Скачать или смотреть Interrupt Latency: What Every Embedded Engineer Must know

In this video, we break down interrupt latency — the time between an interrupt event and the first instruction executed inside the ISR.

We cover:

What actually happens inside the CPU during interrupt entry
Context saving and stack operations
Vector table lookup
How many clock cycles it really takes
What affects latency (priority, flash wait states, architecture)
How to measure it on real hardware using an STM32F407VG
We also discuss baseline latency numbers for ARM Cortex-M4 cores



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Timestamps:
(00:00) Intro
(00:22) Definition of Interrupt Latency
(02:54) Influence of Architure
(03:50) Delays from Prioriy assignement
(04:46) Delays from Cache Miss
(05:13) Tail Chaining
(06:13) Late Arrival

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Ebenezer Asabre
embstack


#embeddedsystems #baremetal #programming #cprogramming