{"id":96268,"date":"2020-10-10T01:42:05","date_gmt":"2020-10-09T23:42:05","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/dostupen-snek-1-5-python-podobnyj-yazyk-programmirovaniya-dlya-vstraivaemyh-sistem"},"modified":"2020-10-10T01:42:05","modified_gmt":"2020-10-09T23:42:05","slug":"dostupen-snek-1-5-python-podobnyj-yazyk-programmirovaniya-dlya-vstraivaemyh-sistem","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/dostupen-snek-1-5-python-podobnyj-yazyk-programmirovaniya-dlya-vstraivaemyh-sistem","title":{"rendered":"Disponibile Snek 1.5, un linguaggio di programmazione simile a Python per sistemi embeddati","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>(Kit Packard (<noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/Keith_Packard\">Keith Packard<\/a><\/noindex>), sviluppatore attivo di Debian, leader del progetto X.Org e creatore di numerosi X-extensions, tra cui XRender, XComposite e XRandR,  <noindex><a rel=\"nofollow\" href=\"https:\/\/keithp.com\/pipermail\/snek\/2020-October\/000395.html\">ha pubblicato<\/a><\/noindex> nuova versione del linguaggio di programmazione <noindex><a rel=\"nofollow\" href=\"https:\/\/sneklang.org\/\">Snek 1.5<\/a><\/noindex>, che pu\u00f2 essere considerato una versione semplificata del linguaggio Python, adattato per l'uso su sistemi embedded, su cui non ci sono abbastanza risorse per utilizzare <noindex><a rel=\"nofollow\" href=\"https:\/\/micropython.org\/\">MicroPython<\/a><\/noindex> e <noindex><a rel=\"nofollow\" href=\"https:\/\/circuitpython.org\/\">CircuitPython.<\/a><\/noindex>Snek non pretende di offrire il pieno supporto per il linguaggio Python, ma pu\u00f2 essere utilizzato su chip con solo 2KB di RAM, 32KB di memoria Flash e 1KB di EEPROM. Il codice del progetto <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/keith-packard\/snek\">\u00e8 distribuito<\/a><\/noindex> \u00e8 distribuito sotto licenza GPLv3. Le build <noindex><a rel=\"nofollow\" href=\"https:\/\/sneklang.org\/dist\/\">sono stati preparati<\/a><\/noindex> per Linux, Windows e macOS. <\/p>\n<p>La necessit\u00e0 di un nuovo linguaggio \u00e8 emersa durante le esperienze di insegnamento di Kit Packard, il quale desiderava utilizzare per l'insegnamento agli studenti un linguaggio adatto per le schede Arduino e simile per obiettivi a Lego Logo, ma capace di fungere da base per ulteriori studi di programmazione. I requisiti chiave per il nuovo linguaggio erano il suo carattere testuale (dimostrazione di metodi di programmazione reali, non legati a interfacce grafiche e mouse),<br \/>\n fornire una base per un'istruzione completa sulla programmazione e la compattezza del linguaggio (capacit\u00e0 di apprendere il linguaggio in poche ore).<\/p>\n<p>Nel linguaggio Snek viene utilizzata la semantica e la sintassi di Python, ma supporta solo un insieme limitato di funzionalit\u00e0. Uno degli obiettivi considerati durante lo sviluppo \u00e8 mantenere la retrocompatibilit\u00e0: i programmi in Snek possono essere eseguiti utilizzando implementazioni complete di Python 3. Ci\u00f2 significa che gli studenti familiari con Snek possono immediatamente passare a continuare lo studio del Python completo e utilizzare i propri lavori esistenti quando lavorano con Python.<\/p>\n<p>Snek \u00e8 stato portato su una vasta gamma di dispositivi embedded, tra cui schede Arduino, Feather\/Metro M0 Express, Adafruit Crickit, Adafruit ItsyBitsy, Lego EV3 e \u03bcduino, fornendo accesso a GPIO e vari dispositivi periferici. Inoltre, il progetto sta anche sviluppando il proprio microcontrollore open source. <noindex><a rel=\"nofollow\" href=\"https:\/\/sneklang.org\/snekboard\/\">Snekboard<\/a><\/noindex> (ARM Cortex M0 con 256KB di Flash e 32KB di RAM), progettato per l'uso con Snek o CircuitPython, e indirizzato all'insegnamento e alla costruzione di robot utilizzando pezzi LEGO. I mezzi per creare Snekboard  <noindex><a rel=\"nofollow\" href=\"https:\/\/www.crowdsupply.com\/keith-packard\/snekboard\">sono state raccolte<\/a><\/noindex> attraverso crowdfunding.