{"id":3076,"date":"2021-11-05T10:40:41","date_gmt":"2021-11-05T09:40:41","guid":{"rendered":"https:\/\/wordpress.callac.online\/index.php\/python\/arduino-en-python-le-module-pymata4\/structure-dun-programme\/"},"modified":"2022-01-05T22:41:55","modified_gmt":"2022-01-05T21:41:55","slug":"structure-dun-programme","status":"publish","type":"page","link":"https:\/\/wordpress.callac.online\/index.php\/python\/arduino-en-python-le-module-pymata4\/structure-dun-programme\/","title":{"rendered":"Structure d&rsquo;un programme"},"content":{"rendered":"\n<p>Pymata4 permet facilement de g\u00e9rer les \u00e9v\u00e9nements. <\/p>\n\n\n\n<p>Ainsi, on peut structurer un programme de la fa\u00e7on suivante (non obligatoire) :<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#-------------- importer les modules n\u00e9cessaires\nfrom pymata4 import pymata4\nimport sys\nimport time\n\n#-------------- cr\u00e9er l'objet Pymata4()\ncarte = pymata4.Pymata4()\nprint(\"--------------- D\u00e9but --------------\")\n\n\n#--------------  Constantes\n#LedR = 9 # port de la LED rouge (PWM obligatoire)\n\n\n#------------------ fonctions callback\n#def moncallback():\n            \n\n#---------------- programme principal\ntry :\n    #------------------ initialisation des pattes\n    # carte.set_pin_...(...)\n    time.sleep(1)\n    #------------------ boucle infinie\n    while True:\n        time.sleep(Delai)           \nexcept KeyboardInterrupt : # si on tape Ctl + C\n    print(\"--------------- Fin --------------\")\n    carte.shutdown()\n    sys.exit(0)\n    <\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">Les modules n\u00e9cessaires<\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li>pymata4 (\u00e0 installer)<\/li><li>sys<\/li><li>time<\/li><li>keyboard (\u00e0 installer) si interaction avec le clavier<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Cr\u00e9er l&rsquo;objet Pymata4()<\/h3>\n\n\n\n<p>C&rsquo;est l&rsquo;instruction centrale \u00e0 partir de laquelle toutes les instructions Pymata4 seront li\u00e9es.<\/p>\n\n\n\n<p>Le programme fera automatiquement la connexion avec la carte Arduino connect\u00e9e, sans que l&rsquo;on doive se soucier du port de communication.<\/p>\n\n\n\n<p>En cas d&rsquo;\u00e9chec (rare), d\u00e9brancher et rebrancher la carte et relancer le programme.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Constantes<\/h2>\n\n\n\n<p>Mieux vaut rassembler ici toutes les constantes n\u00e9cessaires :<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>pattes des composants<\/li><li>temps d&rsquo;attente<\/li><li>sensibilit\u00e9 d&rsquo;un capteur<\/li><li>&#8230;<\/li><\/ul>\n\n\n\n<p><strong>Mieux vaut laisser une seconde d&rsquo;attente pour que l&rsquo;initialisation des pattes se fasse avant les \u00e9ventuelles lectures<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Fonctions callback<\/h3>\n\n\n\n<p>Si on utilise les fonctions de lectures avec des callbacks, on pourra d\u00e9finir ici les diff\u00e9rentes fonctions.<\/p>\n\n\n\n<p>Ces fonctions seront appel\u00e9s en cas de changements suffisants de valeurs mesur\u00e9es. Cette programmation est tr\u00e8s logique et facile \u00e0 mettre en place. Pymata4 fait le reste !<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Le programme principal<\/h3>\n\n\n\n<p>Celui-ci s&rsquo;articule autour du couple <strong>try\/except<\/strong>. <\/p>\n\n\n\n<p>Dans le <strong>try<\/strong> on retrouve :<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Les initialisations des pattes<\/strong> (lecture, \u00e9criture, capteur particulier)<\/li><li><strong>la boucle infinie<\/strong> qui ne contiendra rien ou des instructions de lectures r\u00e9guli\u00e8res (polling)<\/li><\/ul>\n\n\n\n<p>La partie <strong>except<\/strong> sert \u00e0 interrompre proprement le programme quand on clique sur Ctl+C.