{"id":78044,"date":"2026-02-26T01:40:58","date_gmt":"2026-02-25T17:40:58","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/78044.html"},"modified":"2026-02-26T01:40:58","modified_gmt":"2026-02-25T17:40:58","slug":"%e5%9f%ba%e4%ba%8estc89c52%e5%8d%95%e7%89%87%e6%9c%ba%e7%9a%84%e6%99%ba%e8%83%bd%e5%85%ab%e8%b7%af%e6%8a%a2%e7%ad%94%e5%99%a8%e7%b3%bb%e7%bb%9f%e8%ae%be%e8%ae%a1%e4%b8%8e%e5%ae%9e%e7%8e%b0","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/78044.html","title":{"rendered":"\u57fa\u4e8eSTC89C52\u5355\u7247\u673a\u7684\u667a\u80fd\u516b\u8def\u62a2\u7b54\u5668\u7cfb\u7edf\u8bbe\u8ba1\u4e0e\u5b9e\u73b0"},"content":{"rendered":"

1. \u7cfb\u7edf\u6574\u4f53\u8bbe\u8ba1\u601d\u8def<\/h3>\n

\u6211\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\u591a\u6b21\u4f7f\u7528STC89C52\u5355\u7247\u673a\u8bbe\u8ba1\u62a2\u7b54\u5668\u7cfb\u7edf，\u53d1\u73b0\u8fd9\u79cd\u65b9\u6848\u7279\u522b\u9002\u5408\u8bfe\u5802\u4e92\u52a8\u548c\u7ade\u8d5b\u573a\u666f\u3002\u6574\u4e2a\u7cfb\u7edf\u7684\u6838\u5fc3\u601d\u8def\u5f88\u7b80\u5355：\u7528\u5355\u7247\u673a\u4f5c\u4e3a\u5927\u8111，8\u4e2a\u62a2\u7b54\u6309\u94ae\u4f5c\u4e3a\u8f93\u5165，\u6570\u7801\u7ba1\u663e\u793a\u62a2\u7b54\u7ed3\u679c，\u8702\u9e23\u5668\u63d0\u4f9b\u58f0\u97f3\u53cd\u9988，\u518d\u52a0\u4e0a\u4e3b\u6301\u4eba\u63a7\u5236\u6309\u94ae\u6765\u7ba1\u7406\u6574\u4e2a\u6d41\u7a0b\u3002<\/p>\n

\u4e3b\u88ab\u52a8\u63a7\u5236\u65b9\u6848\u662f\u6211\u7279\u522b\u63a8\u8350\u7684\u8bbe\u8ba1\u65b9\u5f0f\u3002\u4e3b\u52a8\u63a7\u5236\u6307\u7684\u662f\u4e3b\u6301\u4eba\u901a\u8fc7\u5f00\u59cb\/\u505c\u6b62\u6309\u94ae\u6765\u63a7\u5236\u62a2\u7b54\u65f6\u673a，\u88ab\u52a8\u63a7\u5236\u5219\u662f\u9009\u624b\u53ea\u80fd\u5728\u89c4\u5b9a\u65f6\u95f4\u5185\u54cd\u5e94\u3002\u8fd9\u79cd\u8bbe\u8ba1\u6700\u5927\u7684\u597d\u5904\u662f\u907f\u514d\u4e86\u4fe1\u53f7\u51b2\u7a81，\u5c31\u50cf\u4ea4\u901a\u4fe1\u53f7\u706f\u63a7\u5236\u8f66\u8f86\u901a\u884c\u4e00\u6837\u6709\u5e8f\u3002\u5728\u5b9e\u9645\u6d4b\u8bd5\u4e2d，\u8fd9\u79cd\u65b9\u6848\u786e\u5b9e\u6bd4\u5b8c\u5168\u81ea\u7531\u62a2\u7b54\u7a33\u5b9a\u5f97\u591a，\u4e0d\u4f1a\u51fa\u73b0\u591a\u4e2a\u9009\u624b\u540c\u65f6\u6309\u4e0b\u6309\u94ae\u65f6\u7684\u8bc6\u522b\u9519\u8bef\u3002<\/p>\n

