Support for AArch32 Arm Processors

This crate provides access to CPU registers and common peripherals for:

• Legacy Arm Processors, like the ARM7TDMI and ARM926
• Armv7-R Processors, like the Arm Cortex-R5
• Armv8-R AArch32 Processors, like the Arm Cortex-R52
• Armv7-A Processors, like the Arm Cortex-A5
• Armv8-A AArch32 Processors, like the Arm Cortex-A53 running in 32-bit mode

It does not support any M-Profile Processors (like the Arm Cortex-M3) as they have a fundamentally different interrupt vector table.

It also does not support processors running in AArch64 mode - A64 machine code uses different instructions for reading/writing system registers.

This crate contains:

• Raw register access to many AArch32 system registers
• A driver for the PMSAv7 Memory Protection Unit (MPU)
• A driver for the PMSAv8-R Memory Protection Unit (MPU)
• A driver for the Arm Generic Timer

If you need a driver for the Arm Generic Interrupt Controller, see https://github.com/ArmFirmwareCrates/arm-gic.

Minimum Supported Rust Version (MSRV)

This crate is guaranteed to compile on stable Rust 1.83.0 and up, as recorded by the package.rust-version property in Cargo.toml.

Increasing the MSRV is not considered a breaking change and may occur in a minor version release (e.g. from 0.3.0 to 0.3.1, because this is still a 0.x release).

Licence

• Copyright (c) Ferrous Systems
• Copyright (c) The Rust Embedded Devices Working Group developers

Licensed under either MIT or Apache-2.0 at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you shall be licensed as above, without any additional terms or conditions.