{"id":98595,"date":"2026-09-01T07:16:47","date_gmt":"2026-08-31T23:16:47","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/98595.html"},"modified":"2026-09-01T07:16:47","modified_gmt":"2026-08-31T23:16:47","slug":"%ef%bc%88%e4%ba%94%ef%bc%89lvgl-8-3-11-%e7%a7%bb%e6%a4%8d%ef%bc%9afreertos-%e6%93%8d%e4%bd%9c%e7%b3%bb%e7%bb%9f%e9%80%82%e9%85%8d","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/98595.html","title":{"rendered":"\uff08\u4e94\uff09LVGL 8.3.11 \u79fb\u690d\uff1aFreeRTOS \u64cd\u4f5c\u7cfb\u7edf\u9002\u914d"},"content":{"rendered":"<h2>&#xff08;\u4e94&#xff09;LVGL 8.3.11 \u79fb\u690d&#xff1a;FreeRTOS \u64cd\u4f5c\u7cfb\u7edf\u9002\u914d<\/h2>\n<p>\u76ee\u6807&#xff1a;\u628a LVGL \u5b89\u5168\u5730\u653e\u8fdb FreeRTOS \u591a\u4efb\u52a1\u73af\u5883&#xff0c;\u505a\u5230\u754c\u9762\u6d41\u7545\u3001\u4e1a\u52a1\u5e76\u884c\u3001\u4e92\u4e0d\u8e29\u5185\u5b58\u3002<\/p>\n<hr \/>\n<h3>1. \u539f\u7406\u7bc7&#xff1a;LVGL \u7684\u7ebf\u7a0b\u6a21\u578b\u7ea6\u675f<\/h3>\n<p>LVGL 8.3 \u4e0d\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\u3002\u5176\u5185\u90e8\u7684\u5bf9\u8c61\u6811\u3001\u6837\u5f0f\u7f13\u5b58\u3001\u5b9a\u65f6\u5668\u94fe\u8868\u90fd\u6ca1\u6709\u9501\u4fdd\u62a4\u3002\u56e0\u6b64\u53ea\u6709\u4e24\u6761\u5408\u6cd5\u8def\u7ebf&#xff1a;<\/p>\n<li>\u5355\u4e0a\u4e0b\u6587\u8def\u7ebf&#xff1a;\u6240\u6709 lv_* API&#xff08;\u5305\u62ec lv_timer_handler()&#xff09;\u90fd\u5728\u540c\u4e00\u4e2a\u4efb\u52a1\u91cc\u8c03\u7528&#xff1b;<\/li>\n<li>\u4e92\u65a5\u9501\u8def\u7ebf&#xff1a;\u4efb\u4f55\u4efb\u52a1\u8c03\u7528 lv_* \u524d\u90fd\u5148\u62a2\u540c\u4e00\u628a\u4e92\u65a5\u9501&#xff0c;\u8c03\u7528\u5b8c\u91ca\u653e\u3002<\/li>\n<p>\u5b9e\u9645\u5de5\u7a0b\u51e0\u4e4e\u90fd\u7528\u8def\u7ebf 2&#xff1a;UI \u6e32\u67d3\u5728\u4e13\u7528\u4efb\u52a1&#xff0c;\u4e1a\u52a1\u4efb\u52a1&#xff08;\u4f20\u611f\u5668\u3001\u901a\u4fe1&#xff09;\u8981\u66f4\u65b0\u754c\u9762\u65f6\u6301\u9501\u8c03 API\u3002<\/p>\n<p>\u53e6\u5916\u4e24\u4e2a\u786c\u6027\u7ea6\u675f&#xff1a;<\/p>\n<ul>\n<li>lv_timer_handler() \u7981\u6b62\u5728\u4e2d\u65ad\u91cc\u8c03\u7528&#xff1b;<\/li>\n<li>lv_tick_inc() \u53ef\u4ee5\u5728\u4e2d\u65ad\u91cc\u8c03\u7528&#xff08;\u5b83\u53ea\u505a\u4e00\u4e2a\u8ba1\u6570\u7d2f\u52a0&#xff0c;\u662f\u4e2d\u65ad\u5b89\u5168\u7684&#xff09;&#xff0c;\u4f46\u8981\u4fdd\u8bc1\u8c03\u5ea6\u5668\u542f\u52a8\u540e SysTick \u4ecd\u7136\u6b63\u5e38\u5de5\u4f5c\u3002<\/li>\n<\/ul>\n<h4>\u4efb\u52a1\u6a21\u578b\u603b\u89c8<\/h4>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260831231646-6a960b5e8f1dc.