small fixes for other platforms

override `flush()` on output base
jsonFmt remove stream operator usage
`MENU_USERAM` not mandatory for non avr devices (disabled by USE_PGM)

Author: neu-rah

src/macros.h

@@ -6,7 +6,9 @@
 //////////////////////////////////////////////////////////////////////////////
 // memory macros ------------------------------------------------------------
 #ifndef __AVR_ARCH__
-  #define MENU_USERAM
+  #ifndef USE_PGM
+    #define MENU_USERAM
+  #endif
 #endif
 #if defined(ESP8266)
   #define MENU_ASYNC

src/menuIO/jsonFmt.hpp

@@ -34,11 +34,20 @@
     #endif
     int cursorCtrl=0;
     void jsonOptions(menuOut& o,navNode &nav,menuNode& node,idx_t idx) {
-      o<<",\"options\":[";
+      // o<<",\"options\":[";
+      o.print(",\"options\":[");
       // o<<node.sz();
-      for(idx_t n=0;n<node.sz();n++)
-        o<<(n?",":"")<<"\""<<node[n]<<"\"";
-      o<<"],\"sel\":\""<<((menuVariantBase*)&node)->sync()<<"\"";
+      for(idx_t n=0;n<node.sz();n++) {
+        o.print(n?",":"");
+        o.print("\"");
+        o.print(node[n].getText());
+        o.print("\"");
+        // o<<(n?",":"")<<"\""<<node[n]<<"\"";
+      }
+      // o<<"],\"sel\":\""<<((menuVariantBase*)&node)->sync()<<"\"";
+      o.print("],\"sel\":\"");
+      o.print(((menuVariantBase*)&node)->sync());
+      o.print("\"");
     }
   };
 #endif

src/menuIo.h

@@ -18,6 +18,7 @@
         virtual bool fieldMode() const;
         inline void fieldOn() {setFieldMode(true);}
         inline void fieldOff() {setFieldMode(false);}
+        void flush() {}
     };
 
     class noInput:public menuIn {