{"id":2566,"date":"2022-04-17T10:55:58","date_gmt":"2022-04-17T02:55:58","guid":{"rendered":"https:\/\/www.block.tw\/blog\/?p=2566"},"modified":"2024-03-15T15:57:26","modified_gmt":"2024-03-15T07:57:26","slug":"scankeyboard","status":"publish","type":"post","link":"https:\/\/www.block.tw\/blog\/scankeyboard\/","title":{"rendered":"\u9375\u76e4\u6383\u63cf"},"content":{"rendered":"
\n
\"\u9019\u5f35\u5716\u7247\u7684
4X4\u6383\u63cf\u5f0f\u7684\u9375\u76e4<\/figcaption><\/figure>\n<\/div>\n\n\n

\u4e4b\u524d\u505a\u8f38\u5165\u5be6\u7fd2\u6642(INPUT_PULLUP)\uff0c\u67094\u500b\u6309\u9375(\u5982\u4e0b\u5716\uff09\uff0c1\u500b\u6309\u9375\u8981\u4f54\u7528 arduino 1\u500b\u8f38\u51fa\u5165\u63a5\u8173\uff0c4\u500b\u6309\u9375\u89814\u500b\u8f38\u51fa\u5165\u63a5\u8173\uff0c4\u500b\u6309\u9375\u6709\u4e00\u7aef\u63a5\u5728\u4e00\u8d77\u76f4\u63a5\u63a5\u5730\u3002\u5982\u679c\u670916\u500b\u6309\u9375\uff0c\u6b64\u6642\u752816\u652farduino \u63a5\u8173\uff0c\u6703\u628a arduino \u7684\u63a5\u8173\u7d66\u7528\u5149\uff0c\u56e0\u6b64\u5fc5\u9700\u8981\u4f7f\u7528\u53e6\u5916\u4e00\u7a2e\u65b9\u5f0f\u4f86\u8655\u7406\u6309\u9375\u8f38\u5165(\u6383\u63cf\u5f0f\u7684\u8f38\u5165\u65b9\u5f0f)\u3002<\/p>\n\n\n

\n
\"\"\/<\/figure>\n<\/div>\n\n\n
\n\n\n
\n
\"\"\/<\/figure>\n<\/div>\n\n\n

\u4e0a\u5716\u662f 4X4\u9375\u76e4\u7684\u96fb\u8def\u5716\uff0c\u7576\u8981\u4f7f\u7528\u9375\u76e4\u6383\u63cf\u6642\uff0c\u4e0d\u6703\u76f4\u63a5\u5c07 R1\u3001R2\u3001R3\u3001R4 \u63a5\u5730\uff0c\u800c\u662f\u76f4\u63a5\u63a5\u5230 arduino \u8f38\u51fa\u63a5\u8173\uff0cC1\u3001C2\u3001C3\u3001C4\u63a5\u5230 arduino \u8f38\u5165\u63a5\u8173\u3002<\/p>\n\n\n\n

\u9375\u76e4\u6383\u63cf\u7a0b\u5f0f<\/h2>\n\n\n\n
\/***************************************************\/\n\/*  \u9375\u76e4\u6383\u63cf\u7a0b\u5f0f\uff0c\u6309S1 code=1\uff0c\u6309S2 code=2 ...       *\/\n\/***************************************************\/\n\n    code = 0 ;\n    for(int i=0;i<4;i++){\n        \/\/\u4f9d\u5e8f\u5c07RS[i]\u7684\u63a5\u8173\u8f38\u51fa\u4f4e\u96fb\u4f4d \n        digitalWrite(RS[i],LOW);\n        \/\/\u4f9d\u5e8f\u6aa2\u6e2cCS[j]\u7684\u63a5\u8173\u662f\u5426\u662f\u4f4e\u96fb\u4f4d(\u662f\u5426\u6309\u9375)\n        for(int j=0;j<4;j++){\n            if(!digitalRead(CS[j])){\n              