embedded runtime_error ai_generated true

HardFault: interrupt priority grouping error

ID: embedded/interrupt-priority-conflict

Also available as: JSON · Markdown
75%Fix Rate
80%Confidence
3Evidence
2023-01-01First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
32 active — — —

Root Cause

Interrupt priority misconfigured causing HardFault or missed interrupts.

generic

Workarounds

  1. 88% success Configure NVIC priority grouping correctly for preemption needs
  2. 85% success Use FreeRTOS-safe interrupt priorities (above configMAX_SYSCALL_INTERRUPT_PRIORITY)

Dead Ends

Common approaches that don't work:

  1. Set all interrupts to same priority 80% fail

    No preemption, high-priority tasks blocked

  2. Disable all interrupts during critical sections 78% fail

    Misses time-critical events