Missing files in commit

src/lib/shared.hpp

@@ -1,7 +1,33 @@
 #pragma once
 
 #include <Adafruit_MCP23X17.h>
+#include <ArduinoJson.h>
 #include <Preferences.h>
 
 extern Adafruit_MCP23X17 mcp;
 extern Preferences preferences;
+
+const PROGMEM int SCREEN_BLOCK_HEIGHT = 0;
+const PROGMEM int SCREEN_MSCW_TIME = 1;
+const PROGMEM int SCREEN_BTC_TICKER = 2;
+const PROGMEM int SCREEN_TIME = 3;
+const PROGMEM int SCREEN_HALVING_COUNTDOWN = 4;
+const PROGMEM int SCREEN_COUNTDOWN = 98;
+const PROGMEM int SCREEN_CUSTOM = 99;
+const PROGMEM int screens[5] = { SCREEN_BLOCK_HEIGHT, SCREEN_MSCW_TIME, SCREEN_BTC_TICKER, SCREEN_TIME, SCREEN_HALVING_COUNTDOWN };
+
+struct SpiRamAllocator {
+  void* allocate(size_t size) {
+    return heap_caps_malloc(size, MALLOC_CAP_SPIRAM);
+  }
+
+  void deallocate(void* pointer) {
+    heap_caps_free(pointer);
+  }
+
+  void* reallocate(void* ptr, size_t new_size) {
+    return heap_caps_realloc(ptr, new_size, MALLOC_CAP_SPIRAM);
+  }
+};
+
+using SpiRamJsonDocument = BasicJsonDocument<SpiRamAllocator>;