Hard fault occured when I read from S32K144 flash address 0x78400

[中当陈]

Product:S32K144 EVB

IDE:IAR for ARM 7.60.2

①：Where the hart fault occurred。The variable flashAddress=0x78400

②：Based on CFSR and HFSR，I found that MCU accessed a invalid address。

③：Then I watched memory range 0x78400--0x7840f,  the result was "-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --"。So it indicated that the memory is not accessible。

Can someone tell me why the memory is not  accessible please？

Best regards!

[danielmartynek]

Hi,

Please check FERSTAT[DFDIF] flag for Double-bit ECC errors.

Thanks,

Daniel

[中当陈]

Hi, Daniel

Thank you for your prompt  reply!

After I erased all the flash, the problem disappeared.So, I check the FERSTAT[DFDIF] flag, the flash is 0.

Best regards to you!