How can I mask all Interrupts on MK21FN1M0VMC12

brentgreenwald — Wed, 03 Aug 2016 17:44:14 GMT

I see the ARM has a non-maskable interrupt (NMI). Is there an easy way to mask all maskable interrupts, like a single flag or bit?

Re: How can I mask all Interrupts on MK21FN1M0VMC12

BlackNight — Wed, 03 Aug 2016 19:13:10 GMT

Hi Brent,

yes, the 'I' bit in the PRIMASK ARM core register. Below how to enable/disable all maskable interrupts:

	#define DisableInterrupts()	__asm volatile("cpsid i")
	#define EnableInterrrupts()	__asm volatile("cpsie i")

I hope this helps,

Erich