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Added a freeEntries method to Preferences library #1722

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Merged
merged 1 commit into from
Aug 14, 2018
Merged

Added a freeEntries method to Preferences library #1722

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10 changes: 10 additions & 0 deletions libraries/Preferences/src/Preferences.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -468,3 +468,13 @@ size_t Preferences::getBytes(const char* key, void * buf, size_t maxLen){
}
return len;
}

size_t Preferences::freeEntries() {
nvs_stats_t nvs_stats;
esp_err_t err = nvs_get_stats(NULL, &nvs_stats);
if(err){
log_e("Failed to get nvs statistics");
return 0;
}
return nvs_stats.free_entries;
}
1 change: 1 addition & 0 deletions libraries/Preferences/src/Preferences.h
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Expand Up @@ -64,6 +64,7 @@ class Preferences {
size_t getString(const char* key, char* value, size_t maxLen);
String getString(const char* key, String defaultValue = String());
size_t getBytes(const char* key, void * buf, size_t maxLen);
size_t freeEntries();
};

#endif