MSP430FR6989: About FRAN Write Protect

user5799068

Part Number: MSP430FR6989

Hello

I am developing it using CCS.
With your answer I can write protect now.

Please tell me about segmenting your answer.
Currently I would like to set the segment as follows.
MPUSEGB1 = 0x0F80; // B1 = 0x0F800
MPUSEGB2 = 0x1A00; // B2 = 0x1A000
It is set to execute this setting programmatically.
With this setting,
Segment 1: 0x4400 - 0xF7FF
Segment 2: 0xF800 - 0x1 BFFF
Segment 3: 0x1C000 - 0x23FFF
Will it be?
Is it not reflected unless it is set in CCS mpu configure window?

It is not possible to write even if you try to write to 0x10000 or more at present.
Since FRAM of MSP430FR6989 is 0x4400 - 0x23FFF,
I think that it can be set but it can not be written.
Please let me know about additional questions.

Regards.

over 7 years ago

0 Gary Gao over 7 years ago

TI__Mastermind 39840 points

You can just sent your questions in the same thread. For the border value you should follow the rules below:

Best regards

Gary

0 user5799068 over 7 years ago in reply to Gary Gao

Intellectual 320 points

Hello

I already saw the page you taught.

Besides that I refer to Table 9-3. MPU Border Selection Example 64 KB.
Looking at this

Segment border address = 0x1A000 -> MPUSEGBx = (0x1A000 >> 4) = 0x1A00

MPUSEGB 2 = 0x1A00;
Setting the definition of variables may receive a not write.

Regards.

0 Gary Gao over 7 years ago in reply to user5799068

TI__Mastermind 39840 points

Hi

Sorry for miss click the solved button.
What do you mean by receive a not write? Where you see it?

Best regards
Gary

0 user5799068 over 7 years ago in reply to Gary Gao

Intellectual 320 points

I am using CCS to check the register value. Register values are set as follows.
MPUSEBB 1 = 0x0F80
MPUSEBB 2 = 0x1A00

In addition, although we have set the variable at 0x1A000, we can not write to the specified address. When checking with the CCS memory map, the variable name is allocated to 0x1A000 but the value is written from 0x0A000 address.
When reading goes to the written value, it will go to 0x0A000 address instead of 0x1A000 address.
Do I need other settings?

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MSP430FR6989: About FRAN Write Protect