fit the memory usage for esp32c3

main/boards/common/board.cc

@@ -1,5 +1,6 @@
 #include "board.h"
 #include "system_info.h"
+#include "display/no_display.h"
 
 #include <esp_log.h>
 #include <esp_ota_ops.h>
@@ -11,6 +12,12 @@ bool Board::GetBatteryLevel(int &level, bool& charging) {
     return false;
 }
 
+Display* Board::GetDisplay() {
+    static NoDisplay display;
+    return &display;
+}
+
+
 std::string Board::GetJson() {
     /* 
         {
@@ -101,4 +108,4 @@ std::string Board::GetJson() {
     // Close the JSON object
     json += "}";
     return json;
-}
+}