{"id":22703,"date":"2023-03-17T00:00:49","date_gmt":"2023-03-16T16:00:49","guid":{"rendered":"https:\/\/techclass.wfjydl.com\/?p=22703"},"modified":"2023-03-16T14:50:21","modified_gmt":"2023-03-16T06:50:21","slug":"%e4%bd%bf%e7%94%a8d-a%e8%bd%ac%e6%8d%a2%e5%99%a8%e7%81%b5%e6%b4%bb%e6%8e%a7%e5%88%b6%e7%94%b5%e5%8e%8b%e5%b9%b6%e4%bd%bf%e7%94%a8arduino%e8%be%93%e5%87%ba%e6%a8%a1%e6%8b%9f%e4%bf%a1%e5%8f%b7%e7%9a%84","status":"publish","type":"post","link":"https:\/\/techclass.wfjydl.com\/knowledge\/tech-info\/arduino\/control-voltage-with-da-converter\/","title":{"rendered":"\u4f7f\u7528D\/A\u8f6c\u6362\u5668\u7075\u6d3b\u63a7\u5236\u7535\u538b\u5e76\u4f7f\u7528Arduino\u8f93\u51fa\u6a21\u62df\u4fe1\u53f7\u7684\u65b9\u6cd5"},"content":{"rendered":"

Arduino\u5177\u6709\u8f93\u51fa\u6570\u5b57\u4fe1\u53f7\u548cPWM\u4fe1\u53f7\u7b49\u529f\u80fd\uff0c\u4f46\u4e0d\u5177\u5907\u8f93\u51fa\u6a21\u62df\u4fe1\u53f7\u7684\u529f\u80fd\u3002\u8fd9\u6b21\uff0c\u6211\u4eec\u5c06\u4e3a\u60a8\u4ecb\u7ecd\u80fd\u591f\u5b9e\u73b0\u8fd9\u79cd\u6a21\u62df\u4fe1\u53f7\u8f93\u51fa\u7684D\/A\u8f6c\u6362\u5668\u3002<\/p>\n

 <\/p>\n

\u76ee\u5f55<\/h2>\n
    \n
  1. \u4ec0\u4e48\u662fD\/A\u8f6c\u6362\u5668\uff1f<\/a><\/li>\n
  2. \u5982\u4f55\u901a\u8fc7Arduino\u4f7f\u7528D\/A\u8f6c\u6362\u5668\uff1f<\/a><\/li>\n
  3. \u5c1d\u8bd5\u7528Arduino\u63a7\u5236D\/A\u8f6c\u6362\u5668<\/a><\/li>\n
  4. \u8fde\u63a5\u8bbe\u5907\u6570\u5b57\u548c\u4eba\u7c7b\u6a21\u62df\u7684\u6865\u6881\u2014\u2014D\/A\u8f6c\u6362\u5668<\/a><\/li>\n<\/ol>\n

     <\/p>\n

    1. \u4ec0\u4e48\u662fD\/A\u8f6c\u6362\u5668\uff1f<\/h2>\n

    <\/p>\n

     <\/p>\n

    \u6570\u5b57\u4fe1\u53f7\u662f\u7531\u4e8c\u8fdb\u5236\u6570\u5b570\u548c1\u8868\u793a\u7684\u4fe1\u53f7\u3002\u5728\u7535\u5b50\u7535\u8def\u9886\u57df\uff0c\u6709\u65f6\u4e5f\u7528\u201cLOW\/HIGH\u201d\u6216\u201cON\/OFF\u201d\u6765\u8868\u793a\u3002\u800c\u81ea\u7136\u754c\u4e2d\u7684\u73b0\u8c61\u548c\u4eba\u7c7b\u80fd\u591f\u611f\u77e5\u7684\u4fe1\u53f7\u90fd\u5c5e\u4e8e\u6a21\u62df\u4fe1\u53f7\u3002\u6a21\u62df\u4fe1\u53f7\u7684\u7279\u70b9\u662f\u5176\u5927\u5c0f\u3001\u65f6\u95f4\u548c\u6570\u91cf\u662f\u8fde\u7eed\u7684\u3002<\/p>\n

    D\/A\u8f6c\u6362\u5668\u662f\u4e00\u79cd\u80fd\u591f\u5c06\u6570\u5b57\u4fe1\u53f7\u8f6c\u6362\u4e3a\u6a21\u62df\u4fe1\u53f7\u5e76\u8f93\u51fa\u7684\u8f6c\u6362\u5668\u3002<\/p>\n