\u4fe1\u53f7\u5904\u7406\u65b9\u9762，\u6211\u91c7\u7528\u4e86\u8f6f\u4ef6\u53bb\u6296\u52a8+\u786c\u4ef6\u6ee4\u6ce2\u7684\u53cc\u91cd\u4fdd\u969c\u3002\u6bcf\u4e2a\u62a2\u7b54\u6309\u94ae\u90fd\u5e76\u8054\u4e860.1\u03bcF\u7684\u7535\u5bb9\u6765\u8fc7\u6ee4\u673a\u68b0\u6296\u52a8\u4ea7\u751f\u7684\u5e72\u6270\u4fe1\u53f7，\u540c\u65f6\u5728\u7a0b\u5e8f\u4e2d\u4e5f\u52a0\u5165\u4e8620ms\u7684\u5ef6\u65f6\u5224\u65ad，\u786e\u4fdd\u6bcf\u6b21\u6309\u952e\u90fd\u88ab\u51c6\u786e\u8bc6\u522b\u3002\u8fd9\u79cd\u8bbe\u8ba1\u5728\u591a\u6b21\u5b9e\u9645\u4f7f\u7528\u4e2d\u90fd\u8868\u73b0\u7a33\u5b9a，\u5373\u4f7f\u662f\u5728\u7535\u78c1\u73af\u5883\u590d\u6742\u7684\u6559\u5ba4\u4e2d\u4e5f\u5f88\u5c11\u51fa\u73b0\u8bef\u89e6\u53d1\u3002<\/p>\n

2. \u786c\u4ef6\u7535\u8def\u8bbe\u8ba1\u8be6\u89e3<\/h3>\n

2.1 \u6838\u5fc3\u63a7\u5236\u6a21\u5757<\/h4>\n

STC89C52\u5355\u7247\u673a\u662f\u8fd9\u4e2a\u7cfb\u7edf\u7684\u5fc3\u810f，\u6211\u9009\u62e9\u5b83\u4e3b\u8981\u662f\u56e0\u4e3a\u5176\u5185\u7f6e\u76848KB Flash\u5b58\u50a8\u7a7a\u95f4\u8db3\u591f\u5b58\u653e\u6574\u4e2a\u7a0b\u5e8f\u4ee3\u7801，\u800c\u4e14512\u5b57\u8282\u7684RAM\u5b8c\u5168\u80fd\u6ee1\u8db3\u6570\u636e\u7f13\u5b58\u9700\u6c42\u3002\u5728\u5b9e\u9645\u63a5\u7ebf\u65f6，\u6211\u5efa\u8bae\u5c06P0\u53e3\u7528\u4e8e\u9a71\u52a8\u6570\u7801\u7ba1\u6bb5\u9009，P2\u53e3\u7528\u4e8e\u4f4d\u9009，P1\u53e3\u63a58\u4e2a\u62a2\u7b54\u6309\u94ae，P3.0\u548cP3.1\u63a5\u4e3b\u6301\u4eba\u7684\u5f00\u59cb\u548c\u590d\u4f4d\u6309\u94ae\u3002<\/p>\n

\u7535\u6e90\u90e8\u5206\u9700\u8981\u7279\u522b\u6ce8\u610f：\u867d\u7136STC89C52\u7684\u5de5\u4f5c\u7535\u538b\u8303\u56f4\u662f4.5V\u52305.5V，\u4f46\u6211\u5b9e\u6d4b\u53d1\u73b0\u7a33\u5b9a\u76845V\u4f9b\u7535\u5bf9\u7cfb\u7edf\u7a33\u5b9a\u6027\u81f3\u5173\u91cd\u8981\u3002\u6211\u63a8\u8350\u4f7f\u7528AMS1117-5.0\u7a33\u538b\u82af\u7247，\u914d\u5408100\u03bcF\u7684\u7535\u89e3\u7535\u5bb9\u548c0.1\u03bcF\u7684\u74f7\u7247\u7535\u5bb9\u8fdb\u884c\u6ee4\u6ce2，\u8fd9\u6837\u7684\u7535\u6e90\u8bbe\u8ba1\u5728\u957f\u65f6\u95f4\u8fd0\u884c\u4e2d\u51e0\u4e4e\u4e0d\u4f1a\u51fa\u73b0\u7535\u538b\u6ce2\u52a8\u3002<\/p>\n

