Read APPROTECTSTATUS via firmware

[Barry]

Is it possible to read the value of  APPROTECTSTATUS via the firmware? It seems like the AP register in not memory mapped, so maybe not. But maybe there is some kind of work around. Thanks.

[Dmitry]

Hi,

you cannot read APPROTECTSTATUS but you can check whether MCU is under debug session, see here. In any case you can make hacker's life harder but cannot stop him from dumping you fw, disassembling it and disabling this check.