Error: EMIF: Access to 0x6ae0 is not expected in mode 1

user4372577

i`m a beginner from china and i have the same trouble as this topic said. When I debug a project based on C6701 in CCS 3.3 ,it says that:"Error: EMIF: Access to 0x6ae0 is not expected in mode 1 ". This is a part of my code:

.global checkaddress
.data
checkaddress .word 089ABCDEFh
.text
check1:
STW A5,*--B15(4)
STW A4,*--B15(4)
STW B4,*--B15(4)
MVKL checkaddress,A5
MVKH checkaddress,A5
LDW *A5,B4
MVK 0x0000,A4
MVKH 0x0000,A4
STW A1,*--B15(4)
NOP 2
CMPEQ A4,B4,A1
..........

the error originated from this instruction: "LDW *A5,B4", but I really don`t know how this problem occurs!

I have checked the address in the .map file, it says:
.data 0 00006ae0 00000004
00006ae0 00000004 checkblock.obj (.data)
it seems that everything is right.

if I run this project based on C6713 simulator, this error will disappear. I really confused!

How can I sovle this error in C6701?
thanks!

over 8 years ago

0 Titusrathinaraj Stalin over 8 years ago

TI__Guru** 116100 points

Hi,
Where did you get this project ?
Is it from TI or any books or your own ?

0 user4372577 over 8 years ago in reply to Titusrathinaraj Stalin

Prodigy 30 points

thanks for your help!
the upper code is mine(~~~it`s so ugly~~)! I got a complete project from a institute, the project is absolutely OK. My job is to add some function to that project, but for some reason, I must realize my part with pure assembly language, so I write below code:(the core part, the code is unfinished ....)
........
........
.global _c_int00
.data
checkaddress .word 00000000h
.text
check1:
STW A5,*--B15(4)
STW A4,*--B15(4)
STW B4,*--B15(4)
MVKL checkaddress,A5
MVKH checkaddress,A5
LDW *A5,B4
MVK 0x0000,A4
MVKH 0x0000,A4
STW A1,*--B15(4)
NOP 2
CMPEQ A4,B4,A1
[!A1] B _c_int00
LDW *B15++(4),A1
LDW *B15++(4),B4
NOP 4
[ B0] MVK 0x0000,A4
[!B0] MVK 0x0000,A4
[ B0] MVKH 0x0000,A4
[!B0] MVKH 0x0000,A4
STW A4,*A5
LDW *B15++(4),A4
LDW *B15++(4),A5
[ B0] B back1
[!B0] B next1
NOP 5
.........
........
On C6713, this code works well! But on C6701, the error occurs!
After some testing, I found that, every project I built on C6701 encountered the same error......

Here is another test:

C source file:
#include<stdio.h>
void main()
{
int a=1;
int b=2;
int c=3;
char d='d';
int e;
int f;
e=a;
f=b+c;
printf("data is%d:",e);
}

cmd file: link.cmd
MEMORY
{
PMEM: o=0x0 l=0xf000
DMEM: o=0x10000 l=0xf000
}

SECTIONS
{
.text:>PMEM
.data:>PMEM
.bss:>DMEM
.cinit:>DMEM
.system:>PMEM
.stack:>PMEM

}
The two file added rts6700.lib form the test project. There exists many "Warning",but I think they matter a little.
When I run the test, the same error ocurrs: Error: EMIF: Access to 0x80b8 is not expected in mode 1 !
I have tried many methods, but all failed! I really don`t know how to configurate the CCS environment to solve the problem.
Looking forward to your guide!
thanks for your valuable time!
thank you!

0 Titusrathinaraj Stalin over 8 years ago in reply to user4372577

TI__Guru** 116100 points

Hi,

Try to use the following .cmd file for your C6701 projects ( hello world sample code and your own)and update.

/****************************************************************************/
/* C6701.cmd */
/* Copyright (c) 2012 Texas Instruments Incorporated */
/* Author: Rafael de Souza */
/* */
/* Description: This file is a sample linker command file that can be */
/* used for linking programs built with the C compiler and */
/* running the resulting .out file on a C6701 */
/* device. Use it as a guideline. You will want to */
/* change the memory layout to match your specific C6xxx */
/* target system. You may want to change the allocation */
/* scheme according to the size of your program. */
/* */
/****************************************************************************/

MEMORY
{
VECS: o = 0x00000000 l = 0x00000200 /* Interrupt vector table */
IRAM: o = 0x00000200 l = 0x0000FFE0 /* 64kB Internal RAM */
SDRAM: o = 0x80000000 l = 0x01000000 /* 16MB External SDRAM */
}

SECTIONS
{
.intvecs > VECS /* Custom section for interrupt vector table */
.text > IRAM
.stack > IRAM
.bss > IRAM
.cio > IRAM
.const > IRAM
.data > IRAM
.switch > IRAM
.sysmem > IRAM
.far > IRAM
.args > IRAM
.ppinfo > IRAM
.ppdata > IRAM

/* COFF sections */
.pinit > IRAM
.cinit > IRAM

/* EABI sections */
.binit > IRAM
.init_array > IRAM
.neardata > IRAM
.fardata > IRAM
.rodata > IRAM
.c6xabi.exidx > IRAM
.c6xabi.extab > IRAM
}

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Error: EMIF: Access to 0x6ae0 is not expected in mode 1