MSPM0G3507: How to store data in lower flash?

stanley liu

Intellectual 285 points

Part Number: MSPM0G3507
Other Parts Discussed in Thread: SYSCONFIG, MSPM0L1306

Tool/software:

Hi expert

Until now my project flash memory usage is about 100KB, and i use 126KB~127KB(P2)to store my data

(calibrate value, customer data etc.) and i don't make any SWP setting in sysconfig.

in my understanding the main code (100KB) doesn't hit NO.126KB, so this method seem safe, am i right?

When i saw the datasheet(P1), the remaining sectors erase/program cycle only available in 10k,

i think there is a risk for my project, so my question is:

(1) can i use 31KB~32KB(P3) to store my data? if yes, how to set in sysconfig?

(2) if (1) available, can i see 31KB~32KB describe in .map file?

thanks for your help.

over 1 year ago

+1 Gary Gao over 1 year ago

TI__Mastermind 39710 points

stanley liu said:
in my understanding the main code (100KB) doesn't hit NO.126KB, so this method seem safe, am i right?

Yes, it is no problem.

stanley liu said:
(1) can i use 31KB~32KB(P3) to store my data? if yes, how to set in sysconfig?

Yes, you can, but you need to make the change in the linker file, if you use CCS, you need to modify the cmd file, for example below cmd is to define code to address 0x00~0x1000 and 0x3000 ~ 0xFFF8

https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/908/8117.mspm0l1306.cmd

stanley liu said:
(2) if (1) available, can i see 31KB~32KB describe in .map file?

No, due to it is not be used, so you can write data into it.

0 stanley liu over 1 year ago in reply to Gary Gao

Intellectual 285 points

hi Gary

thanks for your reply, i check your cmd file, in my understanding

after compiler the code will spread in NO.1~4KB and 13~64KB,

user can store their data in NO.5~12KB, am i right?

256K_flash_address.pdf

0 Gary Gao over 1 year ago in reply to stanley liu

TI__Mastermind 39710 points

stanley liu said:
after compiler the code will spread in NO.1~4KB and 13~64KB,

user can store their data in NO.5~12KB, am i right?

yes

0 stanley liu over 1 year ago in reply to Gary Gao

Intellectual 285 points

thanks for your reply, i will use NO.31~32KB to store my data.

below is my modify, but when i compiler, the cmd file will return to original status

do i need to make any setting?

0 Gary Gao over 1 year ago in reply to stanley liu

TI__Mastermind 39710 points

You need to disable the cmd file generation by sysconfig as below

add the modified cmd into your project directly.

0 stanley liu over 1 year ago in reply to Gary Gao

Intellectual 285 points

Hi Gary

thanks for your help, it's done, thanks again

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MSPM0G3507: How to store data in lower flash?