<\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"https:\/\/wordpress.callac.online\/index.php\/python\/arduino-en-python-le-module-pymata4\/\">Retour \u00e0 la rubrique<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Pymata4 permet facilement de g\u00e9rer les \u00e9v\u00e9nements. Ainsi, on peut structurer un programme de la fa\u00e7on suivante (non obligatoire) : Les modules n\u00e9cessaires pymata4 (\u00e0 installer) sys time keyboard (\u00e0&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":3046,"menu_order":2,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-3076","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Structure d&#039;un programme - Maths &amp; Num\u00e9rique<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/wordpress.callac.online\/index.php\/python\/arduino-en-python-le-module-pymata4\/structure-dun-programme\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Structure d&#039;un programme - Maths &amp; Num\u00e9rique\" \/>\n<meta property=\"og:description\" content=\"Pymata4 permet facilement de g\u00e9rer les \u00e9v\u00e9nements. Ainsi, on peut structurer un programme de la fa\u00e7on suivante (non obligatoire) : Les modules n\u00e9cessaires pymata4 (\u00e0 installer) sys time keyboard (\u00e0&hellip;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/wordpress.callac.online\/index.php\/python\/arduino-en-python-le-module-pymata4\/structure-dun-programme\/\" \/>\n<meta property=\"og:site_name\" content=\"Maths &amp; Num\u00e9rique\" \/>\n<meta property=\"article:modified_time\" content=\"2022-01-05T21:41:55+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/wordpress.callac.online\/index.php\/python\/arduino-en-python-le-module-pymata4\/structure-dun-programme\/\",\"url\":\"https:\/\/wordpress.callac.online\/index.php\/python\/arduino-en-python-le-module-pymata4\/structure-dun-programme\/\",\"name\":\"Structure d'un programme - Maths &amp; Num\u00e9rique\",\"isPartOf\":{\"@id\":\"https:\/\/wordpress.callac.online\/#website\"},\"datePublished\":\"2021-11-05T09:40:41+00:00\",\"dateModified\":\"2022-01-05T21:41:55+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/wordpress.callac.online\/index.php\/python\/arduino-en-python-le-module-pymata4\/structure-dun-programme\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/wordpress.callac.online\/index.php\/python\/arduino-en-python-le-module-pymata4\/structure-dun-programme\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/wordpress.callac.online\/index.php\/python\/arduino-en-python-le-module-pymata4\/structure-dun-programme\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"https:\/\/wordpress.callac.online\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Python\",\"item\":\"https:\/\/wordpress.callac.online\/index.php\/python\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Arduino en Python : le module Pymata4\",\"item\":\"https:\/\/wordpress.callac.online\/index.php\/python\/arduino-en-python-le-module-pymata4\/\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Structure d&#8217;un programme\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/wordpress.callac.online\/#website\",\"url\":\"https:\/\/wordpress.callac.online\/\",\"name\":\"Maths & Num\u00e9rique\",\"description\":\"Des outils pour les enseignants de math\u00e9matiques et de num\u00e9rique\",\"publisher\":{\"@id\":\"https:\/\/wordpress.callac.online\/#\/schema\/person\/04061f1ca2c2c42039142a704be95940\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/wordpress.callac.online\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"},{\"@type\":[\"Person\",\"Organization\"],\"@id\":\"https:\/\/wordpress.callac.online\/#\/schema\/person\/04061f1ca2c2c42039142a704be95940\",\"name\":\"dlefur\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/wordpress.callac.online\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/4a9e17be136808c6597f28aa2b6c13126dab066fdc2198ff60090972c9b7fafc?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/4a9e17be136808c6597f28aa2b6c13126dab066fdc2198ff60090972c9b7fafc?s=96&d=mm&r=g\",\"caption\":\"dlefur\"},\"logo\":{\"@id\":\"https:\/\/wordpress.callac.online\/#\/schema\/person\/image\/\"},\"description\":\"Enseignant de math\u00e9matiques Lyc\u00e9e Pasteur S\u00e3o Paulo\",\"sameAs\":[\"http:\/\/wordpress.callac.online\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Structure d'un programme - Maths &amp; Num\u00e9rique","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/wordpress.callac.online\/index.php\/python\/arduino-en-python-le-module-pymata4\/structure-dun-programme\/","og_locale":"fr_FR","og_type":"article","og_title":"Structure d'un programme - Maths &amp; Num\u00e9rique","og_description":"Pymata4 permet facilement de g\u00e9rer les \u00e9v\u00e9nements. 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