{"id":936,"date":"2025-10-09T08:51:41","date_gmt":"2025-10-09T00:51:41","guid":{"rendered":"https:\/\/www.640629.xyz\/?p=936"},"modified":"2025-10-16T07:54:06","modified_gmt":"2025-10-15T23:54:06","slug":"%e4%ba%8c%e7%b6%ad%e9%99%a3%e5%88%97%e3%80%81select-case%e6%a2%9d%e4%bb%b6%e5%88%a4%e6%96%b7%e3%80%81rgb-led%e9%80%b2%e9%9a%8e%e6%8e%a7%e5%88%b6","status":"publish","type":"post","link":"https:\/\/www.640629.xyz\/?p=936","title":{"rendered":"RGB LED\u9032\u968e\u63a7\u5236\u3001\u4e8c\u7dad\u9663\u5217\u3001switch case\u689d\u4ef6\u5224\u65b7"},"content":{"rendered":"\n

\u96fb\u8def\u63a5\u7dda\u5716<\/p>\n\n\n

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

\u5b9a\u7fa9R,G,B\u63a5\u8173\u4f4d\u7f6e\uff1a<\/p>\n\n\n\n

int rgbPin[3] = {21,22,23}; \/\/ R,G,B\u63a5\u8173\n\/\/ R\uff1a rgbPin[0] --> 21\n\/\/ G\uff1a rgbPin[1] --> 22\n\/\/ B\uff1a rgbPin[2] --> 23<\/code><\/pre>\n\n\n\n
\u5ba3\u544a\u4e00\u500b2\u7dad\u9663\u5217\uff0c\u540d\u7a31\u70bacolor\uff0c\u7528\u4f86\u5b9a\u7fa9R,G,B\u7684\u984f\u8272(\u67095\u500b\u5143\u7d20\uff0c\u6bcf\u500b\u5143\u7d20\u67093\u7b46\u8cc7\u6599)<\/p>\n\n\n\n
int color[5][3] = {{0,0,0},{255,255,255},{255,0,0},{0,255,0},{0,0,255}};  \/\/ {Black, White, Red, Green, Blue}<\/code><\/pre>\n\n\n\n
\u70ba\u4e86\u95b1\u8b80\u65b9\u4fbf\uff0c\u53ef\u5c07\u9663\u5217\u5167\u7684\u5143\u7d20\u5167\u5bb9\u5206\u958b\u5217\u51fa\uff1a<\/p>\n\n\n\n
int color[5][3] =\n{\n{0,0,0},            \/\/ 0.Black\n{255,255,255},      \/\/ 1.White\n{255,0,0},          \/\/ 2.Red\n{0,255,0},          \/\/ 3.Green\n{0,0,255}           \/\/ 4.Blue\n};\n\/\/ 0.Black\uff1a color[0][] --> {0,0,0}\n  \/\/ color[0][0] --> 0\n  \/\/ color[0][1] --> 0\n  \/\/ color[0][2] --> 0\n\/\/ 1.White\uff1a color[1][] --> {255,255,255}\n  \/\/ color[1][0] --> 255\n  \/\/ color[1][1] --> 255\n  \/\/ color[1][2] --> 255\n\/\/ 2.Red\uff1a color[2][] --> {255,0,0}\n  \/\/ color[2][0] --> 255\n  \/\/ color[2][1] --> 0\n  \/\/ color[2][2] --> 0\n\/\/ 3.Green\uff1a color[3][] --> {0,255,0}\n  \/\/ color[3][0] --> 0\n  \/\/ color[3][1] --> 255\n  \/\/ color[3][2] --> 0\n\/\/ 4.Blue\uff1a color[4][] --> {0,0,255} Blue\n  \/\/ color[4][0] --> 0\n  \/\/ color[4][1] --> 0\n  \/\/ color[4][2] --> 255<\/code><\/pre>\n\n\n\n
\u82e5\u539fRGB LED\u71c8\u7684\u984f\u8272\u6539\u62102\u7dad\u9663\u5217\u8f38\u51fa\uff0c\u53ef\u53c3\u8003\u4e0b\u5217\u7a0b\u5f0f\u78bc\uff1a<\/p>\n\n\n\n
