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 customise the filesystem configuration <filesystem> or implement a low-level storage system for your application.

Constructors#

Gets the singleton object for accessing the SPI flash memory.

Methods#

Flash.readblocks(block_num, buf) Flash.readblocks(block_num, buf, offset)

Flash.writeblocks(block_num, buf) Flash.writeblocks(block_num, buf, offset)

Flash.ioctl(cmd, arg)

These methods implement the simple and extended block protocol <block-device-interface> defined by 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.