Hi
When debugging the CSEc module of the S32K1xx chip, the chip is locked, the debugger cannot be connected, and cannot be unlocked.
CPU:S32K118
Debugger:IC5000
Fault phenomenon:1. The CSEc partition fails to be destroyed. 2. The CPU locks, all registers are inaccessible, and the winidea debugger is displayed offline.
Method of fault recurrence:
1.First execute the partition code, allocate space for the CSEc module, and then change another program to brush into the same CPU, and then use the command to erase the csec partition can not be executed correctly, this process has not changed MASTER_Key, but can not clear the partition of FlexNvm.
2.Since it could not be erased, I tried to directly insert 0xFF to the flexnvm address to erase, and then execute mass erase, resulting in MCU lock, how to unlock, using the debugger can not unlock, winidea using unsecure return failure.
I have asked for help many times on the forums and ticket post, hoping for technical support to help solve this problem, especially phenomenon 1, which is the primary reason why I locked the MCU. Thank you!
