_label, LV_ALIGN_TOP_LEFT, 0, 0);
lv_obj_set_width(log_label, LV_PCT(100));
lv_label_set_long_mode(log_label, LV_LABEL_LONG_SCROLL);
lv_label_set_recolor(log_label, true);
lv_label_set_text(log_label, "");
}
void loop() {
i++;
lv_timer_handler();
String msg = "Hello World\n" + String(i);
lv_label_set_text(log_label, msg.c_str());
delay(100);
}
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