.. currentmodule:: mimxrt .. _mimxrt.Flash:

class Flash -- access to built-in flash storage

This class gives access to the SPI flash memory.

In most cases, to store persistent data on the device, you'll want to use a higher-level abstraction, for example the filesystem via Python's standard file API, but this interface is useful to :ref:customise the filesystem configuration <filesystem> or implement a low-level storage system for your application.

Constructors

.. class:: Flash()

Gets the singleton object for accessing the SPI flash memory.

Methods

.. method:: Flash.readblocks(block_num, buf) Flash.readblocks(block_num, buf, offset) .. method:: Flash.writeblocks(block_num, buf) Flash.writeblocks(block_num, buf, offset) .. method:: Flash.ioctl(cmd, arg)

These methods implement the simple and extended
:ref:`block protocol <block-device-interface>` defined by
:class:`vfs.AbstractBlockDev`.

The block size can be queried by calling ``ioctl(5, 0)``. Block numbers
are relative to the start of the user flash storage area, not the physical
start of flash memory.