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常见问答

FAQ

How does a user check the state before entering hard fault when a hard fault occurs on a M0/M4 microcontroller (MCU)?  Issue Date：2015-10-16

Since the hard fault is an exception interrupt, user can search code address from the memory address recorded by a stack pointer before entering a hardfault handler, and find the hard fault according to the address.

The steps are as follows:

  1. Get a starting address of the stack pointer in Debug mode;
  2. Enter the starting address to query stack of information in the memory;
  3. The stacked 7th address is the code address before entering an interrupt;
  4. View the content of the code address in the program window, which is the state before entering the hard fault. 

•  Keil RVMDK:

•  IAR EWARM:

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Applications:
Function: Software and Tools,Development-Environment,IAR,Keil

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