{"id":5960,"date":"2024-07-02T15:18:59","date_gmt":"2024-07-02T13:18:59","guid":{"rendered":"https:\/\/www.domotic.phdata.fr\/domotic\/?p=5960"},"modified":"2024-07-02T16:20:48","modified_gmt":"2024-07-02T14:20:48","slug":"pcf8574","status":"publish","type":"post","link":"https:\/\/www.domotic.phdata.fr\/domotic\/pcf8574\/","title":{"rendered":"PCF 8574"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"5960\" class=\"elementor elementor-5960\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e8df1ef e-flex e-con-boxed e-con e-parent\" data-id=\"e8df1ef\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1afc2df3 elementor-widget elementor-widget-image\" data-id=\"1afc2df3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"900\" height=\"500\" src=\"https:\/\/www.domotic.phdata.fr\/domotic\/wp-content\/uploads\/2024\/07\/Image-domotique-pcf8574.webp\" class=\"attachment-large size-large wp-image-5953\" alt=\"\" srcset=\"https:\/\/www.domotic.phdata.fr\/domotic\/wp-content\/uploads\/2024\/07\/Image-domotique-pcf8574.webp 900w, https:\/\/www.domotic.phdata.fr\/domotic\/wp-content\/uploads\/2024\/07\/Image-domotique-pcf8574-300x167.webp 300w, https:\/\/www.domotic.phdata.fr\/domotic\/wp-content\/uploads\/2024\/07\/Image-domotique-pcf8574-768x427.webp 768w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6a1610a4 elementor-widget elementor-widget-menu-anchor\" data-id=\"6a1610a4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"menu\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ef4a1e4 e-flex e-con-boxed e-con e-parent\" data-id=\"ef4a1e4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9438f6d elementor-widget elementor-widget-text-editor\" data-id=\"9438f6d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4553ce0b e-flex e-con-boxed e-con e-parent\" data-id=\"4553ce0b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-362855dc e-con-full e-flex e-con e-child\" data-id=\"362855dc\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5dc8fd1f elementor-widget elementor-widget-image\" data-id=\"5dc8fd1f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"280\" height=\"79\" src=\"https:\/\/www.domotic.phdata.fr\/domotic\/wp-content\/uploads\/2024\/07\/logo-pcf8574.webp\" class=\"attachment-large size-large wp-image-5962\" alt=\"\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-79c6ac6d e-con-full e-flex e-con e-child\" data-id=\"79c6ac6d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-720cd46d elementor-widget elementor-widget-heading\" data-id=\"720cd46d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">PCF 8574<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1170ae36 e-flex e-con-boxed e-con e-parent\" data-id=\"1170ae36\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7657d43b elementor-widget elementor-widget-heading\" data-id=\"7657d43b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Caract\u00e9ristiques principales <\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3a2db396 elementor-widget elementor-widget-text-editor\" data-id=\"3a2db396\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Le PCF8574 est un circuit int\u00e9gr\u00e9 utilis\u00e9 pour l&rsquo;extension de ports d&rsquo;entr\u00e9e\/sortie (I\/O) via le bus I\u00b2C. Il permet de contr\u00f4ler des p\u00e9riph\u00e9riques suppl\u00e9mentaires sans avoir \u00e0 utiliser des broches suppl\u00e9mentaires sur un microcontr\u00f4leur. Voici un aper\u00e7u d\u00e9taill\u00e9 de son fonctionnement<\/p><ol><li><strong>Bus I\u00b2C<\/strong> : Le PCF8574 communique avec le microcontr\u00f4leur via le bus I\u00b2C.<\/li><li><strong>8 broches d&rsquo;I\/O<\/strong> : Il offre 8 broches d&rsquo;entr\u00e9e\/sortie (P0 \u00e0 P7) qui peuvent \u00eatre configur\u00e9es individuellement comme entr\u00e9es ou sorties.<\/li><li><strong>Adresses configurables<\/strong> : Jusqu&rsquo;\u00e0 8 dispositifs PCF8574 peuvent \u00eatre connect\u00e9s sur le m\u00eame bus I\u00b2C en configurant les broches d&rsquo;adresse A0, A1 et A2.<\/li><li><strong>Tension de fonctionnement<\/strong> : 2.5V \u00e0 6V, ce qui le rend compatible avec la plupart des syst\u00e8mes logiques.