ra8_io_blockdev_mram_state_t Struct Reference

Caller-owned private state for an MRAM block device. More...

#include <ra8_io_blockdev_mram.h>

Data Fields
uintptr_t	base
	First MRAM byte address of the window (private).
uint32_t	block_count
	Number of 512-byte logical blocks (private).
bool	read_only
	true => writes and erases are rejected (private).

Detailed Description

Caller-owned private state for an MRAM block device.

Zero-initialise (= {}) and pass to ra8_io_blockdev_mram_init, which validates the window, fills this state, and binds it into a ra8_io_blockdev_t. Treat the fields as private. This state must out-live every call made through the device.

Invariant

base is aligned to the MRAM erase-block size and lies inside the extra/data MRAM region.

block_count * k_ra8_io_block_size_bytes is a multiple of the MRAM erase-block size and the window does not overlap code MRAM.

Since

0.1.0

Definition at line 63 of file ra8_io_blockdev_mram.h.

Field Documentation

base

uintptr_t ra8_io_blockdev_mram_state_t::base

First MRAM byte address of the window (private).

Definition at line 64 of file ra8_io_blockdev_mram.h.

Referenced by internal_mram_erase(), internal_mram_read(), internal_mram_write(), and ra8_io_blockdev_mram_init().

block_count

uint32_t ra8_io_blockdev_mram_state_t::block_count

Number of 512-byte logical blocks (private).

Definition at line 65 of file ra8_io_blockdev_mram.h.

Referenced by internal_mram_bounds(), internal_mram_get_caps(), and ra8_io_blockdev_mram_init().

read_only

bool ra8_io_blockdev_mram_state_t::read_only

true => writes and erases are rejected (private).

Definition at line 66 of file ra8_io_blockdev_mram.h.

Referenced by internal_mram_erase(), internal_mram_get_caps(), internal_mram_write(), and ra8_io_blockdev_mram_init().

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The documentation for this struct was generated from the following file:

• libs/ra8_io/inc/ra8_io_blockdev_mram.h