{"id":2739,"date":"2020-04-19T18:47:33","date_gmt":"2020-04-19T16:47:33","guid":{"rendered":"http:\/\/www.ardpylab.fr\/?page_id=2739"},"modified":"2020-05-10T17:05:34","modified_gmt":"2020-05-10T15:05:34","slug":"protocole-firmata-standard","status":"publish","type":"page","link":"https:\/\/www.ardpylab.fr\/?page_id=2739","title":{"rendered":"Protocole \u201dFirmata Standard\u201d"},"content":{"rendered":"\n

 <\/p>\n

. Chargement du code \u201dFirmata Standard\u201d dans la m\u00e9moire de l\u2019Arduino<\/u> :

<\/span><\/strong><\/h4>\n

– Brancher l\u2019Arduino via un port USB,<\/p>\n

– Afin de charger la librairie \u201dFirmata standard\u201d<\/strong> sur l\u2019ARDUINO, il faut lancer le logiciel \u201dIDE ARDUINO\u201d<\/strong>, puis s\u00e9lectionner :<\/p>\n

Fichier > Exemples > Firmata > Standard Firmata<\/strong>,<\/p>\n

– puis cliquer sur \u201d<\/strong>t\u00e9l\u00e9verser\u201d<\/strong>.<\/p>\n\n\n\n

\n
\"\"<\/figure>\n<\/div>\n

 <\/p>\n\n\n\n

. Installation de la biblioth\u00e8que PyFirmata\u00a0dans Python:<\/u><\/strong>\u00a0<\/u><\/span><\/h4>\n


Pour faire fonctionner, un programme en Python qui contr\u00f4le l\u2019Arduino via le protocole de communication Firmata standard<\/strong>, Python doit disposer de la biblioth\u00e8que \u201dPyFirmata\u201d<\/strong>. Celle-ci peut \u00eatre install\u00e9e via \u201dpip\u201d<\/strong>, \u00e0 l\u2019aide de la ligne de commande\u00a0:<\/p>\n

pip install pyfirmata

<\/strong><\/p>\n

Pour utiliser la biblioth\u00e8que \u201dpyfirmata\u201d <\/strong>dans un programme python, il faut importer le module \u201dpyfirmata\u201d<\/strong>, \u00e0 l\u2019aide de l\u2019instruction\u00a0:<\/p>\n

import pyfirmata<\/strong><\/p>\n


La connexion avec le microcontr\u00f4leur, via le port s\u00e9rie, est r\u00e9alis\u00e9e avec la m\u00e9thode \u201dArduino\u201d <\/strong>du module \u201dpyfirmata\u201d<\/strong>\u00a0en pr\u00e9cisant le port COM<\/strong> sur lequel l\u2019Arduino est connect\u00e9\u00a0:<\/p>\n

board = pyfirmata.Arduino(Port COM)<\/strong>\u00a0<\/p>\n


Une fois la connexion \u00e9tablie, il est possible d\u2019interroger ou de modifier les entr\u00e9es et sorties num\u00e9riques ou analogiques de l\u2019Arduino:<\/p>\n

. Gestion des sorties num\u00e9riques<\/a>
. Gestion des entr\u00e9es num\u00e9riques<\/a>
. Gestion des sorties analogiques<\/a>
. Gestion des entr\u00e9es analogiques\u00a0<\/a><\/p>\n

\u00a0<\/p>\n\n\n

\n
\n\n
\"\"<\/a><\/figure><\/div>\n\n<\/div>\n\n
\n\n
\"\"<\/a><\/figure><\/div>\n\n<\/div>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"

  . Chargement du code \u201dFirmata Standard\u201d dans la m\u00e9moire de l\u2019Arduino : – Brancher l\u2019Arduino via un port USB, – Afin de charger la librairie \u201dFirmata standard\u201d sur l\u2019ARDUINO, il faut lancer le logiciel \u201dIDE ARDUINO\u201d, puis s\u00e9lectionner : Fichier > Exemples > Firmata > Standard Firmata, – puis cliquer sur \u201dt\u00e9l\u00e9verser\u201d.   . Installation […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-2739","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.ardpylab.fr\/index.php?rest_route=\/wp\/v2\/pages\/2739","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ardpylab.fr\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.ardpylab.fr\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.ardpylab.fr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ardpylab.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2739"}],"version-history":[{"count":0,"href":"https:\/\/www.ardpylab.fr\/index.php?rest_route=\/wp\/v2\/pages\/2739\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.ardpylab.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2739"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}