code = 1+4*i+j;  \n              Serial.println(code); \/\/\u9019\u662f\u6e2c\u8a66\u6309\u9375\u72c0\u614b\u7a0b\u5f0f\uff0c\u6b63\u5f0f\u4f7f\u7528\u6642\u8acb\u522a\u9664\n              delay(500); \/\/\u9019\u662f\u6e2c\u8a66\u6309\u9375\u72c0\u614b\u7a0b\u5f0f\uff0c\u6b63\u5f0f\u4f7f\u7528\u6642\u8acb\u522a\u9664\n              break;\n            }\n        }\n       \/\/\u5c07RS[i]\u7684\u63a5\u8173\u8f38\u51fa\u9ad8\u96fb\u4f4d \n        digitalWrite(RS[i],HIGH);\n    }  \n    <\/code><\/pre>\n\n\n\n
\n\n\n\n
\u7a0b\u5f0f\u4f7f\u7528 2 \u5c64 for \u8ff4\u5708\u4f86\u505a\u6309\u9215\u8f38\u5165\u6aa2\u6e2c\u5de5\u4f5c\uff0c\u7b2c1\u5c64 for \u8ff4\u5708\u4f9d\u5e8f\u4ee4 R1\u3001R2\u3001R3\u3001R4 \u4f4e\u96fb\u4f4d\uff0c\u7b2c 2 \u5c64 for \u8ff4\u5708\u5206\u5225\u6aa2\u6e2c C1\u3001C2\u3001C3\u3001C4 \u662f\u5426\u662f\u4f4e\u96fb\u4f4d\u3002<\/p>\n\n\n\n
\u7576 j=0 \u6642\uff0cR1\u4f4e\u96fb\u4f4d\uff08L\uff09\uff0cR2\u3001R3\u3001R4\u9ad8\u96fb\u4f4d\uff08H\uff09\uff0c\u4f9d\u5e8f\u6aa2\u6e2c C1~C4 \u662f\u5426\u4f4e\u96fb\u4f4d\uff1a
   i=0\uff0c\u6aa2\u6e2c C1\u662f\u5426\u4f4e\u96fb\u4f4d\uff0c\u5982\u679c\u662f\u4f4e\u96fb\u4f4d\u8868\u793a S1<\/mark> \u6309\u4e0b\uff1bcode = 1+4*0+0 =1
   i=1\uff0c\u6aa2\u6e2c C2\u662f\u5426\u4f4e\u96fb\u4f4d\uff0c\u5982\u679c\u662f\u4f4e\u96fb\u4f4d\u8868\u793a S2<\/mark> \u6309\u4e0b\uff1bcode = 1+4*0+1 =2
   i=2\uff0c\u6aa2\u6e2c C3\u662f\u5426\u4f4e\u96fb\u4f4d\uff0c\u5982\u679c\u662f\u4f4e\u96fb\u4f4d\u8868\u793a S3<\/mark> \u6309\u4e0b\uff1bcode = 1+4*0+2 =3
   i=3\uff0c\u6aa2\u6e2c C4\u662f\u5426\u4f4e\u96fb\u4f4d\uff0c\u5982\u679c\u662f\u4f4e\u96fb\u4f4d\u8868\u793a S4<\/mark> \u6309\u4e0b\uff1bcode = 1+4*0+3 =4<\/p>\n\n\n
\n
\"\"\/<\/figure>\n<\/div>\n\n\n
\n\n\n\n
\u7576 j=1 \u6642\uff0cR2\u4f4e\u96fb\u4f4d\uff08L\uff09\uff0cR1\u3001R3\u3001R4\u9ad8\u96fb\u4f4d\uff08H\uff09\uff0c\u4f9d\u5e8f\u6aa2\u6e2c C1~C4 \u662f\u5426\u4f4e\u96fb\u4f4d\uff1a
   i=0\uff0c\u6aa2\u6e2c C1\u662f\u5426\u4f4e\u96fb\u4f4d\uff0c\u5982\u679c\u662f\u4f4e\u96fb\u4f4d\u8868\u793a S5<\/mark> \u6309\u4e0b\uff1bcode = 1+4*1+0 =5
   i=1\uff0c\u6aa2\u6e2c C2\u662f\u5426\u4f4e\u96fb\u4f4d\uff0c\u5982\u679c\u662f\u4f4e\u96fb\u4f4d\u8868\u793a S6<\/mark> \u6309\u4e0b\uff1bcode = 1+4*1+1 =6
