{"id":53,"date":"2016-06-27T21:16:39","date_gmt":"2016-06-27T21:16:39","guid":{"rendered":"http:\/\/marcjuneau.ca\/?p=53"},"modified":"2016-06-27T21:16:39","modified_gmt":"2016-06-27T21:16:39","slug":"visualiser-la-memoire-des-peripheriques-sous-linux","status":"publish","type":"post","link":"https:\/\/marcjuneau.ca\/?p=53","title":{"rendered":"Visualiser la m\u00e9moire des p\u00e9riph\u00e9riques sous Linux"},"content":{"rendered":"<p>Sous le r\u00e9pertoire proc, il est possible de consulter la correspondance de la m\u00e9moire pour diff\u00e9rents p\u00e9riph\u00e9riques.<\/p>\n<pre>cat \/proc\/iomem<\/pre>\n<p>La commande pr\u00e9c\u00e9dente donnera\u00a0l&rsquo;adresse m\u00e9moire correspondante. Dans cet exemple, elle est utilis\u00e9e pour d\u00e9terminer l&rsquo;adresse du UART du Raspberry PI2, qui se trouve \u00e0 <span style=\"font-size: 12pt; font-family: 'courier new', courier, monospace;\">0x3F201000.<\/span><\/p>\n<pre>root@raspberrypi:\/proc# cat iomem\r\n00000000-3affffff : System RAM\r\n 00008000-007945ef : Kernel code\r\n 00804000-009497db : Kernel data\r\n3f006000-3f006fff : dwc_otg\r\n3f007000-3f007eff : \/soc\/dma@7e007000\r\n3f00b840-3f00b84e : \/soc\/vchiq\r\n3f00b880-3f00b8bf : \/soc\/mailbox@7e00b800\r\n3f200000-3f2000b3 : \/soc\/gpio@7e200000\r\n3f201000-3f201fff : \/soc\/uart@7e201000\r\n 3f201000-3f201fff : uart-pl011\r\n3f202000-3f2020ff : \/soc\/sdhost@7e202000\r\n3f980000-3f98ffff : dwc_otg<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Sous le r\u00e9pertoire proc, il est possible de consulter la correspondance de la m\u00e9moire pour diff\u00e9rents p\u00e9riph\u00e9riques. cat \/proc\/iomem La commande pr\u00e9c\u00e9dente donnera\u00a0l&rsquo;adresse m\u00e9moire correspondante. Dans cet exemple, elle est utilis\u00e9e pour d\u00e9terminer l&rsquo;adresse du UART du Raspberry PI2, qui se trouve \u00e0 0x3F201000. root@raspberrypi:\/proc# cat iomem 00000000-3affffff : System<span class=\"more-link\"><a href=\"https:\/\/marcjuneau.ca\/?p=53\">Continue Reading<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7,8],"tags":[],"class_list":["entry","author-mjuneau","post-53","post","type-post","status-publish","format-standard","category-linux","category-raspberry-pi"],"_links":{"self":[{"href":"https:\/\/marcjuneau.ca\/index.php?rest_route=\/wp\/v2\/posts\/53","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/marcjuneau.ca\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/marcjuneau.ca\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/marcjuneau.ca\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/marcjuneau.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=53"}],"version-history":[{"count":2,"href":"https:\/\/marcjuneau.ca\/index.php?rest_route=\/wp\/v2\/posts\/53\/revisions"}],"predecessor-version":[{"id":55,"href":"https:\/\/marcjuneau.ca\/index.php?rest_route=\/wp\/v2\/posts\/53\/revisions\/55"}],"wp:attachment":[{"href":"https:\/\/marcjuneau.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=53"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/marcjuneau.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=53"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/marcjuneau.ca\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=53"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}