{"id":1609,"date":"2023-07-12T14:52:19","date_gmt":"2023-07-12T06:52:19","guid":{"rendered":"https:\/\/www.huangrongzhen.ink\/?p=1609"},"modified":"2023-07-12T19:25:46","modified_gmt":"2023-07-12T11:25:46","slug":"%e5%8d%95%e7%89%87%e6%9c%ba%e5%bc%80%e5%8f%91%e7%ac%94%e8%ae%b0%e7%b3%bb%e5%88%97%ef%bc%88%e4%b8%89%ef%bc%89-%e6%8c%89%e9%94%ae%e6%89%ab%e6%8f%8f","status":"publish","type":"post","link":"https:\/\/www.huangrongzhen.ink\/?p=1609","title":{"rendered":"\u5355\u7247\u673a\u5f00\u53d1\u7b14\u8bb0\u7cfb\u5217-\u6309\u952e\u626b\u63cf"},"content":{"rendered":"<div class=\"wp-block-post-excerpt\"><p class=\"wp-block-post-excerpt__excerpt\">\u5206\u6790\u5355\u7247\u673a\u4e2d\u7684\u6309\u952e\u626b\u63cf <\/p><\/div>\n\n\n<p>\u5355\u7247\u673a\u4e2d\u6309\u952e\u68c0\u6d4b\u6709\u591a\u79cd\u65b9\u5f0f\uff0c\u53ef\u4ee5\u662f\u7a0b\u5e8f\u5b9a\u65f6\u53bb\u626b\u63cf\u6309\u952e\u7684\u7535\u5e73\u72b6\u6001\uff0c\u4e5f\u53ef\u4ee5\u5f00\u542f\u5916\u90e8\u4e2d\u65ad\uff0c\u7528\u5916\u90e8\u4e2d\u65ad\u53bb\u505a\u6309\u952e\u54cd\u5e94\u3002\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\uff0c\u4e0d\u63a8\u8350\u4f7f\u7528\u5916\u90e8\u4e2d\u65ad\u505a\u6309\u952e\u68c0\u6d4b\u3002\u56e0\u4e3a\u673a\u68b0\u6309\u952e\u4e0d\u53ef\u907f\u514d\u5730\u4f1a\u6709\u6296\u52a8\u95ee\u9898\uff0c\u5f88\u5bb9\u6613\u9020\u6210\u4e00\u6b21\u6309\u4e0b\u591a\u6b21\u54cd\u5e94\u3002\u5982\u679c\u7528\u5916\u90e8\u4e2d\u65ad\u7684\u8bdd\uff0c\u9700\u8981\u5b9e\u65f6\u8bb0\u5f55\u6309\u952e\u54cd\u5e94\u7684\u65f6\u95f4\uff0c\u6839\u636e\u5f53\u524d\u65f6\u95f4\u4e0e\u4e0a\u4e00\u6b21\u54cd\u5e94\u7684\u65f6\u95f4\u4e4b\u5dee\u505a\u4e3a\u662f\u5426\u9700\u8981\u54cd\u5e94\u7684\u4f9d\u636e\u3002\u5426\u5219\u53ea\u80fd\u662f\u5728\u4e2d\u65ad\u91cc\u505a\u5ef6\u65f6\uff0c\u8fd9\u53c8\u5f88\u5bb9\u6613\u9020\u6210\u7cfb\u7edf\u5d29\u6e83\u3002<\/p>\n\n\n\n<p>\u5728\u672c\u6587\u4e2d\uff0c\u9ed8\u8ba4\u6309\u952e\u6309\u4e0b\u65f6\u4e3a<strong>\u4f4e\u7535\u5e73<\/strong>\u3002\u5916\u90e8\u4e2d\u65ad\u505a\u6309\u952e\u54cd\u5e94\u7684\u4e2d\u65ad\u670d\u52a1\u51fd\u6570\u5982\u4e0b\u6240\u793a\u3002\u4e00\u822c\u7684\uff0c\u6309\u952e\u6296\u52a8\u5728 100ms \u4ee5\u5185\uff0c\u6240\u4ee5\u5916\u90e8\u4e2d\u65ad\u53d1\u751f\u65f6\uff0c\u5982\u679c\u5f53\u524d\u65f6\u95f4\u4e0e\u4e0a\u4e00\u6b21\u54cd\u5e94\u65f6\u95f4\u4e4b\u5dee\u5927\u4e8e 100ms\uff0c\u5219\u8bf4\u660e\u662f\u4e00\u4e2a\u65b0\u7684\u6309\u952e\u4e8b\u4ef6\u3002\u7cfb\u7edf\u65f6\u95f4\u53ef\u4ee5\u7531\u4e00\u4e2a\u5b9a\u65f6\u5668\u6765\u8bb0\u5f55\uff0c\u8bbe\u7f6e\u4e00\u4e2a\u8ba1\u6570\u5668\uff0c\u7531\u5b9a\u65f6\u5668\u4ece\u96f6\u5f00\u59cb\u6bcf\u9694 