{"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\/en\/blog\/news\/proekt-elk-razvivaet-kompaktnyj-javascript-dvizhok-dlya-mikrokontrollerov","title":{"rendered":"The elk project is developing a compact JavaScript engine for microcontrollers.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

A new release of the JavaScript engine elk 2.0.9 is available, aimed at use in resource-constrained systems such as microcontrollers, including ESP32 boards and Arduino Nano with 2 KB RAM and 30 KB Flash. The provided virtual machine requires only 100 bytes of memory and 20 KB of storage space to operate. The project's code is written in C and is distributed under the GPLv2 license. A C compiler is sufficient for building the project \u2014 no additional dependencies are used. The project is developed by the creators of the Mongoose OS IoT device operating system, the mJS JavaScript engine, and embedded systems. web server<\/a> Mongoose (used in products from companies like Siemens, Schneider Electric, Broadcom, Bosch, Google, Samsung, and Qualcomm). <\/p>\n

The main purpose of Elk is to create firmware for microcontrollers in JavaScript that perform various automation tasks. The engine is also suitable for embedding JavaScript handlers into C\/C++ applications. To use the engine in your code, you only need to place the file elk.c in the source tree, include the header file elk.h, and use the js_eval call. It allows calling functions defined in C\/C++ code from JavaScript scripts and vice versa. The JavaScript code runs in a secure, isolated environment separate from the main code, using an interpreter that does not generate bytecode or use dynamic memory allocation. <\/p>\n

Elk implements a small but adequate subset of the Ecmascript 6 specification for creating working scenarios. In particular, it supports a basic set of operators and types, but lacks support for arrays, prototypes, this expressions, new, and delete. It is recommended to use let instead of var and const, and while instead of do, switch, and for. There is no standard library provided, meaning that objects such as Date, Regexp, Function, String, and Number are not available.
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Source: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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