{"id":995,"date":"2018-05-25T21:37:38","date_gmt":"2018-05-25T21:37:38","guid":{"rendered":"http:\/\/hayperek.pl\/?p=995"},"modified":"2018-05-28T09:13:27","modified_gmt":"2018-05-28T09:13:27","slug":"sniffer-can","status":"publish","type":"post","link":"https:\/\/hayperek.pl\/en\/2018\/05\/25\/sniffer-can\/","title":{"rendered":"Sniffer CAN"},"content":{"rendered":"<p>Niemal\u017ce na samym pocz\u0105tku naszego projektu doda\u0142em mo\u017cliwo\u015b\u0107 &#8222;pods\u0142uchiwania i podgl\u0105dania&#8221; wiadomo\u015bci przesy\u0142anych magistralami CAN w naszych samochodach. Nieco p\u00f3\u017aniej pokaza\u0142em Wam jak mo\u017cna wyci\u0105gn\u0105\u0107 z u\u017cyteczne dane z pozornie niezrozumia\u0142ego mrowia cyferek. Metoda ta ma jednak jedn\u0105 istotn\u0105 wad\u0119 &#8211; niezmiernie trudno jest \u015bledzi\u0107 zawarto\u015b\u0107 kilku-kilkunastu wiadomo\u015bci CAN na raz w poszukiwaniu jednego zmieniaj\u0105cego si\u0119 bajtu.<\/p>\n<p>St\u0105d pojawi\u0142 si\u0119 pomys\u0142 aby analizowa\u0107 zawarto\u015b\u0107 odbieranych wiadomo\u015bci CAN po stronie naszego urz\u0105dzenia i tam wykrywa\u0107 zmieniaj\u0105ce si\u0119 fragmenty datagram\u00f3w. Maj\u0105c tak\u0105 informacj\u0119 mo\u017cna je nast\u0119pnie oznaczy\u0107 np. innym kolorem lub pogrubion\u0105 czcionk\u0105 w czasie wy\u015bwietlania. Efekt ko\u0144cowy jak zwykle uchwyci\u0142em na filmie \ud83d\ude42 Za pomoc\u0105 symulatora impulsatora skrzyni bieg\u00f3w zmieniamy pr\u0119dko\u015b\u0107.<\/p>\n<p><iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/-PIlIfYtdwY\" frameborder=\"0\" allow=\"autoplay; encrypted-media\" allowfullscreen><\/iframe><\/p>\n<p>Jak wida\u0107 kolor zaznaczenia nie znika od razu, ale stopniowo si\u0119 wygasza, sygnalizuj\u0105c kt\u00f3ry bajt uleg\u0142 zmianie. Poprawia to nieco czytelno\u015b\u0107 i u\u0142atwia analiz\u0119 danych.<\/p>","protected":false},"excerpt":{"rendered":"<p>Niemal\u017ce na samym pocz\u0105tku naszego projektu doda\u0142em mo\u017cliwo\u015b\u0107 &#8222;pods\u0142uchiwania i podgl\u0105dania&#8221; wiadomo\u015bci przesy\u0142anych magistralami CAN w naszych samochodach. Nieco p\u00f3\u017aniej pokaza\u0142em Wam jak mo\u017cna wyci\u0105gn\u0105\u0107 z u\u017cyteczne dane z pozornie niezrozumia\u0142ego mrowia cyferek. Metoda ta ma jednak jedn\u0105 istotn\u0105 wad\u0119 &#8211; niezmiernie trudno jest \u015bledzi\u0107 zawarto\u015b\u0107 kilku-kilkunastu wiadomo\u015bci CAN na raz w poszukiwaniu jednego zmieniaj\u0105cego [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1008,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":{"0":"post-995","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","6":"hentry","7":"category-stodni","9":"post-with-thumbnail","10":"post-with-thumbnail-large"},"_links":{"self":[{"href":"https:\/\/hayperek.pl\/en\/wp-json\/wp\/v2\/posts\/995","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hayperek.pl\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hayperek.pl\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hayperek.pl\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hayperek.pl\/en\/wp-json\/wp\/v2\/comments?post=995"}],"version-history":[{"count":2,"href":"https:\/\/hayperek.pl\/en\/wp-json\/wp\/v2\/posts\/995\/revisions"}],"predecessor-version":[{"id":997,"href":"https:\/\/hayperek.pl\/en\/wp-json\/wp\/v2\/posts\/995\/revisions\/997"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hayperek.pl\/en\/wp-json\/wp\/v2\/media\/1008"}],"wp:attachment":[{"href":"https:\/\/hayperek.pl\/en\/wp-json\/wp\/v2\/media?parent=995"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hayperek.pl\/en\/wp-json\/wp\/v2\/categories?post=995"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hayperek.pl\/en\/wp-json\/wp\/v2\/tags?post=995"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}