void  Startup_Init(void)
{
}
 


typedef void (*jump_callback)(void);

int jump_app(int app_addr) 
{ 
    int jump_addr;
    jump_callback cb;
    //if (((*( int*)app_addr) & 0x20000000 ) == 0x20000000) 
    {  
        jump_addr = *(int*) (app_addr + 4);  //ResetHandler
        cb = (jump_callback)jump_addr;  
        //__set_MSP(*(uint32_t*)app_addr);          
        /*
        __asm("LDR  R0, =__STACK_TOP",)
        __asm("LDR  R0, [R0]")
        __asm("MSR MSP, R0")
        __asm("nop");        */
        cb();
        return 1;
    }  
    cb();
    return  0; 
}

void  Watchdog_Disable(void)
{ 
}

int main(void)
{ 
    jump_app(0x00040000);
    while(1){};
}