<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1c37bea e-flex e-con-boxed e-con e-parent\" data-id=\"1c37bea\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e64422f elementor-widget elementor-widget-text-editor\" data-id=\"e64422f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3>Fonctionnement :<\/h3><ol><li><p><strong>Connexion I\u00b2C<\/strong> :<\/p><ul><li>Le PCF8574 utilise deux broches pour la communication I\u00b2C : SDA (Data) et SCL (Clock).<\/li><li>Les broches d&rsquo;adresse (A0, A1, A2) permettent de d\u00e9finir une adresse unique pour chaque dispositif sur le bus, ce qui permet de connecter plusieurs PCF8574 sur le m\u00eame bus.<\/li><\/ul><\/li><li><p><strong>Configuration des broches<\/strong> :<\/p><ul><li>Chaque broche (P0 \u00e0 P7) peut \u00eatre configur\u00e9e comme entr\u00e9e ou sortie.<\/li><li>En mode sortie, les broches peuvent envoyer des signaux logiques haut ou bas.<\/li><li>En mode entr\u00e9e, les broches peuvent lire des signaux logiques.<\/li><\/ul><\/li><li><p><strong>\u00c9criture sur les broches<\/strong> :<\/p><ul><li>Pour \u00e9crire sur les broches, le ma\u00eetre I\u00b2C envoie une s\u00e9quence de bits comprenant l&rsquo;adresse du PCF8574 suivie des donn\u00e9es \u00e0 \u00e9crire. Chaque bit de donn\u00e9e correspond \u00e0 l&rsquo;\u00e9tat d&rsquo;une broche (0 pour bas, 1 pour haut).<\/li><\/ul><\/li><li><p><strong>Lecture des broches<\/strong> :<\/p><ul><li>Pour lire l&rsquo;\u00e9tat des broches, le ma\u00eetre I\u00b2C envoie une requ\u00eate de lecture \u00e0 l&rsquo;adresse du PCF8574. Le PCF8574 r\u00e9pond avec l&rsquo;\u00e9tat actuel de ses broches.<\/li><\/ul><\/li><\/ol><h3>Exemple de communication I\u00b2C :<\/h3><ul><li><p><strong>\u00c9criture<\/strong> :<\/p><ul><li>Adresse I\u00b2C : 0x20 (selon les broches A0, A1, A2)<\/li><li>Donn\u00e9es \u00e0 \u00e9crire : 0b10101010 (P7, P5, P3, et P1 en haut, les autres en bas)<\/li><\/ul><\/li><li><p><strong>Lecture<\/strong> :<\/p><ul><li>Le ma\u00eetre envoie l&rsquo;adresse I\u00b2C en mode lecture (ajoute un bit de lecture).<\/li><li>Le PCF8574 renvoie l&rsquo;\u00e9tat actuel de ses broches, par exemple 0b01010101.<\/li><\/ul><\/li><\/ul><h3>Utilisation en pratique :<\/h3><ul><li><p><strong>Connexion<\/strong> :<\/p><ol><li>Connecter SDA et SCL aux lignes correspondantes du microcontr\u00f4leur.<\/li><li>Configurer les broches A0, A1, A2 pour d\u00e9finir l&rsquo;adresse I\u00b2C.<\/li><li>Connecter les broches P0 \u00e0 P7 aux p\u00e9riph\u00e9riques \u00e0 contr\u00f4ler.<\/li><\/ol><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-dcd9ee3 e-con-full e-flex e-con e-child\" data-id=\"dcd9ee3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-803cf13 elementor-widget elementor-widget-text-editor\" data-id=\"803cf13\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Le PCF8574 est un composant extr\u00eamement utile pour augmenter le nombre de ports d&rsquo;I\/O disponibles dans un projet sans avoir \u00e0 changer de microcontr\u00f4leur ou de carte de d\u00e9veloppement.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-935de3f elementor-widget elementor-widget-image\" data-id=\"935de3f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.domotic.phdata.fr\/domotic\/wp-content\/uploads\/2024\/07\/pcf8574-gpio-extender-with-arduino-and-nodemcu.w1456.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"pcf8574-gpio-extender-with-arduino-and-nodemcu.w1456\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6NTk2NiwidXJsIjoiaHR0cHM6XC9cL3d3dy5kb21vdGljLnBoZGF0YS5mclwvZG9tb3RpY1wvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNFwvMDdcL3BjZjg1NzQtZ3Bpby1leHRlbmRlci13aXRoLWFyZHVpbm8tYW5kLW5vZGVtY3UudzE0NTYuanBnIn0%3D\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.domotic.phdata.fr\/domotic\/wp-content\/uploads\/2024\/07\/pcf8574-gpio-extender-with-arduino-and-nodemcu.w1456-1024x576.jpg\" class=\"attachment-large size-large wp-image-5966\" alt=\"\" srcset=\"https:\/\/www.domotic.phdata.fr\/domotic\/wp-content\/uploads\/2024\/07\/pcf8574-gpio-extender-with-arduino-and-nodemcu.w1456-1024x576.jpg 1024w, https:\/\/www.domotic.phdata.fr\/domotic\/wp-content\/uploads\/2024\/07\/pcf8574-gpio-extender-with-arduino-and-nodemcu.w1456-300x169.jpg 