{"id":122406,"date":"2026-11-04T21:49:20","date_gmt":"2026-11-04T13:49:20","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/122406.html"},"modified":"2026-11-04T21:49:20","modified_gmt":"2026-11-04T13:49:20","slug":"4-1%e9%9d%99%e6%80%81%e6%95%b0%e7%a0%81%e7%ae%a1%e6%98%be%e7%a4%ba","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/122406.html","title":{"rendered":"4-1\u9759\u6001\u6570\u7801\u7ba1\u663e\u793a"},"content":{"rendered":"

\u672c\u6b21\u5b66\u4e60\u6709\u5f88\u591a\u77e5\u8bc6\u70b9，\u6211\u5c06\u5206\u6761\u603b\u7ed3
\n\u4e00.\u5355\u4e2a\u6570\u7801\u7ba1
\n\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"
\n\u5355\u4e2a\u6570\u7801\u7ba1\u5206\u4e3a\u5171\u9634\u6781\u548c\u5171\u9633\u6781，\u7b2c\u4e00\u4e2a\u7535\u8def\u662f\u5171\u9634\u6781\u6570\u7801\u7ba1，\u82e5\u4f7f\u8fd9\u4e2a\u6570\u7801\u7ba1\u53ef\u4f7f\u7528，3.8\u90a3\u8fb9\u5e94\u8be5\u63a5\u9634\u6781，\u7b2c\u4e8c\u5f20\u56fe\u662f\u5171\u9633\u6781\u6570\u7801\u7ba1，\u82e5\u4f7f\u6570\u7801\u7ba1\u53ef\u7528\u5e94\u57283.8\u90a3\u8fb9\u63a5\u9633\u6781\u3002
\n\u4e8c.\u591a\u4e2a\u6570\u7801\u7ba1
\n\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"
\n\u591a\u4e2a\u6570\u7801\u7ba1\u548c\u5355\u4e2a\u6570\u7801\u7ba1\u5f88\u76f8\u4f3c，\u533a\u522b\u662f\u5171\u9634\u6781\u7684\u6570\u7801\u7ba1，\u9633\u6781\u548c\u5176\u4ed6\u6570\u7801\u7ba1\u9633\u6781\u76f8\u8fde，\u5171\u9633\u6781\u7684\u540c\u4e0a\u3002\u6bcf\u4e2a\u6570\u7801\u7ba1\u7684\u5171\u6781\u53e6\u4e00\u7aef\u90fd\u548c\u5176\u4ed6\u6570\u7801\u7ba1\u5bf9\u5e94\u76f8\u8fde，\u6bd4\u5982A\u8fde\u63a5A，B\u8fde\u63a5B，\u8fd9\u4e5f\u4f7f\u5f97\u6ca1\u6709\u529e\u6cd5\u8ba9\u6240\u6709\u6570\u7801\u7ba1\u540c\u65f6\u663e\u793a\u4e0d\u540c\u7684\u4fe1\u606f，\u6bd4\u5982\u6211\u9009\u4e2d\u4e86LED1\u548cLED2，\u6211\u8ba9LED1\u663e\u793a5\u5c31\u4e0d\u80fd\u540c\u65f6\u8ba9LED2\u663e\u793a6，\u6700\u591a\u8ba9LED1\u4e0eLED2\u540c\u65f6\u663e\u793a5.
\n\u5f53\u7136，\u5982\u679c\u6211\u4eec\u7ed911\u7ebf\u4e0a\u7535，\u6240\u6709\u7684\u6570\u7801\u7ba1A\u7ebf\u90fd\u4f1a\u4e0a\u7535，\u5982\u679c\u6211\u4eec\u53ea\u60f3\u8ba9\u67d0\u4e00\u4e2a\u6570\u7801\u7ba1\u4eae，\u6211\u4eec\u5c31\u53ef\u4ee5\u9009\u62e9\u4ed6\u4eec\u5171\u6781\u90a3\u6bb5\u662f\u5426\u7ed9\u76f8\u5e94\u7684\u7535，\u6bd4\u5982\u6211\u4eec\u9009\u7684\u662f\u5171\u9634\u6781\u6570\u7801\u7ba1，\u90a3\u6211\u4eec\u53ea\u9700\u8981\u5728\u6211\u4eec\u60f3\u8981\u7684\u90a3\u4e2a\u6570\u7801\u7ba1\u5171\u6781\u63a5\u4e0a\u4f4e\u7535\u5e73\u5176\u4ed6\u6570\u7801\u7ba1\u63a5\u9ad8\u7535\u5e73\u5373\u53ef\u5b9e\u73b0\u53ea\u8ba9\u9009\u5b9a\u6570\u7801\u7ba1\u4eae\u7684\u7ed3\u679c\u3002
\n\u4e09.\u6570\u7801\u7ba1\u539f\u7406\u56fe
\n\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"
\n\u6570\u7801\u7ba1\u5de6\u8fb9\u768474HC245\u82af\u7247\u6709\u4e09\u4e2a\u4f5c\u7528：1.\u589e\u5f3a\u9a71\u52a8\u80fd\u529b（\u7535\u6d41\u653e\u5927）2.\u7f13\u51b2\u9694\u79bb 3.\u53cc\u5411\u603b\u7ebf\u6536\u53d1\u3002\u5728\u8fd9\u4e2a\u5b9e\u9a8c\u4e3b\u8981\u4f5c\u7528\u662f\u589e\u5f3a\u9a71\u52a8\u80fd\u529b，\u5355\u7247\u673a\u7684\u9a71\u52a8\u80fd\u529b\u5f31，\u7535\u6d41\u5c0f，\u5982\u679c\u76f4\u63a5\u8fde\u63a5LED，LED\u4e0d\u4f1a\u5f88\u4eae，\u4f46\u662f\u7ecf\u8fc774HC245\u540eLED\u4eae\u5ea6\u589e\u5f3a，\u662f\u56e0\u4e3a74HC245\u7528\u5916\u90e8\u7535\u6e90\u53bb\u4f9b\u7535，\u7535\u6d41\u8db3\u4ee5\u4f7fLED\u4eae\u3002<\/p>\n

