fix warning thanks to adbb9fb9bd

inc/drivers/MicroBitIO.h

@@ -40,8 +40,8 @@ class MicroBitIO
 {
     public:
 
-	MicroBitPin			 pin[0];
-	MicroBitPin          P0;
+	  MicroBitPin	 *const pin;
+	  MicroBitPin          P0;
     MicroBitPin          P1;
     MicroBitPin          P2;
     MicroBitPin          P3;

inc/drivers/MicroBitStorage.h

@@ -46,11 +46,14 @@ struct KeyValuePair
     uint8_t value[MICROBIT_STORAGE_VALUE_SIZE];
 };
 
-struct KeyValueStore
+struct KeyValueStoreData
 {
     uint32_t magic;
     uint32_t size;
+};
 
+struct KeyValueStore : KeyValueStoreData
+{
     KeyValueStore(uint32_t magic, uint32_t size)
     {
         this->magic = magic;

source/core/MicroBitHeapAllocator.cpp

@@ -340,8 +340,8 @@ void microbit_free(void *mem)
         if(SERIAL_DEBUG) SERIAL_DEBUG->printf("free:   %p\n", mem);
 #endif
     // Sanity check.
-	if (memory == NULL)
-       return;
+	  if (memory == NULL)
+        return;
 
     // If this memory was created from a heap registered with us, free it.
     for (int i=0; i < heap_count; i++)
@@ -349,11 +349,11 @@ void microbit_free(void *mem)
         if(memory > heap[i].heap_start && memory < heap[i].heap_end)
         {
             // The memory block given is part of this heap, so we can simply
-	        // flag that this memory area is now free, and we're done.
+	          // flag that this memory area is now free, and we're done.
             if (*cb == 0 || *cb & MICROBIT_HEAP_BLOCK_FREE)
                 microbit_panic(MICROBIT_HEAP_ERROR);
 
-	        *cb |= MICROBIT_HEAP_BLOCK_FREE;
+	          *cb |= MICROBIT_HEAP_BLOCK_FREE;
             return;
         }
     }
@@ -427,4 +427,4 @@ int microbit_create_heap(uint32_t start, uint32_t end)
     return MICROBIT_OK;
 }
 
-#endif
+#endif

source/drivers/MicroBitIO.cpp

@@ -47,6 +47,7 @@ MicroBitIO::MicroBitIO(int ID_P0, int ID_P1, int ID_P2,
                        int ID_P12,int ID_P13,int ID_P14,
                        int ID_P15,int ID_P16,int ID_P19,
                        int ID_P20) :
+    pin(&this->P0),
     P0 (ID_P0, MICROBIT_PIN_P0, PIN_CAPABILITY_ALL),             //P0 is the left most pad (ANALOG/DIGITAL/TOUCH)
     P1 (ID_P1, MICROBIT_PIN_P1, PIN_CAPABILITY_ALL),             //P1 is the middle pad (ANALOG/DIGITAL/TOUCH)
     P2 (ID_P2, MICROBIT_PIN_P2, PIN_CAPABILITY_ALL),             //P2 is the right most pad (ANALOG/DIGITAL/TOUCH)

source/drivers/MicroBitStorage.cpp

@@ -416,7 +416,7 @@ int MicroBitStorage::size()
     KeyValueStore store = KeyValueStore();
 
     //read our data!
-    memcpy(&store, flashBlockPointer, sizeof(KeyValueStore));
+    memcpy((KeyValueStoreData*)&store, flashBlockPointer, sizeof(KeyValueStoreData));
 
     //if we haven't used flash before, we need to configure it
     if(store.magic != MICROBIT_STORAGE_MAGIC)