300w, https:\/\/www.domotic.phdata.fr\/domotic\/wp-content\/uploads\/2024\/07\/pcf8574-gpio-extender-with-arduino-and-nodemcu.w1456-768x432.jpg 768w, https:\/\/www.domotic.phdata.fr\/domotic\/wp-content\/uploads\/2024\/07\/pcf8574-gpio-extender-with-arduino-and-nodemcu.w1456-800x450.jpg 800w, https:\/\/www.domotic.phdata.fr\/domotic\/wp-content\/uploads\/2024\/07\/pcf8574-gpio-extender-with-arduino-and-nodemcu.w1456.jpg 1456w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1202c09 elementor-widget elementor-widget-image\" data-id=\"1202c09\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"326\" height=\"100\" src=\"https:\/\/www.domotic.phdata.fr\/domotic\/wp-content\/uploads\/2024\/07\/module-pcf8574-avec-selecteur-adresse-i2c-h100.png\" class=\"attachment-large size-large wp-image-6006\" alt=\"\" srcset=\"https:\/\/www.domotic.phdata.fr\/domotic\/wp-content\/uploads\/2024\/07\/module-pcf8574-avec-selecteur-adresse-i2c-h100.png 326w, https:\/\/www.domotic.phdata.fr\/domotic\/wp-content\/uploads\/2024\/07\/module-pcf8574-avec-selecteur-adresse-i2c-h100-300x92.png 300w\" sizes=\"(max-width: 326px) 100vw, 326px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f0a90a6 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"f0a90a6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a5df6cc elementor-position-top elementor-widget elementor-widget-image-box\" data-id=\"a5df6cc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><a href=\"https:\/\/passionelectronique.fr\/tutorial-pcf8574\/\" target=\"_blank\" tabindex=\"-1\"><img loading=\"lazy\" decoding=\"async\" width=\"490\" height=\"200\" src=\"https:\/\/www.domotic.phdata.fr\/domotic\/wp-content\/uploads\/2024\/07\/lien-www.webp\" class=\"attachment-full size-full wp-image-6017\" alt=\"\" srcset=\"https:\/\/www.domotic.phdata.fr\/domotic\/wp-content\/uploads\/2024\/07\/lien-www.webp 490w, https:\/\/www.domotic.phdata.fr\/domotic\/wp-content\/uploads\/2024\/07\/lien-www-300x122.webp 300w\" sizes=\"(max-width: 490px) 100vw, 490px\" \/><\/a><\/figure><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\"><a href=\"https:\/\/passionelectronique.fr\/tutorial-pcf8574\/\" target=\"_blank\">PASSION ELECTRONIQUE<\/a><\/h3><p class=\"elementor-image-box-description\">Vous \u00eates en manque d\u2019entr\u00e9es sorties sur votre Arduino ? Alors cette puce pourrait fort vous int\u00e9resser ! En effet, le PCF8574 permet d\u2019ajouter jusqu\u2019\u00e0 8 entr\u00e9es\/sorties digitales suppl\u00e9mentaires, pilot\u00e9es en i2c, qui fonctionneront exactement (ou presque !) comme les pins D0 et D13 de votre Arduino Uno ou Nano, par exemple.<\/p><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1691830c e-flex e-con-boxed e-con e-parent\" data-id=\"1691830c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-633fbd5e elementor-widget elementor-widget-text-editor\" data-id=\"633fbd5e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"cpp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;Wire.h&gt;\n#define PCF8574_ADDRESS 0x20\n\nvoid setup() {\n  Wire.begin();\n  Serial.begin(9600);\n}\n\nvoid loop() {\n  \/\/ \u00c9criture sur le PCF8574\n  Wire.beginTransmission(PCF8574_ADDRESS);\n  Wire.write(0b10101010); \/\/ Configure les broches P7, P5, P3, P1 \u00e0 haut\n  Wire.endTransmission();\n\n  delay(500);\n\n  \/\/ Lecture des broches du PCF8574\n  Wire.requestFrom(PCF8574_ADDRESS, 1);\n  if (Wire.available()) {\n    byte data = Wire.read();\n    Serial.println(data, BIN); \/\/ Affiche l'\u00e9tat des broches\n  }\n\n  delay(500);\n}\n<\/pre>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-554686b2 e-flex e-con-boxed e-con e-parent\" data-id=\"554686b2\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4c2e2148 elementor-view-default elementor-widget elementor-widget-icon\" data-id=\"4c2e2148\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-wrapper\">\n\t\t\t<a class=\"elementor-icon\" href=\"#menu\">\n\t\t\t<i aria-hidden=\"true\" class=\"fas fa-arrow-up\"><\/i>\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7aa6f2e6 e-flex e-con-boxed e-con