We will retrieve some information from a Flash block by using the FlashIAPBlockDevice API and create a block device object within the available space of the memory. That allows to access that value even after rebooting the board. In this tutorial, we are going to save a value persistently inside the Flash memory. Mbed OS has a rich API for managing storage on different mediums, ranging from the small internal Flash memory of a microcontroller to external SecureDigital cards with large data storage space. Portenta's core is based on the Mbed operating system, allowing for Arduino APIs to be integrated using APIs exposed directly by Mbed OS.
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