a2dcf7faa8
This commit adds support for multiple NVS partitions. This provides application a flexibility to have multiple NVS partitions such as separate partition with read-only manufacturing data and read-write partition with configuration. Application can also use this to separate out application's configuration storage from system configuration. This feature does not change any of the basic property of NVS subsystem. The same-named namespaces across partitions are considered to be different namespaces. The original NVS API available for the applications remains unchanged. The only difference is that instead of first NVS partition in the partition table, it now operates on the partition with label "nvs" (which is default in the IDF provided partition table files). Additional APIs are provided to open a handle and erase NVS with partition name as a parameter. A test case is added in the host tests and it is made sure that all the host tests pass. nvs_rw_value app is also tested with multiple partitions. Signed-off-by: Amey Inamdar <amey.inamdar@gmail.com>
50 lines
1.6 KiB
C
50 lines
1.6 KiB
C
// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#pragma once
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "nvs_flash.h"
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/**
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* @brief Initialize NVS flash storage with custom flash sector layout
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*
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* @note This API is intended to be used in unit tests.
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*
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* @param partName Partition name of the NVS partition as per partition table
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* @param baseSector Flash sector (units of 4096 bytes) offset to start NVS
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* @param sectorCount Length (in flash sectors) of NVS region.
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NVS partition must be at least 3 sectors long.
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* @return ESP_OK if flash was successfully initialized
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*/
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esp_err_t nvs_flash_init_custom(const char *partName, uint32_t baseSector, uint32_t sectorCount);
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/**
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* @brief Dump contents of NVS storage to stdout
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*
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* This function may be used for debugging purposes to inspect the state
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* of NVS pages. For each page, list of entries is also dumped.
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*
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* @param partName Partition name of the NVS partition as per partition table
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*/
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void nvs_dump(const char *partName);
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#ifdef __cplusplus
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}
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#endif
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