KL81 tamper event cannot generate interrupt

daweiy — Wed, 01 Feb 2017 00:40:19 GMT

Hi,

I have a hardware which has a tamper circuit loop. After I set up tamper pins, I trigger tamper event by switch on/off a physical switcher. When tamper event occurred, I can see DTF bit and tamper pin's TPF bit are both set. I also set DTIE bit in IER register to enable interrupt when DTF sets. But tamper service routine,Tamper_IRQHandler, is not called.

In the KL81 reference manual, it says "The DryIce Interrupt is asserted whenever a status flag and the corresponding interrupt enable bit are both set.". Obviously, it is not happening in my case.

Can anyone give me any clues on this issue?

Thanks!

Dawei

Re: KL81 tamper event cannot generate interrupt

daweiy — Mon, 06 Feb 2017 01:18:42 GMT

I didn't enable the interrupt in NVIC module. After I added these code, interrupt works.

NVIC_SetPriority(Tamper_IRQn, 0);
NVIC_EnableIRQ(Tamper_IRQn);

topic KL81 tamper event cannot generate interrupt in Kinetis Microcontrollers

KL81 tamper event cannot generate interrupt

Re: KL81 tamper event cannot generate interrupt