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Hard Fault on cortex M3 NXP

Note: This was originally posted on 20th June 2011 at http://forums.arm.com

I've coded a small program to download in a usb memory some data acquired from the LPC1768 Cortex M3.
I use IAR EW to code and J-Link LITE to program/debug the code.

So, when I test my program with debugger connected (either in debug or release mode) it works fine.

When I program the micro and run it without the debugger connected I obtain an Hard Fault exception.

When I check the value of HFSR it return 0x80000000 -> DEBUGEVT = 1 ?

Why? Where is my fault?

Thanks.

Alessandro

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Joseph Yiu over 12 years ago

Note: This was originally posted on 20th June 2011 at http://forums.arm.com

If DFSR is 0x2, it means BKPT instruction executed.

Iin the hardfault handler, you can try output the stacked PC value to your LCD.
(http://embdev.net/topic/177024)

From the stacked PC value, you should see what instruction the code was running.

regards,
Joseph
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Joseph Yiu over 12 years ago

Note: This was originally posted on 20th June 2011 at http://forums.arm.com

If DFSR is 0x2, it means BKPT instruction executed.

Iin the hardfault handler, you can try output the stacked PC value to your LCD.
(http://embdev.net/topic/177024)

From the stacked PC value, you should see what instruction the code was running.

regards,
Joseph
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