Component Makefile |

Contributed by Bangbang, organized by Ai-Thinker

Adding the littlefs File System to AI-WB2

littlefs filesystem GitHub repository

<https://github.com/littlefs-project/littlefs>

Actually, I ported it from the Ai-M6X_SDK_release_AiPi_Eyes_SDK.

Attached files:

littlefs_components.zip(765.08 KB, downloads: 2)

The archive contains components and examples. Put the contents of the components folder into the components directory under the AI-WB2 SDK As shown in the figure

The examples go under

A bouffalo.mk was added to the components

Component Makefile

These include paths would be exported to project level
COMPONENT_ADD_INCLUDEDIRS += port littlefs littlefs/bd
not be exported to project level
COMPONENT_PRIV_INCLUDEDIRS :=
This component's src
COMPONENT_SRCS := port/lfs_xip_flash.c littlefs/lfs.c littlefs/lfs_util.c littlefs/bd/lfs_filebd.c littlefs/bd/lfs_rambd.c littlefs/bd/lfs_testbd.c COMPONENT_OBJS := $(patsubst %.c,%.o, $(COMPONENT_SRCS))
COMPONENT_SRCDIRS := port littlefs littlefs/bd

#CPPFLAGS +=

Modified lfs_xip_flash.c

#include "lfs.h" //#include "bflb_flash.h" //#include "bflb_l1c.h" #include <hosal_flash.h>
#define CONFIG_LITTLEFS_FLASH_ADDRESS       0x210000
#ifndef CONFIG_LITTLEFS_FLASH_ADDRESS #error "must define CONFIG_LITTLEFS_FLASH_ADDRESS" #endif
/*****************************************************************************
@brief       Read a region in a block. Negative error codes are propagated *             to the user.
@param[in] c
@param[in] block
@param[in] off
@param[out] buffer
@param[in] size
@retval int             *****************************************************************************/ int lfs_xip_flash_read(const struct lfs_config *c, lfs_block_t block,                      lfs_off_t off, void *buffer, lfs_size_t size) { return hosal_flash_raw_read((uint8_t *)buffer, CONFIG_LITTLEFS_FLASH_ADDRESS + block * c->block_size + off, size); }
/*****************************************************************************
@brief       Program a region in a block. The block must have previously *             been erased. Negative error codes are propagated to the user. *             May return LFS_ERR_CORRUPT if the block should be considered bad.
@param[in] c
@param[in] block
@param[in] off
@param[in] buffer
@param[in] size
@retval int             *****************************************************************************/ int lfs_xip_flash_prog(const struct lfs_config *c, lfs_block_t block,                      lfs_off_t off, const void *buffer, lfs_size_t size) { return hosal_flash_raw_write((uint8_t *)buffer, CONFIG_LITTLEFS_FLASH_ADDRESS + block * c->block_size + off, size); }
/*****************************************************************************
@brief       Erase a block. A block must be erased before being programmed. *             The state of an erased block is undefined. Negative error codes *             are propagated to the user. *             May return LFS_ERR_CORRUPT if the block should be considered bad.
@param[in] c
@param[in] block
@retval int

Click to expand full code

*****************************************************************************/
int lfs_xip_flash_erase(const struct lfs_config *c, lfs_block_t block)
{
return hosal_flash_raw_erase(CONFIG_LITTLEFS_FLASH_ADDRESS + block * c->block_size, c->block_size);
}

/*****************************************************************************

@brief Sync the state of the underlying block device. Negative error * codes are propagated to the user.
@param[in] c
@retval int

Click to expand full code

*****************************************************************************/
int lfs_xip_flash_sync(const struct lfs_config *c)
{
/*!< if use xip, may need to clean cache */
return 0;
}

Create the littlefs task in main()

xTaskCreate(littlefs_task, (char*)"littlefs_task", 512, NULL, 13, NULL);//任务优先级数值越小，优先级越低

The littlefs task runs a simple test

/**************************************************************************** *
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.
****************************************************************************/
/****************************************************************************
Included Files ****************************************************************************/
#include "FreeRTOS.h" #include "task.h" #include "littlefs_task.h" #include "lfs.h" #include "lfs_port.h"
#include <blog.h> /* 组件log开关静态开关在相应的 proj_config.mk 文件目录下，LOG_ENABLED_COMPONENTS配置上增加对应组件的名字例如这里需要增加blog_testc组件静态开关，其他组件默认关闭 LOG_ENABLED_COMPONENTS:=blog_testc */

