topic Re: MPC5604s supervisor mode in MPC5xxx

MPC5604s supervisor mode

mhogun — Wed, 15 Mar 2017 06:03:37 GMT

Hi All,

I am trying to set D_FLASH bit in the Functional Event Reset Disable Register (RGM_FERD),but the value is not reflecting in the register .

In datasheet it is mentioned as ,

It can be accessed in read/write in either supervisor mode or test mode.It can be accessed in read only in user mode.

I want to generate an interrupt request when a code or data flash fatal error occurs

Please guide me to resolve the above issues.

davidtosenovjan — Wed, 15 Mar 2017 10:51:44 GMT

Hi, this bit is read only (W field is grey) as you can see in the screenshot below:

It means you cannot generate interrupt in this case and device always will be reset.

mhogun — Wed, 15 Mar 2017 14:52:11 GMT

Thanks David.

I have another question to ask.

I am trying to set D_CMU0_FHL bit in the Functional Event Reset Disable Register (RGM_FERD),but the value is not reflecting in the register .

In datasheet it is mentioned as ,

It can be accessed in read/write in either supervisor mode or test mode.It can be accessed in read only in user mode.

I want to generate an interrupt request when a clock frequency higher/lower than reference.

How to enter into supervisor or test mode in mpc5604s .

davidtosenovjan — Thu, 16 Mar 2017 12:36:52 GMT

"Each byte can be written only once after power-on reset."

I have just tried to modify the bit immediately after Power-on-reset and I was capable to modify register content.

davidtosenovjan — Thu, 16 Mar 2017 12:39:55 GMT

Switching between supervisor/user mode I have described here, but I don't think it is the reason of your issue:

mhogun — Thu, 23 Mar 2017 04:35:51 GMT

Hi David,

I have tried to modify the register but it was not happening. Whether we need to modify the register in startup code ?

Can u please share the code which you have used to change the register?

Thank you in advance.

mhogun — Fri, 05 May 2017 09:29:25 GMT

I have tried to modify the register but it was not happening. Whether we need to modify the register in startup code ?

Can u please share the code which you have used to change the register?

Thank you in advance.