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<hr \/>\n<h3>2. \u5e94\u7528\u7bc7&#xff1a;\u5b8c\u6574\u9002\u914d\u4ee3\u7801<\/h3>\n<h4>2.1 \u65f6\u57fa&#xff1a;SysTick \u4e0e RTOS \u5171\u7528<\/h4>\n<p>FreeRTOS \u63a5\u7ba1 SysTick \u540e&#xff0c;\u5728 HAL \u7684\u56de\u8c03\u4e2d\u8865\u5582 LVGL \u8282\u62cd&#xff1a;<\/p>\n<p><span class=\"token comment\">\/* stm32f4xx_hal_timebase \u6216 it.c *\/<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">HAL_SYSTICK_Callback<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">lv_tick_inc<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>    <span class=\"token comment\">\/* \u8c03\u5ea6\u5668\u8fd0\u884c\u540e\u8be5\u56de\u8c03\u6bcf 1ms \u88ab\u8c03\u4e00\u6b21 *\/<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u6216\u8005\u5e72\u8106\u7528\u505a\u6cd5 B&#xff08;lv_conf.h&#xff09;&#xff1a;<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name\">LV_TICK_CUSTOM<\/span> <span class=\"token expression\"><span class=\"token number\">1<\/span><\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name\">LV_TICK_CUSTOM_INCLUDE<\/span> <span class=\"token string\">&#034;FreeRTOS.h&#034;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name\">LV_TICK_CUSTOM_SYS_TIME_EXPR<\/span> <span class=\"token expression\"><span class=\"token punctuation\">(<\/span><span class=\"token function\">xTaskGetTickCount<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">*<\/span> portTICK_PERIOD_MS<span class=\"token punctuation\">)<\/span><\/span><\/span><\/p>\n<h4>2.2 GUI \u4e92\u65a5\u9501\u4e0e\u5c01\u88c5\u5b8f<\/h4>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&#034;FreeRTOS.h&#034;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&#034;semphr.h&#034;<\/span><\/span><\/p>\n<p><span class=\"token keyword\">static<\/span> SemaphoreHandle_t gui_mutex<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">void<\/span> <span class=\"token function\">gui_lock<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span>   <span class=\"token punctuation\">{<\/span> <span class=\"token function\">xSemaphoreTake<\/span><span class=\"token punctuation\">(<\/span>gui_mutex<span class=\"token punctuation\">,<\/span> portMAX_DELAY<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">gui_unlock<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token function\">xSemaphoreGive<\/span><span class=\"token punctuation\">(<\/span>gui_mutex<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><\/p>\n<p>\u4e1a\u52a1\u4efb\u52a1\u4e2d\u66f4\u65b0\u754c\u9762&#xff1a;<\/p>\n<p><span class=\"token keyword\">void<\/span> <span class=\"token function\">sensor_task<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span> <span class=\"token operator\">*<\/span>arg<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">float<\/span> temp<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">char<\/span> buf<span class=\"token punctuation\">[<\/span><span class=\"token number\">32<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">;<\/span><span class=\"token punctuation\">;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        temp <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">ADC_ReadTemperature<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">snprintf<\/span><span class=\"token