/* 文件log管理 //#define BLOG_HARD_DECLARE_DISABLE 1 // 关 */

/* 私有log管理静态开关使用就增加BLOG_DECLARE(…)，不用直接不增加此行即可。 BLOG_DECLARE(blog_testc2); // 打开，其中　"blog_testc2"为用户自定义 //BLOG_DECLARE(main); */

/* 调整等级 blog_set_level_log_component(BLOG_LEVEL_ALL, "blog_demo"); */

BLOG_DECLARE(littlefs);//必需定义？??? /****************************************************************************

Pre-processor Definitions

Click to expand full code

****************************************************************************/

/*!< use memory area after 512k */
#define LITTLEFS_FLASH_SIZE        (0x28000)
#define LITTLEFS_FLASH_BLOCK_SIZE  4096
#define LITTLEFS_FLASH_BLOCK_COUNT (LITTLEFS_FLASH_SIZE / LITTLEFS_FLASH_BLOCK_SIZE)
#define LITTLEFS_FLASH_BLOCK_CYCLE 500

/****************************************************************************

Private Data ****************************************************************************/

lfs_t lfs; lfs_file_t file;

Click to expand full code

/*!< configuration of the filesystem is provided by this struct */
const struct lfs_config cfg = {
// block device operations

.read = lfs_xip_flash_read, .prog = lfs_xip_flash_prog, .erase = lfs_xip_flash_erase, .sync = lfs_xip_flash_sync,

// block device configuration .read_size = 16, .prog_size = 16, .lookahead_size = 16, .cache_size = 16,

.block_size = LITTLEFS_FLASH_BLOCK_SIZE, .block_count = LITTLEFS_FLASH_BLOCK_COUNT, .block_cycles = LITTLEFS_FLASH_BLOCK_CYCLE, };

/****************************************************************************

Private Function Prototypes ****************************************************************************/

/****************************************************************************

Functions

Click to expand full code

****************************************************************************/

void littlefs_task(void *pvParameters)
{
blog_info_user(littlefs,"mount the filesystem");
// mount the filesystem
int err = lfs_mount(&lfs, &cfg);

// reformat if we can't mount the filesystem
// this should only happen on the first boot
if (err) {
blog_error_user(littlefs,"try to reformat");
err = lfs_format(&lfs, &cfg);
if (err) {
blog_error_user(littlefs,"reformat fail");
vTaskDelete(NULL);
}
blog_info_user(littlefs,"reformat success");
blog_info_user(littlefs,"try mount the filesystem");
err = lfs_mount(&lfs, &cfg);
if (err) {
blog_error_user(littlefs,"try mount fail");
vTaskDelete(NULL);
}
}

blog_info_user(littlefs,"mount success");

// read current count
uint32_t boot_count = 0;
lfs_file_open(&lfs, &file, "boot_count", LFS_O_RDWR | LFS_O_CREAT);
lfs_file_read(&lfs, &file, &boot_count, sizeof(boot_count));

// update boot count

boot_count += 1;

Click to expand full code

lfs_file_rewind(&lfs, &file);
lfs_file_write(&lfs, &file, &boot_count, sizeof(boot_count));

// remember the storage is not updated until the file is closed successfully
lfs_file_close(&lfs, &file);

// release any resources we were using
// lfs_unmount(&lfs);

// print the boot count
printf("boot_count: %d\n", boot_count);
vTaskDelete(NULL);
while (1) {
vTaskDelay(1000 / portTICK_PERIOD_MS);
}
}

Thanks

Wi-Fi

TCP/IP Communication

HTTP/S

BLE

Developer Contributions

Quick Start

Environment Setup

Build & Flash

Peripherals

Networking

System

Wi-Fi

TCP/IP Communication

HTTP/S

BLE

Quick Start

Environment Setup

Build & Flash

Peripherals

Networking

System

Adding the littlefs File System to AI-WB2

Component Makefile

These include paths would be exported to project level

not be exported to project level

This component's src

TCP/IP Communication

HTTP/S

Quick Start

Environment Setup

Build & Flash

Peripherals

Networking

System

TCP/IP Communication

HTTP/S

Adding the littlefs File System to AI-WB2 ​

Component Makefile ​

​

These include paths would be exported to project level ​

not be exported to project level ​

This component's src ​

​

Adding the littlefs File System to AI-WB2

Component Makefile

These include paths would be exported to project level

not be exported to project level

This component's src