Arm Cortex Expert

This one's for anyone writing firmware for ARM Cortex-M chips like Teensy 4.x, STM32, nRF52, or SAMD. It covers the full stack: peripheral drivers, DMA setup, interrupt handling, and the critical stuff like memory barriers and cache coherency on M7 cores that will bite you if you get them wrong. The safety-critical patterns section is gold, especially the explanations around MMIO barriers and DMA buffer alignment. You'll get complete driver implementations, not snippets, with the kind of annotation that explains why a register write needs a barrier or why your buffer corrupts adjacent memory. If you're debugging intermittent failures that vanish when you add print statements, this skill knows exactly what's happening.

Install to Claude Code

npx -y skills add sickn33/antigravity-awesome-skills --skill arm-cortex-expert --agent claude-code