2.2 \u663e\u793a\u4e0e\u63d0\u793a\u6a21\u5757<\/h4>\n

\u6570\u7801\u7ba1\u663e\u793a\u6211\u91c7\u7528\u4e86\u52a8\u6001\u626b\u63cf\u65b9\u5f0f，\u8fd9\u6837\u53ea\u9700\u89818\u4e2aIO\u53e3\u5c31\u80fd\u9a71\u52a84\u4f4d\u6570\u7801\u7ba1\u3002\u4e3a\u4e86\u589e\u5f3a\u9a71\u52a8\u80fd\u529b，\u6211\u5728P0\u53e3\u52a0\u4e8610k\u7684\u4e0a\u62c9\u7535\u963b，\u540c\u65f6\u4f7f\u752874HC245\u4f5c\u4e3a\u4f4d\u9009\u9a71\u52a8\u82af\u7247\u3002\u5b9e\u9645\u6d4b\u8bd5\u4e2d，\u8fd9\u79cd\u8bbe\u8ba1\u5373\u4f7f\u5728\u5927\u6559\u5ba4\u540e\u6392\u4e5f\u80fd\u6e05\u6670\u770b\u5230\u663e\u793a\u7684\u6570\u5b57\u3002<\/p>\n

\u58f0\u97f3\u63d0\u793a\u90e8\u5206\u7279\u522b\u6709\u610f\u601d：\u6211\u7528\u4e86\u4e24\u4e2a\u4e0d\u540c\u9891\u7387\u7684\u63d0\u793a\u97f3\u3002\u5f53\u4e3b\u6301\u4eba\u6309\u4e0b\u5f00\u59cb\u65f6，\u8702\u9e23\u5668\u53d1\u51fa1kHz\u7684"\u5600"\u58f0；\u5f53\u6709\u9009\u624b\u62a2\u7b54\u6210\u529f\u65f6，\u53d1\u51fa500Hz\u7684"\u53ee"\u58f0\u5e76\u6301\u7eed1\u79d2\u3002\u8fd9\u79cd\u5dee\u5f02\u5316\u7684\u58f0\u97f3\u53cd\u9988\u5728\u5b9e\u9645\u4f7f\u7528\u4e2d\u975e\u5e38\u5b9e\u7528，\u53c2\u4e0e\u8005\u4e0d\u7528\u770b\u663e\u793a\u5c31\u77e5\u9053\u5f53\u524d\u72b6\u6001\u3002<\/p>\n

3. \u8f6f\u4ef6\u7a0b\u5e8f\u8bbe\u8ba1\u5b9e\u6218<\/h3>\n

3.1 \u4e3b\u7a0b\u5e8f\u6846\u67b6\u8bbe\u8ba1<\/h4>\n

\u4e3b\u7a0b\u5e8f\u91c7\u7528\u72b6\u6001\u673a\u7684\u65b9\u5f0f\u8bbe\u8ba1，\u8fd9\u6837\u903b\u8f91\u6e05\u6670\u4e14\u6613\u4e8e\u7ef4\u62a4\u3002\u6211\u901a\u5e38\u5b9a\u4e49\u4e09\u4e2a\u4e3b\u8981\u72b6\u6001：\u7b49\u5f85\u72b6\u6001\u3001\u62a2\u7b54\u72b6\u6001\u548c\u663e\u793a\u72b6\u6001\u3002\u5728\u7b49\u5f85\u72b6\u6001\u4e0b，\u7cfb\u7edf\u4e0d\u65ad\u626b\u63cf\u4e3b\u6301\u4eba\u662f\u5426\u6309\u4e0b\u5f00\u59cb\u952e；\u4e00\u65e6\u5f00\u59cb，\u7acb\u5373\u8fdb\u516560\u79d2\u5012\u8ba1\u65f6\u5e76\u5f00\u542f\u62a2\u7b54\u529f\u80fd\u3002<\/p>\n

