{"id":830,"date":"2026-04-16T11:48:36","date_gmt":"2026-04-16T03:48:36","guid":{"rendered":"https:\/\/hsiang.cc\/?p=830"},"modified":"2026-04-16T11:48:36","modified_gmt":"2026-04-16T03:48:36","slug":"c%e5%a5%bd%e7%bf%92%e6%85%a3%e7%ad%86%e8%a8%98%e5%91%bd%e5%90%8d%e4%b8%8d%e6%98%af%e5%b0%8f%e4%ba%8b-%e8%ae%93%e7%a8%8b%e5%bc%8f%e7%a2%bc%e8%87%aa%e5%b7%b1%e8%aa%aa%e8%a9%b1","status":"publish","type":"post","link":"https:\/\/hsiang.cc\/?p=830","title":{"rendered":"[C\u597d\u7fd2\u6163\u7b46\u8a18]\u547d\u540d\u4e0d\u662f\u5c0f\u4e8b \u2014 \u8b93\u7a0b\u5f0f\u78bc\u81ea\u5df1\u8aaa\u8a71"},"content":{"rendered":"<h2>\u524d\u8a00<\/h2>\n<p>\u525b\u958b\u59cb\u5beb C \u7684\u6642\u5019\uff0c\u6211\u89ba\u5f97\u547d\u540d\u9019\u4ef6\u4e8b\u4e0d\u91cd\u8981\u3002<\/p>\n<p>\u53cd\u6b63\u7de8\u8b6f\u5668\u4e0d\u5728\u4e4e\u8b8a\u6578\u53eb <code>a<\/code> \u9084\u662f <code>temperature<\/code>\uff0c\u7a0b\u5f0f\u8dd1\u8d77\u4f86\u7d50\u679c\u4e00\u6a23\u3002<br \/>\n\u76f4\u5230\u6709\u4e00\u5929\uff0c\u6211\u6253\u958b\u4e09\u500b\u6708\u524d\u81ea\u5df1\u5beb\u7684\u7a0b\u5f0f\u78bc\uff0c\u76ef\u8457\u4e00\u500b\u53eb <code>tmp2<\/code> \u7684\u8b8a\u6578\u770b\u4e86\u4e94\u5206\u9418\uff0c<br \/>\n\u5b8c\u5168\u4e0d\u77e5\u9053\u5b83\u662f\u5e79\u561b\u7684\u3002<\/p>\n<p>\u90a3\u500b\u4eba\u662f\u6211\u81ea\u5df1\u3002<\/p>\n<p>\u5f9e\u90a3\u4e4b\u5f8c\uff0c\u6211\u958b\u59cb\u8a8d\u771f\u5c0d\u5f85\u547d\u540d\u9019\u4ef6\u4e8b\u3002\u9019\u7bc7\u662f\u6211\u7684\u4e00\u4e9b\u6574\u7406\uff0c<br \/>\n\u4e0d\u662f\u4ec0\u9ebc\u696d\u754c\u6a19\u6e96\uff0c\u5c31\u662f\u6211\u89ba\u5f97\u300c\u9019\u6a23\u5beb\uff0c\u4e4b\u5f8c\u6bd4\u8f03\u4e0d\u6703\u60f3\u7f75\u81ea\u5df1\u300d\u7684\u7fd2\u6163\u3002<\/p>\n<hr \/>\n<h2>\u58de\u547d\u540d\u9577\u4ec0\u9ebc\u6a23\u5b50<\/h2>\n<p><!--more--><\/p>\n<p>\u5148\u770b\u5e7e\u500b\u771f\u5be6\u4e16\u754c\u5e38\u898b\u7684\u4f8b\u5b50\uff08\u6211\u81ea\u5df1\u4e5f\u5beb\u904e\uff09\uff1a<\/p>\n<pre><code class=\"language-c\">int d;           \/\/ \u4ec0\u9ebc d\uff1fday\uff1fdata\uff1fdistance\uff1f\nint tmp, tmp2;   \/\/ \u597d\uff0c\u90a3 tmp2 \u662f tmp \u7684\u4ec0\u9ebc\uff1f\nvoid process();  \/\/ \u8655\u7406\u4ec0\u9ebc\uff1f\nint flag;        \/\/ \u54ea\u500b flag\uff1f\u4ee3\u8868\u4ec0\u9ebc\u72c0\u614b\uff1f\nint