74HC245\u82af\u7247\u7684DIR\u5f15\u811a\u662f\u65b9\u5411\u63a7\u5236\u5f15\u811a ：
\nDIR=1：A \u2192 B \u65b9\u5411（P0 \u53e3\u7684\u6570\u636e，\u9001\u5230 B \u4fa7，\u4e5f\u5c31\u662f\u6570\u7801\u7ba1\u6bb5\u5f15\u811a）DIR=0：B \u2192 A \u65b9\u5411（\u53cd\u8fc7\u6765，\u4ece\u6570\u7801\u7ba1\u4fa7\u8bfb\u56de\u6570\u636e\u5230 P0）
\nOE\u5f15\u811a\u662f\u8f93\u51fa\u4f7f\u80fd\u5f15\u811a，\u4f4e\u7535\u5e73\u6709\u6548
\nOE=0：\u82af\u7247\u5f00\u542f，\u603b\u7ebf\u8fde\u901a，\u53ef\u4ee5\u4f20\u8f93\u6570\u636e
\nOE=1：\u82af\u7247\u9ad8\u963b\u6001，\u4e24\u8fb9\u65ad\u5f00
\n\u5355\u7247\u673a\u4ece\u5de6\u8fb9\u8f93\u5165\u4fe1\u53f7\u7ed974HC245，\u7136\u540e\u4fe1\u53f7\u88ab\u653e\u5927\u8f93\u5165\u7ed9LED<\/p>\n

