Change Note 2026-04-18

lib/v3.1, debugging

lib/v3.1

The framework is now ported to lib/v3.1 for: RP2350, STM32U585, and STM32H573.
This needs documentation – working on it.
Systematic start-up: check out directories startup and modules Main for each MCU.
Modularised support for peripheral devices and their base definitions:
- check out directories base and sub-directories for XXX_DEV and YYY_SYS modules;
- XXX_DEV: definitions for devices used for the actual control program;
- YYY_SYS: definitions for devices used to configure and run the MCU itself;
- the single-device definitions are then consolidated into one single DEV and one single SYS modules to avoid unncessary numbers of modules that are imported and linked; at the moment, the modules in the framework (eg. UART) still import their specific modules, but DEV and SYS have been generated (tool merge-defs).
Secure/Non-secure support is implemented for all three Cortex-M33 MCUs:
- check out test/example programs SecureX
  - U585 and H573: Secure5
  - RP2350:
    - without flash partitions: Secure6 (no QMI address translation)
    - with flash partitions: Secure7 (uses QMI address translation)
Added detailed build and load instructions.
The new deterministic Stacktrace has been verified to work with the S/NS programs.

Debugging works consistently with both single-image and S/NS dual-image programs.
See the build and load instructions how to make the corresponding ELF files containing the necessary DWARF debug data.
See Debugging for more instructions on debugging.

Other than the Secure/Non-secure programs listed above, several other example and test programs are ported to lib/v3.1 – see the repo.

This website is not exactly up-to-date in many respects.
I am working on a better structure to
- better accomodate the new MCUs, design aspects (eg. S/NS), and framework versions;
- make the maintenance work easier.

Last updated: 18 April 2026