RE: Hardfault handler error ?

RixtronixLAB — Wed, 08 Dec 2021 10:01:48 GMT

I got the answer

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For instance, if you use Keil you should only include app_error_handler_keil.c. Inline assembly is handled differently in each compiler, which is why different files/code includes are required.

If you try to include all these files in one project, it will fail on the two files that are not supported by your compiler.

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https://devzone.nordicsemi.com/f/nordic-q-a/52772/app_error_handler_gcc-c-app_error_handler_iar-c-asm-expected-a-error

RE: Hardfault handler error ?

RixtronixLAB — Wed, 08 Dec 2021 09:45:18 GMT

void HardFault_Handler(void)
{
    __ASM volatile(
    "   tst lr, #4                              \n"

    /* PSP is quite simple and does not require additional handler */
    "   itt ne                                  \n"
    "   mrsne r0, psp                           \n"
    /* Jump to the handler, do not store LR - returning from handler just exits exception */
    "   bne  HardFault_Handler_Continue         \n"

    /* Processing MSP requires stack checking */
    "   mrs r0, msp                             \n"

    "   ldr   r1, =__StackTop                   \n"
    "   ldr   r2, =__StackLimit                 \n"

    /* MSP is in the range of the stack area */
    "   cmp   r0, r1                            \n"
    "   bhi   HardFault_MoveSP                  \n"
    "   cmp   r0, r2                            \n"
    "   bhi   HardFault_Handler_Continue        \n"

    "HardFault_MoveSP:                          \n"
    "   mov   sp, r1                            \n"
    "   mov   r0, #0                            \n"

    "HardFault_Handler_Continue:                \n"
    "   ldr r3, =%0                             \n"
    "   bx r3                                   \n"
    "   .ltorg                                  \n"
    : : "X"(HardFault_c_handler)
    );
}