Preventing flash memory erasure when launching debugger

Nikhil Kant

Expert 1130 points

Other Parts Discussed in Thread: TM4C123GH6PM

Hello,

CCSV6.1.0

Stellaris ICDI

EK-TM4C123 Launchpad (Part no TM4C123GH6PM)

I am using a section of the flash memory of the device for non volatile storage. I have the linker command file configured so that it does not place any code/constants

in this portion. The program works succesfully. However when I make modifications to my code and reload it, the debugger erases the entire flash. Is it possible to configure the debugger to erase only defined sections of the flash whenever the program is rebuilt or reloaded and how?

Regards

over 10 years ago

0 Chester Gillon over 10 years ago

Guru 92251 points

Nikhil Kant said:
Is it possible to configure the debugger to erase only defined sections of the flash whenever the program is rebuilt or reloaded and how?

To configure how the flash is erased by the debugger use the CCS Project Properties -> Debug -> Flash Settings.

For a new project the default settings are to erase the entire flash.

To erase only defined sections you can either:

a) Leave the "Erase Method" as "Use the Erase Options Specified Below" and change "Erase" to "By Address Range". The start and end address to erase must be manually specified in the "Erase" options.

b) Change the "Erase Method" to "Necessary Pages Only". CCS will then only erase the flash pages to which the linker has allocated storage for.

0 AartiG over 10 years ago in reply to Chester Gillon

TI__Guru**** 173310 points

Just FYI, the information provided by Chester is also documented here:

http://processors.wiki.ti.com/index.php/Debug_Handbook_for_CCS#Configuring_Flash_Settings_in_CCS

Code Composer Studio™︎

Code Composer Studio forum

Preventing flash memory erasure when launching debugger