RP5\u662f\u9650\u6d41\u7535\u963b，\u4fdd\u62a4\u7535\u8def
\nJ21\u662f3\u9488\u8df3\u7ebf\u5e3d-
\n1 \u811a：VCC
\n2 \u811a：LE（74HC245 \u7684 DIR \u65b9\u5411\u63a7\u5236\u811a）
\n3 \u811a：P1_0（\u5355\u7247\u673a P10 IO \u53e3）
\n\u4f5c\u7528
\n1.\u77ed\u63a5 1 \u811a\u548c 2 \u811a\u2192 LE \u76f4\u63a5\u63a5\u5230 VCC（\u56fa\u5b9a\u9ad8\u7535\u5e73）\u2192 74HC245 \u65b9\u5411\u6c38\u4e45\u56fa\u5b9a A\u2192B，P0 \u7684\u6570\u636e\u4e00\u76f4\u8f93\u51fa\u5230\u6570\u7801\u7ba1\u6bb5，\u4e0d\u9700\u8981\u5355\u7247\u673a\u63a7\u5236\u65b9\u5411
\n2.\u77ed\u63a5 2 \u811a\u548c 3 \u811a \u2192 LE \u63a5\u5230\u5355\u7247\u673a P1.0\u2192 \u7531\u5355\u7247\u673a\u7a0b\u5e8f，\u7528 P1_0 \u8f6f\u4ef6\u63a7\u5236 DIR \u65b9\u5411，\u53ef\u5207\u6362\u4f20\u8f93\u65b9\u5411<\/p>\n

\u56db.138\u8bd1\u7801\u5668
\n\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"
\n\u4e3b\u8981\u4f5c\u7528\u662f\u53ef\u4ee5\u8ba9\u7aef\u53e3\u53d8\u5c11，\u7528\u5de6\u8fb9(P22,P23,P24)\u4e09\u4e2a\u7aef\u53e3\u63a7\u5236\u53f3\u8fb9（Y0,Y1,Y2,Y3,Y4,Y5,Y6,Y7)8\u4e2a\u7aef\u53e3\u3002\u4f8b\u5982\u5de6\u8fb9\u7aef\u53e3\u662f100，\u5219\u4f1a\u63a7\u5236\u53f3\u8fb9Y0（LED1），\u6b64\u5904\u7528\u5230\u4e8c\u8fdb\u5236
\nG1,G2A,G2B\u662f\u4f7f\u80fd\u811a\u53ea\u6709G1\u63a5VCC，G2A,G2BV\u63a5GND\u65f6\u5019\u82af\u7247\u53ef\u4ee5\u6b63\u5e38\u8bd1\u7801\u5de5\u4f5c\u3002
\n\u6574\u4f53\u8fc7\u7a0b\u5c31\u662f\u5355\u7247\u673a\u5411 74LS138 \u8f93\u5165 3 \u4f4d\u8bd1\u7801\u4fe1\u53f7，138 \u8bd1\u7801\u540e\u8f93\u51fa\u4f4e\u7535\u5e73\u9009\u901a\u4fe1\u53f7，\u9001\u5230\u6570\u7801\u7ba1\u516c\u5171\u7aef（COM \u4f4d\u9009\u7aef），\u9009\u62e9\u5f53\u524d\u9700\u8981\u70b9\u4eae\u7684\u662f\u54ea\u4e00\u4f4d\u6570\u7801\u7ba1（\u4f4d\u9009）；\u540c\u65f6\u5355\u7247\u673a P0 \u53e3\u8f93\u51fa\u6bb5\u7801，\u7ecf\u8fc7 74HC245 \u589e\u5f3a\u9a71\u52a8\u80fd\u529b\u540e\u9001\u5230\u6570\u7801\u7ba1 a~dp \u6bb5\u5f15\u811a，\u63a7\u5236\u8be5\u4f4d\u6570\u7801\u7ba1\u663e\u793a\u7684\u6570\u5b57 \/ \u5b57\u7b26（\u6bb5\u9009）\u3002\u52a8\u6001\u626b\u63cf\u65f6\u8f6e\u6d41\u9009\u901a\u6bcf\u4e00\u4f4d，\u5229\u7528\u4eba\u773c\u89c6\u89c9\u6682\u7559，\u5b9e\u73b0\u591a\u4f4d\u6570\u7801\u7ba1\u540c\u65f6\u7a33\u5b9a\u663e\u793a\u3002<\/p>\n