   i=2\uff0c\u6aa2\u6e2c C3\u662f\u5426\u4f4e\u96fb\u4f4d\uff0c\u5982\u679c\u662f\u4f4e\u96fb\u4f4d\u8868\u793a S7<\/mark> \u6309\u4e0b\uff1bcode = 1+4*1+2 =7
   i=3\uff0c\u6aa2\u6e2c C4\u662f\u5426\u4f4e\u96fb\u4f4d\uff0c\u5982\u679c\u662f\u4f4e\u96fb\u4f4d\u8868\u793a S8<\/mark> \u6309\u4e0b\uff1bcode = 1+4*1+3 =8<\/p>\n\n\n
\n
\"\"\/<\/figure>\n<\/div>\n\n\n
\n\n\n\n
\u7576 j=2 \u6642\uff0cR3\u4f4e\u96fb\u4f4d\uff08L\uff09\uff0cR1\u3001R2\u3001R4\u9ad8\u96fb\u4f4d\uff08H\uff09\uff0c\u4f9d\u5e8f\u6aa2\u6e2c C1~C4 \u662f\u5426\u4f4e\u96fb\u4f4d\uff1a
   i=0\uff0c\u6aa2\u6e2c C1\u662f\u5426\u4f4e\u96fb\u4f4d\uff0c\u5982\u679c\u662f\u4f4e\u96fb\u4f4d\u8868\u793a S9<\/mark> \u6309\u4e0b\uff1bcode = 1+4*2+0 =9
   i=1\uff0c\u6aa2\u6e2c C2\u662f\u5426\u4f4e\u96fb\u4f4d\uff0c\u5982\u679c\u662f\u4f4e\u96fb\u4f4d\u8868\u793a S10<\/mark> \u6309\u4e0b\uff1bcode = 1+4*2+1 =10
   i=2\uff0c\u6aa2\u6e2c C3\u662f\u5426\u4f4e\u96fb\u4f4d\uff0c\u5982\u679c\u662f\u4f4e\u96fb\u4f4d\u8868\u793a S11<\/mark> \u6309\u4e0b\uff1bcode = 1+4*2+2 =11
   i=3\uff0c\u6aa2\u6e2c C4\u662f\u5426\u4f4e\u96fb\u4f4d\uff0c\u5982\u679c\u662f\u4f4e\u96fb\u4f4d\u8868\u793a S12<\/mark> \u6309\u4e0b\uff1bcode = 1+4*2+3 =12<\/p>\n\n\n
\n
\"\"\/<\/figure>\n<\/div>\n\n\n
\n\n\n\n
\u7576 j=3 \u6642\uff0cR4\u4f4e\u96fb\u4f4d\uff08L\uff09\uff0cR1~R3\u9ad8\u96fb\u4f4d\uff08H\uff09\uff0c\u4f9d\u5e8f\u6aa2\u6e2c C1~C4 \u662f\u5426\u4f4e\u96fb\u4f4d\uff1a
   i=0\uff0c\u6aa2\u6e2c C1\u662f\u5426\u4f4e\u96fb\u4f4d\uff0c\u5982\u679c\u662f\u4f4e\u96fb\u4f4d\u8868\u793a S13<\/mark> \u6309\u4e0b\uff1bcode = 1+4*3+0 =13
   i=1\uff0c\u6aa2\u6e2c C2\u662f\u5426\u4f4e\u96fb\u4f4d\uff0c\u5982\u679c\u662f\u4f4e\u96fb\u4f4d\u8868\u793a S14<\/mark> \u6309\u4e0b\uff1bcode = 1+4*3+1 =14
   i=2\uff0c\u6aa2\u6e2c C3\u662f\u5426\u4f4e\u96fb\u4f4d\uff0c\u5982\u679c\u662f\u4f4e\u96fb\u4f4d\u8868\u793a S15<\/mark> \u6309\u4e0b\uff1bcode = 1+4*3+2 =15
   i=3\uff0c\u6aa2\u6e2c C4\u662f\u5426\u4f4e\u96fb\u4f4d\uff0c\u5982\u679c\u662f\u4f4e\u96fb\u4f4d\u8868\u793a S16<\/mark> \u6309\u4e0b\uff1bcode = 1+4*3+3 =16<\/p>\n\n\n
\n
\"\"\/<\/figure>\n<\/div>\n\n\n
\u5165\u9580<\/div><\/span>
\u77e5\u8b58<\/div><\/span>
\u8a9e\u6cd5<\/div><\/span>
\u6d41\u7a0b<\/div><\/span>
\u51fd\u5f0f<\/div><\/span>
\u5be6\u7fd2<\/div><\/span><\/div>
