{"id":63275,"date":"2025-04-29T10:52:30","date_gmt":"2025-04-29T02:52:30","guid":{"rendered":"https:\/\/fwq.ai\/blog\/63275\/"},"modified":"2025-04-29T10:52:30","modified_gmt":"2025-04-29T02:52:30","slug":"%e6%b7%b1%e5%85%a5%e7%a0%94%e7%a9%b6embedded-linux%e7%9a%84%e7%89%b9%e7%82%b9%e5%92%8c%e4%bc%98%e5%8a%bf-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/63275\/","title":{"rendered":"\u6df1\u5165\u7814\u7a76Embedded Linux\u7684\u7279\u70b9\u548c\u4f18\u52bf"},"content":{"rendered":"

\"\u6df1\u5165\u7814\u7a76Embedded<\/p>\n

Embedded Linux\u662f\u4e00\u79cd\u5728\u5d4c\u5165\u5f0f\u8bbe\u5907\u4e2d\u8fd0\u884c\u7684Linux\u64cd\u4f5c\u7cfb\u7edf\uff0c\u5b83\u5177\u6709\u8bb8\u591a\u72ec\u7279\u7684\u7279\u70b9\u548c\u4f18\u52bf\u3002\u672c\u6587\u5c06\u6df1\u5165\u63a2\u8ba8Embedded Linux\u7684\u7279\u70b9\u548c\u4f18\u52bf\uff0c\u5e76\u63d0\u4f9b\u4e00\u4e9b\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u6765\u8bf4\u660e\u5b83\u4eec\u7684\u5e94\u7528\u3002<\/p>\n

Embedded Linux\u7684\u7279\u70b9<\/h3>\n

1. \u5f00\u653e\u6e90\u4ee3\u7801<\/strong>
Embedded Linux\u662f\u57fa\u4e8eLinux\u5185\u6838\u5f00\u53d1\u7684\uff0c\u9075\u5faa\u5f00\u6e90\u8f6f\u4ef6\u7684\u539f\u5219\uff0c\u610f\u5473\u7740\u4efb\u4f55\u4eba\u90fd\u53ef\u4ee5\u67e5\u770b\u3001\u4fee\u6539\u3001\u548c\u91cd\u65b0\u5206\u53d1\u5176\u6e90\u4ee3\u7801\u3002\u8fd9\u79cd\u5f00\u653e\u6e90\u4ee3\u7801\u7684\u7279\u6027\u4e3a\u5f00\u53d1\u8005\u63d0\u4f9b\u4e86\u66f4\u5927\u7684\u81ea\u7531\u5ea6\u548c\u7075\u6d3b\u6027\uff0c\u4f7f\u5176\u80fd\u591f\u9488\u5bf9\u7279\u5b9a\u9700\u6c42\u8fdb\u884c\u5b9a\u5236\u548c\u4f18\u5316\u3002<\/p>\n

2. \u53ef\u79fb\u690d\u6027<\/strong>
\u7531\u4e8eLinux\u662f\u4e00\u79cd\u9ad8\u5ea6\u53ef\u79fb\u690d\u7684\u64cd\u4f5c\u7cfb\u7edf\uff0c\u56e0\u6b64Embedded Linux\u4e5f\u5177\u5907\u826f\u597d\u7684\u53ef\u79fb\u690d\u6027\u3002\u5f00\u53d1\u8005\u53ef\u4ee5\u8f7b\u677e\u5730\u79fb\u690dEmbedded Linux\u5230\u4e0d\u540c\u7684\u5d4c\u5165\u5f0f\u5e73\u53f0\u4e0a\uff0c\u800c\u65e0\u9700\u91cd\u65b0\u7f16\u5199\u5927\u90e8\u5206\u5e94\u7528\u7a0b\u5e8f\u4ee3\u7801\u3002<\/p>\n