<\/p>\n<p>Per lo sviluppo di applicazioni in Snek pu\u00f2 essere utilizzato l'editor di codice <noindex><a rel=\"nofollow\" href=\"https:\/\/codewith.mu\/\">Mu<\/a><\/noindex> (<noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/keith-packard\/mu\">patch per il supporto<\/a><\/noindex>) o un proprio ambiente di sviluppo integrato della console <noindex><a rel=\"nofollow\" href=\"https:\/\/manpages.debian.org\/testing\/snek\/snekde.1.en.html\">Snekde<\/a><\/noindex>, scritto utilizzando la libreria Curses e che offre un'interfaccia per la modifica del codice e l'interazione con il dispositivo tramite la porta USB (\u00e8 possibile salvare immediatamente i programmi nella eeprom del dispositivo e caricare il codice dal dispositivo).<\/p>\n<p><center><noindex><a rel=\"nofollow\" href=\"https:\/\/keithp.com\/pictures\/snekde.png\"><img decoding=\"async\" alt=\"Disponibile Snek 1.5, un linguaggio di programmazione simile a Python per sistemi embeddati\" src=\"\/wp-content\/uploads\/2020\/10\/2622e7c502eb81fe5a9cdbbe6789eb49.png\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><\/p>\n<p>Nel nuovo rilascio:<\/p>\n<ul>\n<li class=\"l\"> Aggiunto il supporto per la scheda Arduino Uno, che \u00e8 simile al porto per la scheda Duemilanove, ma include la sostituzione del firmware per Atmega 16u2.\n<li class=\"l\"> Aggiunto il supporto corretto per le catene di operazioni di confronto (a &lt; b &lt; c).\n<li class=\"l\"> Per le schede Adafruit Circuit Playground Express \u00e8 stata fornita la possibilit\u00e0 di emettere suoni.\n<li class=\"l\"> Per le schede Duemilanove \u00e8 stato utilizzato il bootloader <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/Optiboot\/optiboot\">Optiboot<\/a><\/noindex>, che consente di sostituire Snek, in modo da non dover utilizzare un dispositivo separato per la programmazione.\n<\/ul>\n<p>Oltre a Snek, Kit Packard ha anche <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51873\">sviluppa<\/a><\/noindex> la libreria standard C <noindex><a rel=\"nofollow\" href=\"https:\/\/keithp.com\/picolibc\/\">PicoLibc<\/a><\/noindex>, che pu\u00f2 essere utilizzata su dispositivi embedded con poca RAM.<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Fonte: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=53860\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u0438\u0442 \u041f\u0430\u043a\u043a\u0430\u0440\u0434 (Keith Packard), \u0430\u043a\u0442\u0438\u0432\u043d\u044b\u0439 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a Debian, \u043b\u0438\u0434\u0435\u0440 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 X.Org \u0438 \u0441\u043e\u0437\u0434\u0430\u0442\u0435\u043b\u044c \u043c\u043d\u043e\u0436\u0435\u0441\u0442\u0432\u0430 X-\u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u0438\u0439, \u0432\u043a\u043b\u044e\u0447\u0430\u044f XRender, XComposite \u0438 XRandR, \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u043d\u043e\u0432\u044b\u0439 \u0432\u044b\u043f\u0443\u0441\u043a \u044f\u0437\u044b\u043a\u0430 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f Snek 1.5, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043c\u043e\u0436\u043d\u043e \u0440\u0430\u0441\u0441\u043c\u0430\u0442\u0440\u0438\u0432\u0430\u0442\u044c \u043a\u0430\u043a \u0443\u043f\u0440\u043e\u0449\u0451\u043d\u043d\u044b\u0439 \u0432\u0430\u0440\u0438\u0430\u043d\u0442 \u044f\u0437\u044b\u043a\u0430 Python, \u0430\u0434\u0430\u043f\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u0434\u043b\u044f \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u043d\u0430 \u0432\u0441\u0442\u0440\u0430\u0438\u0432\u0430\u0435\u043c\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445, \u043d\u0430 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u043d\u0435\u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u043e \u0440\u0435\u0441\u0443\u0440\u0441\u043e\u0432 \u0434\u043b\u044f \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f MicroPython \u0438 CircuitPython. Snek \u043d\u0435 \u043f\u0440\u0435\u0442\u0435\u043d\u0434\u0443\u0435\u0442 \u043d\u0430 \u043f\u043e\u043b\u043d\u043e\u0446\u0435\u043d\u043d\u0443\u044e \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0443 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":96269,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-96268","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041a\u0438\u0442 \u041f\u0430\u043a\u043a\u0430\u0440\u0434 (Keith Packard), \u0430\u043a\u0442\u0438\u0432\u043d\u044b\u0439 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a Debian, \u043b\u0438\u0434\u0435\u0440 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