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Merge branch 'feat/adapt_spi_lcd_to_lvgl_v9' into 'master'

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feat(spi_lcd): adapt spi_lcd example to LVGL v9

Closes IDF-10953 and IDFGH-13741

See merge request espressif/esp-idf!33620
This commit is contained in:
morris 2024-09-20 10:11:43 +08:00
commit c44e7dcb14
9 changed files with 141 additions and 204 deletions
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4
components/esp_lcd/test_apps/.build-test-rules.yml
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@ -52,7 +52,3 @@ components/esp_lcd/test_apps/spi_lcd:
- esp_driver_spi
disable:
- if: SOC_GPSPI_SUPPORTED != 1
disable_test:
- if: IDF_TARGET in ["esp32c61"]
temporary: true
reason: test failed # TODO: ESP32C61 IDF-10953

7
components/esp_lcd/test_apps/spi_lcd/main/test_spi_board.h
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@ -28,6 +28,13 @@ extern "C" {
#define TEST_LCD_DC_GPIO 1
#define TEST_LCD_PCLK_GPIO 2
#define TEST_LCD_DATA0_GPIO 4
#elif CONFIG_IDF_TARGET_ESP32C61
#define TEST_LCD_BK_LIGHT_GPIO 3
#define TEST_LCD_RST_GPIO 5
#define TEST_LCD_CS_GPIO 0
#define TEST_LCD_DC_GPIO 1
#define TEST_LCD_PCLK_GPIO 2
#define TEST_LCD_DATA0_GPIO 4
#elif CONFIG_IDF_TARGET_ESP32P4
#define TEST_LCD_BK_LIGHT_GPIO 23
#define TEST_LCD_RST_GPIO 6

1
components/esp_lcd/test_apps/spi_lcd/pytest_spi_lcd.py
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@ -5,7 +5,6 @@ from pytest_embedded import Dut
@pytest.mark.supported_targets
@pytest.mark.temp_skip_ci(targets=['esp32c61'], reason='test case fail') # TODO: [ESP32C61] IDF-10953
@pytest.mark.generic
@pytest.mark.parametrize(
'config',

6
docs/en/api-reference/peripherals/lcd/spi_lcd.rst
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@ -5,14 +5,16 @@ SPI Interfaced LCD
#. Create an SPI bus. Please refer to :doc:`SPI Master API doc </api-reference/peripherals/spi_master>` for more details.
Currently the driver supports SPI, Quad SPI and Octal SPI (simulate Intel 8080 timing) modes.
.. code-block:: c
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, // Quad SPI LCD driver is not yet supported
.quadhd_io_num = -1, // Quad SPI LCD driver is not yet supported
.quadwp_io_num = -1,
.quadhd_io_num = -1,
.max_transfer_sz = EXAMPLE_LCD_H_RES * 80 * sizeof(uint16_t), // transfer 80 lines of pixels (assume pixel is RGB565) at most in one SPI transaction
};
ESP_ERROR_CHECK(spi_bus_initialize(LCD_HOST, &buscfg, SPI_DMA_CH_AUTO)); // Enable the DMA feature

6
docs/zh_CN/api-reference/peripherals/lcd/spi_lcd.rst
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@ -5,14 +5,16 @@ SPI 接口的 LCD
#. 创建 SPI 总线。详情请参阅 :doc:`SPI 主机 API 文档 </api-reference/peripherals/spi_master>`。
目前驱动支持 SPI， Quad SPI 和 Octal SPI（模拟 Intel 8080 时序）模式。
.. code-block:: c
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, // 目前不支持 Quad SPI LCD 驱动
.quadhd_io_num = -1, // 目前不支持 Quad SPI LCD 驱动
.quadwp_io_num = -1,
.quadhd_io_num = -1,
.max_transfer_sz = EXAMPLE_LCD_H_RES * 80 * sizeof(uint16_t), // 单次最多可传输 80 行像素（假设像素格式为 RGB565）
};
ESP_ERROR_CHECK(spi_bus_initialize(LCD_HOST, &buscfg, SPI_DMA_CH_AUTO)); // 启用 DMA

3
examples/peripherals/lcd/spi_lcd_touch/main/idf_component.yml
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@ -1,6 +1,5 @@
dependencies:
idf: ">=4.4"
lvgl/lvgl: "~8.3.0"
lvgl/lvgl: "~9.2.0"
esp_lcd_ili9341: "^1.0"
esp_lcd_gc9a01: "^1.0"
esp_lcd_touch_stmpe610: "^1.0"

