SysTick and Interrupts

[lpcware]

Content originally posted in LPCWare by sallys21 on Wed Oct 17 09:16:19 MST 2012
Hi All,

This is my first time programming with NXP, specifically the LPC11U14.

My question is:

Can my SysTick interrupt occur during another interrupt like a Timer? I know you can set the priorities for the interrupts, but I can't figure out if during an ISR, the SysTick can continue to keep track of my time or if it'll wait till I'm done in the current one and then go into the next?

[lpcware]

Content originally posted in LPCWare by ex-kayoda on Wed Oct 17 09:49:43 MST 2012
Interrupts interrupt interrupts :):) if they have higher interrupt priority. With same interrupt priority you'll see a "tail chaining".

See: http://www.arm.com/files/pdf/IntroToCortex-M3.pdf

or

http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0552a/Babefdjc.html