Unable to Halt ARM Core

I am using MAC7111 evaluation board for my development.

I am using J-Link for debugging the code with the help of IAR Embedded Work bench.

I was able to flash the code successfully once.

Next time when I tried to flash the code, The IDE is showing an error message saying that

"Unable to halt ARM Core"

Even I tried with "Hardware halt after delay" and "Hardware halt at 0"
options..it did not work
Please help me in overcoming this problem.

Thanks in advance,

Regards,
Naveen

More questions in this forum