CodeWarrior for MCU中的主题 Program crashes in isr

Program crashes in isr

Mockingbird — Mon, 17 Apr 2017 19:53:09 GMT

I am running an assembly-language program on a Kinetis KL46Z.

Whenever my program tries to execute an instruction in the interrupt service routine, it branches to Default_Handler(). It does not matter what instructions are in the ISR. Even a NOP in the ISR causes a crash. There is nothing wrong with the ISR's location in memory. Non-ISR instructions execute properly when located at the same address. The ISR code is preceded by an .align 2 directive just as the main routine is.

Why won't my ISR run?

Re: Program crashes in isr

Alice_Yang — Tue, 18 Apr 2017 07:23:18 GMT

Hello Timothy,

Which version of CW do you used ?

Could you please share a same project to me , I will check it on my side , thanks!

Alice

Re: Program crashes in isr

Mockingbird — Tue, 18 Apr 2017 16:01:30 GMT

Alice, thank you for your reply.

I am using Codewarrior for MCU version 10.7 evaluation version.

How do I share a project? Do I attach files to my reply?

Tim

Re: Program crashes in isr

Mockingbird — Tue, 18 Apr 2017 17:26:04 GMT

Never mind. It seems I needed a .thumb_func directive at my ISR.

Tim

Re: Program crashes in isr

Alice_Yang — Thu, 20 Apr 2017 08:59:21 GMT

Hi Timothy,

So does your problem been solved by add a .thumb_func directive at your ISR ?

Alice