{"id":101400,"date":"2021-09-25T10:22:59","date_gmt":"2021-09-25T08:22:59","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/proekt-elk-razvivaet-kompaktnyj-javascript-dvizhok-dlya-mikrokontrollerov"},"modified":"2021-09-25T10:22:59","modified_gmt":"2021-09-25T08:22:59","slug":"proekt-elk-razvivaet-kompaktnyj-javascript-dvizhok-dlya-mikrokontrollerov","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/news\/proekt-elk-razvivaet-kompaktnyj-javascript-dvizhok-dlya-mikrokontrollerov","title":{"rendered":"Proiectul elk dezvolt\u0103 un motor JavaScript compact pentru microcontrolere","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

A fost lansat\u0103 o nou\u0103 versiune a motorului JavaScript elk 2.0.9, destinat utiliz\u0103rii \u00een sisteme cu resurse limitate, cum ar fi microcontrolerele, inclusiv pl\u0103cile ESP32 \u0219i Arduino Nano cu 2 KB RAM \u0219i 30 KB Flash. Pentru a rula ma\u0219ina virtual\u0103 furnizat\u0103, sunt suficiente 100 de octe\u021bi de memorie \u0219i 20 KB de spa\u021biu pe stocare. Codul proiectului este scris \u00een C \u0219i este distribuit sub licen\u021ba GPLv2. Pentru a compila proiectul, este suficient un compilator C - nu sunt utilizate dependen\u021be suplimentare. Proiectul este dezvoltat de c\u0103tre dezvoltatorii sistemului de operare pentru dispozitive IoT Mongoose OS, motorul JavaScript mJS \u0219i \u00eencorporatul. servere web<\/a> Mongoose (utilizat \u00een produsele unor companii precum Siemens, Schneider Electric, Broadcom, Bosch, Google, Samsung \u0219i Qualcomm). <\/p>\n

Principalul scop al Elk este crearea firmware-urilor pentru microcontrolere \u00een limbajul JavaScript, care \u00eendeplinesc diverse sarcini de automatizare. Motorul este, de asemenea, potrivit pentru \u00eencorporarea handler-ilor \u00een limbajul JavaScript \u00een aplica\u021bii scrise \u00een C\/C++. Pentru a utiliza motorul \u00een propriul cod, este suficient s\u0103 plasa\u021bi \u00een arborele surselor fi\u0219ierul elk.c, s\u0103 include\u021bi fi\u0219ierul de antet elk.h \u0219i s\u0103 folosi\u021bi apelul js_eval. Este permis apelul din scripturile JavaScript a func\u021biilor definite \u00een codul C\/C++ \u0219i invers. Codul JavaScript ruleaz\u0103 \u00eentr-un mediu protejat \u0219i izolat de codul principal, folosind un interpret care nu genereaz\u0103 bytecode \u0219i nu folose\u0219te alocarea dinamic\u0103 de memorie. <\/p>\n

\u00cen Elk este implementat un subset mic, dar suficient pentru a crea scenarii de lucru, din specifica\u021bia Ecmascript 6. \u00cen special, sunt suportate un set de baz\u0103 de operatori \u0219i tipuri, dar nu exist\u0103 suport pentru tablouri, prototipuri, expresii this, new \u0219i delete. \u00cen loc de var \u0219i const, se recomand\u0103 utilizarea let, iar \u00een loc de do, switch \u0219i for - while. Nu este furnizat\u0103 o bibliotec\u0103 standard, adic\u0103 nu exist\u0103 asemenea obiecte precum Date, Regexp, Function, String \u0219i Number.
\n
Sursa: opennet.ro<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0414\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u043d\u043e\u0432\u044b\u0439 \u0432\u044b\u043f\u0443\u0441\u043a JavaScript-\u0434\u0432\u0438\u0436\u043a\u0430 elk 2.0.9, \u043d\u0430\u0446\u0435\u043b\u0435\u043d\u043d\u043e\u0433\u043e \u043d\u0430 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445 \u0441 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u043d\u044b\u043c\u0438 \u0440\u0435\u0441\u0443\u0440\u0441\u0430\u043c\u0438, \u0442\u0430\u043a\u0438\u043c\u0438 \u043a\u0430\u043a \u043c\u0438\u043a\u0440\u043e\u043a\u043e\u043d\u0442\u0440\u043e\u043b\u043b\u0435\u0440\u044b, \u0432\u043a\u043b\u044e\u0447\u0430\u044f \u043f\u043b\u0430\u0442\u044b ESP32 \u0438 Arduino Nano \u0441 2 \u041a\u0411 \u041e\u0417\u0423 \u0438 30\u041a\u0411 Flash. \u0414\u043b\u044f \u0440\u0430\u0431\u043e\u0442\u044b 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[…]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-101400","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Proiectul elk dezvolt\u0103 un motor JavaScript compact pentru microcontrolere | ProHoster","description":"A ap\u0103rut o nou\u0103 versiune a motorului JavaScript elk 2.0.9, destinat utiliz\u0103rii \u00een sisteme cu resurse limitate, cum ar fi microcontrolerele, inclusiv pl\u0103cile ESP32 \u0219i Arduino Nano cu 2 KB RAM \u0219i 30 KB 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