topic Getting IRQ_Handler to work for imx53 in i.MX Processors

Getting IRQ_Handler to work for imx53

davidgolke — Thu, 11 Feb 2016 20:24:32 GMT

Having trouble defining IRQ_Handler. I believe I have all of the necessary setup (enabling interrupts, enable global interrupts through TZIC, set up icf file, etc) but I cannot get this function to be triggered/entered. Any help would be appreciated.

From the startup file:

LDR PC,Reset_Addr ; Reset

LDR PC,Undefined_Addr ; Undefined instructions

LDR PC,SWI_Addr ; Software interrupt (SWI/SVC)

LDR PC,Prefetch_Addr ; Prefetch abort

LDR PC,Abort_Addr ; Data abort

DCD 0 ; RESERVED

LDR PC,IRQ_Addr ; IRQ

LDR PC,FIQ_Addr ; FIQ

DATA

Reset_Addr: DCD __iar_program_start

Undefined_Addr: DCD Undefined_Handler

SWI_Addr: DCD SWI_Handler

Prefetch_Addr: DCD Prefetch_Handler

Abort_Addr: DCD Abort_Handler

IRQ_Addr: DCD IRQ_Handler

FIQ_Addr: DCD FIQ_Handler

From linker file:

define symbol __ICFEDIT_intvec_start__ = 0xF801FFB8;

place at address mem:__ICFEDIT_intvec_start__ { readonly section .intvec };

From interrupt c file:

__irq __arm void IRQ_Handler ( void ) { Interrupt_Handler(); }

Re: Getting IRQ_Handler to work for imx53

davidgolke — Thu, 11 Feb 2016 20:28:53 GMT

Also when I have all of this set up and I halt the debugger and try to run again, I see the following error:

"Could not start CPU core. (ErrorCode: -1)

Abort debug session?"

Re: Getting IRQ_Handler to work for imx53

igorpadykov — Sat, 13 Feb 2016 00:23:39 GMT

Hi David

attached is interrupt example for i.MX53 Quickstart board.

Best regards

igor

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Re: Getting IRQ_Handler to work for imx53

davidgolke — Mon, 15 Feb 2016 15:24:22 GMT

I am getting the error "Error[40]: Bad instruction" from trying to use "AREA" in startup.s and stack.s. I'm guessing this is because the project I'm working with isn't using any library files other than those in my project.

Re: Getting IRQ_Handler to work for imx53

davidgolke — Mon, 15 Feb 2016 16:46:10 GMT

I am getting the following errors on the following lines:

Error[40]: Bad instruction stack.s 3

Error[40]: Bad instruction stack.s 9

These are lines

AREA Stacks, DATA, NOINIT

top_of_stacks SPACE 1