data[256];   \/\/ data \u662f\u4ec0\u9ebc data\uff1f<\/code><\/pre>\n<p>\u9019\u4e9b\u547d\u540d\u6709\u500b\u5171\u540c\u554f\u984c\uff1a<strong>\u4f60\u5fc5\u9808\u53bb\u770b\u5be6\u4f5c\u624d\u80fd\u77e5\u9053\u5b83\u662f\u4ec0\u9ebc<\/strong>\u3002<\/p>\n<p>\u597d\u7684\u547d\u540d\u61c9\u8a72\u8b93\u4f60\u5149\u770b\u540d\u5b57\u5c31\u5927\u6982\u77e5\u9053\u5b83\u7684\u7528\u9014\u3002<\/p>\n<hr \/>\n<h2>\u5e7e\u500b\u6211\u5728\u7528\u7684\u539f\u5247<\/h2>\n<h3>1. \u540d\u5b57\u8981\u8aaa\u51fa\u300c\u5b83\u662f\u4ec0\u9ebc\u300d\uff0c\u4e0d\u662f\u300c\u5b83\u600e\u9ebc\u7528\u300d<\/h3>\n<pre><code class=\"language-c\">\/\/ \u274c \u63cf\u8ff0\u7528\u9014\uff0c\u4f46\u4e0d\u5920\u6e05\u695a\nint counter;\nint value;\nchar buf[64];\n\n\/\/ \u2705 \u8aaa\u6e05\u695a\u662f\u4ec0\u9ebc\nint retry_count;\nint temperature_celsius;\nchar device_name[64];<\/code><\/pre>\n<p>\u52a0\u4e00\u9ede\u4e0a\u4e0b\u6587\uff0c\u95b1\u8b80\u7684\u4eba\u4e0d\u7528\u731c\u3002<\/p>\n<hr \/>\n<h3>2. \u5e03\u6797\u503c\uff08\u6216 flag\uff09\u7528 is<em> \/ has<\/em> \/ enable_ \u958b\u982d<\/h3>\n<p>\u9019\u500b\u7fd2\u6163\u8b93 if \u689d\u4ef6\u8b80\u8d77\u4f86\u50cf\u82f1\u6587\u53e5\u5b50\uff1a<\/p>\n<pre><code class=\"language-c\">\/\/ \u274c\nint connected;\nint error;\nint mode;\n\n\/\/ \u2705\nbool is_connected;\nbool has_error;\nbool uart_tx_enable;<\/code><\/pre>\n<pre><code class=\"language-c\">\/\/ \u8b80\u8d77\u4f86\u5c31\u5f88\u81ea\u7136\nif (is_connected &amp;&amp; !has_error) {\n    send_data();\n}<\/code><\/pre>\n<p>\u6bd4\u8d77 <code>if (connected == 1 &amp;&amp; error == 0)<\/code>\uff0c\u597d\u8b80\u592a\u591a\u4e86\u3002<\/p>\n<hr \/>\n<h3>3. \u51fd\u5f0f\u540d\u7a31\u7528\u300c\u52d5\u8a5e + \u540d\u8a5e\u300d<\/h3>\n<p>\u51fd\u5f0f\u662f\u505a\u4e8b\u7684\uff0c\u540d\u5b57\u8981\u53cd\u6620\u5b83\u505a\u4e86\u4ec0\u9ebc\u52d5\u4f5c\uff1a<\/p>\n<pre><code class=\"language-c\">\/\/ \u274c \u4e0d\u6e05\u695a\u505a\u4ec0\u9ebc\nvoid sensor();\nint data();\nvoid uart();\n\n\/\/ \u2705 \u52d5\u8a5e + \u540d\u8a5e\nvoid read_temperature_sensor();\nint get_battery_voltage();\nvoid uart_send_packet();<\/code><\/pre>\n<p>\u5e38\u7528\u52d5\u8a5e\u53c3\u8003\uff1a<\/p>\n<ul>\n<li><code>get_<\/code> \/ <code>set_<\/code> \u2014 \u53d6\u5f97\u6216\u8a2d\u5b9a\u67d0\u500b\u503c<\/li>\n<li><code>read_<\/code> \/ <code>write_<\/code> \u2014 \u8b80\u5beb\u786c\u9ad4\u6216\u8cc7\u6599<\/li>\n<li><code>init_<\/code> \/ <code>deinit_<\/code> \u2014 \u521d\u59cb\u5316\u8207\u53cd\u521d\u59cb\u5316<\/li>\n<li><code>enable_<\/code> \/ <code>disable_<\/code> \u2014 \u958b\u95dc\u67d0\u500b\u529f\u80fd<\/li>\n<li><code>is_<\/code> \/ <code>has_<\/code> \u2014 \u56de\u50b3\u5e03\u6797\u503c\u7684\u67e5\u8a62\u51fd\u5f0f<\/li>\n<li><code>handle_<\/code> \/ <code>process_<\/code> \u2014 \u8655\u7406\u67d0\u500b\u4e8b\u4ef6\u6216\u8cc7\u6599<\/li>\n<\/ul>\n<hr \/>\n<h3>4. \u7e2e\u5beb\u8981\u8b39\u614e\uff0c\u5e38\u898b\u7684\u624d\u80fd\u7e2e<\/h3>\n<p>\u7e2e\u5beb\u53ef\u4ee5\u8b93\u540d\u5b57\u77ed\u4e00\u9ede\uff0c\u4f46\u4e0d\u719f\u6089\u7684\u7e2e\u5beb\u53cd\u800c\u66f4\u96e3\u8b80\uff1a<\/p>\n<pre><code class=\"language-c\">\/\/ \u274c \u81ea\u5275\u7e2e\u5beb\uff0c\u53ea\u6709\u4f60\u770b\u5f97\u61c2\nint tp;       \/\/ temperature? top? type?\nvoid rd_cfg();\nint btn_st;\n\n\/\/ \u2705 \u7e2e\u5beb\u53ea\u7528\u5927\u5bb6\u90fd\u61c2\u7684\nint temp_c;           \/\/ temperature in Celsius\uff0c\u9084\u7b97\u6e05\u695a\nvoid read_config();   \/\/ \u4e0d\u7e2e\u6bd4\u8f03\u597d\nint btn_state;        \/\/ btn \u7b97\u5e38\u898b\u7e2e\u5beb<\/code><\/pre>\n<p>\u6211\u7684\u539f\u5247\u662f\uff1a<strong>\u5982\u679c\u4f60\u4e0d\u78ba\u5b9a\u540c\u4e8b\u770b\u5f97\u61c2\uff0c\u5c31\u4e0d\u8981\u7e2e<\/strong>\u3002<\/p>\n<hr \/>\n<h3>5. \u5e38\u6578\u548c Macro \u5168\u5927\u5beb\u52a0\u5e95\u7dda<\/h3>\n<p>\u9019\u662f C \u7684\u6163\u4f8b\uff0c\u8b93\u4f60\u4e00\u773c\u5c31\u77e5\u9053\u9019\u662f\u7de8\u8b6f\u671f\u5e38\u6578\uff1a<\/p>\n<pre><code class=\"language-c\">\/\/ \u274c\n#define bufferSize 256\n#define maxRetry 3\nconst int timeout = 5000;\n\n\/\/ \u2705\n#define BUFFER_SIZE     256\n#define MAX_RETRY_COUNT 3\nconst int TIMEOUT_MS  = 5000;<\/code><\/pre>\n<p>\u770b\u5230\u5168\u5927\u5beb\uff0c\u5c31\u77e5\u9053\u9019\u500b\u503c\u4e0d\u6703\u5728 runtime \u6539\u8b8a\u3002<\/p>\n<hr \/>\n<h3>6. \u5d4c\u5165\u5f0f\u5e38\u898b\uff1a\u52a0\u6a21\u7d44\u524d\u7db4<\/h3>\n<p>\u5728\u5d4c\u5165\u5f0f\u5c08\u6848\u88e1\uff0cC \u6c92\u6709 namespace\uff0c\u5f88\u5bb9\u6613\u649e\u540d\u3002<br \/>\n\u6211\u7684\u7fd2\u6163\u662f\u7528\u6a21\u7d44\u540d\u7a31\u7576\u524d\u7db4\uff1a<\/p>\n<pre><code class=\"language-c\">\/\/ uart \u6a21\u7d44\nvoid uart_init(uint32_t baudrate);\nvoid uart_send(const uint8_t *data, size_t len);\nint  uart_receive(uint8_t *buf, size_t buf_size, uint32_t timeout_ms);\n\n\/\/ sensor \u6a21\u7d44\nvoid    sensor_init(void);\nint16_t sensor_get_temperature(void);\nuint8_t sensor_get_humidity(void);<\/code><\/pre>\n<p>\u9019\u6a23\u5c31\u7b97\u6c92\u6709 namespace\uff0c\u770b\u51fd\u5f0f\u540d\u7a31\u4e5f\u77e5\u9053\u5b83\u5c6c\u65bc\u54ea\u500b\u6a21\u7d44\u3002<br \/>\n\u800c\u4e14 IDE \u7684\u81ea\u52d5\u88dc\u5168\u4e5f\u6703\u628a\u540c\u6a21\u7d44\u7684\u51fd\u5f0f\u805a\u5728\u4e00\u8d77\uff0c\u5f88\u65b9\u4fbf\u3002<\/p>\n<hr \/>\n<h2>\u95dc\u65bc\u5308\u7259\u5229\u547d\u540d\u6cd5<\/h2>\n<p>\u5f88\u591a\u820a\u7684 C \u5c08\u6848\uff08\u5c24\u5176\u662f Windows API \u6642\u4ee3\uff09\u6703\u770b\u5230\u9019\u7a2e\u5beb\u6cd5\uff1a<\/p>\n<pre><code class=\"language-c\">int iCount;       \/\/ i \u4ee3\u8868 int\nchar *pszName;    \/\/ p \u4ee3\u8868 pointer\uff0csz \u4ee3\u8868 null-terminated string\nBOOL bIsReady;    \/\/ b \u4ee3\u8868 bool<\/code><\/pre>\n<p>\u6211\u500b\u4eba\u7684\u770b\u6cd5\u662f\uff1a<strong>\u73fe\u4ee3\u958b\u767c\u4e0d\u592a\u9700\u8981\u9019\u6a23\u505a\u4e86<\/strong>\u3002<\/p>\n<p>\u539f\u672c\u7684\u7528\u610f\u662f\u8b93\u4f60\u4e00\u773c\u770b\u51fa\u578b\u5225\uff0c\u4f46\u73fe\u5728 IDE \u90fd\u6703\u76f4\u63a5\u544a\u8a34\u4f60\u578b\u5225\uff0c<br \/>\n\u53cd\u800c\u662f\u90a3\u500b\u524d\u7db4\u8b93\u540d\u5b57\u8b8a\u5f97\u96e3\u8b80\u3002<\/p>\n<p>\u4e0d\u904e\u5982\u679c\u4f60\u9032\u7684\u516c\u53f8\u6216\u5c08\u6848\u6709\u9019\u500b\u6163\u4f8b\uff0c\u5c31\u8ddf\u8457\u8d70\u3002<br \/>\n\u547d\u540d\u98a8\u683c\u7684\u4e00\u81f4\u6027\u6bd4\u300c\u54ea\u7a2e\u98a8\u683c\u6700\u597d\u300d\u66f4\u91cd\u8981\u3002<\/p>\n<hr \/>\n<h2>\u4e00\u500b\u5be6\u969b\u7684\u5c0d\u6bd4<\/h2>\n<p>\u540c\u6a23\u7684\u529f\u80fd\uff0c\u5169\u7a2e\u5beb\u6cd5\uff1a<\/p>\n<pre><code class=\"language-c\">\/\/ \u274c \u7248\u672c\nint f(int x, int y, int *z) {\n    int tmp = x * y;\n    if (tmp &gt; 100) {\n        *z = 1;\n        return -1;\n    }\n    *z = 0;\n    return tmp;\n}<\/code><\/pre>\n<pre><code