113 lines
3.2 KiB
C
113 lines
3.2 KiB
C
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/* LVGL Example project
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*
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* Basic project to test LVGL on ESP32 based projects.
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*
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* This example code is in the Public Domain (or CC0 licensed, at your option.)
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*
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* Unless required by applicable law or agreed to in writing, this
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* software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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* CONDITIONS OF ANY KIND, either express or implied.
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*/
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "esp_freertos_hooks.h"
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#include "freertos/semphr.h"
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#include "esp_system.h"
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#include "driver/gpio.h"
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/* Littlevgl specific */
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#include "lvgl/lvgl.h"
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#include "lvgl_driver.h"
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//#include "lv_examples/lv_apps/demo/demo.h"
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#include "lv_examples/lv_apps/sysmon/sysmon.h"
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/*********************
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* DEFINES
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*********************/
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/**********************
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* STATIC PROTOTYPES
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**********************/
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static void IRAM_ATTR lv_tick_task(void *arg);
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/**********************
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* APPLICATION MAIN
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**********************
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void app_main() {
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//If you want to use a task to create the graphic, you NEED to create a Pinned task
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//Otherwise there can be problem such as memory corruption and so on
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xTaskCreatePinnedToCore(guiTask, "gui", 4096*2, NULL, 0, NULL, 1);
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}
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**/
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static void IRAM_ATTR lv_tick_task(void *arg) {
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(void) arg;
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lv_tick_inc(portTICK_RATE_MS);
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}
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//Creates a semaphore to handle concurrent call to lvgl stuff
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//If you wish to call *any* lvgl function from other threads/tasks
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//you should lock on the very same semaphore!
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SemaphoreHandle_t xGuiSemaphore;
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void guiTask() {
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xGuiSemaphore = xSemaphoreCreateMutex();
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lv_init();
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lvgl_driver_init();
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static lv_color_t buf1[DISP_BUF_SIZE];
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static lv_color_t buf2[DISP_BUF_SIZE];
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static lv_disp_buf_t disp_buf;
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lv_disp_buf_init(&disp_buf, buf1, buf2, DISP_BUF_SIZE);
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lv_disp_drv_t disp_drv;
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lv_disp_drv_init(&disp_drv);
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disp_drv.flush_cb = disp_driver_flush;
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disp_drv.buffer = &disp_buf;
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lv_disp_drv_register(&disp_drv);
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#if CONFIG_LVGL_TOUCH_CONTROLLER != TOUCH_CONTROLLER_NONE
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lv_indev_drv_t indev_drv;
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lv_indev_drv_init(&indev_drv);
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indev_drv.read_cb = touch_driver_read;
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indev_drv.type = LV_INDEV_TYPE_POINTER;
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lv_indev_drv_register(&indev_drv);
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#endif
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const esp_timer_create_args_t periodic_timer_args = {
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.callback = &lv_tick_task,
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/* name is optional, but may help identify the timer when debugging */
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.name = "periodic_gui"
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};
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esp_timer_handle_t periodic_timer;
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ESP_ERROR_CHECK(esp_timer_create(&periodic_timer_args, &periodic_timer));
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//On ESP32 it's better to create a periodic task instead of esp_register_freertos_tick_hook
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ESP_ERROR_CHECK(esp_timer_start_periodic(periodic_timer, 10*1000)); //10ms (expressed as microseconds)
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//demo_create();
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sysmon_create();
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while (1) {
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vTaskDelay(1);
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//Try to lock the semaphore, if success, call lvgl stuff
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if (xSemaphoreTake(xGuiSemaphore, (TickType_t)10) == pdTRUE) {
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lv_task_handler();
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xSemaphoreGive(xGuiSemaphore);
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}
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}
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//A task should NEVER return
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vTaskDelete(NULL);
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}
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