Defines the location of a contiguous run of file data. More...

#include <Extent.h>

Collaboration diagram for IFS::Extent:

Public Attributes
storage_size_t	offset
	From start of partition. More...

uint32_t	length
	In bytes. More...

uint16_t	skip
	Skip bytes to next repeat. More...

uint16_t	repeat
	Number of repeats. More...

Detailed Description

Defines the location of a contiguous run of file data.

e.g. offset: 0 length: 251 skip: 5 repeat: 30 Describes 30 blocks of data each of 251 bytes with a 5-byte gap between them. Thus run contains 7530 bytes of file data, consuming 7680 bytes of storage.

skip/repeat is necessary for SPIFFS to keep RAM usage sensible. Thus, a sample 267kByte application image has 1091 extents, but requires perhaps only 60 entries.

Member Data Documentation

◆ length

uint32_t IFS::Extent::length

In bytes.

◆ offset

storage_size_t IFS::Extent::offset

From start of partition.

◆ repeat

uint16_t IFS::Extent::repeat

Number of repeats.

◆ skip

uint16_t IFS::Extent::skip

Skip bytes to next repeat.

The documentation for this struct was generated from the following file:

Extent.h