Bootloader SHA fixes, 0.15 edition

wled00/fcn_declare.h

@@ -410,6 +410,14 @@ void enumerateLedmaps();
 uint8_t get_random_wheel_index(uint8_t pos);
 float mapf(float x, float in_min, float in_max, float out_min, float out_max);
 
+#ifndef ESP8266
+inline size_t getFreeHeapSize() { return heap_caps_get_free_size(MALLOC_CAP_INTERNAL | MALLOC_CAP_8BIT); } // returns free heap (ESP.getFreeHeap() can include other memory types)
+inline size_t getContiguousFreeHeap() { return heap_caps_get_largest_free_block(MALLOC_CAP_INTERNAL | MALLOC_CAP_8BIT); } // returns largest contiguous free block
+#else
+inline size_t getFreeHeapSize() { return ESP.getFreeHeap(); } // returns free heap
+inline size_t getContiguousFreeHeap() { return ESP.getMaxFreeBlockSize(); } // returns largest contiguous free block
+#endif
+
 void handleBootLoop();   // detect and handle bootloops
 #ifndef ESP8266
 void bootloopCheckOTA(); // swap boot image if bootloop is detected instead of restoring config