punctuation\">(<\/span>buf<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span>buf<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;\u6e29\u5ea6: %.1f \u2103&#034;<\/span><span class=\"token punctuation\">,<\/span> temp<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token function\">gui_lock<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">lv_label_set_text<\/span><span class=\"token punctuation\">(<\/span>label_temp<span class=\"token punctuation\">,<\/span> buf<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">lv_bar_set_value<\/span><span class=\"token punctuation\">(<\/span>bar_temp<span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">)<\/span>temp<span class=\"token punctuation\">,<\/span> LV_ANIM_ON<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">gui_unlock<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token function\">vTaskDelay<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">pdMS_TO_TICKS<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">500<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>2.3 LVGL \u4efb\u52a1<\/h4>\n<p><span class=\"token keyword\">void<\/span> <span class=\"token function\">lvgl_task<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span> <span class=\"token operator\">*<\/span>arg<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">lv_init<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">lv_port_disp_init<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">lv_port_indev_init<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/* lv_port_fs_init(); *\/<\/span><br \/>\n    gui_mutex <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">xSemaphoreCreateMutex<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/* UI \u521d\u59cb\u5316\u4e5f\u5728\u672c\u4efb\u52a1\u5b8c\u6210&#xff0c;\u5929\u7136\u5355\u4e0a\u4e0b\u6587 *\/<\/span><br \/>\n    <span class=\"token function\">ui_create_all<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">;<\/span><span class=\"token punctuation\">;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token function\">gui_lock<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">uint32_t<\/span> next <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">lv_timer_handler<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>   <span class=\"token comment\">\/* \u8fd4\u56de\u8ddd\u4e0b\u6b21\u9700\u5524\u9192\u7684 ms *\/<\/span><br \/>\n        <span class=\"token function\">gui_unlock<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        next <span class=\"token operator\">&#061;<\/span> next <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">5<\/span> <span class=\"token operator\">?<\/span> <span class=\"token number\">5<\/span> <span class=\"token operator\">:<\/span> <span class=\"token punctuation\">(<\/span>next <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">20<\/span> <span class=\"token operator\">?