    <\/p>\n

     <\/p>\n

    \u97f3\u9891\u548c\u89c6\u9891\u5c5e\u4e8e\u6a21\u62df\u4fe1\u53f7\u3002\u7136\u800c\uff0c\u8fd1\u5e74\u6765\uff0c\u97f3\u9891\u5904\u7406\u548c\u56fe\u50cf\u3001\u89c6\u9891\u5904\u7406\u5f00\u59cb\u9700\u8981\u6570\u5b57\u4fe1\u53f7\u4e86\u3002\u5904\u7406\u6a21\u62df\u4fe1\u53f7\u65f6\u4e0d\u652f\u6301\u6ee4\u6ce2\u5904\u7406\u548c\u538b\u7f29\uff0c\u800c\u6570\u5b57\u4fe1\u53f7\u5219\u652f\u6301\u3002\u5c06\u5904\u7406\u540e\u7684\u6570\u5b57\u4fe1\u53f7\u8f6c\u6362\u56de\u6a21\u62df\u4fe1\u53f7\u5c31\u9700\u8981\u7528\u5230D\/A\u8f6c\u6362\u5668\u3002<\/p>\n

     <\/p>\n

    2. \u5982\u4f55\u901a\u8fc7Arduino\u4f7f\u7528D\/A\u8f6c\u6362\u5668\uff1f<\/h2>\n

    Arduino\u5305\u62ecArduino Uno\u3001Arduino Leonardo\u548cArduino Nano\u7b49\u591a\u79cd\u4ea7\u54c1\u3002
    \nArduino Due\u662f\u5185\u7f6eD\/A\u8f6c\u6362\u5668\u7684Arduino\u4e4b\u4e00\u3002\u4e0d\u8fc7Due\u7684\u5916\u5f62\u4e0eArduino Uno\u4e0d\u540c\uff0c\u5de5\u4f5c\u7535\u538b\u4e3a3.3V\uff0c\u4f7f\u7528\u65b9\u6cd5\u4e5f\u6709\u6240\u4e0d\u540c\u3002<\/p>\n

    \u5982\u679c\u8981\u4f7f\u7528\u5df2\u7ecf\u5f88\u666e\u53ca\u7684Arduino Uno\u6765\u8f93\u51fa\u6a21\u62df\u4fe1\u53f7\u7684\u8bdd\uff0c\u5c31\u9700\u8981\u5916\u7f6eD\/A\u8f6c\u6362\u5668IC\u3002<\/p>\n

    <\/p>\n

     <\/p>\n

    3. \u5c1d\u8bd5\u7528Arduino\u63a7\u5236D\/A\u8f6c\u6362\u5668<\/h2>\n

    \u8fd9\u6b21\uff0c\u6211\u4eec\u4e0d\u4f7f\u7528\u5185\u7f6eD\/A\u8f6c\u6362\u5668\u7684\u6269\u5c55\u677f\uff0c\u800c\u662f\u5c1d\u8bd5\u5c06D\/A\u8f6c\u6362\u5668IC\u76f4\u63a5\u8fde\u63a5\u5230Arduino\uff0c\u770b\u770b\u80fd\u5426\u8f93\u51fa\u6a21\u62df\u4fe1\u53f7\u3002\u6211\u4eec\u4f7f\u7528\u7684\u662f极悦娱乐\u7684D\/A\u8f6c\u6362\u5668IC\u201cBH2219FVM\u201d\uff088bit\u5206\u8fa8\u7387\uff0c\u53cc\u901a\u9053\uff09\u3002<\/p>\n

    <\/p>\n

    \u7531\u4e8eBH2219FVM\u4e3aMSOP8\u5c01\u88c5\uff0c\u6240\u4ee5\u6211\u4eec\u5c06\u4f7f\u7528\u8f6c\u6362\u677f\u6765\u4f7f\u5176\u9002\u914d\u4e07\u7528\u677f\u3002<\/p>\n

     <\/p>\n

    \u4e0eI2C\u548cSPI\u65b9\u5f0f\u7684D\/A\u8f6c\u6362\u5668\u4e0d\u540c\uff0c\u8fd9\u79cdDA\u8f6c\u6362\u5668\u901a\u8fc7\u4e09\u7ebf\u5236\u4e32\u884c\u901a\u4fe1\u8fd0\u884c\u3002\u7531\u4e8e\u5b83\u662f\u81ea\u6709\u65b9\u5f0f\uff0c\u5e76\u4e0d\u7b26\u5408\u7279\u5b9a\u534f\u8bae\uff0c\u56e0\u6b64\u9700\u8981\u81ea\u5df1\u521b\u5efa\u4e32\u884c\u901a\u4fe1\u5904\u7406\uff0c\u4ee5\u4fbfD\/A\u8f6c\u6362\u5668\u5728\u8349\u56fe\u4e2d\u6b63\u5e38\u5de5\u4f5c\u3002<\/p>\n

