Term · Embedded Software & Tools
Nested interrupts
The ability of a higher priority interrupt to preempt a handler already running at a lower priority. It keeps urgent events responsive but requires handlers to be reentrant-safe and enlarges worst-case stack depth.
- Also known as
- Interrupt nesting, Interrupt preemption
- Type
- Term
- Domain
- Embedded Software & Tools, RTOS and scheduling
Notes
Cortex-M nests by default using priority groups, whereas classic ARM7 required explicit software re-enabling inside the handler.
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