Storage Example
Storage refers to the medium or mechanism used to save data in the device, including volatile storage (such as RAM) and non-volatile storage (such as flash, EEPROM, NVS, etc.), used for temporary or long-term data storage, and supports data reading, writing, and management.
ESP-IDF provides a variety of common storage implementations, such as NVS, SD card, and Spiffs. These storage solutions allow developers to choose the appropriate storage method according to application requirements, implement parameter configuration, file storage, log recording, or persistent data management, while providing a unified interface and security guarantee, facilitating efficient development of embedded applications.
This document explains some of the storage examples provided by the official ESP-IDF, including NVS_rw_value, SD_card, and Spiffs, aiming to help developers quickly understand the implementation methods, configuration methods, and usage logic of these protocols in ESP-IDF, and provide practical application references. In addition, since these storage examples all involve file read and write operations, file operation instructions are also provided to help developers understand how to access and manage data on different storage systems through POSIX and C standard library interfaces.