class=\"language-c\">\/\/ \u2705 \u7248\u672c\nint calculate_power_consumption(int voltage_mv, int current_ma,\n                                bool *is_over_limit) {\n    int power_mw = voltage_mv * current_ma;\n\n    if (power_mw &gt; MAX_POWER_MW) {\n        *is_over_limit = true;\n        return -1;\n    }\n\n    *is_over_limit = false;\n    return power_mw;\n}<\/code><\/pre>\n<p>\u7b2c\u4e8c\u500b\u7248\u672c\uff0c\u4f60\u4e0d\u7528\u770b\u4efb\u4f55\u8aaa\u660e\uff0c\u5c31\u77e5\u9053\uff1a<\/p>\n<ul>\n<li>\u9019\u500b\u51fd\u5f0f\u5728\u7b97\u529f\u8017<\/li>\n<li>\u8f38\u5165\u662f\u96fb\u58d3\uff08\u6beb\u4f0f\uff09\u548c\u96fb\u6d41\uff08\u6beb\u5b89\uff09<\/li>\n<li>\u6709\u500b\u8d85\u9650\u7684 flag<\/li>\n<li>\u56de\u50b3\u529f\u8017\uff08\u6beb\u74e6\uff09\uff0c\u5931\u6557\u56de\u50b3 -1<\/li>\n<\/ul>\n<p>\u9019\u5c31\u662f\u300c\u8b93\u7a0b\u5f0f\u78bc\u81ea\u5df1\u8aaa\u8a71\u300d\u7684\u611f\u89ba\u3002<\/p>\n<hr \/>\n<h2>Checklist<\/h2>\n<p>Code review \u7684\u6642\u5019\u53ef\u4ee5\u5c0d\u7167\u4e00\u4e0b\uff1a<\/p>\n<ul>\n<li>[ ] \u8b8a\u6578\u540d\u7a31\u80fd\u8aaa\u660e\u5b83\u300c\u662f\u4ec0\u9ebc\u300d\uff0c\u4e0d\u9700\u8981\u770b\u5be6\u4f5c\u624d\u61c2<\/li>\n<li>[ ] \u5e03\u6797\u503c \/ flag \u6709\u7528 <code>is_<\/code> \/ <code>has_<\/code> \/ <code>enable_<\/code> \u958b\u982d<\/li>\n<li>[ ] \u51fd\u5f0f\u540d\u7a31\u6709\u300c\u52d5\u8a5e + \u540d\u8a5e\u300d\u7684\u7d50\u69cb<\/li>\n<li>[ ] \u7e2e\u5beb\u53ea\u7528\u5927\u5bb6\u90fd\u61c2\u7684\uff0c\u4e0d\u81ea\u5275\u7e2e\u5beb<\/li>\n<li>[ ] \u5e38\u6578\u548c Macro \u7528\u5168\u5927\u5beb\u52a0\u5e95\u7dda<\/li>\n<li>[ ] \u5d4c\u5165\u5f0f\u6a21\u7d44\u6709\u52a0\u524d\u7db4\uff0c\u907f\u514d\u649e\u540d<\/li>\n<li>[ ] \u547d\u540d\u98a8\u683c\u5728\u6574\u500b\u6a94\u6848\/\u5c08\u6848\u5167\u4e00\u81f4<\/li>\n<\/ul>\n<hr \/>\n<h2>\u5f8c\u8a18<\/h2>\n<p>\u8aaa\u4e86\u9019\u9ebc\u591a\u597d\u7fd2\u6163\uff0c\u4f46\u8aaa\u5be6\u8a71\uff0c\u6211\u81ea\u5df1\u4e5f\u4e0d\u662f\u6bcf\u6b21\u90fd\u505a\u5230\u3002<\/p>\n<p>\u8d95 deadline \u7684\u6642\u5019\u9084\u662f\u6703\u5beb\u51fa <code>tmp<\/code>\u3001<code>buf2<\/code>\u3001<code>flag3<\/code>\u3002<br \/>\n\u7136\u5f8c\u4e09\u500b\u6708\u5f8c\u518d\u770b\uff0c\u53c8\u662f\u90a3\u500b\u719f\u6089\u7684\u300c\u9019\u662f\u4ec0\u9ebc\u9b3c\u300d\u7684\u611f\u89ba\u3002<\/p>\n<p>\u6211\u89ba\u5f97\u547d\u540d\u662f\u4e00\u500b\u9700\u8981\u523b\u610f\u7df4\u7fd2\u7684\u7fd2\u6163\uff0c\u4e0d\u662f\u770b\u5b8c\u4e00\u7bc7\u6587\u7ae0\u5c31\u6703\u7684\u3002<br \/>\n\u6bcf\u6b21 code review \u7684\u6642\u5019\uff0c\u591a\u554f\u4e00\u53e5\u300c\u9019\u500b\u540d\u5b57\u5920\u6e05\u695a\u55ce\uff1f\u300d\uff0c\u6162\u6162\u5c31\u6703\u9032\u6b65\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u524d\u8a00 \u525b\u958b\u59cb\u5beb C \u7684\u6642\u5019\uff0c\u6211\u89ba\u5f97\u547d\u540d\u9019\u4ef6\u4e8b\u4e0d\u91cd\u8981\u3002 \u53cd\u6b63\u7de8\u8b6f\u5668\u4e0d\u5728\u4e4e\u8b8a\u6578\u53eb a &hellip; <a href=\"https:\/\/hsiang.cc\/?p=830\">\u95b1\u8b80\u5168\u6587 <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":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[15],"tags":[918,909,912,922,914,915,919,911,921,920,910,916,913,917],"class_list":{"0":"post-830","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"hentry","6":"category-prog","7":"tag-clean-code-c","8":"tag-c","11":"tag-914","12":"tag-915","14":"tag-911","15":"tag-921","16":"tag-920","17":"tag-910","18":"tag-916","19":"tag-913","20":"tag-917"},"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/hsiang.cc\/index.php?rest_route=\/wp\/v2\/posts\/830","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hsiang.cc\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hsiang.cc\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hsiang.cc\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hsiang.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=830"}],"version-history":[{"count":1,"href":"https:\/\/hsiang.cc\/index.php?rest_route=\/wp\/v2\/posts\/830\/revisions"}],"predecessor-version":[{"id":831,"href":"https:\/\/hsiang.cc\/index.php?rest_route=\/wp\/v2\/posts\/830\/revisions\/831"}],"wp:attachment":[{"href":"https:\/\/hsiang.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=830"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hsiang.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=830"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hsiang.cc\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=830"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}