Arduino \u7c21\u4ecb<\/a>
\u6e96\u5099\u4f60\u7684 Arduino \u958b\u767c\u5de5\u5177<\/a>
\u6e96\u5099\u4f60\u7684 ESP12E\/F \u958b\u767c\u5de5\u5177<\/a>
Arduino Uno \u786c\u9ad4<\/a>
Arduino nano \u786c\u9ad4<\/a>
ESP-12F(ESP8266)\u786c\u9ad4<\/a>
Arduino \u7a0b\u5f0f\u8a9e\u6cd5<\/a>
\u532f\u5165 zip \u7a0b\u5f0f\u5eab<\/a> 
<\/p><\/div><\/div><\/div>
\u99dd\u5cf0\u5f0f\u547d\u540d\u6cd5<\/a>
UART \u4e32\u5217\u901a\u8a0a<\/a> 
PWM\u63a7\u5236<\/a>
\u9375\u76e4\u6383\u63cf<\/a>
ThingSpeak \u96f2\u7aef\u8cc7\u6599\u5eab \u5e33\u865f\u7533\u8acb<\/a>
ThingSpeak \u96f2\u7aef\u8cc7\u6599\u5eab \u8a2d\u5b9a<\/a><\/p><\/div><\/div><\/div>
Arduino \u9032\u5236\u8868\u793a<\/a>
Arduino \u9663\u5217<\/a>
Arduino \u5e38\u6578\u8207\u8b8a\u6578<\/a>

Arduino \u7b97\u6578\u904b\u7b97\u5b50<\/a>
Arduino \u8907\u5408\u904b\u7b97\u5b50<\/a>
Arduino \u5e03\u6797\u904b\u7b97\u5b50<\/a>
Arduino \u6bd4\u8f03\u904b\u7b97\u5b50<\/a>

Arduino IDE \u932f\u8aa4\u8a0a\u606f<\/a><\/p><\/div><\/div><\/div>
Arduino for \u8ff4\u5708<\/a>
Arduino if \u689d\u4ef6\u5224\u65b7<\/a>
Arduino switch \u9078\u64c7\u6307\u4ee4<\/a>
Arduino while \u8ff4\u5708<\/a>
Arduino do while \u8ff4\u5708<\/a><\/p><\/div><\/div><\/div>
Arduino \u6578\u4f4dI\/O\u51fd\u5f0f<\/a>
Arduino \u985e\u6bd4I\/O\u51fd\u5f0f<\/a>
Arduino \u6642\u9593\u51fd\u5f0f<\/a>
Arduino \u6578\u5b78\u51fd\u5f0f<\/a>
Arduino \u901a\u8a0a\u7269\u4ef6\u51fd\u5f0f<\/a>
Arduino \u767c\u97f3\u51fd\u5f0f<\/a>
Arduino \u81ea\u5b9a\u51fd\u5f0f<\/a><\/p><\/div><\/div><\/div>
Arduino \u8f38\u51fa\u5be6\u7fd2<\/a>(\u55ae\u71c8\u9583\u720d)
Arduino \u8f38\u51fa\u5be6\u7fd2<\/a>(\u8dd1\u99ac\u71c8-\u611a\u516c\u79fb\u5c71)
Arduino \u8f38\u51fa\u5be6\u7fd2<\/a>(\u8dd1\u99ac\u71c8-for\u8ff4\u5708)
Arduino \u6578\u4f4d\u8f38\u5165\u5be6\u7fd2<\/a>
Arduino \u6578\u4f4d\u8f38\u5165\u5be6\u7fd2(INPUT_PULLUP)<\/a>
Arduino \u985e\u6bd4\u8f38\u5165\u5be6\u7fd2<\/a>
Arduino PWM <\/a>\u5be6\u7fd2<\/a> (\u547c\u5438\u71c8)
 Arduino PWM \u5be6\u7fd2<\/a> (\u5149\u611f\u61c9\u8abf\u5149\u71c8) 
Arduino 8×8 LED Matrix MAX7219 \u5be6\u7fd2<\/a> 
Arduino \u7d05\u7da0\u71c8\u5c0f\u7da0\u4eba \u5be6\u7fd2<\/a> 
Arduino \u8a08\u6642\u5668 \u5be6\u7fd2<\/a>
Arduino \u97f3\u6a02\u76d2<\/a>
Arduino \u96fb\u5b50\u7434(\u9375\u76e4\u6383\u63cf)<\/a>
