diff --git a/en/device-dev/kernel/kernel-mini-extend-file-littlefs-guide.md b/en/device-dev/kernel/kernel-mini-extend-file-littlefs-guide.md index e0f9a515a362443d2559ed571e62dccd2d60ab98..ab97aff7d89897b05d10c19a8fad5c959a7442d0 100644 --- a/en/device-dev/kernel/kernel-mini-extend-file-littlefs-guide.md +++ b/en/device-dev/kernel/kernel-mini-extend-file-littlefs-guide.md @@ -2,7 +2,7 @@ - [Sample Code](#section1034515054620) -When porting LittleFS to a new hardware device, you need to declare **lfs\_config**: +Before porting LittleFS to a new hardware device, declare **lfs\_config**: ``` const struct lfs_config cfg = { @@ -23,15 +23,15 @@ const struct lfs_config cfg = { }; ``` -**.read**, **.prog**, **.erase**, and **.sync** correspond to the read, write, erase, and synchronization APIs at the bottom layer of the hardware platform, respectively. +**.read**, **.prog**, **.erase**, and **.sync** correspond to the underlying read, write, erase, and synchronization APIs of the hardware platform, respectively. -**read\_size** indicates the number of bytes read each time. You can set it to a value greater than the physical read unit to improve performance. This value determines the size of the read cache. However, if the value is too large, more memory is consumed. +**read\_size** indicates the number of bytes read each time. You can set it to a value greater than the physical read unit to improve performance. This value determines the size of the read cache. However, if the value is too large, more memory is consumed. -**prog\_size** indicates the number of bytes written each time. You can set it to a value greater than the physical write unit to improve performance. This value determines the size of the write cache and must be an integral multiple of **read\_size**. However, if the value is too large, more memory is consumed. +**prog\_size** indicates the number of bytes written each time. You can set it to a value greater than the physical write unit to improve performance. This value determines the size of the write cache and must be an integral multiple of **read\_size**. However, if the value is too large, more memory is consumed. -**block\_size**: indicates the number of bytes in each erase block. The value can be greater than that of the physical erase unit. However, a smaller value is recommended because each file occupies at least one block. The value must be an integral multiple of **prog\_size**. +**block\_size** indicates the number of bytes in each erase block. The value can be greater than that of the physical erase unit. However, a smaller value is recommended because each file occupies at least one block. The value must be an integral multiple of **prog\_size**. -**block\_count** indicates the number of blocks that can be erased, which depends on the capacity of the block device and the size of the block to be erased \(**block\_size**\). +**block\_count** indicates the number of blocks that can be erased, which depends on the capacity of the block device and the size of the block to be erased \(**block\_size**\). ## Sample Code