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https://gitcode.com/gh_mirrors/es/esp32-opencv.git
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f5896a3609
- For now, the example gets an image from the camera and puts it on the LCD - TODO: image is rotated and refresh rate not good
74 lines
2.2 KiB
C
74 lines
2.2 KiB
C
// Copyright 2015-2018 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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/* FreeRTOS includes */
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#include "freertos/FreeRTOS.h"
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#include "freertos/timers.h"
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/* LVGL includes */
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#include "iot_lvgl.h"
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#include "app_screen.h"
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// wait for execute lv_task_handler and lv_tick_inc to avoid some widget don't refresh.
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#define LVGL_INIT_DELAY 100 // unit ms
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static void lv_tick_timercb(void *timer)
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{
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/* Initialize a Timer for 1 ms period and
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* in its interrupt call
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* lv_tick_inc(1); */
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lv_tick_inc(1);
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}
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static void lv_task_timercb(void *timer)
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{
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/* Periodically call this function.
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* The timing is not critical but should be between 1..10 ms */
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lv_task_handler();
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}
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void lvgl_init()
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{
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/* LittlevGL work fine only when CONFIG_FREERTOS_HZ is 1000HZ */
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assert(CONFIG_FREERTOS_HZ == 1000);
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/* Initialize LittlevGL */
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lv_init();
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esp_timer_create_args_t timer_conf = {
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.callback = lv_tick_timercb,
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.name = "lv_tick_timer"
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};
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esp_timer_handle_t g_wifi_connect_timer = NULL;
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esp_timer_create(&timer_conf, &g_wifi_connect_timer);
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esp_timer_start_periodic(g_wifi_connect_timer, 1 * 1000U);
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/* Display interface */
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lvgl_lcd_hal_init();
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esp_timer_create_args_t lv_task_timer_conf = {
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.callback = lv_task_timercb,
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.name = "lv_task_timer"
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};
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esp_timer_handle_t lv_task_timer = NULL;
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esp_timer_create(&lv_task_timer_conf, &lv_task_timer);
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esp_timer_start_periodic(lv_task_timer, 5 * 1000U);
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vTaskDelay(LVGL_INIT_DELAY / portTICK_PERIOD_MS); // wait for execute lv_task_handler and lv_tick_inc to avoid some widget don't refresh.
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} |