<\/span> <span class=\"token number\">20<\/span> <span class=\"token operator\">:<\/span> next<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">vTaskDelay<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">pdMS_TO_TICKS<\/span><span class=\"token punctuation\">(<\/span>next<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u5229\u7528 lv_timer_handler() \u7684\u8fd4\u56de\u503c\u52a8\u6001\u8c03\u6574\u5468\u671f&#xff1a;\u7a7a\u95f2\u65f6 20ms \u7701 CPU&#xff0c;\u52a8\u753b\u65f6 5ms \u4fdd\u6d41\u7545\u3002<\/p>\n<h5>\u5173\u952e\u7ec6\u8282\u89e3\u6790<\/h5>\n<p>\u2460 LVGL \u4efb\u52a1\u81ea\u5df1\u4e5f\u62a2 gui_mutex&#xff0c;\u662f\u4e0d\u662f\u591a\u6b64\u4e00\u4e3e&#xff1f;<\/p>\n<p>\u4e0d\u662f\u3002\u9501\u7684\u8bed\u4e49\u662f&#034;\u540c\u4e00\u65f6\u523b\u53ea\u6709\u4e00\u4e2a\u4e0a\u4e0b\u6587\u5728\u78b0 LVGL&#034;&#xff0c;\u800c\u4e0d\u662f&#034;\u4fdd\u62a4 LVGL \u4efb\u52a1\u81ea\u5df1&#034;\u3002\u5982\u679c LVGL \u4efb\u52a1\u4e0d\u6301\u9501\u5c31\u8dd1 lv_timer_handler()&#xff0c;\u4e1a\u52a1\u4efb\u52a1\u5c31\u53ef\u80fd\u5728\u6e32\u67d3\u8fdb\u884c\u5230\u4e00\u534a\u65f6\u6301\u9501\u8fdb\u6765\u6539\u63a7\u4ef6\u2014\u2014\u5bf9\u8c61\u6811\u6b63\u88ab\u904d\u5386\u5374\u88ab\u4fee\u6539&#xff0c;\u8fd9\u662f\u6bd4&#034;\u5fd8\u52a0\u9501&#034;\u66f4\u9690\u853d\u7684\u5d29\u6e83\u6e90\u3002\u89c4\u5219\u5fc5\u987b\u65e0\u4f8b\u5916&#xff1a;\u4efb\u4f55 lv_* \u8c03\u7528&#xff08;\u542b lv_timer_handler&#xff09;\u90fd\u5728\u9501\u5185\u3002UI \u521d\u59cb\u5316\u653e\u5728\u672c\u4efb\u52a1\u5185\u3001\u5176\u4ed6\u4efb\u52a1\u542f\u52a8\u524d\u5b8c\u6210&#xff0c;\u5219\u662f\u5229\u7528\u65f6\u5e8f\u628a\u521d\u59cb\u5316\u671f\u5929\u7136\u53d8\u6210\u5355\u4e0a\u4e0b\u6587\u3002<\/p>\n<p>\u2461 \u4e3a\u4ec0\u4e48\u7528 lv_timer_handler() \u7684\u8fd4\u56de\u503c\u505a\u5ef6\u65f6&#xff0c;\u800c\u4e0d\u662f\u56fa\u5b9a vTaskDelay(5)&#xff1f;<\/p>\n<p>\u8fd4\u56de\u503c\u662f LVGL \u7b97\u51fa\u7684&#034;\u8ddd\u4e0b\u4e00\u4e2a\u5f85\u529e\u4e8b\u9879\u8fd8\u6709\u591a\u5c11 ms&#034;&#xff1a;\u6709\u52a8\u753b\u8dd1\u65f6\u5b83\u8fd4\u56de 1~5ms&#xff0c;\u5b8c\u5168\u7a7a\u95f2\u65f6\u53ef\u80fd\u8fd4\u56de\u51e0\u767e ms\u3002\u56fa\u5b9a 5ms \u8f6e\u8be2\u610f\u5473\u7740\u754c\u9762\u9759\u6b62\u65f6 LVGL \u4efb\u52a1\u4ecd\u4ee5 200Hz \u7a7a\u8f6c\u5524\u9192&#xff1b;\u7528\u8fd4\u56de\u503c\u52a8\u6001\u5ef6\u65f6&#xff0c;\u7a7a\u95f2\u671f\u5524\u9192\u9891\u7387\u964d\u4e00\u4e2a\u6570\u91cf\u7ea7&#xff0c;\u6574\u673a\u529f\u8017\u548c CPU \u5360\u7528\u90fd\u53d7\u76ca\u3002\u4ee3\u7801\u91cc\u94b3\u4f4d\u5230 [5, 20]ms \u662f\u9632\u6b62\u6781\u7aef\u503c&#xff1a;\u52a8\u753b\u6700\u5bc6\u65f6\u4e0d\u4f4e\u4e8e 5ms&#xff08;\u4fdd\u5e27\u7387\u4e0a\u9650 200FPS \u65e0\u610f\u4e49&#xff09;&#xff0c;\u7a7a\u95f2\u65f6\u4e0d\u8d85\u8fc7 20ms&#xff08;\u4fdd\u89e6\u6478\u54cd\u5e94&#xff09;\u3002<\/p>\n<p>\u2462 lv_tick_inc() \u4e3a\u4ec0\u4e48\u80fd\u653e\u4e2d\u65ad\u91cc&#xff0c;lv_timer_handler() \u5374\u4e0d\u884c&#xff1f;<\/p>\n<p>lv_tick_inc(1) \u53ea\u505a\u4e00\u4ef6\u4e8b&#xff1a;\u7ed9\u4e00\u4e2a\u5168\u5c40\u8ba1\u6570\u5668\u52a0 