e-parent\" data-id=\"7aa6f2e6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-79bde841 elementor-widget elementor-widget-text-editor\" data-id=\"79bde841\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"2509\" class=\"elementor elementor-2509\">\n\t\t\t\t<div class=\"elementor-element elementor-element-dc37c4c e-flex e-con-boxed e-con e-parent\" data-id=\"dc37c4c\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;gradient&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-31250bc elementor-widget elementor-widget-image\" data-id=\"31250bc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"140\" src=\"https:\/\/www.domotic.phdata.fr\/domotic\/wp-content\/uploads\/2024\/06\/pied-de-page.webp\" class=\"attachment-large size-large wp-image-3167\" alt=\"\" srcset=\"https:\/\/www.domotic.phdata.fr\/domotic\/wp-content\/uploads\/2024\/06\/pied-de-page.webp 1000w, https:\/\/www.domotic.phdata.fr\/domotic\/wp-content\/uploads\/2024\/06\/pied-de-page-300x42.webp 300w, https:\/\/www.domotic.phdata.fr\/domotic\/wp-content\/uploads\/2024\/06\/pied-de-page-768x108.webp 768w, https:\/\/www.domotic.phdata.fr\/domotic\/wp-content\/uploads\/2024\/06\/pied-de-page-150x21.webp 150w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-da41007 elementor-widget elementor-widget-text-editor\" data-id=\"da41007\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: center;\"><strong>Domotique &#8211; informatique &#8211; \u00e9lectronique &#8211; dictionnaire &#8211; projets<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8a0e2d2 elementor-widget elementor-widget-text-editor\" data-id=\"8a0e2d2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Copyright 2024<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>PCF 8574 Caract\u00e9ristiques principales Le PCF8574 est un circuit int\u00e9gr\u00e9 utilis\u00e9 pour l&rsquo;extension de ports d&rsquo;entr\u00e9e\/sortie (I\/O) via le bus I\u00b2C. Il permet de contr\u00f4ler des p\u00e9riph\u00e9riques suppl\u00e9mentaires sans avoir \u00e0 utiliser des broches suppl\u00e9mentaires sur un microcontr\u00f4leur. Voici un aper\u00e7u d\u00e9taill\u00e9 de son fonctionnement Bus I\u00b2C : Le PCF8574 communique avec le microcontr\u00f4leur via [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_eb_attr":"","ocean_post_layout":"","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"","ocean_second_sidebar":"","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"","ocean_custom_header_template":"","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"","ocean_menu_typo_font_family":"","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"","_jetpack_memberships_contains_paid_content":false,"ocean_post_oembed":"","ocean_post_self_hosted_media":"","ocean_post_video_embed":"","ocean_link_format":"","ocean_link_format_target":"self","ocean_quote_format":"","ocean_quote_format_link":"post","ocean_gallery_link_images":"on","ocean_gallery_id":[],"footnotes":""},"categories":[1],"tags":[],"class_list":["post-5960","post","type-post","status-publish","format-standard","hentry","category-bienvenue","entry"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.domotic.phdata.fr\/domotic\/wp-json\/wp\/v2\/posts\/5960","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.domotic.phdata.fr\/domotic\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.domotic.phdata.fr\/domotic\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.domotic.phdata.fr\/domotic\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.domotic.phdata.fr\/domotic\/wp-json\/wp\/v2\/comments?post=5960"}],"version-history":[{"count":64,"href":"https:\/\/www.domotic.phdata.fr\/domotic\/wp-json\/wp\/v2\/posts\/5960\/revisions"}],"predecessor-version":[{"id":6032,"href":"https:\/\/www.domotic.phdata.fr\/domotic\/wp-json\/wp\/v2\/posts\/5960\/revisions\/6032"}],"wp:attachment":[{"href":"https:\/\/www.domotic.phdata.fr\/domotic\/wp-json\/wp\/v2\/media?parent=5960"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.domotic.phdata.fr\/domotic\/wp-json\/wp\/v2\/categories?post=5960"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.domotic.phdata.fr\/domotic\/wp-json\/wp\/v2\/tags?post=5960"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}