82
examples/peripherals/lcd/spi_lcd_touch/main/lvgl_demo_ui.c
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@ -1,86 +1,56 @@
/*
* SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2021-2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: CC0-1.0
*/
// This demo UI is adapted from LVGL official example: https://docs.lvgl.io/master/widgets/extra/meter.html#simple-meter
// This demo UI is adapted from LVGL official example: https://docs.lvgl.io/master/examples.html#loader-with-arc
#include "lvgl.h"
static lv_obj_t *meter;
static lv_obj_t * btn;
static lv_disp_rot_t rotation = LV_DISP_ROT_NONE;
static void set_value(void *indic, int32_t v)
{
lv_meter_set_indicator_end_value(meter, indic, v);
}
static lv_display_rotation_t rotation = LV_DISP_ROTATION_0;
static void btn_cb(lv_event_t * e)
{
lv_disp_t *disp = lv_event_get_user_data(e);
lv_display_t *disp = lv_event_get_user_data(e);
rotation++;
if (rotation > LV_DISP_ROT_270) {
rotation = LV_DISP_ROT_NONE;
if (rotation > LV_DISP_ROTATION_270) {
rotation = LV_DISP_ROTATION_0;
}
lv_disp_set_rotation(disp, rotation);
}
void example_lvgl_demo_ui(lv_disp_t *disp)
static void set_angle(void * obj, int32_t v)
{
lv_obj_t *scr = lv_disp_get_scr_act(disp);
meter = lv_meter_create(scr);
lv_obj_center(meter);
lv_obj_set_size(meter, 200, 200);
lv_arc_set_value(obj, v);
}
/*Add a scale first*/
lv_meter_scale_t *scale = lv_meter_add_scale(meter);
lv_meter_set_scale_ticks(meter, scale, 41, 2, 10, lv_palette_main(LV_PALETTE_GREY));
lv_meter_set_scale_major_ticks(meter, scale, 8, 4, 15, lv_color_black(), 10);
void example_lvgl_demo_ui(lv_display_t *disp)
{
lv_obj_t *scr = lv_display_get_screen_active(disp);
lv_meter_indicator_t *indic;
/*Add a blue arc to the start*/
indic = lv_meter_add_arc(meter, scale, 3, lv_palette_main(LV_PALETTE_BLUE), 0);
lv_meter_set_indicator_start_value(meter, indic, 0);
lv_meter_set_indicator_end_value(meter, indic, 20);
/*Make the tick lines blue at the start of the scale*/
indic = lv_meter_add_scale_lines(meter, scale, lv_palette_main(LV_PALETTE_BLUE), lv_palette_main(LV_PALETTE_BLUE), false, 0);
lv_meter_set_indicator_start_value(meter, indic, 0);
lv_meter_set_indicator_end_value(meter, indic, 20);
/*Add a red arc to the end*/
indic = lv_meter_add_arc(meter, scale, 3, lv_palette_main(LV_PALETTE_RED), 0);
lv_meter_set_indicator_start_value(meter, indic, 80);
lv_meter_set_indicator_end_value(meter, indic, 100);
/*Make the tick lines red at the end of the scale*/
indic = lv_meter_add_scale_lines(meter, scale, lv_palette_main(LV_PALETTE_RED), lv_palette_main(LV_PALETTE_RED), false, 0);
lv_meter_set_indicator_start_value(meter, indic, 80);
lv_meter_set_indicator_end_value(meter, indic, 100);
/*Add a needle line indicator*/
indic = lv_meter_add_needle_line(meter, scale, 4, lv_palette_main(LV_PALETTE_GREY), -10);
btn = lv_btn_create(scr);
btn = lv_button_create(scr);
lv_obj_t * lbl = lv_label_create(btn);
lv_label_set_text_static(lbl, LV_SYMBOL_REFRESH" ROTATE");
lv_obj_align(btn, LV_ALIGN_BOTTOM_LEFT, 30, -30);
/*Button event*/
lv_obj_add_event_cb(btn, btn_cb, LV_EVENT_CLICKED, disp);
/*Create an animation to set the value*/
/*Create an Arc*/
lv_obj_t * arc = lv_arc_create(scr);
lv_arc_set_rotation(arc, 270);
lv_arc_set_bg_angles(arc, 0, 360);
lv_obj_remove_style(arc, NULL, LV_PART_KNOB); /*Be sure the knob is not displayed*/
lv_obj_remove_flag(arc, LV_OBJ_FLAG_CLICKABLE); /*To not allow adjusting by click*/
lv_obj_center(arc);
lv_anim_t a;
lv_anim_init(&a);
lv_anim_set_exec_cb(&a, set_value);
lv_anim_set_var(&a, indic);
lv_anim_set_var(&a, arc);
lv_anim_set_exec_cb(&a, set_angle);
lv_anim_set_duration(&a, 1000);
lv_anim_set_repeat_count(&a, LV_ANIM_REPEAT_INFINITE); /*Just for the demo*/
lv_anim_set_repeat_delay(&a, 500);
lv_anim_set_values(&a, 0, 100);
lv_anim_set_time(&a, 2000);
lv_anim_set_repeat_delay(&a, 100);
lv_anim_set_playback_time(&a, 500);
lv_anim_set_playback_delay(&a, 100);
lv_anim_set_repeat_count(&a, LV_ANIM_REPEAT_INFINITE);
lv_anim_start(&a);
}

