Update IDF to 9a26296

tools/sdk/include/nvs_flash/nvs_flash.h

@@ -21,28 +21,61 @@ extern "C" {
 #include "nvs.h"
 
 /**
- * @brief Initialize NVS flash storage with layout given in the partition table.
+ * @brief Initialize the default NVS partition.
+ *
+ * This API initialises the default NVS partition. The default NVS partition
+ * is the one that is labelled "nvs" in the partition table.
  *
  * @return
  *      - ESP_OK if storage was successfully initialized.
  *      - ESP_ERR_NVS_NO_FREE_PAGES if the NVS storage contains no empty pages
  *        (which may happen if NVS partition was truncated)
+ *      - ESP_ERR_NOT_FOUND if no partition with label "nvs" is found in the partition table
  *      - one of the error codes from the underlying flash storage driver
  */
 esp_err_t nvs_flash_init(void);
 
+/**
+ * @brief Initialize NVS flash storage for the specified partition.
+ *
+ * @param[in]  partition_name    Name (label) of the partition. Note that internally a reference to
+ *                               passed value is kept and it should be accessible for future operations
+ *
+ * @return
+ *      - ESP_OK if storage was successfully initialized.
+ *      - ESP_ERR_NVS_NO_FREE_PAGES if the NVS storage contains no empty pages
+ *        (which may happen if NVS partition was truncated)
+ *      - ESP_ERR_NOT_FOUND if specified partition is not found in the partition table
+ *      - one of the error codes from the underlying flash storage driver
+ */
+esp_err_t nvs_flash_init_partition(const char *partition_name);
 
 /**
- * @brief Erase NVS partition
+ * @brief Erase the default NVS partition
  *
- * This function erases all contents of NVS partition
+ * This function erases all contents of the default NVS partition (one with label "nvs")
  *
  * @return
  *      - ESP_OK on success
- *      - ESP_ERR_NOT_FOUND if there is no NVS partition in the partition table
+ *      - ESP_ERR_NOT_FOUND if there is no NVS partition labeled "nvs" in the
+ *        partition table
  */
 esp_err_t nvs_flash_erase(void);
 
+/**
+ * @brief Erase specified NVS partition
+ *
+ * This function erases all contents of specified NVS partition
+ *
+ * @param[in]  part_name    Name (label) of the partition to be erased
+ *
+ * @return
+ *      - ESP_OK on success
+ *      - ESP_ERR_NOT_FOUND if there is no NVS partition with the specified name
+ *        in the partition table
+ */
+esp_err_t nvs_flash_erase_partition(const char *part_name);
+
 #ifdef __cplusplus
 }
 #endif