reverting version

include/Bus/BusScanner.h

@@ -0,0 +1,56 @@
+#pragma once
+
+#include <Arduino.h>
+
+class BusScanner {
+   public:
+    BusScanner(const char* tag, String& out, size_t tries) : _found{0},
+                                                             _tries{tries},
+                                                             _out{&out} {
+        _tag = new char(strlen(tag) + 1);
+        strcpy(_tag, tag);
+    }
+
+    void scan() {
+        init();
+        bool res;
+        do {
+            res = syncScan();
+        } while (!res && --_tries);
+
+        if (!_found) {
+            addResult("не найдено");
+        }
+    }
+
+    const char* tag() {
+        return _tag;
+    }
+
+   protected:
+    virtual void init(){};
+
+    virtual boolean syncScan() = 0;
+
+   protected:
+    void addResult(const String& str) {
+        _out->concat(str);
+    }
+
+    void addResult(uint8_t addr, boolean last = true) {
+        _found++;
+        String str = "0x";
+        if (addr < 16) {
+            str += "0";
+        }
+        str += String(addr, HEX);
+        str += !last ? ", " : ", ";
+        addResult(str);
+    };
+
+   private:
+    char* _tag;
+    size_t _found;
+    size_t _tries;
+    String* _out;
+};