258
examples/peripherals/lcd/spi_lcd_touch/main/spi_lcd_touch_example_main.c
View File

@ -1,13 +1,15 @@
/*
* SPDX-FileCopyrightText: 2021-2023 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2021-2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: CC0-1.0
*/
#include <stdio.h>
#include <unistd.h>
#include <sys/lock.h>
#include <sys/param.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"
@ -60,99 +62,80 @@ static const char *TAG = "example";
#define EXAMPLE_LCD_CMD_BITS 8
#define EXAMPLE_LCD_PARAM_BITS 8
#define EXAMPLE_LVGL_DRAW_BUF_LINES 20 // number of display lines in each draw buffer
#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
// LVGL library is not thread-safe, this example will call LVGL APIs from different tasks, so use a mutex to protect it
static _lock_t lvgl_api_lock;
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);
lv_display_t *disp = (lv_display_t *)user_ctx;
lv_display_flush_ready(disp);
return false;
}
static void example_lvgl_flush_cb(lv_disp_drv_t *drv, const lv_area_t *area, lv_color_t *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_display_t *disp)
{
esp_lcd_panel_handle_t panel_handle = (esp_lcd_panel_handle_t) drv->user_data;
esp_lcd_panel_handle_t panel_handle = lv_display_get_user_data(disp);
lv_display_rotation_t rotation = lv_display_get_rotation(disp);
switch (rotation) {
case LV_DISPLAY_ROTATION_0:
// Rotate LCD display
esp_lcd_panel_swap_xy(panel_handle, false);
esp_lcd_panel_mirror(panel_handle, true, false);
break;
case LV_DISPLAY_ROTATION_90:
// Rotate LCD display
esp_lcd_panel_swap_xy(panel_handle, true);
esp_lcd_panel_mirror(panel_handle, true, true);
break;
case LV_DISPLAY_ROTATION_180:
// Rotate LCD display
esp_lcd_panel_swap_xy(panel_handle, false);
esp_lcd_panel_mirror(panel_handle, false, true);
break;
case LV_DISPLAY_ROTATION_270:
// Rotate LCD display
esp_lcd_panel_swap_xy(panel_handle, true);
esp_lcd_panel_mirror(panel_handle, false, false);
break;
}
}
static void example_lvgl_flush_cb(lv_display_t *disp, const lv_area_t *area, uint8_t *px_map)
{
example_lvgl_port_update_callback(disp);
esp_lcd_panel_handle_t panel_handle = lv_display_get_user_data(disp);
int offsetx1 = area->x1;
int offsetx2 = area->x2;
int offsety1 = area->y1;
int offsety2 = area->y2;
// because SPI LCD is big-endian, we need to swap the RGB bytes order
lv_draw_sw_rgb565_swap(px_map, (offsetx2 + 1 - offsetx1) * (offsety2 + 1 - offsety1));
// 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;
}
esp_lcd_panel_draw_bitmap(panel_handle, offsetx1, offsety1, offsetx2 + 1, offsety2 + 1, px_map);
}
#if CONFIG_EXAMPLE_LCD_TOUCH_ENABLED
static void example_lvgl_touch_cb(lv_indev_drv_t * drv, lv_indev_data_t * data)
static void example_lvgl_touch_cb(lv_indev_t * indev, 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);
esp_lcd_touch_handle_t touch_pad = lv_indev_get_user_data(indev);
esp_lcd_touch_read_data(touch_pad);
/* Get coordinates */
bool touchpad_pressed = esp_lcd_touch_get_coordinates(drv->user_data, touchpad_x, touchpad_y, NULL, &touchpad_cnt, 1);
bool touchpad_pressed = esp_lcd_touch_get_coordinates(touch_pad, touchpad_x, touchpad_y, NULL, &touchpad_cnt, 1);
if (touchpad_pressed && touchpad_cnt > 0) {
