![]() Wear-leveling - typically storage supports a limited number of erases per block, so making use of the entire storage device is important for reliability.Power-cut resilience - it requires strong guarantees that the file system remains consistent, and data is flushed to the underlying storage.So, you want a file system (around since 1965) that manages this all for you.įile systems for embedded systems and IoT devices have some additional requirements: ![]() There's no overview of the data on flash, no guarantee that you don't overwrite pages that other data use, and writing to the same flash page over and over again is bad for durability. You can grab some non-volatile memory (such as EEPROM or an SD card) and write this data to random flash pages, but this is error-prone. Storing data on an embedded device is useful: whether it's configuration files, batches of sensor information or a new firmware update. This high-integrity file system is small, power-cut resilient and has wear-leveling support for flash chips that do not have their own wear levelling controller. Mbed OS 5.7 supports both a FAT file system and introduces a new high-integrity embedded file system. Mbed OS is making it easy to add file system support by providing a wide portfolio of file systems. But utilizing the file system and pairing it with the correct storage technology such as external flash or SD cards can be difficult. Having a small and resilient file system is crucial for many IoT devices. ![]()
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