AM2432: Question regarding Fault Handler and Interrupt Number

Hong Zhang

Part Number: AM2432

I am working on the fault handler for the AM2432's R5F core, is there a reference design that I could refer to? I could not find the interrupt number reference page, which would list the interrupt number for abort. Could you please help to point to the correct document and page for this information?

over 2 years ago

0 Frank Livingston over 2 years ago

TI__Mastermind 29348 points

Hi Hong,

Hong Zhang said:
is there a reference design that I could refer to?

I'm unaware of any reference design.

Please see: https://developer.arm.com/documentation/den0042/a/Exceptions-and-Interrupts

For FreeRTOS

the vector table is defined in: <SDK>/source/kernel/freertos/dpl/r5/HwiP_armv7r_vectors_freertos_asm.S
exception and interrupts handlers are defined in: <SDK>/source/kernel/freertos/dpl/r5/HwiP_armv7r_handlers_freertos.c

For No-RTOS

the vector table is defined in: <SDK>/source/kernel/nortos/dpl/r5/HwiP_armv7r_vectors_nortos_asm.S
exception and interrupts handlers are defined in: <SDK>/source/kernel/nortos/dpl/r5/HwiP_armv7r_handlers_nortos.c

Notice the SDK has "hooks" for handling different kinds of exceptions, i.e. some of the handler functions are just spinning in place. Code can be added to these functions to implement exception handling.

void __attribute__((interrupt("UNDEF"), section(".text.hwi"))) HwiP_undefined_handler(void)
{
    volatile uint32_t loop = 1;
    while(loop)
        ;
}

Regards,
Frank

0 Hong Zhang over 2 years ago in reply to Frank Livingston

Intellectual 782 points

Hello Frank,

Thanks a lot for the information.

If we would like to have customized HwiP_armv7r_handlers_freertos.c, does it mean that we need to re-compile our own nortos.am243x.r5f.ti-arm-clang.debug.lib?

Hong

+1 Frank Livingston over 2 years ago in reply to Hong Zhang

TI__Mastermind 29348 points

Hi Hong,

Adding to the the information I shared previously: