I try the code, with the library for colegue:
/*
* SPDX-FileCopyrightText: 2021-2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: CC0-1.0
*/
#include <stdio.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/semphr.h"
#include "esp_timer.h"
#include "esp_lcd_panel_io.h"
#include "esp_lcd_panel_vendor.h"
#include "esp_lcd_panel_ops.h"
#include "driver/gpio.h"
#include "driver/spi_master.h"
#include "esp_err.h"
#include "esp_log.h"
#include "lvgl.h"
#if CONFIG_EXAMPLE_LCD_CONTROLLER_ILI9341
#include "esp_lcd_ili9341.h"
#elif CONFIG_EXAMPLE_LCD_CONTROLLER_GC9A01
#include "esp_lcd_gc9a01.h"
#endif
#if CONFIG_EXAMPLE_LCD_TOUCH_CONTROLLER_XPT2046
#include "esp_lcd_touch_XPT2046.h"
#endif
static const char *TAG = "example";
// Using SPI2 in the example
#define LCD_HOST SPI2_HOST
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////// Please update the following configuration according to your LCD spec //////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
#define EXAMPLE_LCD_PIXEL_CLOCK_HZ (20 * 1000 * 1000)
#define EXAMPLE_LCD_BK_LIGHT_ON_LEVEL 1
#define EXAMPLE_LCD_BK_LIGHT_OFF_LEVEL !EXAMPLE_LCD_BK_LIGHT_ON_LEVEL
#define EXAMPLE_PIN_NUM_SCLK 14
#define EXAMPLE_PIN_NUM_MOSI 13
#define EXAMPLE_PIN_NUM_MISO 12
#define EXAMPLE_PIN_NUM_LCD_DC 2
#define EXAMPLE_PIN_NUM_LCD_RST -1
#define EXAMPLE_PIN_NUM_LCD_CS 15
#define EXAMPLE_PIN_NUM_BK_LIGHT 27
#define EXAMPLE_PIN_NUM_TOUCH_CS 33
// The pixel number in horizontal and vertical
#if CONFIG_EXAMPLE_LCD_CONTROLLER_ILI9341
#define EXAMPLE_LCD_H_RES 240
#define EXAMPLE_LCD_V_RES 320
#elif CONFIG_EXAMPLE_LCD_CONTROLLER_GC9A01
#define EXAMPLE_LCD_H_RES 240
#define EXAMPLE_LCD_V_RES 240
#endif
// Bit number used to represent command and parameter
#define EXAMPLE_LCD_CMD_BITS 8
#define EXAMPLE_LCD_PARAM_BITS 8
#define EXAMPLE_LVGL_TICK_PERIOD_MS 2
#define EXAMPLE_LVGL_TASK_MAX_DELAY_MS 500
#define EXAMPLE_LVGL_TASK_MIN_DELAY_MS 1
#define EXAMPLE_LVGL_TASK_STACK_SIZE (4 * 1024)
#define EXAMPLE_LVGL_TASK_PRIORITY 2
static SemaphoreHandle_t lvgl_mux = NULL;
#if CONFIG_EXAMPLE_LCD_TOUCH_ENABLED
esp_lcd_touch_handle_t tp = NULL;
#endif
extern void example_lvgl_demo_ui(lv_disp_t *disp);
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)
{
lv_disp_drv_t *disp_driver = (lv_disp_drv_t *)user_ctx;
lv_disp_flush_ready(disp_driver);
return false;
}
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;
// copy a buffer's content to a specific area of the display
esp_lcd_panel_draw_bitmap(panel_handle, offsetx1, offsety1, offsetx2 + 1, offsety2 + 1, color_map);
}
/* Rotate display and touch, when rotated screen in LVGL. Called when driver parameters are updated. */
static void example_lvgl_port_update_callback(lv_disp_drv_t *drv)
{