    <\/p>\n

    \u4e00\u8fb9\u67e5\u770bBH2219FVM\u7684\u6280\u672f\u89c4\u683c\u4e66\u4e00\u8fb9\u4e0eArduino\u8fde\u63a5\u3002\u5c06\u793a\u6ce2\u5668\u63a2\u5934\u8fde\u63a5\u5230\u8f93\u51fa\u5f15\u811a\u5e76\u786e\u8ba4\u6ce2\u5f62<\/p>\n

     <\/p>\n

    BH2219FVM\u7684\u6280\u672f\u89c4\u683c\u4e66\u4e2d\u63d0\u4f9b\u4e86\u8be6\u7ec6\u7684\u4f7f\u7528\u65b9\u6cd5\u3002\u9664\u4e86\u6700\u5927\u989d\u5b9a\u503c\u548c\u7535\u6c14\u7279\u6027\u5916\uff0c\u6280\u672f\u89c4\u683c\u4e66\u4e2d\u8fd8\u63d0\u4f9b\u600e\u6837\u65bd\u52a0\u4fe1\u53f7\u624d\u5de5\u4f5c\u7684\u64cd\u4f5c\u89c4\u8303\uff0c\u9700\u8981\u4e00\u8fb9\u9605\u8bfb\u8fd9\u4e9b\u5185\u5bb9\u4e00\u8fb9\u601d\u8003\u5904\u7406\u65b9\u6cd5\u3002<\/p>\n

    <\/p>\n

    \u53c2\u8003\uff1aD\/A\u8f6c\u6362\u5668 \u6807\u51c68bit\u5206\u8fa8\u7387 \u53cc\u901a\u9053\/\u4e09\u901a\u9053\u578b\uff5c极悦娱乐<\/a><\/p>\n

     <\/p>\n

    BH2219FVM\u7684\u63a7\u5236\u65b9\u6cd5\u5f88\u7b80\u5355\u3002\u5c06\u8f93\u51fa\u6a21\u62df\u4fe1\u53f7\u7684\u7aef\u53e3\uff084bit\uff09\u548c8bit\u6570\u636e\uff084bit\uff0b8bit\uff1d12bit\uff09\u4ee51bit\u4e3a\u5355\u4f4d\u4f9d\u6b21\u4f20\u8f93\u81f3DI\u5f15\u811a\u3002BH2219FVM\u5728CLK\u5f15\u811a\u7684\u4e0a\u5347\u6cbf\u8bfb\u53d6DI\u5f15\u811a\u300212bit\u4f20\u8f93\u5b8c\u6210\u540e\uff0c\u5982\u679cLD\u5f15\u811aON\uff0c\u5219\u8f93\u51fa\u4e0e\u6570\u636e\u5bf9\u5e94\u7684\u6a21\u62df\u4fe1\u53f7\u3002<\/p>\n

    \u4e0b\u9762\u4ee5\u5411AO1\u7aef\u53e3\u8f93\u51fa2.5V\u7535\u538b\u4e3a\u4f8b\u8fdb\u884c\u8bf4\u660e\u3002<\/p>\n

    \u6839\u636e\u4e0a\u8868\u201c\u901a\u9053\u8bbe\u7f6e\uff08BH2219FVM\uff09\u201d\uff0c\u524d4\u4f4d\u8868\u793a\u201cAO1\u7aef\u53e3\u201d\u7684\u56fa\u5b9a\u503c\u662f\u201c0000\u201d\u3002
    \n\u63a5\u4e0b\u6765\u7684\u6570\u636e\u662f\u8868\u793a\u201c2.5V\u201d\u76848\u4f4d\u503c\uff0c\u901a\u8fc7
    \n\u201c256 \u00d7 \u8f93\u51fa\u7535\u538b \u00f7 \u7535\u6e90\u7535\u538b \uff1d \u6570\u636e\u201d
    \n\u8fdb\u884c\u8ba1\u7b97\u3002\u7ed3\u679c\u662f\uff1a
    \n\u201c256 \u00d7 2.5[V] \u00f7 5[V] \uff1d 128\u201d\u3002<\/p>\n

