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.. currentmodule:: rp2
.. _rp2.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`.
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