LPC55 interrupt preemption

Jp1095 — Fri, 12 Aug 2022 14:52:12 GMT

Hello,

According to the cortex-M33 documentation, https://developer.arm.com/documentation/100235/0004/the-cortex-m33-processor/exception-model/interrupt-priority-grouping, interrupt preemption is controlled via interrupt priority grouping. I don't see any mention of this in the LPC5502 user manual or datasheet. Is interrupt preemption possible on the LPC5502?

Thanks

Re: LPC55 interrupt preemption

Alice_Yang — Mon, 15 Aug 2022 09:42:59 GMT

Hello,

The interrupt priority register is ARM private peripherals bus, you can also check UM11424 ->

Table 9. Register overview: NVIC (base address = 0xe000e100)

Alice