3. \u591a\u4efb\u52a1\u5904\u7406<\/strong>
Embedded Linux\u652f\u6301\u591a\u4efb\u52a1\u5904\u7406\uff0c\u80fd\u591f\u540c\u65f6\u8fd0\u884c\u591a\u4e2a\u8fdb\u7a0b\u548c\u7ebf\u7a0b\uff0c\u5e76\u63d0\u4f9b\u826f\u597d\u7684\u4efb\u52a1\u8c03\u5ea6\u548c\u8d44\u6e90\u7ba1\u7406\u673a\u5236\u3002\u8fd9\u4f7f\u5f97\u5d4c\u5165\u5f0f\u8bbe\u5907\u53ef\u4ee5\u5904\u7406\u591a\u91cd\u4efb\u52a1\uff0c\u63d0\u9ad8\u7cfb\u7edf\u7684\u6548\u7387\u548c\u6027\u80fd\u3002<\/p>\n

4. \u8f7b\u91cf\u7ea7<\/strong>
\u867d\u7136Linux\u662f\u4e00\u4e2a\u529f\u80fd\u5f3a\u5927\u7684\u64cd\u4f5c\u7cfb\u7edf\uff0c\u4f46Embedded Linux\u53ef\u4ee5\u9488\u5bf9\u5d4c\u5165\u5f0f\u8bbe\u5907\u8fdb\u884c\u5b9a\u5236\uff0c\u53bb\u9664\u4e0d\u5fc5\u8981\u7684\u529f\u80fd\u548c\u6a21\u5757\uff0c\u4ece\u800c\u4f7f\u5f97\u7cfb\u7edf\u66f4\u52a0\u8f7b\u91cf\u7ea7\uff0c\u5360\u7528\u66f4\u5c11\u7684\u5b58\u50a8\u7a7a\u95f4\u548c\u5185\u5b58\u3002<\/p>\n

Embedded Linux\u7684\u4f18\u52bf<\/h3>\n

1. \u5f3a\u5927\u7684\u793e\u533a\u652f\u6301<\/strong>
\u7531\u4e8eLinux\u662f\u4e00\u4e2a\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edf\uff0c\u5728\u5168\u7403\u8303\u56f4\u5185\u6709\u5e9e\u5927\u7684\u5f00\u53d1\u8005\u793e\u533a\uff0c\u4e3a\u5d4c\u5165\u5f0f\u5f00\u53d1\u8005\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u8d44\u6e90\u548c\u652f\u6301\u3002\u65e0\u8bba\u662f\u5728\u89e3\u51b3\u6280\u672f\u95ee\u9898\u8fd8\u662f\u5728\u83b7\u53d6\u6700\u65b0\u7684\u5f00\u53d1\u5de5\u5177\u548c\u6587\u6863\u65b9\u9762\uff0c\u5f00\u53d1\u8005\u90fd\u53ef\u4ee5\u53d7\u76ca\u4e8e\u8fd9\u4e2a\u6d3b\u8dc3\u7684\u793e\u533a\u3002<\/p>\n

2. \u4e30\u5bcc\u7684\u8f6f\u4ef6\u751f\u6001\u7cfb\u7edf<\/strong>
Linux\u62e5\u6709\u4e30\u5bcc\u7684\u8f6f\u4ef6\u751f\u6001\u7cfb\u7edf\uff0c\u5176\u4e2d\u5305\u62ec\u5404\u79cd\u5f00\u6e90\u5de5\u5177\u3001\u5e94\u7528\u7a0b\u5e8f\u548c\u9a71\u52a8\u7a0b\u5e8f\u3002\u5728Embedded Linux\u4e2d\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u8f7b\u677e\u5730\u96c6\u6210\u8fd9\u4e9b\u8f6f\u4ef6\u8d44\u6e90\uff0c\u4ee5\u6ee1\u8db3\u4e0d\u540c\u5e94\u7528\u573a\u666f\u4e0b\u7684\u9700\u6c42\uff0c\u4ece\u800c\u52a0\u901f\u5f00\u53d1\u8fc7\u7a0b\u3002<\/p>\n

