mirror of
https://github.com/lvgl/lvgl.git
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97 lines
2.3 KiB
C
97 lines
2.3 KiB
C
/**
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* @file lv_example_osal.c
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*
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*/
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/*********************
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* INCLUDES
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*********************/
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#include "../../lv_examples.h"
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#if LV_BUILD_EXAMPLES
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#include "../../../lvgl_private.h"
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/*********************
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* DEFINES
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*********************/
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/**********************
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* TYPEDEFS
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**********************/
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/**********************
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* STATIC PROTOTYPES
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**********************/
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static void counter_button_event_cb(lv_event_t * e);
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static void increment_thread_entry(void * user_data);
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/**********************
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* STATIC VARIABLES
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**********************/
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static lv_thread_sync_t press_sync;
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static lv_thread_t increment_thread;
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/**********************
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* MACROS
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**********************/
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/**********************
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* GLOBAL FUNCTIONS
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**********************/
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void lv_example_osal(void)
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{
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lv_obj_t * counter_button;
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counter_button = lv_button_create(lv_screen_active());
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lv_obj_align(counter_button, LV_ALIGN_CENTER, 0, -15);
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lv_obj_add_event_cb(counter_button, counter_button_event_cb, LV_EVENT_CLICKED, NULL);
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if(lv_thread_sync_init(&press_sync) != LV_RESULT_OK) {
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LV_LOG_ERROR("Error initializing thread sync");
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}
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if(lv_thread_init(&increment_thread, LV_THREAD_PRIO_MID, increment_thread_entry, 2048, NULL) != LV_RESULT_OK) {
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LV_LOG_ERROR("Error initializing thread");
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}
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}
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/**********************
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* STATIC FUNCTIONS
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**********************/
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static void counter_button_event_cb(lv_event_t * e)
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{
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LV_UNUSED(e);
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if(lv_thread_sync_signal(&press_sync) != LV_RESULT_OK) {
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LV_LOG_ERROR("Error signaling thread sync");
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}
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}
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static void increment_thread_entry(void * user_data)
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{
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LV_UNUSED(user_data);
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lv_obj_t * counter_label;
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uint32_t press_count = 0;
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lv_lock();
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counter_label = lv_label_create(lv_scr_act());
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lv_obj_align(counter_label, LV_ALIGN_CENTER, 0, 0);
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lv_label_set_text_fmt(counter_label, "Pressed %" LV_PRIu32 " times", press_count);
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lv_unlock();
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while(true) {
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if(lv_thread_sync_wait(&press_sync) != LV_RESULT_OK) {
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LV_LOG_ERROR("Error awaiting thread sync");
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}
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press_count += 1;
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lv_lock();
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lv_label_set_text_fmt(counter_label, "Pressed %" LV_PRIu32 " times", press_count);
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lv_unlock();
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}
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}
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#endif
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