    \u7531\u4e8e2.5V\u662f\u201c\u7535\u6e90\u7535\u538b\u7684\u4e00\u534a\u201d\uff0c\u6240\u4ee5\u6570\u636e\u662f\u201c8\u4f4d\u80fd\u8868\u793a\u7684\u6570\u5b57\uff08256\uff09\u7684\u4e00\u534a\u201d\uff0c\u4e5f\u5c31\u662f\u201c128\u201d\u3002\u7528\u4e8c\u8fdb\u5236\u8868\u793a\u65f6\uff0c128\u662f\u201c10000000\u201d\u3002<\/p>\n

    \u901a\u8fc7\u4f7fDI\u5f15\u811a\u6309\u7167CLK\u5f15\u811aON\u7684\u65f6\u5e8f\u4f9d\u6b21ON\/OFF\uff081\/0\uff09\uff0c\u5c06\u201c0000\u201d\u548c\u201c10000000\u201d\u53d1\u9001\u7ed9BH2219FVM\u3002\u6700\u540e\uff0c\u53ea\u8981\u4f7fLD\u5f15\u811aON\u3001OFF\uff0cBH2219FVM\u5373\u53ef\u8f93\u51fa2.5V\u7684\u6a21\u62df\u4fe1\u53f7\u3002<\/p>\n

    \u4e0b\u9762\u7684\u8349\u56fe\u662f\u901a\u8fc7\u4e32\u884c\u901a\u4fe1\u5c06\u6570\u636e\u4eceArduino\u53d1\u9001\u81f3BH2219FVM\uff0c\u5e76\u5c06\u201c\u952f\u9f7f\u6ce2\u201d\u8f93\u51fa\u81f3BH2219FVM\u7684AO1\u5f15\u811a\u3002<\/p>\n

