XinStellaris commented on code in PR #6829: URL: https://github.com/apache/incubator-nuttx/pull/6829#discussion_r957937919
########## drivers/mtd/mtd_config_fs.c: ########## @@ -0,0 +1,2652 @@ +/**************************************************************************** + * drivers/mtd/mtd_config_fs.c + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. The + * ASF licenses this file to you 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. + * + * NVS: non volatile storage in flash + * + * Copyright (c) 2018 Laczen + * + * SPDX-License-Identifier: Apache-2.0 + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> +#include <sys/types.h> +#include <stdbool.h> +#include <stdio.h> +#include <string.h> +#include <nuttx/crc8.h> +#include <debug.h> +#include <fcntl.h> +#include <errno.h> +#include <sys/poll.h> +#include <nuttx/kmalloc.h> +#include <nuttx/mtd/mtd.h> +#include <nuttx/mtd/configdata.h> + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +#define CONFIG_MTD_NVS_WRITE_BLOCK_SIZE 4 +#define NVS_WRITE_BLOCK_SIZE CONFIG_MTD_NVS_WRITE_BLOCK_SIZE +#define MIN(a, b) ((a) > (b) ? (b) : (a)) + +/* MASKS AND SHIFT FOR ADDRESSES + * an address in nvs is an uint32_t where: + * high 2 bytes represent the sector number + * low 2 bytes represent the offset in a sector + */ +#define ADDR_SECT_MASK 0xFFFF0000 +#define ADDR_SECT_SHIFT 16 +#define ADDR_OFFS_MASK 0x0000FFFF + +/* Status return values */ + +#define NVS_STATUS_NOSPACE 1 + +#define NVS_BLOCK_SIZE 32 + +#define NVS_LOOKUP_CACHE_NO_ADDR 0xFFFFFFFF Review Comment: That is not necessary, NVS_LOOKUP_CACHE_NO_ADDR is a special value to indicate no addr is stored in the cache. It is not inherently related to flash erased value -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@nuttx.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
