stm32 usb usb_init HardFault -

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i'm trying run virtual_com_port stm32_usb-fs-device_lib_v4.0.0. i'm using iar 7.3. buld ok, not run usb. started use debugger. in function 

void usb_init(void) {   pinformation = &device_info;   pinformation->controlstate = 2;   pproperty = &device_property;   puser_standard_requests = &user_standard_requests;   /* initialize devices 1 one */   pproperty->init(); }

on line pproperty = &device_property; debugger jumps exception handler hardfault_handler. problem? problem whith iar or settings?

you accesing memmory shouldn't. hardfault_handler default catches exceptions, configurable fault exceptions disabled. try turning on memmanage_fault:

scb->chcsr |= scb_shcsr_memfaultena_msk;  //set priority of memmanage fault (using cmsis):  nvic_setpriority(memorymanagement_irqn, *priority*);  //default name memmanage fault function is: void memmanage_handler(void);

after hardfault turn memmanage_fault. not much, gives better idea of dealing with.

also see link debugging hardfaults on iar.

i can't sure without seeing set device_property variable double check ok give it's memory address else.


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