    #define LD 8\r\n#define CLK 7\r\n#define DI 6\r\n\r\nboolean D[12];\r\n\r\n\/\/\u5c06\u8f93\u5165\u7684\u6570\u503c\u8f6c\u6362\u4e3a\u4e8c\u8fdb\u5236\u5e76\u4fdd\u5b58\u5728\u6570\u7ec4D0\uff5eD7\u4e2d\r\nint binary(int out)\r\n{\r\n  int i = 0;\r\n  for (i = 0; i < 8; i++) {\r\n    D[i] = out % 2;\r\n    out = out \/ 2;\r\n  }\r\n}\r\n\r\n\/\/\u5c06\u8f93\u51fa\u7aef\u53e3\u6307\u5b9a\u7ed3\u679c\u4fdd\u5b58\u5728\u6570\u7ec4D8\uff5eD11\u4e2d\r\nint chSelect(int outPin)\r\n{\r\n  int i;\r\n  if (outPin == 1) {\r\n    for (i = 8; i < 12; i++)\r\n    {\r\n      D[i] = LOW;\r\n    }\r\n  }\r\n  else if (outPin == 2)\r\n  {\r\n    D[8] = HIGH;\r\n    for (i = 9; i < 12; i++)\r\n    {\r\n      D[i] = LOW;\r\n    }\r\n  }\r\n}\r\n\r\n\/\/\u5c06\u6570\u7ec4\u8f93\u51fa\u5230DAC\r\nvoid outConfirm()\r\n{\r\n  int i;\r\n  for (i = 11; i >= 0; i--)\r\n  {\r\n    digitalWrite(DI, D[i]);\r\n    digitalWrite(CLK, HIGH);\r\n    digitalWrite(DI, LOW);\r\n    digitalWrite(CLK, LOW);\r\n  }\r\n  digitalWrite(LD, HIGH);\r\n  digitalWrite(LD, LOW);\r\n}\r\n\r\n\/\/\u5c06\u8f93\u51fa\u503c\u548c\u8f93\u51fa\u7aef\u53e3\u4f20\u9012\u7ed9\u6bcf\u4e2a\u53d8\u91cf\r\nint operationOut(int value, int ch)\r\n{\r\n  binary(value);\r\n  chSelect(ch);\r\n  outConfirm();\r\n}\r\n\r\nvoid setup() {\r\n\r\n  \/\/\u5c06DA\u8f6c\u6362\u5668\u7528\u7684\u5f15\u811a\u521d\u59cb\u5316\r\n  pinMode(LD, OUTPUT);\r\n  pinMode(CLK, OUTPUT);\r\n  pinMode(DI, OUTPUT);\r\n  digitalWrite(LD, LOW);\r\n}\r\n\r\nvoid loop() {\r\n  int i;\r\n\r\n  \/\/\u8f93\u51fa\u952f\u9f7f\u6ce2\r\n  for (i = 0; i <= 255; i++) {\r\n    operationOut(i, 1); \/\/\u56fa\u5b9a\u4e3aAO1\u8f93\u51fa\r\n  }\r\n}\r\n<\/pre>\n
    \u8fd9\u4e2a\u8349\u56fe\u66f4\u6ce8\u91cd\u6613\u4e8e\u7406\u89e3\uff0c\u6240\u4ee5\u6548\u7387\u5e76\u4e0d\u662f\u975e\u5e38\u597d\uff0c\u8f6c\u6362\u5468\u671f\u6709\u70b9\u6162\u3002<\/p>\n
    \u4e0b\u9762\u5bf9\u8349\u56fe\u4e2d\u7684\u6bcf\u5757\u5de5\u4f5c\u9010\u4e00\u8fdb\u884c\u89e3\u91ca\u3002<\/p>\n
    #define LD 8\r\n#define CLK 7\r\n#define DI 6\r\n\r\nboolean D[12];\r\n<\/pre>\n
    \u9996\u5148\uff0c\u5c06\u8981\u8fde\u63a5\u7684D\/A\u8f6c\u6362\u5668\u7684\u5f15\u811a\u548cArduino\u7684\u5f15\u811a\u7f16\u53f7\u5efa\u7acb\u5173\u8054\u3002LD\u662f\u5f15\u811a8\uff0cCLK\u662f\u5f15\u811a7\uff0cDI\u662f\u5f15\u811a6\u3002\u63a5\u4e0b\u6765\uff0c\u5b9a\u4e49\u4e86\u6570\u7ec4D\uff0c\u7528\u6765\u4fdd\u5b58\u8981\u53d1\u9001\u5230DI\u5f15\u811a\u768412bit\u4fe1\u606f\u3002\u4e3a\u4e86\u4fdd\u5b5812bit\u5206\u522b\u5bf9\u5e94\u76840\/1\uff0c\u9700\u898112\u4e2a\u6570\u7ec4\u5143\u7d20\u3002\u7531\u4e8e\u53ea\u4fdd\u5b580\u548c1\uff0c\u6240\u4ee5\u6211\u4eec\u4f7f\u7528boolean\u6570\u636e\u7c7b\u578b\u3002<\/p>\n
    void setup() {\r\n\r\n  \/\/\u5c06DA\u8f6c\u6362\u5668\u7528\u7684\u5f15\u811a\u521d\u59cb\u5316\r\n  pinMode(LD, OUTPUT);\r\n  pinMode(CLK, OUTPUT);\r\n  pinMode(DI, OUTPUT);\r\n  digitalWrite(LD, LOW);\r\n}\r\n<\/pre>\n
