CCS/LAUNCHXL-F280049C: Download RAM + FLASH or RAM only

Hi Ozio,

Yes I use a piece of the C2000 WARE but it’s my own project (not based on the examples).

For the linker: I use the CMD file from C2000 Ware (28004X_generic_ram.cmd) associated to another CMD file to switch some pieces of the code in Flash (Additional_commands_RAM.cmd)

Here in attachment you’ll find the MAP file for more details.

The goal of this configuration is:

1. Debugged code loaded in FLASH
2. Under debug function in RAM
3. .CINIT in RAM due to possible changes during debug

This is interesting when I’m able to download program only in RAM, download in FLASH when new debugged functions are switched in the Flash memory.

By this mean, I can gain time because I avoid to erase and program the FLASH memory.

When I work fully in FLASH, I found out also I’ve to set the option “Combine Sections during Program Load to increase performance”.

Otherwise the .text is split in several parts and there is an error regarding the non-blank memory.

Here some code used:

in Additional_commands_RAM.cmd

SECTIONS
{
   SINTBL                 : >>RAMM0 | RAMLS0 | RAMLS1 | RAMLS2 | RAMLS3 | RAMLS4,   PAGE = 0
   dclfuncs         : >> RAMLS0 | RAMLS1 | RAMLS2 | RAMLS3 | RAMLS4,   PAGE = 0
 
   DataLogSection   : >> RAMLS5 | RAMLS6 | RAMLS7,         PAGE = 1       align(2)
 
 
 
   /* Allocate IQ math areas: */
   IQmath           : > RAMLS0,     PAGE = 0            /* Math Code */
   IQmathTables     : > FLASH_BANK0_SEC0, PAGE = 0
 
   FLASHlibrary : {
        *rts2800_fpu32.lib (.text)
        *SYS_ml.lib <f28004x_gpio.obj, f28004x_sysctrl.obj, device.obj>  (.text)
   } >> FLASH_BANK0_SEC0 | FLASH_BANK0_SEC1 | FLASH_BANK0_SEC3, PAGE = 0
}

Looking forward to your feedback.

Best Regards,

Nico