{"id":1654,"date":"2021-02-09T11:53:03","date_gmt":"2021-02-09T10:53:03","guid":{"rendered":"http:\/\/www.fabienm.eu\/flf\/?p=1654"},"modified":"2021-02-09T12:40:39","modified_gmt":"2021-02-09T11:40:39","slug":"les-interface-decoupled-en-chisel","status":"publish","type":"post","link":"https:\/\/www.fabienm.eu\/flf\/les-interface-decoupled-en-chisel\/","title":{"rendered":"Les interface Decoupled() en Chisel"},"content":{"rendered":"\n<p>La pr\u00e9sentation de <a href=\"https:\/\/inst.eecs.berkeley.edu\/~cs250\/fa13\/lectures\/lec11b.pdf\">Jonathan Bachrach<\/a> donne les bases d&rsquo;utilisation des interfaces <a href=\"https:\/\/www.chisel-lang.org\/api\/latest\/chisel3\/util\/Decoupled$.html\">Decoupled() <\/a>en <a href=\"https:\/\/www.chisel-lang.org\/\">Chisel<\/a>. Cependant, elle date (2013). Il est donc n\u00e9cessaire de se mettre un peu \u00e0 jour.<\/p>\n\n\n\n<p>Tout d&rsquo;abord, il ne faut pas oublier d&rsquo;inclure le package :<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import chisel3.util._<\/code><\/pre>\n\n\n\n<p>Ensuite, l&rsquo;interface poss\u00e8de en elle m\u00eame l&rsquo;information de direction. Il ne faut donc pas l&rsquo;inclure dans un Output()\/Input() lorsqu&rsquo;on le d\u00e9clare dans un IO(new Bundle {}) :<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ Producteur\nval data = Decoupled(UInt(10.W))\n\/\/ Consommateur\nval data = Flipped(Decoupled(UInt(10.W)))<\/code><\/pre>\n\n\n\n<p>Et pour finir, on ne d\u00e9clare plus de Reg() comme donn\u00e9 \u00e0 la fin de la pr\u00e9sentation. Il faut utiliser RegNext() \u00e0 la place :<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>results.valid := isResult\nresults.bits := result\nisResult := Reg<strong>Next<\/strong>(results.ready) &amp; haveNewResult<\/code><\/pre>\n\n\n\n<p>Tout cela \u00e9vitera les horribles traces Java assez illisible.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>La pr\u00e9sentation de Jonathan Bachrach donne les bases d&rsquo;utilisation des interfaces Decoupled() en Chisel. Cependant, elle date (2013). Il est donc n\u00e9cessaire de se mettre un peu \u00e0 jour. Tout d&rsquo;abord, il ne faut pas oublier d&rsquo;inclure le package : Ensuite, l&rsquo;interface poss\u00e8de en elle m\u00eame l&rsquo;information de direction. Il ne faut donc pas l&rsquo;inclure &hellip; <a href=\"https:\/\/www.fabienm.eu\/flf\/les-interface-decoupled-en-chisel\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Les interface Decoupled() en Chisel<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","footnotes":""},"categories":[4,3,1],"tags":[57,88,194],"class_list":["post-1654","post","type-post","status-publish","format-standard","hentry","category-chisel-langages","category-langages","category-non-classe","tag-chisel","tag-chisel3","tag-decoupled"],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"post-thumbnail":false},"uagb_author_info":{"display_name":"Fabien Marteau","author_link":"https:\/\/www.fabienm.eu\/flf\/author\/admin\/"},"uagb_comment_info":0,"uagb_excerpt":"La pr\u00e9sentation de Jonathan Bachrach donne les bases d&rsquo;utilisation des interfaces Decoupled() en Chisel. Cependant, elle date (2013). Il est donc n\u00e9cessaire de se mettre un peu \u00e0 jour. Tout d&rsquo;abord, il ne faut pas oublier d&rsquo;inclure le package : Ensuite, l&rsquo;interface poss\u00e8de en elle m\u00eame l&rsquo;information de direction. Il ne faut donc pas l&rsquo;inclure\u2026","_links":{"self":[{"href":"https:\/\/www.fabienm.eu\/flf\/wp-json\/wp\/v2\/posts\/1654","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fabienm.eu\/flf\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fabienm.eu\/flf\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fabienm.eu\/flf\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fabienm.eu\/flf\/wp-json\/wp\/v2\/comments?post=1654"}],"version-history":[{"count":3,"href":"https:\/\/www.fabienm.eu\/flf\/wp-json\/wp\/v2\/posts\/1654\/revisions"}],"predecessor-version":[{"id":1657,"href":"https:\/\/www.fabienm.eu\/flf\/wp-json\/wp\/v2\/posts\/1654\/revisions\/1657"}],"wp:attachment":[{"href":"https:\/\/www.fabienm.eu\/flf\/wp-json\/wp\/v2\/media?parent=1654"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fabienm.eu\/flf\/wp-json\/wp\/v2\/categories?post=1654"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fabienm.eu\/flf\/wp-json\/wp\/v2\/tags?post=1654"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}