    \u901a\u8fc7setup\u51fd\u6570\u6765\u8bbe\u7f6e\u8981\u4f7f\u7528\u7684\u5f15\u811a\u7684\u5de5\u4f5c\u3002\u4e09\u4e2a\u5f15\u811a\u90fd\u7528\u4e8e\u8f93\u51fa\u3002\u5728setup\u51fd\u6570\u4e2d\u5c06LD\u5f15\u811a\u6307\u5b9a\u4e3aLOW\uff0c\u65e8\u5728\u9632\u6b62\u5176\u72b6\u6001\u4e0d\u7a33\u5b9a\u3002<\/p>\n
    void loop() {\r\n  int i;\r\n\r\n  \/\/\u8f93\u51fa\u952f\u9f7f\u6ce2\r\n  for (i = 0; i <= 255; i++) {\r\n    operationOut(i, 1); \/\/AO1\u51fa\u529b\r\n  }\r\n}\r\n<\/pre>\n
    \u901a\u8fc7loop\u51fd\u6570\uff0c\u5c06\u201c\u8981\u8f93\u51fa\u7684\u6570\u636e\u201d\u548c\u201c\u7aef\u53e3\u7f16\u53f7\u201d\u4f20\u9012\u7ed9operationOut\u51fd\u6570\uff08\u8be5\u51fd\u6570\u7528\u6765\u5c06\u4fe1\u53f7\u8f93\u51fa\u81f3\u540e\u8ff0\u7684D\/A\u8f6c\u6362\u5668\uff09\u3002\u5bf9\u4e8e\u201c\u8981\u8f93\u51fa\u7684\u6570\u636e\u201d\uff0c\u4f7f\u7528for\u8bed\u53e5\u8bbe\u7f6e\u4e86\u4ece0\u5230255\u9010\u6b65\u589e\u52a0\u7684\u503c\u3002\u7531\u4e8e\u6bcf\u6b21\u8c03\u7528loop\u51fd\u6570\u65f6\u90fd\u4f1a\u91cd\u590d\u8be5\u5de5\u4f5c\uff0c\u56e0\u6b64\u8f93\u51fa\u7684\u7535\u538b\u662f\u201c\u952f\u9f7f\u6ce2\u201d\u3002<\/p>\n
    int operationOut(int value, int ch)\r\n{\r\n  chSelect(ch);\r\n  binary(value);\r\n  outConfirm();\r\n}\r\n<\/pre>\n
    \u901a\u8fc7operationOut\u51fd\u6570\u5df2\u5c06\u53c2\u6570\u4f20\u9012\u7ed9\u6267\u884c\u5b9e\u9645\u5904\u7406\u7684\u51fd\u6570\u3002\u7136\u540e\u8c03\u7528\u4e09\u4e2a\u51fd\u6570\uff1a\u5c06\u7aef\u53e3\u7f16\u53f7\uff08\u9ad84\u4f4d\uff09\u6269\u5c55\u4e3a0\u62161\u7684chSelect\u51fd\u6570\u3001\u5c06\u8981\u8f93\u51fa\u7684\u6570\u636e\uff08\u4f4e8\u4f4d\uff09\u6269\u5c55\u4e3a0\u62161\u7684binary\u51fd\u6570\u3001\u4ee5\u53ca\u5c06\u6570\u7ec4D\u7684\u5185\u5bb9\u4f20\u8f93\u7ed9D\/A\u8f6c\u6362\u5668\u7684outConfirm\u51fd\u6570\u3002<\/p>\n
    int chSelect(int outPin)\r\n{\r\n  int i;\r\n  if (outPin == 1) {\r\n    for (i = 8; i < 12; i++)\r\n    {\r\n      D[i] = LOW;\r\n    }\r\n  }\r\n  else if (outPin == 2)\r\n  {\r\n    D[8] = HIGH;\r\n    for (i = 9; i < 12; i++)\r\n    {\r\n      D[i] = LOW;\r\n    }\r\n  }\r\n}\r\n<\/pre>\n
    \u901a\u8fc7chSelect\u51fd\u6570\u8fdb\u884c\u9ad84\u4f4d\u7684\u64cd\u4f5c\u3002\u5f53\u4ece\u53c2\u6570\u4e2d\u6307\u5b9a\u7aef\u53e3\u7f16\u53f71\u65f6\uff0c0\u88ab\u4fdd\u5b58\u5728\u6570\u7ec4D\u7684\u5143\u7d208\u5230\u5143\u7d2011\u4e2d\u3002\u5f53\u4ece\u53c2\u6570\u4e2d\u6307\u5b9a\u7aef\u53e3\u7f16\u53f72\u65f6\uff0c1\u88ab\u4fdd\u5b58\u5728\u6570\u7ec4D\u7684\u5143\u7d208\u4e2d\uff0c0\u88ab\u4fdd\u5b58\u5728\u5143\u7d209\u5230\u5143\u7d2011\u4e2d\u3002<\/p>\n
    int binary(int out)\r\n{\r\n  int i = 0;\r\n  for (i = 0; i < 8; i++) {\r\n    D[i] = out % 2;\r\n    out = out \/ 2;\r\n  }\r\n}\r\n<\/pre>\n