1\u3002\u65e0\u94fe\u8868\u3001\u65e0\u5806\u64cd\u4f5c\u3001\u65e0\u53ef\u91cd\u5165\u98ce\u9669&#xff0c;\u4e2d\u65ad\u5b89\u5168\u3002\u800c lv_timer_handler() \u5185\u90e8\u8981\u904d\u5386\u5bf9\u8c61\u6811\u3001\u5206\u914d\/\u91ca\u653e\u5806\u5185\u5b58\u3001\u89e6\u53d1\u7528\u6237\u56de\u8c03\u2014\u2014\u4efb\u4f55\u4e00\u6b65\u88ab\u4e2d\u65ad\u6253\u65ad\u540e\u91cd\u5165\u90fd\u4f1a\u7834\u574f\u5185\u90e8\u72b6\u6001\u3002\u8fd9\u662f&#034;LVGL API \u53ea\u6709\u6781\u5c11\u6570\u80fd\u8fdb ISR&#034;\u7684\u6839\u672c\u539f\u56e0&#xff0c;\u540c\u7c7b\u4f8b\u5916\u53ea\u6709 lv_disp_flush_ready()&#xff08;\u89c1\u7b2c 02 \u7bc7&#xff09;\u3002<\/p>\n<p>\u2463 \u6808 4096 \u5b57&#xff08;16KB&#xff09;\u7684\u4f9d\u636e\u662f\u4ec0\u4e48&#xff1f;<\/p>\n<p>lv_timer_handler() \u7684\u8c03\u7528\u94fe\u5f88\u6df1&#xff1a;\u63a7\u4ef6\u6e32\u67d3 \u2192 \u6837\u5f0f\u8ba1\u7b97 \u2192 \u5b57\u4f53\u6e32\u67d3 \u2192 \u56fe\u7247\u89e3\u7801\u5c42\u5c42\u5d4c\u5957&#xff0c;\u6bcf\u5c42\u7684\u5c40\u90e8\u53d8\u91cf&#xff08;lv_area_t\u3001lv_draw_*_dsc_t \u7ed3\u6784\u4f53\u90fd\u6709\u51e0\u5341\u5b57\u8282&#xff09;\u7d2f\u8ba1\u53ef\u89c2&#xff1b;lv_demo_widgets \u8fd9\u7c7b\u590d\u6742\u754c\u9762\u5b9e\u6d4b\u5cf0\u503c\u5728 4~8KB\u3002\u518d\u53e0\u52a0 FreeType \u6216 PNG \u89e3\u7801\u4f1a\u66f4\u9ad8\u30024096 \u5b57&#xff08;&#061;16KB&#xff0c;\u6ce8\u610f FreeRTOS \u6808\u5355\u4f4d\u662f\u5b57\u4e0d\u662f\u5b57\u8282&#xff09;\u662f\u7559\u8db3\u4f59\u91cf\u7684\u8d77\u70b9\u503c&#xff0c;\u5b9a\u578b\u524d\u52a1\u5fc5\u7528 uxTaskGetStackHighWaterMark() \u5b9e\u6d4b\u2014\u2014\u5b83\u8fd4\u56de\u7684\u662f&#034;\u5386\u53f2\u6700\u4f4e\u5269\u4f59\u91cf&#034;&#xff0c;\u662f\u6700\u53ef\u9760\u7684\u6808\u6c34\u4f4d\u8bc1\u636e\u3002<\/p>\n<h4>2.4 \u4efb\u52a1\u521b\u5efa\u53c2\u6570&#xff08;\u63a8\u8350\u8d77\u70b9&#xff09;<\/h4>\n<p><span class=\"token function\">xTaskCreate<\/span><span class=\"token punctuation\">(<\/span>lvgl_task<span class=\"token punctuation\">,<\/span>   <span class=\"token string\">&#034;lvgl&#034;<\/span><span class=\"token punctuation\">,<\/span>   <span class=\"token number\">4096<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">,<\/span> tskIDLE_PRIORITY <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">xTaskCreate<\/span><span class=\"token punctuation\">(<\/span>sensor_task<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;sensor&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">1024<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">,<\/span> tskIDLE_PRIORITY <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">xTaskCreate<\/span><span class=\"token punctuation\">(<\/span>comm_task<span class=\"token punctuation\">,<\/span>   <span class=\"token string\">&#034;comm&#034;<\/span><span class=\"token punctuation\">,<\/span>   <span class=\"token number\">2048<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">,<\/span> tskIDLE_PRIORITY <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<table>\n<tr>\u53c2\u6570\u5efa\u8bae\u4f9d\u636e<\/tr>\n<tbody>\n<tr>\n<td>LVGL \u4efb\u52a1\u6808<\/td>\n<td>2048~4096 \u5b57&#xff08;8~16KB&#xff09;<\/td>\n<td>lv_demo_widgets \u7684\u590d\u6742\u63a7\u4ef6\u5d4c\u5957\u5f88\u6df1&#xff1b;FreeType\/\u56fe\u7247\u89e3\u7801\u53e6\u7b97<\/td>\n<\/tr>\n<tr>\n<td>LVGL \u4efb\u52a1\u4f18\u5148\u7ea7<\/td>\n<td>\u9ad8\u4e8e\u666e\u901a\u4e1a\u52a1\u4efb\u52a1<\/td>\n<td>\u4fdd\u8bc1\u89e6\u6478\u54cd\u5e94\u53ca\u65f6<\/td>\n<\/tr>\n<tr>\n<td>\u4e1a\u52a1\u4efb\u52a1\u4f18\u5148\u7ea7<\/td>\n<td>\u540c\u7ea7\u6216\u66f4\u4f4e<\/td>\n<td>\u9632\u6b62\u9ad8\u4f18\u5148\u4e1a\u52a1\u4efb\u52a1\u997f\u6b7b UI<\/td>\n<\/tr>\n<tr>\n<td>FreeRTOS \u5806<\/td>\n<td>\u2265 30KB<\/td>\n<td>configTOTAL_HEAP_SIZE&#xff0c;\u4efb\u52a1\u6808 &#043; \u4fe1\u53f7\u91cf\u90fd\u4ece\u8fd9\u91cc\u51fa<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u6808\u7528\u91cf\u9a8c\u8bc1&#xff1a;uxTaskGetStackHighWaterMark() \u6253\u5370\u5269\u4f59\u6808&#xff0c;\u4f4e\u4e8e 15% \u5c31\u8be5\u52a0\u5927\u3002LVGL \u51fd\u6570\u5c40\u90e8\u6570\u7ec4\u8f83\u591a&#xff0c;\u6808\u6ea2\u51fa\u662f\u672c\u7bc7\u573a\u666f\u6700\u9ad8\u9891\u7684\u7384\u5b66\u6545\u969c\u6765\u6e90\u3002<\/p>\n<hr \/>\n<h3>3. \u5b9e\u8df5\u7bc7&#xff1a;\u5e76\u53d1\u9677\u9631\u4e0e\u5bf9\u7b56<\/h3>\n<h4>3.1 \u5178\u578b\u8e29\u5751\u573a\u666f<\/h4>\n<table>\n<tr>\u573a\u666f\u540e\u679c\u5bf9\u7b56<\/tr>\n<tbody>\n<tr>\n<td>\u4e1a\u52a1\u4efb\u52a1\u5fd8\u52a0\u9501\u76f4\u63a5 lv_label_set_text<\/td>\n<td>\u5076\u53d1\u82b1\u5c4f\/HardFault&#xff0c;\u96be\u590d\u73b0<\/td>\n<td>\u7edf\u4e00\u5c01\u88c5 gui_lock\/unlock&#xff0c;\u4ee3\u7801\u5ba1\u67e5<\/td>\n<\/tr>\n<tr>\n<td>\u6301\u9501\u671f\u95f4\u505a\u957f\u8017\u65f6\u64cd\u4f5c&#xff08;\u5982 SD \u8bfb\u5927\u56fe&#xff09;<\/td>\n<td>UI \u5361\u987f<\/td>\n<td>\u6587\u4ef6\u64cd\u4f5c\u653e\u9501\u5916&#xff0c;\u53ea\u6709 lv_img_set_src \u8fd9\u4e00\u6b65\u6301\u9501<\/td>\n<\/tr>\n<tr>\n<td>\u4e2d\u65ad\u91cc\u8c03 lv_*<\/td>\n<td>\u7acb\u5373\u6216\u968f\u673a\u5d29\u6e83<\/td>\n<td>\u4e2d\u65ad\u53ea\u53d1\u4fe1\u53f7\u91cf&#xff0c;\u4efb\u52a1\u91cc\u518d\u8c03 LVGL<\/td>\n<\/tr>\n<tr>\n<td>\u4e92\u65a5\u9501\u5728 LVGL \u4efb\u52a1\u5185\u4e5f\u62a2<\/td>\n<td>\u65e0\u95ee\u9898\u4f46\u591a\u4e00\u6b21\u5207\u6362&#xff1b;\u6ce8\u610f\u4e0d\u53ef\u91cd\u5165&#xff0c;\u6301\u9501\u540e\u518d lock \u4f1a\u6b7b\u9501<\/td>\n<td>LVGL \u4efb\u52a1\u5185\u90e8\u8fde\u7eed\u64cd\u4f5c\u6301\u4e00\u6b21\u9501\u5373\u53ef<\/td>\n<\/tr>\n<tr>\n<td>DMA2D \u4e2d\u65ad\u56de\u8c03\u91cc\u8c03 lv_disp_flush_ready<\/td>\n<td>\u5408\u6cd5&#xff08;8.3 \u5141\u8bb8&#xff09;&#xff0c;\u4f46\u8be5\u56de\u8c03\u4f18\u5148\u7ea7\u8981\u4f4e\u4e8e RTOS \u6700\u9ad8\u4e2d\u65ad\u4f18\u5148\u7ea7\u95e8\u9650<\/td>\n<td>LV_DISP_DEF_REFR_PERIOD \u5185\u4e0d\u518d\u5e76\u53d1\u5176\u4ed6 