MSPM0G3519: Possible to erase a bank except its first 64KB

Wayne Huang

Genius 16325 points

Part Number: MSPM0G3519

Tool/software:

Hi champs,

I am asking this for our customer.

We are aware that erase commands includes DL_FLASHCTL_COMMAND_SIZE_SECTOR and DL_FLASHCTL_COMMAND_SIZE_BANK.

The user wants to erase most sectors, but it takes too much time if they erase sectors one by one.

1. It is possible to erase a bank and mask some sectors in one command?

That is, erase bank1 and mask its first 64KB in one command?

2. In this case, the total erase time should still be the bank erase time?

That is, 220 ms (max).

3. If not, would you please how to erase a bank except its first 64KB in a quick way?

4. Do we have any doc/codes to show how to use flash related API, especially for bank erase?

1 month ago

0 Helic Chi 1 month ago

TI__Mastermind 19317 points

Wayne Huang said:
1. It is possible to erase a bank and mask some sectors in one command?

No.

Wayne Huang said:
3. If not, would you please how to erase a bank except its first 64KB in a quick way?

For erase operation, only two choice, bank or sector.

Wayne Huang said:
4. Do we have any doc/codes to show how to use flash related API, especially for bank erase?

C:\ti\mspm0_sdk_2_05_00_05\examples\nortos\LP_MSPM0G3519\driverlib\flashctl_multiple_size_write

0 Wayne Huang 1 month ago in reply to Helic Chi

TI__Genius 16325 points

Hi Helic,

Therefore, in this case, does the user has to erase all sectors one by one,

The total erase time is 20 ms (per sector) x how many sectors.

Is my understanding correct?

0 Helic Chi 1 month ago in reply to Wayne Huang

TI__Mastermind 19317 points

But it seems there is another method to mask these sectors:

TRM: 1.6 NONMAIN_G351x_G151x Registers : 41C0000 Ch SWPMAINLOW Static write protection policy for the first 32kB of flash memory. When protected, sectors will not be available for program or erase by either the bootloader or application code

0 Wayne Huang 1 month ago in reply to Helic Chi

TI__Genius 16325 points

Hi Helic,

You meant only the first 32KB can be protected. But if the user has different size other than the first 32KB, then they have to erase them one by one.

Is it right?

Besides, would you please confirm the total time? It's 20 ms (per sector) x how many sectors. Right?

+1 Helic Chi 1 month ago in reply to Wayne Huang

TI__Mastermind 19317 points

There are another register right behind this one. customer can define the static write protection region by themselves.

Wayne Huang said:
Besides, would you please confirm the total time? It's 20 ms (per sector) x how many sectors. Right?

In theory, yes, but in reality it doesn't take that long.

Arm-based microcontrollers

Arm-based microcontrollers forum

MSPM0G3519: Possible to erase a bank except its first 64KB