problem in CCS Platinum v 3.3 Tutorial

J D posted on 4 Nov 2009 2:30 AM

rated by 0 users

Hello All,

I have been practicing CCS by going through the tutorial provided from help menu

In the topic "Developing A Simple Program", a project \"volume1" is used for explanation. When I follow the steps ,the program builds properly and a .outfile is generated as expected.Let me also mention that in the CCS Setup I am running in F28027(Piccolo)  Simulator mode.

Now the problem strikes when i triy to load the program.Loading fails and an error message is generated as follows:

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.
Trouble Writing Memory Block at 0x3f8488 on Page 1 of Length 0x1a: Cannot access memory address 0x3F8488.

The above mentioned memory location ,when I checked out in Piccolo datasheet, is labelled as L0 SARAM.

Here is the linker cmd file for the project:

/****************************************************************************/
/*   volume.cmd - Sample linker command file for F28xx devices              */
/*                                                                          */
/*   Description: This file is a sample F28xx linker command file that can  */
/*                be used for linking programs built with the TMS320C2000   */
/*                C Compiler. Use it as a guideline; you may want to change */
/*                the allocation scheme according to the size of your       */
/*                program and the memory layout of your target system.      */
/****************************************************************************/
-stack 400

-heap 400
MEMORY
{
   PAGE 0 : PROG(R)     : origin = 0x3E8000, length = 0x10000
   PAGE 0 : BOOT(R)     : origin = 0x3FF000, length = 0xFC0  
   PAGE 0 : RESET(R)    : origin = 0x3FFFC0, length = 0x2
   PAGE 0 : VECTORS(R)  : origin = 0x3FFFC2, length = 0x3E

   PAGE 1 : M0RAM(RW)   : origin = 0x000000, length = 0x400
   PAGE 1 : M1RAM(RW)   : origin = 0x000400, length = 0x400
   PAGE 1 : L0L1RAM(RW) : origin = 0x008000, length = 0x2000
   PAGE 1 : H0RAM(RW)   : origin = 0x3F8000, length = 0x2000
}
 
SECTIONS
{
   /* 22-bit program sections */
   .reset   : > RESET,   PAGE = 0
   .vectors : > VECTORS, PAGE = 0
   .pinit   : > PROG,    PAGE = 0
   .cinit   : > PROG,    PAGE = 0
   .text    : > PROG,    PAGE = 0

   /* 16-Bit data sections */
   .const   : > L0L1RAM, PAGE = 1
   .bss     : > L0L1RAM, PAGE = 1
   .stack   : > M1RAM, PAGE = 1
   .sysmem  : > M0RAM, PAGE = 1
   .cio     : > M0RAM, PAGE = 1

   /* 32-bit data sections */
   .ebss    : > H0RAM, PAGE = 1
   .econst  : > H0RAM, PAGE = 1
   .esysmem : > H0RAM, PAGE = 1
}

Please help as to what changes need to be made.

Thanks in advance

Regards,

J D