LVGL \u8c03\u7528\u5373\u53ef<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>3.2 \u4f18\u5148\u7ea7\u53cd\u8f6c\u63d0\u793a<\/h4>\n<p>GUI \u4e92\u65a5\u9501\u7528 FreeRTOS \u7684 xSemaphoreCreateMutex&#xff08;\u81ea\u5e26\u4f18\u5148\u7ea7\u7ee7\u627f&#xff09;&#xff0c;\u4e0d\u8981\u7528\u4e8c\u503c\u4fe1\u53f7\u91cf\u4ee3\u66ff\u2014\u2014\u4e8c\u503c\u4fe1\u53f7\u91cf\u6ca1\u6709\u4f18\u5148\u7ea7\u7ee7\u627f&#xff0c;\u9ad8\u4f18\u5148\u7684 LVGL \u4efb\u52a1\u53ef\u80fd\u88ab\u6301\u9501\u7684\u4f4e\u4f18\u5148\u4e1a\u52a1\u4efb\u52a1\u957f\u65f6\u95f4\u963b\u585e\u3002<\/p>\n<h4>3.3 \u4e0e\u6587\u4ef6\u7cfb\u7edf\u7684\u53e0\u52a0<\/h4>\n<p>FatFS \u5f00\u4e86 FF_FS_REENTRANT \u540e&#xff0c;LVGL \u4efb\u52a1\u8bfb\u56fe\u4e0e\u65e5\u5fd7\u4efb\u52a1\u5199\u65e5\u5fd7\u53ef\u4ee5\u5e76\u53d1&#xff1b;\u4f46 LVGL API \u8c03\u7528\u4ecd\u9700 gui_mutex\u2014\u2014\u4e24\u628a\u9501\u4fdd\u62a4\u7684\u5c42\u7ea7\u4e0d\u540c&#xff0c;\u4e0d\u51b2\u7a81\u3002\u6ce8\u610f\u52a0\u9501\u987a\u5e8f\u56fa\u5b9a&#xff08;\u5148 gui_mutex \u540e FatFS \u9501&#xff09;&#xff0c;\u907f\u514d\u4ea4\u53c9\u6b7b\u9501\u3002<\/p>\n<hr \/>\n<h3>4. \u88f8\u673a\u5bf9\u7167\u65b9\u6848<\/h3>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/* \u521d\u59cb\u5316\u540c\u4e0a *\/<\/span><br \/>\n    <span class=\"token class-name\">uint32_t<\/span> last <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">HAL_GetTick<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">;<\/span><span class=\"token punctuation\">;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token function\">HAL_GetTick<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span> last <span class=\"token operator\">&gt;&#061;<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            last <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">HAL_GetTick<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token function\">lv_timer_handler<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token comment\">\/* \u5176\u4ed6\u4e1a\u52a1&#xff1a;\u72b6\u6001\u673a\u5f62\u5f0f&#xff0c;\u7981\u6b62\u963b\u585e *\/<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u88f8\u673a\u7684\u672c\u8d28\u662f&#034;\u5355\u4efb\u52a1&#034;&#xff0c;\u5929\u7136\u6ee1\u8db3 LVGL \u7684\u5355\u4e0a\u4e0b\u6587\u7ea6\u675f&#xff1b;\u4ee3\u4ef7\u662f\u6240\u6709\u4e1a\u52a1\u5fc5\u987b\u5199\u6210\u975e\u963b\u585e\u72b6\u6001\u673a\u3002\u754c\u9762\u590d\u6742\u5ea6\u9ad8&#xff08;\u591a\u9875\u9762 &#043; \u52a8\u753b &#043; \u6587\u4ef6 IO&#xff09;\u65f6&#xff0c;RTOS \u7684\u5de5\u7a0b\u91cf\u53cd\u800c\u66f4\u5c0f\u3002<\/p>\n<hr \/>\n<h3>5. \u9a8c\u8bc1\u6e05\u5355<\/h3>\n<li>lv_demo_widgets() &#043; \u540e\u53f0\u4e1a\u52a1\u4efb\u52a1\u540c\u65f6\u8dd1&#xff0c;10 \u5206\u949f\u65e0\u5361\u987f\u3001\u65e0\u5d29\u6e83&#xff1b;<\/li>\n<li>\u793a\u6ce2\u5668\/\u65e5\u5fd7\u786e\u8ba4 lv_timer_handler \u5e73\u5747\u5468\u671f 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