\/\/ 0.Black\nanalogWrite(rgbPin[0],color[0][0]);  \/\/ analogWrite(R, 0);\nanalogWrite(rgbPin[1],color[0][1]);  \/\/ analogWrite(G, 0);\nanalogWrite(rgbPin[2],color[0][2]);  \/\/ analogWrite(B, 0);\n\/\/ 1.White\nanalogWrite(rgbPin[0],color[1][0]);  \/\/ analogWrite(R, 255);\nanalogWrite(rgbPin[1],color[1][1]);  \/\/ analogWrite(G, 255);\nanalogWrite(rgbPin[2],color[1][2]);  \/\/ analogWrite(B, 255);\n\/\/ 2.Red\nanalogWrite(rgbPin[0],color[2][0]);  \/\/ analogWrite(R, 255);\nanalogWrite(rgbPin[1],color[2][1]);  \/\/ analogWrite(G, 0);\nanalogWrite(rgbPin[2],color[2][2]);  \/\/ analogWrite(B, 0);\n\/\/ 3.Green\nanalogWrite(rgbPin[0],color[3][0]);  \/\/ analogWrite(R, 0);\nanalogWrite(rgbPin[1],color[3][1]);  \/\/ analogWrite(G, 255);\nanalogWrite(rgbPin[2],color[3][2]);  \/\/ analogWrite(B, 0);\n\/\/ 4.Blue\nanalogWrite(rgbPin[0],color[4][0]);  \/\/ analogWrite(R, 0);\nanalogWrite(rgbPin[1],color[4][1]);  \/\/ analogWrite(G, 0);\nanalogWrite(rgbPin[2],color[4][2]);  \/\/ analogWrite(B, 255);<\/code><\/pre>\n\n\n\n
\u82e5\u8981\u986f\u793a\u9663\u5217\u4e2d\u67d0\u500b\u984f\u8272\uff0c\u53ef\u5beb\u6210\u526f\u7a0b\u5f0f\uff0c\u5c07\u9663\u5217\u7684\u7d22\u5f15\u503c\u4ee3\u5165\u5373\u53ef\uff1a<\/p>\n\n\n\n
void show_color(int x)\n{\n  for(int i=0; i<=2; i++)\n  {\n    analogWrite(rgbPin[i],color[x][i]);\n  }  \n}<\/code><\/pre>\n\n\n\n
\u4f8b\u5982\uff1a<\/p>\n\n\n\n
\/\/ 0.Black\nshow_color(0);\n\/\/ 1.White\nshow_color(1);\n\/\/ 2.Red\nshow_color(2);\n\/\/ 3.Green\nshow_color(3);\n\/\/ 4.Blue\nshow_color(4);<\/code><\/pre>\n\n\n\n
\u82e5\u8981\u96a8\u6a5f\u7522\u751f\u4e00\u500b\u984f\u8272\uff0c\u4ea6\u53ef\u5beb\u6210\u526f\u7a0b\u5f0f\u5982\u4e0b\uff1a<\/p>\n\n\n\n
\/*\n  \u96a8\u6a5f\u7522\u751f\u4efb\u610f\u984f\u8272(\u7531 r, g, b \u90193\u500b\u53c3\u6578\u81ea\u7531\u7d44\u5408)\n  r = random(256);    \/\/ \u96a8\u6a5f\u7522\u751f0~255\u7684\u6574\u6578\uff0c\u5132\u5b58\u5230 r\n  g = random(256);    \/\/ \u96a8\u6a5f\u7522\u751f0~255\u7684\u6574\u6578\uff0c\u5132\u5b58\u5230 g\n  b = random(256);    \/\/ \u96a8\u6a5f\u7522\u751f0~255\u7684\u6574\u6578\uff0c\u5132\u5b58\u5230 b\n  analogWrite(R, r);  \/\/ r: 0 ~ 255\n  analogWrite(G, g);  \/\/ g: 0 ~ 255\n  analogWrite(B, b);  \/\/ b: 0 ~ 255\n*\/\n\nvoid random_color()\n{\n  for(int i=0; i<=2; i++)\n  {\n    analogWrite(rgbPin[i],random(256));\n  }\n}<\/code><\/pre>\n\n\n\n
switch … case \u689d\u4ef6\u5224\u65b7  \u53c3\u8003\u8aaa\u660e<\/a><\/p>\n\n\n\n
switch(count)\n{\n  case(1):\n    Serial.println(\"case 1.\");\n    break;\n  case(2):\n    Serial.println(\"case 2.\");\n    break;              \n  case(3):\n    Serial.println(\"case 3.\");\n    break;\n  case(4):\n    Serial.println(\"case 4.\");\n    break;\n  default:        \/\/ \u4ee5\u4e0a\u7686\u975e\n    Serial.println(\"case else.\");\n    break; \n}<\/code><\/pre>\n\n\n\n
