Random hangs when resetting, porting to LM3S6965

[L._Andrzejewski]

Hi,

I am getting a strange behavior from a LM3S6965 board when pressing the reset button. On an average within 5 resets, my application will freeze. It doesn t do that with the luminary example projects, so it s not a hardware problem. It isn t my application neither as I loaded it into an LM3S8962 and it runs perfectly.I tried to debug when the board hangs and found out that it end up in IntDefaultHandler:

   222: ;******************************************************************************
   223: ;
   224: ; This is the code that gets called when the processor receives an unexpected
   225: ; interrupt.  This simply enters an infinite loop, preserving the system state
   226: ; for examination by a debugger.
   227: ;
   228: ;******************************************************************************
   229: IntDefaultHandler
--> 0x000000FC E7FE      B        0x000000FC
   230:         B       IntDefaultHandler
0x000000FE E7FE      B        0x000000FE
0x00000100 0380      LSLS     r0,r0,#14
0x00000102 01C0      LSLS     r0,r0,#7
                 _main_stk:

The 8962 and 6965 are almost identical except for some pins definitions ( correct me if I am wrong) wich should be taken care of by the LM3S_Pins.c :

#ifndef LM3S_PART_DEFINED
#define PART_LM3S6965

and in ARM_Serial.c

#define PART_LM3S6965  // TODO: This needs to be defined at the project level

All interrupts seem the same.

Any thoughts?

Thank you,

Lukasz

[Will_S.]

Hi Lukasz,

The LM3S6965 is a Tier 2 processor, and so only certain functionality is supported natively by LabVIEW for ARM. You can find these supported features here: http://zone.ni.com/devzone/cda/tut/p/id/7066

Most likely, there is certain functionality that must be ported for your specific microcontroller. For instructions on how to do that, you can start here:

http://zone.ni.com/devzone/cda/tut/p/id/6994