TDBStore: Increase min pages to 14

Increase minimum page count from 10 to 14 based on further experiments
with features-storage-tests-kvstore-static_tests.

Author: Kyle Kearney

features/storage/kvstore/conf/kv_config.cpp

@@ -185,7 +185,7 @@ int _calculate_blocksize_match_tdbstore(BlockDevice *bd)
     }
 
     if (number_of_page < TDBStore::STORE_PAGES) {
-        tr_warning("KV Config: There are less than ten pages sectors - TDBStore will not work.");
+        tr_warning("KV Config: There are less than fourteen pages - TDBStore will not work.");
         return -1;
     }
 
@@ -581,9 +581,9 @@ int _create_internal_tdb(BlockDevice **internal_bd, KVStore **internal_tdb, bd_s
         return MBED_ERROR_FAILED_OPERATION ;
     }
 
-    //Check if TDBStore has at least 2 sectors or 10 pages.
+    //Check if TDBStore has at least 2 sectors or 14 pages.
     if (_calculate_blocksize_match_tdbstore(*internal_bd) != MBED_SUCCESS) {
-        tr_error("KV Config: Can not create TDBStore with less then 2 sectors or 10 pages.");
+        tr_error("KV Config: Can not create TDBStore with less then 2 sectors or 14 pages.");
         return MBED_ERROR_INVALID_ARGUMENT;
     }
 
@@ -749,9 +749,9 @@ int _storage_config_tdb_external_common()
         return MBED_ERROR_FAILED_OPERATION ;
     }
 
-    //Check that there is at least 2 sectors for the external TDBStore
+    //Check that there is at least 2 sectors or 14 pages for the external TDBStore
     if (_calculate_blocksize_match_tdbstore(kvstore_config.external_bd) != MBED_SUCCESS) {
-        tr_error("KV Config: Can not create TDBStore with less then 2 sectors or 10 pages.");
+        tr_error("KV Config: Can not create TDBStore with less then 2 sectors or 14 pages.");
         return MBED_ERROR_INVALID_SIZE;
     }
 

features/storage/kvstore/tdbstore/TDBStore.h

@@ -36,12 +36,12 @@ class TDBStore : public KVStore {
 
     static const uint32_t RESERVED_AREA_SIZE = 64;
 
-    // Use the last 2 sectors or 10 pages of flash for the TDBStore by default (whichever is larger)
+    // Use the last 2 sectors or 14 pages of flash for the TDBStore by default (whichever is larger)
     // For each area: must be a minimum of 1 page of reserved and 2 pages for master record
     /** Minimum number of internal flash sectors required for TDBStore */
     static const int STORE_SECTORS = 2;
     /** Minimum number of internal flash pages required for TDBStore */
-    static const int STORE_PAGES = 10;
+    static const int STORE_PAGES = 14;
 
     /**
      * @brief Class constructor