How can I mask all Interrupts on MK21FN1M0VMC12

[brentgreenwald]

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?

[BlackNight · Accepted solution]

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