ARM Architecture - Exception and Interrupt Model
You want to add a custom interrupt handler for a new peripheral. Where in the ARM vector table should you place this handler's address?
You want to add a custom interrupt handler for a new peripheral. Where in the ARM vector table should you place this handler's address?
hard📝 Application Q15 of 15
Step-by-Step Solution
Solution:
Step 1: Understand vector table layout
The vector table has fixed slots for each exception and interrupt type.Step 2: Identify correct slot for custom interrupt
Custom peripheral interrupts must be placed at their assigned interrupt vector slot, not at stack pointer or reset handler entries.Final Answer:
At the specific interrupt vector slot assigned to that peripheral -> Option BQuick Check:
Custom handler = Assigned interrupt vector slot [OK]
Quick Trick: Place handlers in their assigned vector slots only [OK]
Common Mistakes:
- Replacing stack pointer or reset handler
- Appending handler at vector table end
- Ignoring fixed vector slot assignments
Master "Exception and Interrupt Model" in ARM Architecture
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