void main()
\n{
\n system_init(); \/\/ \u7cfb\u7edf\u521d\u59cb\u5316
\n while(1)
\n {
\n switch(current_state)
\n {
\n case WAIT_STATE:
\n check_start_button(); \/\/ \u68c0\u6d4b\u5f00\u59cb\u6309\u94ae
\n break;
\n case COUNTDOWN_STATE:
\n countdown_60s(); \/\/ 60\u79d2\u5012\u8ba1\u65f6
\n check_contestants(); \/\/ \u68c0\u6d4b\u9009\u624b\u62a2\u7b54
\n break;
\n case DISPLAY_STATE:
\n show_result(); \/\/ \u663e\u793a\u62a2\u7b54\u7ed3\u679c
\n break;
\n }
\n }
\n}<\/p>\n

\u8fd9\u6bb5\u4ee3\u7801\u6846\u67b6\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\u7ecf\u8fc7\u591a\u6b21\u4f18\u5316，\u8fd0\u884c\u7a33\u5b9a\u53ef\u9760\u3002\u5173\u952e\u662f\u8981\u5728\u6bcf\u4e2a\u72b6\u6001\u4e2d\u5904\u7406\u597d\u72b6\u6001\u8f6c\u6362\u7684\u6761\u4ef6，\u6bd4\u5982\u4ece\u5012\u8ba1\u65f6\u72b6\u6001\u5207\u6362\u5230\u663e\u793a\u72b6\u6001\u7684\u65f6\u673a\u662f\u6709\u4eba\u62a2\u7b54\u6210\u529f\u6216\u8005\u5012\u8ba1\u65f6\u7ed3\u675f\u3002<\/p>\n

3.2 \u6309\u952e\u68c0\u6d4b\u4e0e\u53bb\u6296\u52a8\u5904\u7406<\/h4>\n

\u6309\u952e\u5904\u7406\u662f\u62a2\u7b54\u5668\u7684\u6838\u5fc3\u529f\u80fd，\u6211\u91c7\u7528\u4e86\u5206\u5c42\u68c0\u6d4b\u7684\u65b9\u6cd5\u3002\u9996\u5148\u5728\u786c\u4ef6\u4e0a\u6bcf\u4e2a\u6309\u952e\u90fd\u5e76\u8054\u4e86\u6ee4\u6ce2\u7535\u5bb9，\u7136\u540e\u5728\u8f6f\u4ef6\u4e2d\u5b9e\u73b0\u4e86\u4e8c\u6b21\u68c0\u6d4b：\u7b2c\u4e00\u6b21\u68c0\u6d4b\u5230\u6309\u952e\u6309\u4e0b\u540e\u5ef6\u65f620ms\u518d\u6b21\u68c0\u6d4b，\u5982\u679c\u4ecd\u7136\u4e3a\u6309\u4e0b\u72b6\u6001\u624d\u786e\u8ba4\u4e3a\u6709\u6548\u6309\u952e\u3002<\/p>\n

\u5bf9\u4e8e\u62a2\u7b54\u4f18\u5148\u7ea7\u7684\u5224\u65ad，\u6211\u4f7f\u7528\u4e86\u4e2d\u65ad\u65b9\u5f0f\u3002\u5f53\u4efb\u4f55\u4e00\u4e2a\u62a2\u7b54\u6309\u94ae\u88ab\u6309\u4e0b\u65f6，\u4f1a\u4ea7\u751f\u5916\u90e8\u4e2d\u65ad，\u5728\u4e2d\u65ad\u670d\u52a1\u7a0b\u5e8f\u4e2d\u7acb\u5373\u9501\u5b58\u5f53\u524d\u62a2\u7b54\u8005\u7684\u7f16\u53f7\u5e76\u7981\u6b62\u5176\u4ed6\u62a2\u7b54\u3002\u8fd9\u79cd\u8bbe\u8ba1\u786e\u4fdd\u4e86\u62a2\u7b54\u7684\u516c\u5e73\u6027，\u6700\u5148\u6309\u4e0b\u6309\u94ae\u7684\u9009\u624b\u4e00\u5b9a\u80fd\u88ab\u8bc6\u522b\u5230\u3002<\/p>\n

void external0_int() interrupt 0
\n{
\n EX0 = 0; \/\/ \u5173\u95ed\u5916\u90e8\u4e2d\u65ad
\n delay_ms(5); \/\/ \u77ed\u6682\u5ef6\u65f6\u53bb\u6296\u52a8<\/p>\n

