esp-idf/components/nvs_flash/src/nvs_handle_simple.cpp

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// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <cstdlib>
#include "nvs_handle.hpp"
#include "nvs_partition_manager.hpp"
namespace nvs {
NVSHandleSimple::~NVSHandleSimple() {
NVSPartitionManager::get_instance()->close_handle(this);
}
esp_err_t NVSHandleSimple::set_typed_item(ItemType datatype, const char *key, const void* data, size_t dataSize)
{
if (!valid) return ESP_ERR_NVS_INVALID_HANDLE;
if (mReadOnly) return ESP_ERR_NVS_READ_ONLY;
return mStoragePtr->writeItem(mNsIndex, datatype, key, data, dataSize);
}
esp_err_t NVSHandleSimple::get_typed_item(ItemType datatype, const char *key, void* data, size_t dataSize)
{
if (!valid) return ESP_ERR_NVS_INVALID_HANDLE;
return mStoragePtr->readItem(mNsIndex, datatype, key, data, dataSize);
}
esp_err_t NVSHandleSimple::set_string(const char *key, const char* str)
{
if (!valid) return ESP_ERR_NVS_INVALID_HANDLE;
if (mReadOnly) return ESP_ERR_NVS_READ_ONLY;
return mStoragePtr->writeItem(mNsIndex, nvs::ItemType::SZ, key, str, strlen(str) + 1);
}
esp_err_t NVSHandleSimple::set_blob(const char *key, const void* blob, size_t len)
{
if (!valid) return ESP_ERR_NVS_INVALID_HANDLE;
if (mReadOnly) return ESP_ERR_NVS_READ_ONLY;
return mStoragePtr->writeItem(mNsIndex, nvs::ItemType::BLOB, key, blob, len);
}
esp_err_t NVSHandleSimple::get_string(const char *key, char* out_str, size_t len)
{
if (!valid) return ESP_ERR_NVS_INVALID_HANDLE;
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return mStoragePtr->readItem(mNsIndex, nvs::ItemType::SZ, key, out_str, len);
}
esp_err_t NVSHandleSimple::get_blob(const char *key, void* out_blob, size_t len)
{
if (!valid) return ESP_ERR_NVS_INVALID_HANDLE;
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return mStoragePtr->readItem(mNsIndex, nvs::ItemType::BLOB, key, out_blob, len);
}
esp_err_t NVSHandleSimple::get_item_size(ItemType datatype, const char *key, size_t &size)
{
if (!valid) return ESP_ERR_NVS_INVALID_HANDLE;
return mStoragePtr->getItemDataSize(mNsIndex, datatype, key, size);
}
esp_err_t NVSHandleSimple::erase_item(const char* key)
{
if (!valid) return ESP_ERR_NVS_INVALID_HANDLE;
if (mReadOnly) return ESP_ERR_NVS_READ_ONLY;
return mStoragePtr->eraseItem(mNsIndex, key);
}
esp_err_t NVSHandleSimple::erase_all()
{
if (!valid) return ESP_ERR_NVS_INVALID_HANDLE;
if (mReadOnly) return ESP_ERR_NVS_READ_ONLY;
return mStoragePtr->eraseNamespace(mNsIndex);
}
esp_err_t NVSHandleSimple::commit()
{
if (!valid) return ESP_ERR_NVS_INVALID_HANDLE;
return ESP_OK;
}
esp_err_t NVSHandleSimple::get_used_entry_count(size_t& used_entries)
{
used_entries = 0;
if (!valid) return ESP_ERR_NVS_INVALID_HANDLE;
size_t used_entry_count;
esp_err_t err = mStoragePtr->calcEntriesInNamespace(mNsIndex, used_entry_count);
if(err == ESP_OK){
used_entries = used_entry_count;
}
return err;
}
void NVSHandleSimple::debugDump() {
return mStoragePtr->debugDump();
}
esp_err_t NVSHandleSimple::fillStats(nvs_stats_t& nvsStats) {
return mStoragePtr->fillStats(nvsStats);
}
esp_err_t NVSHandleSimple::calcEntriesInNamespace(size_t& usedEntries) {
return mStoragePtr->calcEntriesInNamespace(mNsIndex, usedEntries);
}
bool NVSHandleSimple::findEntry(nvs_opaque_iterator_t* it, const char* name) {
return mStoragePtr->findEntry(it, name);
}
bool NVSHandleSimple::nextEntry(nvs_opaque_iterator_t* it) {
return mStoragePtr->nextEntry(it);
}
}