    \u901a\u8fc7binary\u51fd\u6570\u5c06\u4f20\u6765\u7684\u5341\u8fdb\u5236\u6570\u8f6c\u6362\u4e3a8\u4f4d\u4e8c\u8fdb\u5236\u6570\uff0c\u5e76\u5c06\u5176\u4fdd\u5b58\u5728D[0]\u5230D[7]\u4e2d\u3002\u5728\u4e8c\u8fdb\u5236\u8f6c\u6362\u4e2d\u591a\u7528\u8be5\u6280\u672f\u3002\u901a\u8fc7for\u8bed\u53e5\u91cd\u590d\u6267\u884c\u201c\u6c42\u9664\u4ee52\u540e\u7684\u4f59\u6570\uff08\u6700\u4f4e\u4f4d\u662f0\u8fd8\u662f1\uff1f\uff09\u3001\u9664\u4ee52\uff08\u820d\u53bb\u6700\u4f4e\u4f4d\uff09\u201d\uff0c\u4ee5\u201c\u4ece\u6700\u4f4e\u4f4d\u4f9d\u6b21\u8f6c\u6362\u4e3a\u4e8c\u8fdb\u5236\u6570\u201d\u3002<\/p>\n
    void outConfirm()\r\n{\r\n  int i;\r\n  for (i = 11; i >= 0; i--)\r\n  {\r\n    digitalWrite(DI, D[i]);\r\n    digitalWrite(CLK, HIGH);\r\n    digitalWrite(DI, LOW);\r\n    digitalWrite(CLK, LOW);\r\n  }\r\n  digitalWrite(LD, HIGH);\r\n  digitalWrite(LD, LOW);\r\n}\r\n<\/pre>\n
    \u901a\u8fc7\u6700\u540e\u7684outConfirm\u51fd\u6570\uff0c\u5c06\u6570\u7ec4D\u4e2d\u7684\u6570\u636e\u4f20\u8f93\u7ed9D\/A\u8f6c\u6362\u5668\u5e76\u8f93\u51fa\u6a21\u62df\u4fe1\u53f7\u3002
    \n\u6570\u7ec4D\u4e2d0\/1\u7684\u6392\u5217\u987a\u5e8f\u4e0e\u4f20\u8f93\u7ed9D\/A\u8f6c\u6362\u5668\u65f6\u7684\u987a\u5e8f\u76f8\u53cd\u3002\u56e0\u6b64\uff0cfor\u8bed\u53e5\u4ece11\u52300\u6309\u964d\u5e8f\u5faa\u73af\uff0c\u5e76\u4ee5\u6b63\u786e\u7684\u987a\u5e8f\u8f93\u51fa\u6570\u7ec4D\u7684\u5185\u5bb9\u3002\u5728\u5faa\u73af\u4e2d\uff0c\u4e5f\u540c\u65f6\u6267\u884cCLK\u5904\u7406\u3002for\u8bed\u53e5\u7ed3\u675f\u540e\uff0c\u5f53\u52a0\u4e0aLD\u5f15\u811a\u7684\u4e0a\u5347\u6cbf\u4fe1\u53f7\u65f6\uff0c\u5c06\u4eceD\/A\u8f6c\u6362\u5668\u8f93\u51fa\u4e0e\u4f20\u8f93\u6570\u636e\u5bf9\u5e94\u7684\u6a21\u62df\u4fe1\u53f7\u3002<\/p>\n
    \u4e0b\u9762\u662f\u7528\u793a\u6ce2\u5668\u89c2\u6d4b\u5230\u7684\u6bcf\u4e2a\u70b9\u7684\u7535\u538b\u56fe\u3002<\/p>\n
    <\/p>\n
    \u7528Arduino\u4f7fBH2219FVM\u5de5\u4f5c\u65f6\u7684\u6ce2\u5f62\uff0c\u8f93\u51fa\u4e86\u6765\u81eaD\/A\u8f6c\u6362\u5668\u8f93\u51fa\u5f15\u811a\u768419Hz\u952f\u9f7f\u6ce2\u3002<\/p>\n
     <\/p>\n
    <\/p>\n
    \u67e5\u770bDI\u5f15\u811a\uff08\u4e0a\uff09\u548cCLK\u5f15\u811a\uff08\u4e0b\uff09\u7684\u6ce2\u5f62\u3002\u53ef\u4ee5\u770b\u5230DI\u5f15\u811a\u662f\u5982\u4f55\u6839\u636eCLK\u7684\u52a8\u4f5c\u8fdb\u884cON\/OFF\u7684\u3002<\/p>\n
     <\/p>\n
    <\/p>\n
    \u5c06\u6ce2\u5f62\u653e\u5927\uff0c\u53ef\u4ee5\u770b\u5230\u4fe1\u53f7\u662f\u5982\u4f55\u88ab\u53d1\u9001\u7684\u3002\u56fe\u50cf\u663e\u793a180\u7684\u4fe1\u53f7\u88ab\u53d1\u9001\u5230D\/A\u8f6c\u6362\u5668\u7684AO1\u5f15\u811a\u3002\u6839\u636e\u8be5\u4fe1\u53f7\u8f93\u51fa3.52V\u7684\u7535\u538b\u3002<\/p>\n
     <\/p>\n
    \"control-voltage-with-da-converter-10\"<\/p>\n
     <\/p>\n
    4. \u8fde\u63a5\u8bbe\u5907\u6570\u5b57\u548c\u4eba\u7c7b\u6a21\u62df\u7684\u6865\u6881\u2014\u2014D\/A\u8f6c\u6362\u5668<\/h2>\n