esp_lcd_panel_handle_t panel_handle = (esp_lcd_panel_handle_t) drv->user_data;
switch (drv->rotated) {
case LV_DISP_ROT_NONE:
// Rotate LCD display
esp_lcd_panel_swap_xy(panel_handle, false);
esp_lcd_panel_mirror(panel_handle, true, false);
#if CONFIG_EXAMPLE_LCD_TOUCH_ENABLED
// Rotate LCD touch
esp_lcd_touch_set_mirror_y(tp, false);
esp_lcd_touch_set_mirror_x(tp, false);
#endif
break;
case LV_DISP_ROT_90:
// Rotate LCD display
esp_lcd_panel_swap_xy(panel_handle, true);
esp_lcd_panel_mirror(panel_handle, true, true);
#if CONFIG_EXAMPLE_LCD_TOUCH_ENABLED
// Rotate LCD touch
esp_lcd_touch_set_mirror_y(tp, false);
esp_lcd_touch_set_mirror_x(tp, false);
#endif
break;
case LV_DISP_ROT_180:
// Rotate LCD display
esp_lcd_panel_swap_xy(panel_handle, false);
esp_lcd_panel_mirror(panel_handle, false, true);
#if CONFIG_EXAMPLE_LCD_TOUCH_ENABLED
// Rotate LCD touch
esp_lcd_touch_set_mirror_y(tp, false);
esp_lcd_touch_set_mirror_x(tp, false);
#endif
break;
case LV_DISP_ROT_270:
// Rotate LCD display
esp_lcd_panel_swap_xy(panel_handle, true);
esp_lcd_panel_mirror(panel_handle, false, false);
#if CONFIG_EXAMPLE_LCD_TOUCH_ENABLED
// Rotate LCD touch
esp_lcd_touch_set_mirror_y(tp, false);
esp_lcd_touch_set_mirror_x(tp, false);
#endif
break;
}
}
#if CONFIG_EXAMPLE_LCD_TOUCH_ENABLED
static void example_lvgl_touch_cb(lv_indev_drv_t * drv, lv_indev_data_t * data)
{
uint16_t touchpad_x[1] = {0};
uint16_t touchpad_y[1] = {0};
uint8_t touchpad_cnt = 0;
/* Read touch controller data */
esp_lcd_touch_read_data(drv->user_data);
/* Get coordinates */
bool touchpad_pressed = esp_lcd_touch_get_coordinates(drv->user_data, touchpad_x, touchpad_y, NULL, &touchpad_cnt, 1);
if (touchpad_pressed && touchpad_cnt > 0) {
data->point.x = touchpad_x[0];
data->point.y = touchpad_y[0];
data->state = LV_INDEV_STATE_PRESSED;
} else {
data->state = LV_INDEV_STATE_RELEASED;
}
}
#endif
static void example_increase_lvgl_tick(void *arg)
{
/* Tell LVGL how many milliseconds has elapsed */
lv_tick_inc(EXAMPLE_LVGL_TICK_PERIOD_MS);
}
bool example_lvgl_lock(int timeout_ms)
{
// Convert timeout in milliseconds to FreeRTOS ticks
// If `timeout_ms` is set to -1, the program will block until the condition is met
const TickType_t timeout_ticks = (timeout_ms == -1) ? portMAX_DELAY : pdMS_TO_TICKS(timeout_ms);
return xSemaphoreTakeRecursive(lvgl_mux, timeout_ticks) == pdTRUE;
}
void example_lvgl_unlock(void)
{
xSemaphoreGiveRecursive(lvgl_mux);
}
static void example_lvgl_port_task(void *arg)
{
ESP_LOGI(TAG, "Starting LVGL task");
uint32_t task_delay_ms = EXAMPLE_LVGL_TASK_MAX_DELAY_MS;
while (1) {
// Lock the mutex due to the LVGL APIs are not thread-safe
if (example_lvgl_lock(-1)) {
task_delay_ms = lv_timer_handler();
// Release the mutex
example_lvgl_unlock();
