Embedded C for IoT: Interrupt Discipline

Overview

Refactor blocking loops into staged tasks, document volatile semantics, and capture timing diagrams mentors annotate line-by-line.

Included focus areas

• ISR sizing worksheets
• Volatile usage audits
• State machine diagrams with guard clauses
• Unit harness stubs without hardware
• Timing capture with logic analyzer screenshots
• Code review checklist for nested interrupts
• Memory pool exercises with leak guards

Outcomes you can evidence

• Pass mentor ISR audit without critical findings
• Ship annotated timing diagrams for three modules
• Maintain test doubles runnable in CI stub mode