\/\/ \u5224\u65ad\u5177\u4f53\u662f\u54ea\u4e2a\u6309\u952e\u88ab\u6309\u4e0b
\n if(KEY1 == 0) winner_number = 1;
\n else if(KEY2 == 0) winner_number = 2;
\n \/\/ … \u5176\u4ed6\u6309\u952e\u5224\u65ad<\/p>\n

display_winner(winner_number); \/\/ \u663e\u793a\u83b7\u80dc\u8005\u7f16\u53f7
\n play_success_sound(); \/\/ \u64ad\u653e\u6210\u529f\u63d0\u793a\u97f3
\n current_state = DISPLAY_STATE; \/\/ \u8fdb\u5165\u663e\u793a\u72b6\u6001
\n}<\/p>\n

4. \u6297\u5e72\u6270\u8bbe\u8ba1\u4e0e\u7a33\u5b9a\u6027\u4f18\u5316<\/h3>\n

\u5728\u5b9e\u9645\u4f7f\u7528\u4e2d，\u7535\u78c1\u5e72\u6270\u662f\u4e2a\u5927\u95ee\u9898\u3002\u6211\u9047\u5230\u8fc7\u56e0\u4e3a\u624b\u673a\u4fe1\u53f7\u5e72\u6270\u5bfc\u81f4\u8bef\u89e6\u53d1\u7684\u60c5\u51b5，\u540e\u6765\u901a\u8fc7\u4ee5\u4e0b\u51e0\u4e2a\u63aa\u65bd\u5f7b\u5e95\u89e3\u51b3\u4e86\u8fd9\u4e2a\u95ee\u9898：<\/p>\n

\u7535\u6e90\u9694\u79bb\u65b9\u9762，\u6211\u5728\u5355\u7247\u673a\u7535\u6e90\u5165\u53e3\u5904\u589e\u52a0\u4e86\u78c1\u73e0\u548c\u591a\u4e2a\u53bb\u8026\u7535\u5bb9\u3002\u78c1\u73e0\u80fd\u6291\u5236\u9ad8\u9891\u5e72\u6270，10\u03bcF\u7684\u94bd\u7535\u5bb9\u8d1f\u8d23\u4f4e\u9891\u6ee4\u6ce2，0.1\u03bcF\u7684\u74f7\u7247\u7535\u5bb9\u8d1f\u8d23\u9ad8\u9891\u6ee4\u6ce2\u3002\u8fd9\u6837\u7684\u7ec4\u5408\u8ba9\u7535\u6e90\u8d28\u91cf\u5927\u5e45\u63d0\u5347\u3002<\/p>\n

\u4fe1\u53f7\u5c4f\u853d\u4e5f\u5f88\u91cd\u8981\u3002\u6240\u6709\u4fe1\u53f7\u7ebf\u90fd\u91c7\u7528\u5c4f\u853d\u7ebf\u7f06，\u7279\u522b\u662f\u62a2\u7b54\u6309\u94ae\u7684\u5f15\u7ebf\u5982\u679c\u8f83\u957f，\u4e00\u5b9a\u8981\u4f7f\u7528\u53cc\u7ede\u7ebf\u5e76\u505a\u597d\u5c4f\u853d\u63a5\u5730\u3002\u6211\u5728\u4e00\u6b21\u6821\u56ed\u7ade\u8d5b\u4e2d\u5c31\u56e0\u4e3a\u5ffd\u7565\u4e86\u8fd9\u70b9，\u5bfc\u81f4\u8ddd\u79bb\u6700\u8fdc\u76848\u53f7\u4f4d\u7ecf\u5e38\u8bef\u89e6\u53d1\u3002<\/p>\n

