feat: 前端七段数码管添加数字孪生功能

src/utils/Common.ts

@@ -59,3 +59,12 @@ export function formatDate(date: Date | string) {
     minute: "2-digit",
   });
 }
+
+export function base64ToArrayBuffer(base64: string) {
+  var binaryString = atob(base64);
+  var bytes = new Uint8Array(binaryString.length);
+  for (var i = 0; i < binaryString.length; i++) {
+    bytes[i] = binaryString.charCodeAt(i);
+  }
+  return bytes.buffer;
+}