3. \u53ef\u9760\u6027\u548c\u7a33\u5b9a\u6027<\/strong>
Linux\u4f5c\u4e3a\u4e00\u4e2a\u6210\u719f\u7684\u64cd\u4f5c\u7cfb\u7edf\uff0c\u5177\u5907\u826f\u597d\u7684\u53ef\u9760\u6027\u548c\u7a33\u5b9a\u6027\u3002Embedded Linux\u7ee7\u627f\u4e86\u8fd9\u4e00\u4f18\u52bf\uff0c\u80fd\u591f\u5728\u5d4c\u5165\u5f0f\u8bbe\u5907\u4e0a\u63d0\u4f9b\u51fa\u8272\u7684\u6027\u80fd\u548c\u7a33\u5b9a\u6027\uff0c\u786e\u4fdd\u7cfb\u7edf\u957f\u65f6\u95f4\u7a33\u5b9a\u8fd0\u884c\u3002<\/p>\n

\u4ee3\u7801\u793a\u4f8b<\/h3>\n

\u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5355\u7684Embedded Linux\u5e94\u7528\u7a0b\u5e8f\u793a\u4f8b\uff0c\u7528\u4e8e\u63a7\u5236LED\u706f\u7684\u95ea\u70c1\uff1a<\/p>\n

#include <stdio.h>\n#include <unistd.h>\n#include <sys>\n#include <sys>\n#include <fcntl.h>\n\n#define LED_ON  1\n#define LED_OFF 0\n\nint main() {\n    int fd, ret;\n    int state = LED_OFF;\n\n    fd = open(\"\/dev\/led\", O_RDWR);\n    if(fd <p>\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u901a\u8fc7\u6253\u5f00LED\u8bbe\u5907\u6587\u4ef6\/dev\/led\u6765\u63a7\u5236LED\u706f\u7684\u95ea\u70c1\uff0c\u901a\u8fc7\u4e0d\u65ad\u6539\u53d8state\u53d8\u91cf\u7684\u503c\u6765\u63a7\u5236LED\u7684\u5f00\u5173\u72b6\u6001\uff0c\u5e76\u4f7f\u7528usleep\u51fd\u6570\u5b9e\u73b0\u5ef6\u65f6\u6548\u679c\u3002\u8fd9\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\u5c55\u793a\u4e86Embedded Linux\u5728\u5d4c\u5165\u5f0f\u8bbe\u5907\u4e2d\u7684\u5e94\u7528\uff0c\u901a\u8fc7\u64cd\u4f5c\u7cfb\u7edf\u63d0\u4f9b\u7684API\u6765\u8bbf\u95ee\u786c\u4ef6\u8bbe\u5907\u5e76\u63a7\u5236\u5176\u884c\u4e3a\u3002<\/p>\n<h3>\u7ed3\u8bba<\/h3>\n<p>Embedded Linux\u4f5c\u4e3a\u4e00\u79cd\u5f3a\u5927\u7684\u5d4c\u5165\u5f0f\u64cd\u4f5c\u7cfb\u7edf\uff0c\u5177\u6709\u5f00\u653e\u6e90\u4ee3\u7801\u3001\u53ef\u79fb\u690d\u6027\u3001\u591a\u4efb\u52a1\u5904\u7406\u7b49\u7279\u70b9\uff0c\u4ee5\u53ca\u793e\u533a\u652f\u6301\u3001\u8f6f\u4ef6\u751f\u6001\u7cfb\u7edf\u548c\u7a33\u5b9a\u6027\u7b49\u4f18\u52bf\u3002\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9Embedded Linux\u4f5c\u4e3a\u5d4c\u5165\u5f0f\u8bbe\u5907\u7684\u64cd\u4f5c\u7cfb\u7edf\uff0c\u5229\u7528\u5176\u4e30\u5bcc\u7684\u8d44\u6e90\u548c\u529f\u80fd\u6765\u63d0\u9ad8\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002\u901a\u8fc7\u4e0d\u65ad\u6df1\u5165\u7814\u7a76\u548c\u5b9e\u8df5\uff0c\u6211\u4eec\u53ef\u4ee5\u66f4\u597d\u5730\u53d1\u6398Embedded Linux\u7684\u6f5c\u529b\u548c\u4ef7\u503c\uff0c\u4e3a\u5d4c\u5165\u5f0f\u7cfb\u7edf\u7684\u5f00\u53d1\u548c\u5e94\u7528\u5e26\u6765\u66f4\u591a\u53ef\u80fd\u6027\u3002<\/p><\/fcntl.h><\/sys><\/sys><\/unistd.h><\/stdio.h><\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
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