\u8f6f\u4ef6\u5c42\u9762\u7684\u6297\u5e72\u6270\u6211\u91c7\u7528\u4e86\u770b\u95e8\u72d7\u5b9a\u65f6\u5668\u548c\u6307\u4ee4\u5197\u4f59\u3002STC89C52\u5185\u7f6e\u7684\u770b\u95e8\u72d7\u53ef\u4ee5\u5728\u7a0b\u5e8f\u8dd1\u98de\u65f6\u81ea\u52a8\u590d\u4f4d，\u6211\u5728\u5173\u952e\u4ee3\u7801\u6bb5\u52a0\u5165\u4e86NOP\u6307\u4ee4\u5197\u4f59，\u8fd9\u6837\u5373\u4f7f\u53d7\u5230\u5e72\u6270\u4e5f\u80fd\u4fdd\u8bc1\u7a0b\u5e8f\u6b63\u5e38\u6267\u884c\u3002<\/p>\n

5. \u5b9e\u9645\u5e94\u7528\u4e0e\u8c03\u8bd5\u6280\u5de7<\/h3>\n

\u6839\u636e\u6211\u7684\u9879\u76ee\u7ecf\u9a8c，\u62a2\u7b54\u5668\u7684\u5b89\u88c5\u4f4d\u7f6e\u5f88\u6709\u8bb2\u7a76\u3002\u6700\u597d\u5c06\u4e3b\u673a\u653e\u5728\u6559\u5ba4\u4e2d\u592e，\u8fd9\u6837\u5230\u6bcf\u4e2a\u5ea7\u4f4d\u7684\u8ddd\u79bb\u90fd\u5dee\u4e0d\u591a，\u4fe1\u53f7\u5f3a\u5ea6\u5747\u5300\u3002\u6211\u66fe\u7ecf\u9047\u5230\u8fc7\u56e0\u4e3a\u4e3b\u673a\u4f4d\u7f6e\u504f\u9887，\u5bfc\u81f4\u9760\u8fd1\u4e3b\u673a\u7684\u9009\u624b\u603b\u662f\u6bd4\u8fdc\u5904\u7684\u9009\u624b\u53cd\u5e94\u5feb\u7684\u5c34\u5c2c\u60c5\u51b5\u3002<\/p>\n

\u8c03\u8bd5\u65f6\u6211\u603b\u7ed3\u4e86\u4e00\u4e2a\u5f88\u5b9e\u7528\u7684\u65b9\u6cd5：\u5206\u6a21\u5757\u6d4b\u8bd5\u3002\u5148\u6d4b\u8bd5\u7535\u6e90\u6a21\u5757，\u786e\u4fdd5V\u7535\u538b\u7a33\u5b9a；\u518d\u6d4b\u8bd5\u663e\u793a\u6a21\u5757，\u786e\u8ba4\u6240\u6709\u6570\u7801\u7ba1\u6bb5\u90fd\u80fd\u6b63\u5e38\u663e\u793a；\u7136\u540e\u6d4b\u8bd5\u6309\u952e\u6a21\u5757，\u9010\u4e2a\u68c0\u67e5\u6bcf\u4e2a\u62a2\u7b54\u6309\u94ae\u7684\u54cd\u5e94；\u6700\u540e\u6d4b\u8bd5\u6574\u4f53\u529f\u80fd，\u6a21\u62df\u5b9e\u9645\u62a2\u7b54\u573a\u666f\u3002<\/p>\n

\u5bf9\u4e8e\u5012\u8ba1\u65f6\u7cbe\u5ea6，\u6211\u4f7f\u7528\u4e86\u5b9a\u65f6\u56680\u768416\u4f4d\u81ea\u52a8\u91cd\u88c5\u6a21\u5f0f，\u8bbe\u7f6e50ms\u4e2d\u65ad\u4e00\u6b21，\u4e2d\u65ad20\u6b21\u5c31\u662f1\u79d2\u3002\u8fd9\u79cd\u65b9\u5f0f\u7684\u8bef\u5dee\u975e\u5e38\u5c0f，\u5b9e\u6d4b24\u5c0f\u65f6\u6f02\u79fb\u4e0d\u8d85\u8fc72\u79d2，\u5b8c\u5168\u6ee1\u8db3\u62a2\u7b54\u5668\u7684\u7cbe\u5ea6\u8981\u6c42\u3002<\/p>\n