}
if (task_delay_ms > EXAMPLE_LVGL_TASK_MAX_DELAY_MS) {
task_delay_ms = EXAMPLE_LVGL_TASK_MAX_DELAY_MS;
} else if (task_delay_ms < EXAMPLE_LVGL_TASK_MIN_DELAY_MS) {
task_delay_ms = EXAMPLE_LVGL_TASK_MIN_DELAY_MS;
}
vTaskDelay(pdMS_TO_TICKS(task_delay_ms));
}
}
void app_main(void)
{
static lv_disp_draw_buf_t disp_buf; // contains internal graphic buffer(s) called draw buffer(s)
static lv_disp_drv_t disp_drv; // contains callback functions
ESP_LOGI(TAG, "Turn off LCD backlight");
gpio_config_t bk_gpio_config = {
.mode = GPIO_MODE_OUTPUT,
.pin_bit_mask = 1ULL << EXAMPLE_PIN_NUM_BK_LIGHT
};
ESP_ERROR_CHECK(gpio_config(&bk_gpio_config));
ESP_LOGI(TAG, "Initialize SPI bus");
spi_bus_config_t buscfg = {
.sclk_io_num = EXAMPLE_PIN_NUM_SCLK,
.mosi_io_num = EXAMPLE_PIN_NUM_MOSI,
.miso_io_num = EXAMPLE_PIN_NUM_MISO,
.quadwp_io_num = -1,
.quadhd_io_num = -1,
.max_transfer_sz = EXAMPLE_LCD_H_RES * 80 * sizeof(uint16_t),
};
ESP_ERROR_CHECK(spi_bus_initialize(LCD_HOST, &buscfg, SPI_DMA_CH_AUTO));
ESP_LOGI(TAG, "Install panel IO");
esp_lcd_panel_io_handle_t io_handle = NULL;
esp_lcd_panel_io_spi_config_t io_config = {
.dc_gpio_num = EXAMPLE_PIN_NUM_LCD_DC,
.cs_gpio_num = EXAMPLE_PIN_NUM_LCD_CS,
.pclk_hz = EXAMPLE_LCD_PIXEL_CLOCK_HZ,
.lcd_cmd_bits = EXAMPLE_LCD_CMD_BITS,
.lcd_param_bits = EXAMPLE_LCD_PARAM_BITS,
.spi_mode = 0,
.trans_queue_depth = 10,
.on_color_trans_done = example_notify_lvgl_flush_ready,
.user_ctx = &disp_drv,
};
// Attach the LCD to the SPI bus
ESP_ERROR_CHECK(esp_lcd_new_panel_io_spi((esp_lcd_spi_bus_handle_t)LCD_HOST, &io_config, &io_handle));
esp_lcd_panel_handle_t panel_handle = NULL;
esp_lcd_panel_dev_config_t panel_config = {
.reset_gpio_num = EXAMPLE_PIN_NUM_LCD_RST,
.rgb_ele_order = LCD_RGB_ELEMENT_ORDER_BGR,
.bits_per_pixel = 16,
};
#if CONFIG_EXAMPLE_LCD_CONTROLLER_ILI9341
ESP_LOGI(TAG, "Install ILI9341 panel driver");
ESP_ERROR_CHECK(esp_lcd_new_panel_ili9341(io_handle, &panel_config, &panel_handle));
#elif CONFIG_EXAMPLE_LCD_CONTROLLER_GC9A01
ESP_LOGI(TAG, "Install GC9A01 panel driver");
ESP_ERROR_CHECK(esp_lcd_new_panel_gc9a01(io_handle, &panel_config, &panel_handle));
#endif
ESP_ERROR_CHECK(esp_lcd_panel_reset(panel_handle));
ESP_ERROR_CHECK(esp_lcd_panel_init(panel_handle));
#if CONFIG_EXAMPLE_LCD_CONTROLLER_GC9A01
ESP_ERROR_CHECK(esp_lcd_panel_invert_color(panel_handle, true));
#endif
ESP_ERROR_CHECK(esp_lcd_panel_mirror(panel_handle, true, false));
// user can flush pre-defined pattern to the screen before we turn on the screen or backlight
ESP_ERROR_CHECK(esp_lcd_panel_disp_on_off(panel_handle, true));
#if CONFIG_EXAMPLE_LCD_TOUCH_ENABLED
esp_lcd_panel_io_handle_t tp_io_handle = NULL;
esp_lcd_panel_io_spi_config_t tp_io_config = ESP_LCD_TOUCH_IO_SPI_XPT2046_CONFIG(EXAMPLE_PIN_NUM_TOUCH_CS);