1ms \u5411\u4e0a\u8ba1\u6570\u4e00\u6b21\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"c\" class=\"language-c\">void EXTI0_IRQHandler(void)\n{\n  \/\/\u4e0a\u4e00\u6b21\u54cd\u5e94\u65f6\u95f4\n  static unsigned int s_iLastTimeMs = 0;\n  \n  \/\/\u5f53\u524d\u7cfb\u7edf\u65f6\u95f4\n  unsigned int sysTime;\n\n  \/\/\u6821\u9a8c\u5916\u90e8\u4e2d\u65ad\u6807\u5fd7\u4f4d\n  if(SET == exti_flag_get(EXTI_0))\n  {\n    \/\/\u83b7\u53d6\u5f53\u524d\u7cfb\u7edf\u65f6\u95f4\n    sysTime = GetSysTime();\n\n    \/\/\u5f53\u524d\u7cfb\u7edf\u65f6\u95f4\u8ddd\u79bb\u4e0a\u4e00\u6b21\u54cd\u5e94\u8d85\u8fc7\u4e86 100ms\uff0c\u8bf4\u660e\u662f\u4e00\u6b21\u65b0\u7684\u6309\u952e\u4e8b\u4ef6\n    if((sysTime - s_iLastTimeMs) &gt;= 100)\n    {\n      \/\/\u6309\u952e\u54cd\u5e94\n      ...\n\n      \/\/\u8bb0\u5f55\u5f53\u524d\u54cd\u5e94\u65f6\u95f4\n      s_iLastTimeMs = sysTime;\n    }\n\n    \/\/\u6e05\u9664\u4e2d\u65ad\u6807\u5fd7\u4f4d\n    exti_flag_clear(EXTI_0);\n  }\n}<\/code><\/pre>\n\n\n\n<p>\u5f53\u7136\uff0c\u6211\u4eec\u4e5f\u53ef\u4ee5\u8ba9\u7a0b\u5e8f\u5b9a\u65f6\u626b\u63cf\u6309\u952e\u7535\u5e73\u72b6\u6001\uff0c\u7b80\u5355\u7684\u6309\u952e\u626b\u63cf\u9a71\u52a8\u5982\u4e0b\u6240\u793a\u3002\u60f3\u8981\u6355\u6293\u4e0b\u964d\u6cbf\u7684\u8bdd\uff0c\u9700\u8981\u62ff\u5f53\u524d\u6309\u952e\u72b6\u6001\u548c\u4e0a\u4e00\u4e2a\u6309\u952e\u72b6\u6001\u505a\u6bd4\u8f83\uff0c\u5982\u679c\u4e0a\u4e00\u4e2a\u65f6\u523b\u6309\u952e\u4e3a\u62ac\u8d77\u800c\u5f53\u524d\u4e3a\u6309\u4e0b\u72b6\u6001\uff0c\u5219\u8bf4\u660e\u53d1\u751f\u4e86\u4e00\u4e2a\u4e0b\u964d\u6cbf\u3002\u6700\u540e\u522b\u5fd8\u8bb0\u4e86\u8ddf\u8e2a\u8bb0\u5f55\u6309\u952e\u72b6\u6001\uff0c\u4fdd\u5b58\u5f53\u524d\u952e\u503c\u3002\u6bcf\u9694 50ms \u6216 100ms \u8c03\u7528\u4e00\u6b21\uff0c\u53ef\u4ee5\u8d77\u5230\u4e0d\u9519\u7684\u53bb\u6296\u6548\u679c\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"c\" class=\"language-c\">int ScanKey(void)\n{\n  \/\/\u6309\u952e\u4e0a\u4e00\u6b21\u7684\u7535\u5e73\u72b6\u6001\n  static unsigned char s_iLastState = 1;\n  \n  \/\/\u6309\u952e\u5f53\u524d\u7684\u7535\u5e73\u72b6\u6001\n  unsigned char key;\n\n  \/\/\u8fd4\u56de\u503c\n  unsigned char ret = 0;\n\n  \/\/\u83b7\u53d6\u6309\u952e\u5f53\u524d\u7535\u5e73\u72b6\u6001\n  key = gpio_input_bit_get(GPIOA, GPIO_PIN_0);\n\n  \/\/\u68c0\u6d4b\u5230\u4e0b\u964d\u6cbf\n  if((0 == key) &amp;&amp; (1 == s_iLastState)\n  {\n    ret = 1;\n  }\n\n  \/\/\u4fdd\u5b58\u5f53\u524d\u6309\u952e\u7535\u5e73\u72b6\u6001\n  