CCS/LAUNCHXL-CC1352R1: Writing default value to flash.

Robert Galon

Intellectual 435 points

Part Number: LAUNCHXL-CC1352R1

Tool/software: Code Composer Studio

Hi!

Environment:

CC1352R1 HW Rev. B.
CCS 10
GCC 9.2.1
SDK 4.20.00.35

Problem:

In my project I'm using NVS driver to write and read data within flash memory. Also I have array of data with default value which I want to write to same memory region, but I want to do that only once when I'm flashing my program.

I found one option for TI compiler: #pragma LOCATION(flashData, NVS_REGIONS_BASE); but it's not working for GCC compiler. How can I do that?

Robert.

over 5 years ago

0 daniel_o over 5 years ago

TI__Genius 10610 points

Robert,

From NVS driver documentation, available here:

https://software-dl.ti.com/simplelink/esd/simplelink_cc13x2_26x2_sdk/3.40.00.02/exports/docs/tidrivers/doxygen/html/struct_n_v_s_c_c26_x_x___h_w_attrs.html

The code documentation shows you how to set the compiler parameters for NVS, which are different on each compiler.

#elif defined(__GNUC__)
//
//  Place the flash buffers in the .nvs section created in the gcc linker file.
//  The .nvs section enforces alignment on a sector boundary but may
//  be placed anywhere in flash memory.  If desired the .nvs section can be set
//  to a fixed address by changing the following in the gcc linker file:
//
//  .nvs (FIXED_FLASH_ADDR) (NOLOAD) : AT (FIXED_FLASH_ADDR) {
//       *(.nvs)
//  } > REGION_TEXT
//
__attribute__ ((section (".nvs")))
char flashBuf[REGIONSIZE];
#endif

Regards,

Daniel

Code Composer Studio™︎

Code Composer Studio forum

CCS/LAUNCHXL-CC1352R1: Writing default value to flash.