data->point.x = touchpad_x[0];
@ -170,44 +153,23 @@ static void example_increase_lvgl_tick(void *arg)
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;
uint32_t time_till_next_ms = 0;
uint32_t time_threshold_ms = 1000 / CONFIG_FREERTOS_HZ;
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));
_lock_acquire(&lvgl_api_lock);
time_till_next_ms = lv_timer_handler();
_lock_release(&lvgl_api_lock);
// in case of triggering a task watch dog time out
time_till_next_ms = MAX(time_till_next_ms, time_threshold_ms);
usleep(1000 * time_till_next_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,
@ -236,8 +198,6 @@ void app_main(void)
.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));
@ -266,6 +226,49 @@ void app_main(void)
// 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));
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();
// create a lvgl display
lv_display_t *display = lv_display_create(EXAMPLE_LCD_H_RES, EXAMPLE_LCD_V_RES);
// 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
size_t draw_buffer_sz = EXAMPLE_LCD_H_RES * EXAMPLE_LVGL_DRAW_BUF_LINES * sizeof(lv_color16_t);
void *buf1 = spi_bus_dma_memory_alloc(LCD_HOST, draw_buffer_sz, 0);
assert(buf1);
void *buf2 = spi_bus_dma_memory_alloc(LCD_HOST, draw_buffer_sz, 0);
assert(buf2);
// initialize LVGL draw buffers
lv_display_set_buffers(display, buf1, buf2, draw_buffer_sz, LV_DISPLAY_RENDER_MODE_PARTIAL);
// associate the mipi panel handle to the display
lv_display_set_user_data(display, panel_handle);
// set color depth
lv_display_set_color_format(display, LV_COLOR_FORMAT_RGB565);
// set the callback which can copy the rendered image to an area of the display
lv_display_set_flush_cb(display, example_lvgl_flush_cb);
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));
ESP_LOGI(TAG, "Register io panel event callback for LVGL flush ready notification");
const esp_lcd_panel_io_callbacks_t cbs = {
.on_color_trans_done = example_notify_lvgl_flush_ready,
};
/* Register done callback */
ESP_ERROR_CHECK(esp_lcd_panel_io_register_event_callbacks(io_handle, &cbs, display));
#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_STMPE610_CONFIG(EXAMPLE_PIN_NUM_TOUCH_CS);
@ -283,68 +286,27 @@ void app_main(void)
.mirror_y = 0,
},
};
esp_lcd_touch_handle_t tp = NULL;
#if CONFIG_EXAMPLE_LCD_TOUCH_CONTROLLER_STMPE610
ESP_LOGI(TAG, "Initialize touch controller STMPE610");
ESP_ERROR_CHECK(esp_lcd_touch_new_spi_stmpe610(tp_io_handle, &tp_cfg, &tp));
#endif // CONFIG_EXAMPLE_LCD_TOUCH_CONTROLLER_STMPE610
#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);
static lv_indev_t *indev;
indev = lv_indev_create(); // Input device driver (Touch)
lv_indev_set_type(indev, LV_INDEV_TYPE_POINTER);
lv_indev_set_display(indev, display);
lv_indev_set_user_data(indev, tp);
lv_indev_set_read_cb(indev, example_lvgl_touch_cb);
#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();
}
_lock_acquire(&lvgl_api_lock);
example_lvgl_demo_ui(display);
_lock_release(&lvgl_api_lock);
}

6
examples/peripherals/lcd/spi_lcd_touch/sdkconfig.defaults
View File

@ -1,3 +1,3 @@
CONFIG_LV_USE_USER_DATA=y
CONFIG_LV_COLOR_16_SWAP=y
CONFIG_LV_COLOR_DEPTH_16=y
CONFIG_LV_CONF_SKIP=y
CONFIG_LV_USE_OBSERVER=y
CONFIG_LV_USE_SYSMON=y