S32K314 app jump to bootloader question

[Faith-Herio]

hellow,I encountered a rather tricky problem. I am using BootLoader+APP mode on S32K314. The same code works fine when the BootLoader jumps to the APP, but it triggers a hard fault when the app jumps back to the BootLoader. During debugging, I found that there was an error in setting up the stack. I can't think of a good solution for this issue and would like to ask if anyone has any suggestions?

The code and the values of the variables look like this:

    addr =0x00400000

    static void (*jump_to_bootloader)(void);

    static uint32_t stack_pointer;

    uint32_t appEntry, appStack;

    appStack = *(uint32_t *)(addr + 4096);

    appEntry = *(uint32_t *)(addr + 4096 + 4);

    jump_to_bootloader = (void (*)(void))appEntry;

    stack_pointer = appStack;

    S32_SCB->VTOR = (uint32_t)addr;

    __asm volatile("MSR msp, %0\n" : : "r"(stack_pointer) : "sp");

    __asm volatile("MSR psp, %0\n" : : "r"(stack_pointer) : "sp");

    jump_to_bootloader();

S32K3

[shuaige]

hello ，can you teach me how to address this question？Thank you？Why not jump?

[Faith-Herio · Accepted solution]

已解决