\u4e94.\u6570\u7ec4
\n\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"
\n\u8fd9\u91cc\u91cd\u70b9\u662fx[0]\u6307\u7684\u662f\u7b2c\u4e00\u4e2a\u5143\u7d20，x[1]\u6307\u7684\u662f\u7b2c\u4e8c\u4e2a\u5143\u7d20，x[2]\u6307\u7684\u662f\u7b2c\u4e09\u4e2a\u5143\u7d20<\/p>\n

\u516d.\u5b50\u51fd\u6570
\n\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"
\n\u4ee3\u7801\u5c55\u793a
\n\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

\u8fc7\u7a0b\u4e2d\u9047\u5230\u7684\u95ee\u9898
\n1.\u4e3a\u4ec0\u4e48\u5728seitch（Location）\u91cc\u9762case1\u540e\u9762\u7684\u4ee3\u7801\u662f000\u800c\u4e0d\u662f001？
\n\u56e0\u4e3a\u4ed6\u4fe9\u6ca1\u6709\u5fc5\u7136\u8054\u7cfb，\u4e0d\u80fd\u56e0\u4e3acase1\u5c31\u8ba9\u540e\u9762\u4f4d001，\u524d\u9762case＋\u6570\u5b57\u53ea\u662f\u56e0\u4e3aswitch\u51fd\u6570\u7684\u6392\u5e8f，\u800c\u540e\u9762\u7684\u4ee3\u7801\u662f\u4e8c\u8fdb\u5236，\u4ece000\u5230111\u4e00\u51718\u4e2a\u6570，\u5bf9\u5e948\u4e2aLED
\n2.\u4e3a\u4ec0\u4e48\u4ee3\u7801\u4e3a000\u6307\u7684\u662f\u7b2c\u4e00\u4e2aLED，\u4e3a\u4ec0\u4e48001\u4e0d\u662f\u6307\u7b2c\u4e00\u4e2aLED？
\n\u540c\u6837\u7684，\u4ed6\u4eec\u6ca1\u6709\u5fc5\u7136\u8054\u7cfb，\u53ea\u662f\u6392\u5e8f\u3002\u4ed6\u4eec\u4e4b\u95f4\u5bf9\u5e94\u5173\u7cfb\u5982\u4e0b\u56fe
\n\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

3.\u5b50\u51fd\u6570\u77e5\u8bc6\u638c\u63e1\u4e0d\u7262
\n\"\u9519\u8bef\u5199\u6cd5\"
\n\u8fd9\u662f\u9519\u8bef\u4ee3\u7801<\/p>\n

\u5b50\u51fd\u6570\u7684\u5f62\u5f0f\u662f
\n\u8fd4\u56de\u503c\u7c7b\u578b \u51fd\u6570\u540d(\u5f62\u53c2\u5217\u8868)
\n{
\n\u51fd\u6570\u5185\u90e8\u4ee3\u7801;
\nreturn \u8fd4\u56de\u503c; \/\/ \u5982\u679c\u8fd4\u56de\u503c\u662fvoid，\u8fd9\u4e00\u53e5\u53ef\u4ee5\u7701\u7565
\n}
\n\u5148\u5199\u8fd4\u56de\u503c\u7c7b\u578b，\u5373char int\u7b49\u7b49，\u518d\u5199\u5b9a\u4e49\u7684\u51fd\u6570\u540d\u5b57，\u518d\u5199\u62ec\u53f7\u91cc\u9762\u7684\u5f62\u53c2\u5217\u8868，\u5f62\u53c2\u8981\u5b9a\u4e49\u7c7b\u578b！！！
\n1）.\u6211\u5199\u4ee3\u7801\u65f6\u5019\u8fd4\u56de\u503c\u7c7b\u578b\u5199\u9519\u4e86，\u5e94\u8be5\u5199void，\u56e0\u4e3a\u6211\u4eec\u5728\u4e0b\u9762\u4f7f\u7528\u8fd9\u4e2a\u5b50\u51fd\u6570\u540e\u4e0d\u9700\u8981\u8fd4\u56de\u503c
\n2）.\u6211\u7684\u5f62\u53c2\u6ca1\u6709\u5b9a\u4e49\u7c7b\u578b
\n\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"
\n\u5e94\u8be5\u4e3a\u8fd9\u6837
\n\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

