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76 lines
1.5 KiB
C
76 lines
1.5 KiB
C
/**
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* @file lv_async.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_async.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 lv_async_task_cb(lv_task_t *task);
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/**********************
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* STATIC VARIABLES
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**********************/
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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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lv_res_t lv_async_call(lv_async_cb_t async_xcb, void * user_data)
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{
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/*Allocate an info structure */
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lv_async_info_t *info = lv_mem_alloc(sizeof(lv_async_info_t));
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if(info == NULL)
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return LV_RES_INV;
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/* Create a new task */
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/* Use highest priority so that it will run before a refresh */
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lv_task_t *task = lv_task_create(lv_async_task_cb, 0, LV_TASK_PRIO_HIGHEST, info);
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if(task == NULL) {
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lv_mem_free(info);
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return LV_RES_INV;
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}
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info->cb = async_xcb;
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info->user_data = user_data;
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/* Set the task's user data */
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task->user_data = info;
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lv_task_once(task);
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return LV_RES_OK;
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}
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/**********************
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* STATIC FUNCTIONS
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**********************/
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static void lv_async_task_cb(lv_task_t *task)
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{
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lv_async_info_t *info = (lv_async_info_t *)task->user_data;
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info->cb(info->user_data);
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lv_mem_free(info);
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}
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