W25Q32JV Flash driver

This is a generic driver for the W25Q32JV and W25Q128FV flash chip from Winbond. It probably also works with other similar variants.

It supports:

• Blocking SPI using embedded-hal 1.0
• Async SPI using embedded-hal-async
• Blocking embedded-storage
• Async embedded-storage-async

To unlock the use of async, activate the async feature on the crate. Default is W25Q32(32 M-bit), activate +megabits64 to support W25Q64(64 M-bit), or +megabits128 to support W25Q128(128 M-bit).

Defmt is also supported through the defmt feature.

TODO

• Fast read support. So far there's only support for the normal read, so don't use a SPI speed of > 50Mhz

Changelog

Unreleased

[0.5.1] - 2025-06-01

• Add a feature flag to support 64M-bit variants

[0.5.0] - 2025-03-27

• Rename write function so that it does not clobber the trait methods
• Add a feature flag to support 128M-bit variants
• Add marker trait for Multiwrite to ASYNC API

[0.4.0] - 2024-01-10

• Update to embedded-hal 1.0

[0.3.2] - 2023-11-13

• Added functions to use the power down mode of the W25Q32JV.

[0.3.1] - 2023-10-24

• Added readback-check feature that reads back the writes and the erases to check if they've succeeded ok

[0.3.0] - 2023-10-23

• BREAKING: Error struct is now exhaustive and a variant was added
• Write enable is now being checked

[0.1.0] - 2023-05-11

• Initial release