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王桂花

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[问答]

请问key_up确实加在这个位置吗?

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hknnxCrk+/NeVPDmKEFJBOxhWz78WH3ETcW/HhPQgHyegL8RSl2OU8KyCmH3kSL9MIbPp1RpyQgif/2Zk7pRrBULzc0YJlei4OL9VH0EZOEm1DIjWXMhrE4OkXQs3F/Szef7BecTKrs8pit1Nt6/JcPyQmT8zKGLljF0jcvWPuAj0SVKCyqxh/h/LJjJ83dmfCPJTBrMN8SIep9gCmhDIBJLPvxJb8fvcUOgktV32tcOX76nAh/m7y1bmS/CRVe/WHhgqrqklR6Cz/6Rt1z65PP2oNR5pFheaVg8FQPNflzd7P099Acv3he7U6qyx33XT4uTjX6tRkfZS+HmUd20tMu7oQmSbC9IZealTT/dTHMHo+TJ7YTrNOag8ZQdYg2Tr8TPxUf57uoz8IkebWVrkGnvqUmhFSihWx+eqJ0oKkoH59eCFea8Edb/JRfOYfMfsmw7RcY/Yp4WU0MqfpyDDl6KnpB45RpaInnfh6pjsdOG5RfX+hNAjZKU+klBjvfSXeovkDDmA8tjK0Dj/ReUCaj6uUCnElzmMllRSuVNDNjj8WCjkQjKn2RpJLQA9G4pW+B7PpldJ65L14WdHMcZp/1OxbT7W01OzTwstoZHm/2aKIvnfjZ7pNVRHozCLopaAa7TzONpgfbrSpAdoLNrjUdJqeN98RcnXQZPLHQ+3ELs9osqaFwJXYJyZsXbIvekvB/qrG6KcUfNv6AtGEC5t9KLyIRjads0nF1OJOONOv5zf6U/c0ESwVnLxHe8+M9pN1gGfxOoS90y+IgKAjchUZr2utMTHhUrMvI7DJaB/VYozPsIzGWZXRqrCjrpW/d0xf6aWgsoXBYIiRaojZRVOkozizQJ/sdDqivJPWojeT0bfB5mOjkU33e+rINVqjNP9OPppYjM+f4v25FadvwlNCqmu9q2JNa4i8wOLycic0KvFw1ZhJb5KRPMA3mudndpVqZpcnOq5gpwzFHvFzNWkCNsdQrKP5Z/xeRFMjPisYGLAfIsZvWHlO1YoYPlKfchGLjO9S8miFtaR7zN0QVNRXkqwGCgJKj8q5nMV6eoKavpB2tGSUUAu37Mhdh5hoPBKHCeh1CMukpl+0jzH/NDgSC6Q+K6plpRTOxwLIb5JJxOE9fqlHMzM+SpkwiC344l7mteroe8fTE3rP3RBUksyoHmK93uFbMXS8p0cIDTB6iLO5u4ZMK5DgHKhekRk0yJp9zhnqlIL5WNHIB9URjvLaJCO89mtDzH2DV/hkGECakbtbN2Kbpyj0EhZUy0TSGSN8c8EXhe8fySTcT+4XsJnuuTOmH8O0xuWF2J+uiQMWUr2FNSqGYXoPa1QMw/QeFlQMw/QeFlQMw/QcIf4P4Ag8IO3m8MAAAAAASUVORK5CYII="  lazyloadthumb="1" border="0" alt="">
key_up=0标记这次key已经按下  不应该是在确定按键已经按下之后吗??  代码不应该加在if(KEY确实按下)之后么??

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李子邯

2019-10-12 07:40:14
u8 KEY_Scan(void)
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黄乃康

2019-10-12 07:57:26
u8 KEY_Scan(void)
    {
     static u8 key_up=1;
      if(key_up &&  KEY按下)
      {
        delay_ms(10);//延时,防抖
        key_up=0;//标记这次key已经按下
        if(KEY确实按下)
          {
           return KEY_VALUE;
          }
        }else if(KEY没有按下)  key_up=1;
       return 没有按下
    }
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