{"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\/fr\/blog\/news\/proekt-elk-razvivaet-kompaktnyj-javascript-dvizhok-dlya-mikrokontrollerov","title":{"rendered":"Le projet elk d\u00e9veloppe un moteur JavaScript compact pour microcontr\u00f4leurs.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Une nouvelle version du moteur JavaScript elk 2.0.9 est disponible, destin\u00e9 \u00e0 \u00eatre utilis\u00e9 dans des syst\u00e8mes \u00e0 ressources limit\u00e9es, tels que les microcontr\u00f4leurs, y compris les cartes ESP32 et Arduino Nano avec 2 Ko de RAM et 30 Ko de Flash. Pour faire fonctionner la machine virtuelle propos\u00e9e, il suffit de 100 octets de m\u00e9moire et de 20 Ko d'espace de stockage. Le code du projet est \u00e9crit en C et distribu\u00e9 sous la licence GPLv2. Pour compiler le projet, un compilateur C est suffisant \u2014 aucune d\u00e9pendance suppl\u00e9mentaire n'est requise. Le projet est d\u00e9velopp\u00e9 par les d\u00e9veloppeurs du syst\u00e8me d'exploitation pour appareils IoT Mongoose OS, du moteur JavaScript mJS et int\u00e9gr\u00e9. serveur web<\/a> Mongoose (utilis\u00e9 dans les produits d'entreprises comme Siemens, Schneider Electric, Broadcom, Bosch, Google, Samsung et Qualcomm). <\/p>\n

L'objectif principal d'Elk est de cr\u00e9er des firmwares pour microcontr\u00f4leurs en JavaScript, ex\u00e9cutant diverses t\u00e2ches d'automatisation. Le moteur est \u00e9galement adapt\u00e9 pour int\u00e9grer des gestionnaires en JavaScript dans des applications en C\/C++. Pour utiliser le moteur dans votre code, il suffit d'inclure le fichier elk.c dans l'arborescence du code source, de joindre le fichier d'en-t\u00eate elk.h et d'utiliser l'appel js_eval. Il est possible d'appeler depuis des scripts JavaScript des fonctions d\u00e9finies dans le code C\/C++, et vice versa. Le code JavaScript s'ex\u00e9cute dans un environnement prot\u00e9g\u00e9 et isol\u00e9 du code principal \u00e0 l'aide d'un interpr\u00e9teur qui ne g\u00e9n\u00e8re pas de bytecode et n'utilise pas d'allocation dynamique de m\u00e9moire. <\/p>\n

Elk impl\u00e9mente un sous-ensemble r\u00e9duit mais suffisant pour cr\u00e9er des sc\u00e9narios de travail \u00e0 partir de la sp\u00e9cification Ecmascript 6. En particulier, un ensemble de base d'op\u00e9rateurs et de types est pris en charge, mais il n'y a pas de support pour les tableaux, les prototypes, les expressions this, new et delete. Au lieu de var et const, il est conseill\u00e9 d'utiliser let, et au lieu de do, switch et for \u2014 while. Aucune biblioth\u00e8que standard n'est fournie, c'est-\u00e0-dire qu'il n'y a pas d'objets tels que Date, Regexp, Function, String et Number.
\n
Source : opennet.ru<\/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\udd47Le projet elk d\u00e9veloppe un moteur JavaScript compact pour microcontr\u00f4leurs | ProHoster","description":"La nouvelle version 2.0.9 du moteur JavaScript elk est disponible, con\u00e7ue pour \u00eatre utilis\u00e9e dans des syst\u00e8mes \u00e0 ressources limit\u00e9es, tels que les microcontr\u00f4leurs, y compris les cartes ESP32 et Arduino Nano avec 2 Ko de RAM et 30 Ko de 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