TMS320F28035-EP: Flashing User OTP Memory on F28035 MCU

Kiran,

The CCS flash plug-in should take care of this if you have defined memory with contents at the User OTP locations when you do a program load.  Are you saying that with a supported .out file that CCS fails to program the OTP correctly?

Since OTP is one time only, there won't be an option to erase the OTP in the plug in dialog box.

Let me know if this answers your question, or if CCS v20 is blocking the OTP write when you load to that region.

Best,

Matthew

Hi Matthew,

I'm getting this error

C28xx: Loader: One or more sections of your program falls into a memory region that is not writable. These regions will not actually be written to the target. Check your linker configuration and/or memory map.
C28xx: Flash Programmer: Error encountered when writing to flash memory
C28xx: File Loader: Memory write failed: Unknown error
C28xx: GEL: File: C:\Users\E004\workspace_ccstheia\f2803x_flash_kernel\Debug\f2803x_flash_kernel.out: Load failed. I'm using SPRAAQ3 as reference.
The following is the linker file, I'm using. 

MEMORY
{
PAGE 0 : 
    
	    LINBOOTINIT : origin = 0x3D7800, length = 0x000020
	    LINBOOT     : origin = 0x3D7820, length = 0x000400  

PAGE 1 : 
        BOOT_RSVD   : origin = 0x000000, length = 0x000050     /* Part of M0, BOOT rom will use this for stack */
        RAMM0       : origin = 0x000050, length = 0x0003B0     /* on-chip RAM block M0 */
        RAMM1       : origin = 0x000400, length = 0x000400     /* on-chip RAM block M1 */
        RAML2       : origin = 0x008C00, length = 0x000400     /* on-chip RAM block L2 */
        RAML3       : origin = 0x009000, length = 0x001000     /* on-chip RAM block L3 */
        /*FLASHB      : origin = 0x3F4000, length = 0x002000     /* on-chip FLASH */
}
 
SECTIONS
{
         .InitBoot    : > LINBOOT,  PAGE = 0
         .text        : > LINBOOT,      PAGE = 0
         .stack       : >  RAMM0       PAGE = 1
         .ebss        : >> RAMM1 | RAML2 | RAML3,       PAGE = 1
         LIN_BOOT     : > LINBOOTINIT,     PAGE = 0, ALIGN(4)
     
}

1)Can you try Uniflash to see if it gives the same error? 

2)I looked at the GEL file included for CCS(C:\ti\ccs2040\ccs\ccs_base\emulation\gel\f28035.GEL) the only thing I am noticing is that OTP section is marked as writable, while flash is marked as read only(true in the sense you need to invoke the Flash API in order to program it).  For the 2 lines that map out the OTP, can you change

    GEL_MapAdd(0x3d7800,0,0x400,1,1);           /* OTP             */

to 

    GEL_MapAdd(0x3d7800,0,0x400,1,0);           /* OTP             */

I'm wondering if CCS is using this to determine if it needs to invoke the flash utility, and mis-interprets the "1,1" as the location being RAM.

menuitem "Initialize Memory Map";

hotmenu F28035_Memory_Map()
{
    GEL_MapReset();
    GEL_MapOn();

    /* Program memory maps */
    GEL_MapAdd(0x0,0,0x400,1,1);                /* M0 SARAM        */
    GEL_MapAdd(0x400,0,0x400,1,1);              /* M1 SARAM        */
    GEL_MapAdd(0xD00,0,0x100,1,1);              /* PIEVECT(DSPBIOS)*/
    GEL_MapAdd(0x8000,0,0x800,1,1);             /* L0 SARAM        */
    GEL_MapAdd(0x8800,0,0x400,1,1);             /* L1 SARAM        */
    GEL_MapAdd(0x8c00,0,0x400,1,1);             /* L2 SARAM        */
    GEL_MapAdd(0x9000,0,0x1000,1,1);            /* L3 SARAM        */
    GEL_MapAdd(0x3d7800,0,0x400,1,1);           /* OTP             */
    GEL_MapAdd(0x3d7c80,0,0x040,1,1);           /* Device Cal      */
    GEL_MapAdd(0x3d7cc0,0,0x040,1,1);           /* Boot Get Mode   */
    GEL_MapAdd(0x3d7e80,0,0x001,1,0);           /* PARTID value    */
	GEL_MapAdd(0x3d7e82,0,0x02F,1,0);           /* Calibration Data*/
    GEL_MapAdd(0x3e8000,0,0x10000,1,0);         /* FLASH           */
    GEL_MapAdd(0x3f8000,0,0x400,1,1);           /* L0 SARAM Mirror */
    GEL_MapAdd(0x3fe000,0,0x2000,1,0);          /* BOOT ROM        */

    /* Data memory maps */
    GEL_MapAdd(0x0,1,0x400,1,1);                /* M0 SARAM        */
    GEL_MapAdd(0x400,1,0x400,1,1);              /* M1 SARAM        */
    GEL_MapAdd(0x800,1,0x1800,1,1);             /* PF0             */
    GEL_MapAdd(0x6000,1,0x0400,1,1);            /* PF1-A           */
    GEL_MapAdd(0x6400,1,0x0600,1,1);            /* PF3             */
    GEL_MapAdd(0x6A00,1,0x0600,1,1);            /* PF1-B           */
    GEL_MapAddStr(0x7000,1,0x1000,"R|W|AS2",0); /* PF2             */
    GEL_MapAdd(0x8000,1,0x800,1,1);             /* L0 SARAM        */
    GEL_MapAdd(0x8800,1,0x400,1,1);             /* L1 SARAM        */
    GEL_MapAdd(0x8c00,1,0x400,1,1);             /* L2 SARAM        */
    GEL_MapAdd(0x9000,1,0x1000,1,1);            /* L3 SARAM        */
    GEL_MapAdd(0x3d7800,1,0x400,1,1);           /* OTP             */
    GEL_MapAdd(0x3d7c80,1,0x040,1,1);           /* Device Cal      */
    GEL_MapAdd(0x3d7cc0,1,0x040,1,1);           /* Boot Get Mode   */
    GEL_MapAdd(0x3d7e80,1,0x001,1,0);           /* PARTID value    */
	GEL_MapAdd(0x3d7e82,1,0x02F,1,0);           /* Calibration Data*/
    GEL_MapAdd(0x3e8000,1,0x10000,1,0);         /* FLASH           */
    GEL_MapAdd(0x3f8000,1,0x0800,1,1);          /* L0 SARAM Mirror */
    GEL_MapAdd(0x3fe000,1,0x2000,1,0);          /* BOOT ROM        */
}

Getting the same error

Kiran,

I will need to loop in some of the flash tools team.  Please give us a day or so to get them in the loop.

Best,

Matthew