void timer0_init()
\n{
\n TMOD |= 0x01; \/\/ \u8bbe\u7f6e\u5b9a\u65f6\u56680\u4e3a\u6a21\u5f0f1
\n TH0 = 0x4C; \/\/ 50ms\u5b9a\u65f6\u521d\u503c
\n TL0 = 0x00;
\n ET0 = 1; \/\/ \u5f00\u542f\u5b9a\u65f6\u56680\u4e2d\u65ad
\n TR0 = 1; \/\/ \u542f\u52a8\u5b9a\u65f6\u56680
\n}<\/p>\n

void timer0_int() interrupt 1
\n{
\n static unsigned int count = 0;
\n TH0 = 0x4C; \/\/ \u91cd\u65b0\u8d4b\u503c
\n TL0 = 0x00;
\n count++;<\/p>\n

if(count >= 20) \/\/ 1\u79d2\u5230\u8fbe
\n {
\n count = 0;
\n seconds–; \/\/ \u5012\u8ba1\u65f6\u51cf1
\n }
\n}<\/p>\n

6. \u5e38\u89c1\u95ee\u9898\u4e0e\u89e3\u51b3\u65b9\u6848<\/h3>\n

\u5728\u591a\u6b21\u9879\u76ee\u5b9e\u65bd\u4e2d，\u6211\u9047\u5230\u6700\u591a\u7684\u95ee\u9898\u662f\u62a2\u7b54\u8bef\u89e6\u53d1\u3002\u540e\u6765\u53d1\u73b0\u4e3b\u8981\u662f\u673a\u68b0\u6309\u952e\u6296\u52a8\u5f15\u8d77\u7684，\u89e3\u51b3\u65b9\u6cd5\u662f\u5728\u786c\u4ef6\u4e0a\u52a0\u7535\u5bb9\u6ee4\u6ce2\u7684\u540c\u65f6，\u5728\u8f6f\u4ef6\u4e2d\u589e\u52a0\u53bb\u6296\u52a8\u7b97\u6cd5\u3002\u6211\u73b0\u5728\u7528\u7684\u53bb\u6296\u52a8\u4ee3\u7801\u662f\u8fd9\u6837\u7684：<\/p>\n

uint8_t key_debounce(uint8_t key_port)
\n{
\n static uint8_t key_state[8] = {0};
\n static uint8_t key_time[8] = {0};<\/p>\n

if(key_port == 0) \/\/ \u6309\u952e\u6309\u4e0b
\n {
\n key_time[key_num]++;
\n if(key_time[key_num] > 3) \/\/ \u8fde\u7eed\u68c0\u6d4b\u52304\u6b21
\n {
\n key_time[key_num] = 0;
\n return 1; \/\/ \u786e\u8ba4\u4e3a\u6709\u6548\u6309\u952e
\n }
\n }
\n else
\n {
\n key_time[key_num] = 0;
\n }
\n return 0;
\n}<\/p>\n

\u53e6\u4e00\u4e2a\u5e38\u89c1\u95ee\u9898\u662f\u663e\u793a\u95ea\u70c1\u3002\u8fd9\u901a\u5e38\u662f\u56e0\u4e3a\u52a8\u6001\u626b\u63cf\u9891\u7387\u4e0d\u591f\u9ad8，\u6211\u4e00\u822c\u5c06\u626b\u63cf\u9891\u7387\u8bbe\u7f6e\u5728100Hz\u4ee5\u4e0a，\u8fd9\u6837\u4eba\u773c\u5c31\u770b\u4e0d\u5230\u95ea\u70c1\u4e86\u3002\u540c\u65f6\u8981\u6ce8\u610f\u6570\u7801\u7ba1\u7684\u4eae\u5ea6\u4e0d\u80fd\u592a\u9ad8，\u5426\u5219\u5728\u8f83\u6697\u7684\u73af\u5883\u4e0b\u4f1a\u663e\u5f97\u523a\u773c\u3002<\/p>\n

