In one project we are able to write in EEPROM Memory but in another project we couldn't write.

[Balakrishna24]

Hi

We are unable to write in EEPROM Memory in MPC5746C Microcontroller.

We are using NVM Block Address is 0x00F94000 to 0X00F97FFF.

Is there any alternative process to write in memory. we are getting difference in Lock0 register.

Any insights from anyone please?

[Balakrishna24]

Hi @davidtosenovjan Thanks for your response.

Actually when flashing is completed then we could able to see the written memory in NVM Block Address is 0x00F94000 using MPC5746C Microcontroller.

but when we try to write in runtime we are not able to write, we are using autosar (classic platform), so any protection to write in the NVM Memory or any other configuration need to be done. suggest me please.

[davidtosenovjan]

Do you disabled cache or set cache inhibited attribute for this memory area?

[Balakrishna24]

Hi @davidtosenovjan 

I am unable to see cache or set cache inhibited attribute for this memory area, could you please share any document for reference, I am using MPC5746C microcontroller.

I am unable to see cache relevant peripherals in trace32 debugger also. 

[davidtosenovjan]

Here you may see example dealing with MPU, what's the module you would use for setting of cache inhibited attribute:

https://community.nxp.com/t5/MPC5xxx-Knowledge-Base/Example-MPC5748G-SMPU-initialization-GHS614/ta-p...

[davidtosenovjan]

I don't understand you too much. You mean alternative to what? How you are programming the flash?