\u4f5c\u696d\u7df4\u7fd2\uff1a<\/p>\n\n\n\n
    \n
  • \u958b\u6a5f\u5f8c\uff0c\u6bcf\u9593\u96940.5\u79d2\u4f9d\u5e8f\u96a8\u6a5f\u986f\u793a5\u7a2e\u4e0d\u540c\u984f\u8272\u4e00\u6b21\u3002<\/li>\n\n\n\n
  • \u6bcf\u6309\u4e00\u4e0b\u6309\u9215\u958b\u95dc\uff0c\u4f9d\u5e8f\u5faa\u74b0\u986f\u793a\u4e0b\u5217\u72c0\u614b\uff1a\n
      \n
    • 0.Black  {0, 0, 0}<\/li>\n\n\n\n
    • 1.White  {255, 255, 255}<\/li>\n\n\n\n
    • 2.Red  {255, 0, 0}<\/li>\n\n\n\n
    • 3.Green  {0, 255, 0}<\/li>\n\n\n\n
    • 4.Blue {0, 0, 255}<\/li>\n\n\n\n
    • 5.Yellow  {255, 255, 0}<\/li>\n\n\n\n
    • 6.Orange  {255, 127, 0}<\/li>\n\n\n\n
    • 7.Purple  {160, 32, 240}<\/li>\n\n\n\n
    • 8.Brown  {128, 42, 42}<\/li>\n\n\n\n
    • 9.Pink  {255, 0, 255}<\/li>\n<\/ul>\n<\/li>\n\n\n\n
    • \u5404\u984f\u8272\u7684\u72c0\u614b\u5fc5\u9808\u986f\u793a\u5728\u76e3\u770b\u8996\u7a97\u4e0a\u3002<\/li>\n\n\n\n
    • \u5728Wokwi\u7db2\u7ad9\u4e0a\u9032\u884c\u6a21\u64ec\uff0c\u4e26\u5b8c\u6210\u5be6\u9ad4\u63a5\u7dda\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"
      \u96fb\u8def\u63a5\u7dda\u5716 \u5b9a\u7fa9R,G,B\u63a5\u8173\u4f4d\u7f6e\uff1a \u5ba3\u544a\u4e00\u500b2\u7dad\u9663\u5217\uff0c\u540d\u7a31\u70bacolor\uff0c\u7528\u4f86\u5b9a\u7fa9R,G,B\u7684\u984f\u8272(\u67095\u500b\u5143\u7d20<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-936","post","type-post","status-publish","format-standard","hentry","category-programming"],"_links":{"self":[{"href":"https:\/\/www.640629.xyz\/index.php?rest_route=\/wp\/v2\/posts\/936","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.640629.xyz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.640629.xyz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.640629.xyz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.640629.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=936"}],"version-history":[{"count":35,"href":"https:\/\/www.640629.xyz\/index.php?rest_route=\/wp\/v2\/posts\/936\/revisions"}],"predecessor-version":[{"id":2144,"href":"https:\/\/www.640629.xyz\/index.php?rest_route=\/wp\/v2\/posts\/936\/revisions\/2144"}],"wp:attachment":[{"href":"https:\/\/www.640629.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=936"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.640629.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=936"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.640629.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=936"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}