// Attach the TOUCH to the SPI bus
ESP_ERROR_CHECK(esp_lcd_new_panel_io_spi((esp_lcd_spi_bus_handle_t)LCD_HOST, &tp_io_config, &tp_io_handle));
esp_lcd_touch_config_t tp_cfg = {
.x_max = EXAMPLE_LCD_H_RES,
.y_max = EXAMPLE_LCD_V_RES,
.rst_gpio_num = -1,
.int_gpio_num = -1,
.flags = {
.swap_xy = 0,
.mirror_x = 0,
.mirror_y = 0,
},
};
#if CONFIG_EXAMPLE_LCD_TOUCH_CONTROLLER_XPT2046
ESP_LOGI(TAG, "Initialize touch controller XPT2046");
ESP_ERROR_CHECK(esp_lcd_touch_new_spi_xpt2046(tp_io_handle, &tp_cfg, &tp));
#endif // CONFIG_EXAMPLE_LCD_TOUCH_CONTROLLER_XPT2046
#endif // CONFIG_EXAMPLE_LCD_TOUCH_ENABLED
ESP_LOGI(TAG, "Turn on LCD backlight");
gpio_set_level(EXAMPLE_PIN_NUM_BK_LIGHT, EXAMPLE_LCD_BK_LIGHT_ON_LEVEL);
ESP_LOGI(TAG, "Initialize LVGL library");
lv_init();
// alloc draw buffers used by LVGL
// it's recommended to choose the size of the draw buffer(s) to be at least 1/10 screen sized
lv_color_t *buf1 = heap_caps_malloc(EXAMPLE_LCD_H_RES * 20 * sizeof(lv_color_t), MALLOC_CAP_DMA);
assert(buf1);
lv_color_t *buf2 = heap_caps_malloc(EXAMPLE_LCD_H_RES * 20 * sizeof(lv_color_t), MALLOC_CAP_DMA);
assert(buf2);
// initialize LVGL draw buffers
lv_disp_draw_buf_init(&disp_buf, buf1, buf2, EXAMPLE_LCD_H_RES * 20);
ESP_LOGI(TAG, "Register display driver to LVGL");
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.drv_update_cb = example_lvgl_port_update_callback;
disp_drv.draw_buf = &disp_buf;
disp_drv.user_data = panel_handle;
lv_disp_t *disp = lv_disp_drv_register(&disp_drv);
ESP_LOGI(TAG, "Install LVGL tick timer");
// Tick interface for LVGL (using esp_timer to generate 2ms periodic event)
const esp_timer_create_args_t lvgl_tick_timer_args = {
.callback = &example_increase_lvgl_tick,
.name = "lvgl_tick"
};
esp_timer_handle_t lvgl_tick_timer = NULL;
ESP_ERROR_CHECK(esp_timer_create(&lvgl_tick_timer_args, &lvgl_tick_timer));
ESP_ERROR_CHECK(esp_timer_start_periodic(lvgl_tick_timer, EXAMPLE_LVGL_TICK_PERIOD_MS * 1000));
#if CONFIG_EXAMPLE_LCD_TOUCH_ENABLED
static lv_indev_drv_t indev_drv; // Input device driver (Touch)
lv_indev_drv_init(&indev_drv);
indev_drv.type = LV_INDEV_TYPE_POINTER;
indev_drv.disp = disp;
indev_drv.read_cb = example_lvgl_touch_cb;
indev_drv.user_data = tp;
lv_indev_drv_register(&indev_drv);
#endif
lvgl_mux = xSemaphoreCreateRecursiveMutex();
assert(lvgl_mux);
ESP_LOGI(TAG, "Create LVGL task");
xTaskCreate(example_lvgl_port_task, "LVGL", EXAMPLE_LVGL_TASK_STACK_SIZE, NULL, EXAMPLE_LVGL_TASK_PRIORITY, NULL);
ESP_LOGI(TAG, "Display LVGL Meter Widget");
// Lock the mutex due to the LVGL APIs are not thread-safe
if (example_lvgl_lock(-1)) {
example_lvgl_demo_ui(disp);
// Release the mutex
example_lvgl_unlock();
}
}
Is don’t work!