    \u968f\u7740\u6570\u5b57\u5316\u7684\u8fdb\u6b65\uff0cD\/A\u8f6c\u6362\u5668\u88ab\u5e7f\u6cdb\u5e94\u7528\u4e8eAV\u8bbe\u5907\u3001\u901a\u4fe1\u8bbe\u5907\u3001\u7535\u673a\u9a71\u52a8\u8bbe\u5907\u7b49\u5404\u79cd\u4ea7\u54c1\u4e2d\u3002<\/p>\n
    \u901a\u8fc7\u5728Arduino\u4e2d\u589e\u52a0\u4f7f\u7528\u4e86D\/A\u8f6c\u6362\u5668\u7684\u6a21\u62df\u4fe1\u53f7\u5904\u7406\u529f\u80fd\uff0c\u4f7f\u5176\u80fd\u591f\u5728\u5404\u79cd\u573a\u666f\u4e2d\u5927\u663e\u8eab\u624b<\/p>\n
    \u5728\u672c\u6587\u7684\u6848\u4f8b\u4e2d\uff0c\u6570\u636e\u4f20\u8f93\u65b9\u5f0f\u53ef\u80fd\u770b\u8d77\u6765\u6709\u70b9\u590d\u6742\uff0c\u4f46\u5982\u679c\u4f7f\u7528\u652f\u6301I2C\u6216SPI\u7b49\u901a\u7528\u6570\u636e\u4f20\u8f93\u6807\u51c6\u7684D\/A\u8f6c\u6362\u5668\uff0c\u7528\u8d77\u6765\u5c31\u66f4\u8f7b\u677e\u3001\u66f4\u7b80\u5355\u4e86\u3002\u5728\u60a8\u9700\u8981\u6a21\u62df\u8f93\u51fa\u7684\u65f6\u5019\uff0c\u4e0d\u59a8\u5c1d\u8bd5\u4e00\u4e0bD\/A\u8f6c\u6362\u5668\uff01<\/p>\n
    \n
    \"DevicePlus<\/div>\n
    \n
    DevicePlus \u7f16\u8f91\u56e2\u961f<\/h5>\n
    \n
    Device Plus\u9002\u7528\u4e8e\u6240\u6709\u70ed\u7231\u7535\u5b50\u548c\u673a\u7535\u4e00\u4f53\u5316\u7684\u53d1\u70e7\u53cb\uff0c\u76ee\u6807\u662f\u6210\u4e3a\u6df1\u53d7\u8fd9\u4e9b\u53d1\u70e7\u53cb\u559c\u7231\u7684\u7f51\u7ad9\u3002<\/p>\n
    https:\/\/deviceplus.jp<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"Arduino\u5177\u6709\u8f93\u51fa\u6570\u5b57\u4fe1\u53f7\u548cPWM\u4fe1\u53f7\u7b49\u529f\u80fd\uff0c\u4f46\u4e0d\u5177\u5907\u8f93\u51fa\u6a21\u62df\u4fe1\u53f7\u7684\u529f\u80fd\u3002\u8fd9\u6b21\uff0c\u6211\u4eec\u5c06\u4e3a\u60a8\u4ecb\u7ecd\u80fd\u591f\u5b9e\u73b0\u8fd9\u79cd\u6a21\u62df\u4fe1\u53f7\u8f93\u51fa\u7684D\/A\u8f6c\u6362\u5668\u3002   \u76ee\u5f55 \u4ec0\u4e48\u662fD\/A\u8f6c\u6362\u5668\uff1f \u5982\u4f55\u901a\u8fc7Arduino\u4f7f\u7528D\/A\u8f6c\u6362\u5668 […]","protected":false},"author":4,"featured_media":22704,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1130],"tags":[1971,2067],"class_list":["post-22703","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-arduino","tag-arduino","tag-d-a"],"acf":[],"wps_subtitle":"","_links":{"self":[{"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/posts\/22703","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/comments?post=22703"}],"version-history":[{"count":18,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/posts\/22703\/revisions"}],"predecessor-version":[{"id":22731,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/posts\/22703\/revisions\/22731"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/media\/22704"}],"wp:attachment":[{"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/media?parent=22703"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/categories?post=22703"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/tags?post=22703"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}