s32k3 read DFLASH failed

[ZMY666777]

Hello, I tried to use Mem_43_InFls module in S32K311, I write test code to test the api of the module , and find that I can write and erase the DFLASH(0X10000000-0X1000FFFF) successfully, but when I try to read the data in DFLASH(such as the data in 0X10000000), the program will shut down.

ZMY666777_0-1726126803281.png

test code are shown above. I first use write api and can successfully write dflash. and I set readflag to 1 manually. And will fail to read dflash. after debug, I find the program will shut down when run '(*((uint8 *)(0x10000000)))'. I can read other address such as PFLASH. So I wonder what kind of reason will cause this problem.
Thanks!

[ZMY666777 · Accepted solution]

The problem is solved. The reason is that in my program the dflash is been protected by MPU. after disabling MPU the dflash can be read.