\u7535\u6e90\u7a33\u5b9a\u6027\u95ee\u9898\u4e5f\u503c\u5f97\u5173\u6ce8\u3002\u6709\u4e00\u6b21\u5728\u73b0\u573a\u4f7f\u7528\u65f6，\u56e0\u4e3a\u7535\u6e90\u9002\u914d\u5668\u8d28\u91cf\u4e0d\u597d，\u5bfc\u81f4\u7cfb\u7edf\u9891\u7e41\u91cd\u542f\u3002\u540e\u6765\u6211\u6539\u7528\u7b14\u8bb0\u672c\u7535\u8111\u7684USB\u53e3\u4f9b\u7535，\u95ee\u9898\u5c31\u89e3\u51b3\u4e86\u3002\u6240\u4ee5\u5982\u679c\u6761\u4ef6\u5141\u8bb8，\u5c3d\u91cf\u4f7f\u7528\u9ad8\u8d28\u91cf\u7684\u7535\u6e90\u9002\u914d\u5668\u6216\u8005\u5728\u7535\u6e90\u5165\u53e3\u5904\u589e\u52a0\u7a33\u538b\u6a21\u5757\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

1. \u7cfb\u7edf\u6574\u4f53\u8bbe\u8ba1\u601d\u8def
\n\u6211\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\u591a\u6b21\u4f7f\u7528STC89C52\u5355\u7247\u673a\u8bbe\u8ba1\u62a2\u7b54\u5668\u7cfb\u7edf，\u53d1\u73b0\u8fd9\u79cd\u65b9\u6848\u7279\u522b\u9002\u5408\u8bfe\u5802\u4e92\u52a8\u548c\u7ade\u8d5b\u573a\u666f\u3002\u6574\u4e2a\u7cfb\u7edf\u7684\u6838\u5fc3\u601d\u8def\u5f88\u7b80\u5355：\u7528\u5355\u7247\u673a\u4f5c\u4e3a\u5927\u8111，8\u4e2a\u62a2\u7b54\u6309\u94ae\u4f5c\u4e3a\u8f93\u5165，\u6570\u7801\u7ba1\u663e\u793a\u62a2\u7b54\u7ed3\u679c，\u8702\u9e23\u5668\u63d0\u4f9b\u58f0\u97f3\u53cd\u9988，\u518d\u52a0\u4e0a\u4e3b\u6301\u4eba\u63a7\u5236\u6309\u94ae\u6765\u7ba1\u7406\u6574\u4e2a\u6d41\u7a0b\u3002
\n\u4e3b\u88ab\u52a8\u63a7\u5236\u65b9\u6848\u662f\u6211\u7279\u522b\u63a8\u8350\u7684\u8bbe\u8ba1\u65b9\u5f0f\u3002\u4e3b\u52a8\u63a7\u5236\u6307\u7684\u662f\u4e3b\u6301\u4eba\u901a\u8fc7\u5f00\u59cb\/\u505c\u6b62\u6309\u94ae\u6765\u63a7\u5236\u62a2\u7b54\u65f6\u673a，\u88ab\u52a8\u63a7\u5236\u5219\u662f\u9009\u624b\u53ea\u80fd\u5728<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[8184,8584,8585,7708],"topic":[],"class_list":["post-78044","post","type-post","status-publish","format-standard","hentry","category-server","tag-stc89c52","tag-8584","tag-8585","tag-7708"],"yoast_head":"\n\u57fa\u4e8eSTC89C52\u5355\u7247\u673a\u7684\u667a\u80fd\u516b\u8def\u62a2\u7b54\u5668\u7cfb\u7edf\u8bbe\u8ba1\u4e0e\u5b9e\u73b0 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/78044.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u57fa\u4e8eSTC89C52\u5355\u7247\u673a\u7684\u667a\u80fd\u516b\u8def\u62a2\u7b54\u5668\u7cfb\u7edf\u8bbe\u8ba1\u4e0e\u5b9e\u73b0 - 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