LAUNCHXL-CC1312R1: nvs location

Hi Gullik,

Could you post your NVS SysConfig settings?

...

I especially wonder what kind of region type you used.

Regards,

Arthur

I click on the .sysconfig file and get a menu

I click on the NVS driver item

I get a menu with config_nvs_0

use hardware            default none

NVS type            default internal

NVS implementation (grayed out cann not set ) NVSCC26XX

Internal flash

Region type       default Generated

Region Base     0x48000         // tried default first

Region size       0x2000

Sector size 0x2000 (default)

Code is taken from the examples found by clicking on the ? in NVS menu

Hi Gullik,

What if you used the nvsinternal example instead, do you see any difference in the behavior?

Regards,

Arthur

But I DO!!

Config_nvs_0

use hardware       none

NVS type             internal

NVS implementation NVSCC26XX (greyed out)

Internal flash

Region type       Generated

Region Base       0x48000 (since it was 0 initially, changed it when I became unsure)

Regin size          0x2000 (was default)

Sector size         0x2000 (default, greyed out cannot change)

CODE

#include <ti/drivers/NVS.h>

// define nvs

NVS_handle nvsRegion;

NVS_Params nvsParams;

main {

code....

NVS_Params_init(&nvsParams);

code....

if(strcmp(cline,"save")) {

status = nvsRegion = NVS_open(CONFIG_NVS_0, &nvsParams);

status = NVS_read(nvsRegion, 0, buf, 64);

for(i=0;i<64;i++) {

     xprint_char(buf[i]);

     xprint(" ");

}

this prints always a series of numbers ....not FF FF FF

It seems that when using GNUC the flash are must be manually

written into the linker script, sysconfig does not do that???

Puzzled

Gullik

No matter which example I try, the region Base is not what I defined in syscfg.

When I examine the handle structure I have a member .object and it will not display but says

"Error cannot load from non-primitive location"

I can set the regionAttrs.regionBase to 0x48000, but that does not help,

i still get a string of wierd data, rather than my expected

this is nortos and gcc

Well, it seems the examples description is a little dated, and I cannot

figure out howto do this correctly.

It seems the nvs region is defined by

static const NVSCC26XX_HWattrs[1] 0 {

     {

       .regionBase = (void *) flashBuf0,

       .regionSize = 0x2000,

     },

};

this buffer is not defined anywhere else, and does not show up in the link map.

So, I have to define the flashBuf0 myself, and locate it at the desired address,

which in my case is what I answered in the .sysconfig

However, what is the syntax using GCC in the CCS environment?

the compiler refuses to understand the attributes I give, specificaly the at attribute.

char flashBuf0[0x2000] __attribute__ ((at(0x48000)));

Gullik