4.\u6211\u628a\u5b50\u51fd\u6570\u5199\u5165\u4e86void main，\u8fd9\u6837\u4f1a\u5d4c\u5957\u4f7f\u7528，C51 \u4e2d\u51fd\u6570\u4e0d\u80fd\u5728 main \u51fd\u6570\u5185\u90e8\u8fdb\u884c\u5d4c\u5957\u5b9a\u4e49，main \u51fd\u6570\u4e0e\u5b50\u51fd\u6570\u5c5e\u4e8e\u5e73\u7ea7\u5173\u7cfb；main \u51fd\u6570\u5185\u90e8\u53ea\u53ef\u4ee5\u5bf9\u5b50\u51fd\u6570\u8fdb\u884c\u8c03\u7528，\u4e0d\u80fd\u628a\u5b50\u51fd\u6570\u7684\u5b9a\u4e49\u5199\u8fdb main \u7684\u5927\u62ec\u53f7\u91cc\u9762\u3002
\n\u5e94\u8be5\u662f\u8fd9\u6837
\n\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

5.\u5fd8\u8bb0\u5199while\u5faa\u73af
\n\u5931\u8bef\u70b9：\u4e3b\u51fd\u6570\u5fd8\u8bb0\u6dfb\u52a0 while(1) \u6b7b\u5faa\u73af\u3002\u82e5\u4e0d\u52a0\u8be5\u5faa\u73af，main \u51fd\u6570\u6267\u884c\u5b8c\u4e00\u904d\u4ee3\u7801\u540e\u5c31\u4f1a\u9000\u51fa\u4e3b\u51fd\u6570，\u7a0b\u5e8f\u505c\u6b62\u8fd0\u884c；while(1) \u9700\u8981\u653e\u7f6e\u5728 main \u51fd\u6570\u5185\u90e8\u672b\u5c3e，\u8ba9\u7a0b\u5e8f\u6301\u7eed\u5faa\u73af\u626b\u63cf\u6570\u7801\u7ba1，\u5b9e\u73b0\u6570\u7801\u7ba1\u7a33\u5b9a\u52a8\u6001\u663e\u793a\u3002
\n\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"
\n6.\u628a138\u8bd1\u7801\u5668\u4e0eLED\u5173\u7cfb\u641e\u53cd
\n\u5931\u8bef\u70b9：\u6df7\u6dc6 74HC138 \u8bd1\u7801\u5668\u8f93\u51fa\u4e0e\u6570\u7801\u7ba1\u4f4d\u5e8f\u5bf9\u5e94\u5173\u7cfb\u3002\u5f00\u53d1\u677f\u6570\u7801\u7ba1\u7f16\u53f7\u662f\u4ece\u53f3\u5f80\u5de6\u4f9d\u6b21\u4e3a LED1~LED8，\u4e4b\u524d\u8bef\u6309\u4ece\u5de6\u5230\u53f3\u7406\u89e3，\u5bfc\u81f4 switch \u4f4d\u9009\u7f16\u7801\u5199\u53cd，\u6700\u7ec8\u663e\u793a\u7684\u6570\u5b57\u51fa\u73b0\u5728\u9519\u8bef\u7684\u6570\u7801\u7ba1\u4f4d\u7f6e，\u4fee\u6b63 case \u8bd1\u7801\u7f16\u7801\u987a\u5e8f\u540e\u663e\u793a\u4f4d\u7f6e\u6062\u590d\u6b63\u5e38\u3002
\n138\u8f93\u5165P22,P23,P24 \u8bd1\u7801\u8f93\u51fa \u5bf9\u5e94\u7684\u6570\u7801\u7ba1 \u4f4d\u7f6e
\n000 Y0 LED8 \u6700\u5de6\u4fa7
\n001 Y1 LED7 \u5de6\u6570\u7b2c\u4e8c\u4f4d
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