MSPM0G1519: Can't seem to use 128k SRAM ?

The top of mspm0g3519.cmd says:

/*
 * Note: SRAM on this device is continuous memory but partitioned in the 
 * linker into two separate sections. This is to account for the upper 64kB
 * of SRAM being wiped out upon the device entering any low-power mode 
 * stronger than SLEEP. Thus, it is up to the end-user to enable SRAM_BANK1 for
 * applications where the memory is considered lost outside of RUN and SLEEP Modes.
 */

If you don't plan to use the lower-power modes, I suppose you can combine the two banks (double the size of SRAM_BANK0, delete SRAM_BANK1). Otherwise you'll probably have to put any "expendable" variables in a separate section and put them ">SRAM_BANK1".

I found mspm0g3519.cmd in "C:\ti\ccs2001\ccs\ccs_base\arm\include". Historically CCS would put a copy of this in your project, but if you're using sysconfig, it generates instead a "device_linker.lds" (in "Generated Source").

To edit this:

1) Copy device_linker.lds to your source directory (up one level).

2) Turn off "Project Configuration Files->Linker File Generation". [The next build will delete the .lds file, thus the need for step (1).]

3) I expect the actual change would look like:

[before:]

    SRAM_BANK0      (RWX) : ORIGIN = 0x20200000, LENGTH = 0x00010000
    SRAM_BANK1      (RWX) : ORIGIN = 0x20210000, LENGTH = 0x00010000

[after:]

    SRAM_BANK0      (RWX) : ORIGIN = 0x20200000, LENGTH = 0x00020000

I just tried this and it built. I don't have a G3519 to run it on.

Hi Philip,

You can also click on exclude in build, shown as below:

Then copy the generated lds files and paste it into main project path.

B.R.

Sal