{"id":27368,"date":"2025-04-19T19:32:28","date_gmt":"2025-04-19T11:32:28","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/27368.html"},"modified":"2025-04-19T19:32:28","modified_gmt":"2025-04-19T11:32:28","slug":"%e6%a0%91%e8%8e%93%e6%b4%becan%e9%80%9a%e8%ae%af","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/27368.html","title":{"rendered":"\u6811\u8393\u6d3ecan\u901a\u8baf"},"content":{"rendered":"<p>\u7531\u4e8e\u6811\u8393\u6d3e\u4e0d\u5177\u5907can\u901a\u8baf&#xff0c;\u6545\u4f7f\u7528mcp2515\u5b9e\u73b0spi\u8f6ccan<\/p>\n<p>\u542f\u7528spi&#xff1a;sudo raspi-config<\/p>\n<p style=\"text-align:center\"><img decoding=\"async\" alt=\"\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250419113227-680389cb0fc52.jpg\" \/><\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<img decoding=\"async\" alt=\"\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250419113227-680389cb4de67.jpg\" \/><\/p>\n<p>\u5b89\u88c5can\u5de5\u5177&#xff1a;<\/p>\n<p>sudo apt-get update<br \/>\nsudo apt-get install can-utils<\/p>\n<p>\u52a0\u8f7d MCP2515 \u9a71\u52a8&#xff1a;<\/p>\n<p>sudo modprobe can<br \/>\nsudo modprobe can_raw<br \/>\nsudo modprobe mcp251x<\/p>\n<p>\u7f16\u8f91 \/boot\/config.txt \u6587\u4ef6&#xff0c;\u4ee5\u52a0\u8f7d\u6b63\u786e\u7684\u8bbe\u5907\u6811\u8986\u76d6\u6765\u652f\u6301 MCP2515 \u6a21\u5757&#xff1a;<\/p>\n<p>dtoverlay&#061;mcp2515-can0,oscillator&#061;8000000,interrupt&#061;6\/\/oscillator\u6676\u632f\u9700\u8981\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u8bbe\u7f6e&#xff0c;interrupt\u4e2d\u65ad\u5f15\u811a-gpio6 wpi\u7f16\u7801<br \/>\ndtoverlay&#061;spi-bcm2835<\/p>\n<p>\u4f7f\u7528\u56de\u73af\u5730\u5740\u6d4b\u8bd5can\u901a\u8baf<\/p>\n<p>sudo ip link set can0 up type can bitrate 500000 loopback on<\/p>\n<p>\u542f\u7528can\u76d1\u542c<\/p>\n<p>candump can0<\/p>\n<p>\u53d1\u9001\u6570\u636e<\/p>\n<p>cansend can0 123#1122334455667788<\/p>\n<p>\u68c0\u67e5 MCP2515 \u9a71\u52a8\u662f\u5426\u5df2\u52a0\u8f7d\u3002\u8fd0\u884c\u4ee5\u4e0b\u547d\u4ee4\u68c0\u67e5&#xff1a;<\/p>\n<p>lsmod | grep mcp251x<\/p>\n<p>\u5982\u679c\u6ca1\u6709\u770b\u5230 mcp251x \u6a21\u5757&#xff0c;\u5c1d\u8bd5\u624b\u52a8\u52a0\u8f7d\u9a71\u52a8&#xff1a;<\/p>\n<p>sudo modprobe mcp251x<\/p>\n<p>\u786e\u8ba4\u662f\u5426\u5b89\u88c5\u4e86 can-utils&#xff0c;\u5e76\u4f7f\u7528 ip \u547d\u4ee4\u67e5\u770b\u63a5\u53e3\u5217\u8868&#xff1a;<\/p>\n<p>ip link show<\/p>\n<p>\u5173\u95ed CAN \u63a5\u53e3&#xff08;\u5982\u679c\u5df2\u7ecf\u542f\u52a8&#xff09;&#xff1a;<\/p>\n<p>sudo ip link set can0 down<\/p>\n<p>\u5173\u95ed\u672c\u5730\u56de\u73af<\/p>\n<p>sudo ip link set can0 down\/\/\u5173\u95ed<br \/>\nsudo ip link set can0 type can loopback off\/\/\u5173\u95ed\u672c\u5730\u56de\u73af<br \/>\nsudo ip link set can0 up type can bitrate 500000\/\/\u542f\u52a8can\u8bbe\u7f6e\u6ce2\u7279\u7387 <\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb1k\u6b21\uff0c\u70b9\u8d5e5\u6b21\uff0c\u6536\u85cf4\u6b21\u3002\u7531\u4e8e\u6811\u8393\u6d3e\u4e0d\u5177\u5907can\u901a\u8baf\uff0c\u6545\u4f7f\u7528mcp2515\u5b9e\u73b0spi\u8f6ccan\u3002\u68c0\u67e5 MCP2515 \u9a71\u52a8\u662f\u5426\u5df2\u52a0\u8f7d\u3002\u542f\u7528spi\uff1asudo raspi-config\u3002\u4f7f\u7528\u56de\u73af\u5730\u5740\u6d4b\u8bd5can\u901a\u8baf\u3002_\u6811\u8393\u6d3e can<\/p>\n","protected":false},"author":2,"featured_media":27366,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[58,43,44],"topic":[],"class_list":["post-27368","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-linux","tag-43","tag-44"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - 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