Espressif ESP32-S2 User Manual

Chapter 2. API Reference
2. If you have an environment where a Python interpreter is not available, but a host compiler is available. Oth-
erwise, a pre-compiled mkspiffs binary can do the job. However, there is no build system integration for
mkspiffs and the user has to do the corresponding work: compiling mkspiffs during build (if a pre-
compiled binary is not used), creating build rules/targets for the output files, passing proper parameters to the
tool, etc.
See also
• Partition Table documentation
Application Example
An example of using SPIFFS is provided in the storage/spiffs directory. This example initializes and mounts a
SPIFFS partition, then writes and reads data from it using POSIX and C library APIs. See the README.md file in
the example directory for more information.
High-level API Reference
Header File
• components/spiffs/include/esp_spiffs.h
Functions
esp_err_t esp_vfs_spiffs_register(const esp_vfs_spiffs_conf_t *conf)
Register and mount SPIFFS to VFS with given path prefix.
Return
• ESP_OK if success
• ESP_ERR_NO_MEM if objects could not be allocated
• ESP_ERR_INVALID_STATE if already mounted or partition is encrypted
• ESP_ERR_NOT_FOUND if partition for SPIFFS was not found
• ESP_FAIL if mount or format fails
Parameters
• conf: Pointer to esp_vfs_spiffs_conf_t configuration structure
esp_err_t esp_vfs_spiffs_unregister(const char *partition_label)
Unregister and unmount SPIFFS from VFS
Return
• ESP_OK if successful
• ESP_ERR_INVALID_STATE already unregistered
Parameters
• partition_label: Same label as passed to esp_vfs_spiffs_register.
bool esp_spiffs_mounted(const char *partition_label)
Check if SPIFFS is mounted
Return
• true if mounted
• false if not mounted
Parameters
• partition_label: Optional, label of the partition to check. If not specified, first partition with
subtype=spiffs is used.
esp_err_t esp_spiffs_format(const char *partition_label)
Format the SPIFFS partition
Return
• ESP_OK if successful
• ESP_FAIL on error
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Release v4.4

Espressif ESP32-S2 Specifications

General

Brand	Espressif
Model	ESP32-S2
Category	Single board computers
Language	English