Arduino DHT11 \u6eab\u6fd5\u5ea6\u611f\u61c9\u5668<\/a>
Arduino OLED \u986f\u793a<\/a>
Arduino \u8d85\u97f3\u6ce2\u6e2c\u8ddd\u6a21\u7d44 HC-SR04<\/a><\/span>
Arduino \u57f7\u884c\u6642\u9593\u5be6\u7fd2<\/a>
Arduino \u96fb\u5bb9\u6e2c\u8a66\u5668<\/a>
Arduino \u7d05\u5916\u7dda\u63a5\u6536\u5be6\u7fd2<\/a>
Arduino \u7d05\u5916\u7dda\u767c\u5c04\u5be6\u7fd2 EPSON \u6295\u5f71\u6a5f\u63a7\u5236 <\/a>
ESP-12F \u7db2\u8def\u667a\u6167\u958b\u95dc(MQTT)<\/a>
ESP-12F \u96f2\u7aef\u8a18\u9304\u578b K-Type \u6eab\u5ea6\u8a08(MQTT  ThingSpeak)<\/a>
ESP-12F \u624b\u6a5f\u96f2\u7aef\u7d05\u5916\u7dda\u63a7\u5236<\/a>
ESP-12F \u7db2\u8def\u96fb\u53f0\u6536\u97f3\u6a5f<\/a>
ESP-12F \u96fb\u5b50\u9f13<\/a><\/p><\/div><\/div><\/div><\/div><\/div><\/div><\/section>\n","protected":false},"excerpt":{"rendered":"
\u4e4b\u524d\u505a\u8f38\u5165\u5be6\u7fd2\u6642(INPUT_PULLUP)\uff0c\u67094\u500b\u6309\u9375(\u5982\u4e0b\u5716\uff09\uff0c1\u500b\u6309\u9375\u8981\u4f54\u7528 arduino 1\u500b\u8f38\u51fa\u5165… 
 Read more<\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[72,3],"tags":[],"class_list":["post-2566","post","type-post","status-publish","format-standard","hentry","category-knowledge","category-mcu"],"gutentor_comment":0,"featured_image_urls":{"full":"","thumbnail":"","medium":"","medium_large":"","large":"","1536x1536":"","2048x2048":"","post-thumbnail":"","mesmerize-full-hd":""},"post_excerpt_stackable":"
4X4\u6383\u63cf\u5f0f\u7684\u9375\u76e4 \u4e4b\u524d\u505a\u8f38\u5165\u5be6\u7fd2\u6642(INPUT_PULLUP)\uff0c\u67094\u500b\u6309\u9375(\u5982\u4e0b\u5716\uff09\uff0c1\u500b\u6309\u9375\u8981\u4f54\u7528 arduino 1\u500b\u8f38\u51fa\u5165\u63a5\u8173\uff0c4\u500b\u6309\u9375\u89814\u500b\u8f38\u51fa\u5165\u63a5\u8173\uff0c4\u500b\u6309\u9375\u6709\u4e00\u7aef\u63a5\u5728\u4e00\u8d77\u76f4\u63a5\u63a5\u5730\u3002\u5982\u679c\u6709…<\/p>\n","category_list":"Arduino \u76f8\u95dc\u77e5\u8b58<\/a>, \u5fae\u8655\u7406\u6a5f<\/a>","author_info":{"name":"mcu","url":"https:\/\/www.block.tw\/blog\/author\/mcu\/"},"comments_num":"0 comments","featured_image_urls_v2":{"full":"","thumbnail":"","medium":"","medium_large":"","large":"","1536x1536":"","2048x2048":"","post-thumbnail":"","mesmerize-full-hd":""},"post_excerpt_stackable_v2":"
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