s_iLastState = key;\n\n  \/\/\u8fd4\u56de\u68c0\u6d4b\u7ed3\u679c\n  return ret;\n}<\/code><\/pre>\n\n\n\n<p>\u5e26\u53bb\u6296\u7684\u6309\u952e\u9a71\u52a8\u5982\u4e0b\u6240\u793a\uff0c\u6bcf\u9694 10ms \u8c03\u7528\u4e00\u6b21\uff0c\u5373\u53ef\u8d77\u5230 80ms \u7684\u8f6f\u4ef6\u53bb\u6296\u3002\u5982\u679c\u8bb0\u5f55\u4e0b\u6309\u952e\u6309\u4e0b\u4ee5\u53ca\u62ac\u8d77\u7684\u65f6\u95f4\uff0c\u8fd8\u53ef\u4ee5\u8bc6\u522b\u957f\u6309\u548c\u6bb5\u6309\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"c\" class=\"language-c\">int ScanKey(void)\n{\n  \/\/\u6309\u952e\u4e0a\u4e00\u6b21\u7684\u7535\u5e73\u72b6\u6001\n  static unsigned char s_iLastState = 0xFF;\n\n  \/\/\u5f53\u524d\u6309\u952e\u72b6\u6001\n  static unsigned char s_iKeyValue = 0xFF;\n  \n  \/\/\u8fd4\u56de\u503c\n  unsigned char ret = 0;\n\n  \/\/\u83b7\u53d6\u6309\u952e\u5f53\u524d\u7535\u5e73\u72b6\u6001\n  s_iKeyValue = (s_iKeyValue &lt;&lt; 1) | gpio_input_bit_get(GPIOA, GPIO_PIN_0);\n\n  \/\/\u68c0\u6d4b\u5230\u4e0b\u964d\u6cbf\n  if((0x00 == s_iKeyValue) &amp;&amp; (0x00 != s_iLastState)\n  {\n    ret = 1;\n  }\n\n  \/\/\u4fdd\u5b58\u5f53\u524d\u6309\u952e\u7535\u5e73\u72b6\u6001\n  s_iLastState = s_iKeyValue;\n\n  \/\/\u8fd4\u56de\u68c0\u6d4b\u7ed3\u679c\n  return ret;\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u5206\u6790\u5355\u7247\u673a\u4e2d\u7684\u6309\u952e\u626b\u63cf<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[],"_links":{"self":[{"href":"https:\/\/www.huangrongzhen.ink\/index.php?rest_route=\/wp\/v2\/posts\/1609"}],"collection":[{"href":"https:\/\/www.huangrongzhen.ink\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.huangrongzhen.ink\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.huangrongzhen.ink\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.huangrongzhen.ink\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1609"}],"version-history":[{"count":14,"href":"https:\/\/www.huangrongzhen.ink\/index.php?rest_route=\/wp\/v2\/posts\/1609\/revisions"}],"predecessor-version":[{"id":1623,"href":"https:\/\/www.huangrongzhen.ink\/index.php?rest_route=\/wp\/v2\/posts\/1609\/revisions\/1623"}],"wp:attachment":[{"href":"https:\/\/www.huangrongzhen.ink\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1609"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.huangrongzhen.ink\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1609"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.huangrongzhen.ink\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1609"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}