v1.5.0

v1.5.0 updates the core to MicroPython v1.8, enables the machine module, re-implements line filters with Python callbacks, switches to MicroPython’s SD-card module, and adds bootloader filesystem-erase and binary-image loading options. The MicroPython bump is a behavior change — read the breaking changes below.

Highlights

• MicroPython v1.8 core update.

• machine module enabled.

• Python line filters — line filters re-implemented with Python callbacks.

• SD card — now uses MicroPython’s SD-card module.

• Breaking: MicroPython was updated to v1.8 — see the breaking changes.

New features

• Enabled the MicroPython machine module; re-implemented line filters with Python callbacks (with a line_filter.py example); added a timer-callback example and an updated PWM example.

• Bootloader / pydfu — added an option to erase the filesystem sectors, support for loading binary images from pydfu.py, and a combined binary for the programming jig.

Other changes and improvements

• Updated the bundled MicroPython to v1.8 (and updated the firmware code for it); enabled some MicroPython optimizations; switched the SD card to MicroPython’s SD-card module; removed the old CC3000 (CC3K) WiFi driver code.

Bug fixes

• Fixed MLX / fir memory issues and the base priority during a soft-reset.

Breaking API changes

User-visible API breaks between v1.4.0 and v1.5.0. Scope: Python C-modules in modules/ and Python libraries in scripts/libraries/.

The breaking change is a behavior change (same API, different results) — re-check affected scripts. Each commit hash links to its diff on GitHub.

MicroPython updated to v1.8 (behavior)

The bundled MicroPython core was updated to v1.8. Standard-library and language behavior follows upstream MicroPython 1.8; re-check scripts that depend on version-specific micropython / standard-module behavior.

Commits: 8e503f414

Migration checklist

Re-validate scripts that depend on version-specific MicroPython behavior against v1.8 (the MicroPython bump). All other scripts run unchanged.