Problem "ti.sysbios.family.c64p.Exception: line 256: E_exceptionMax: pc = 0x00000000, sp = 0x0c2dc5b8."

And this is another imformation:

A0=0x0 A1=0x0
A2=0x0 A3=0xc8
A4=0x9 A5=0xc2dbe26
A6=0xc2db648 A7=0x0
A8=0xe A9=0x800001e0
A10=0x800640 A11=0x800500
A12=0x0 A13=0x0
A14=0xc2f3e7c A15=0x0
A16=0xc0001e0 A17=0x0
A18=0xc0001a8 A19=0x30
A20=0x0 A21=0x0
A22=0xebdfbfe3 A23=0x0
A24=0xafcebdbf A25=0xbe6cc649
A26=0x9f95faef A27=0x1
A28=0x70 A29=0x20
A30=0xdb A31=0xdb
B0=0x1 B1=0x1
B2=0xc2db648 B3=0x0
B4=0x0 B5=0xc7
B6=0xc2dbe16 B7=0x0
B8=0xc2dbe26 B9=0x0
B10=0xc000178 B11=0x0
B12=0x0 B13=0x0
B14=0xc2f4980 B15=0xc2dc5f8
B16=0x800500 B17=0x37ae3d00
B18=0x800640 B19=0x3feff266
B20=0x0 B21=0x0
B22=0x0 B23=0x0
B24=0xc2f3e7c B25=0x0
B26=0x0 B27=0x0
B28=0xc2ea0b0 B29=0x0
B30=0x80000b40 B31=0x0
NTSR=0xc2dc688
ITSR=0xc2dc694
IRP=0xc2dc69c
SSR=0xc2dc6a4
AMR=0xc2dc6a0
RILC=0xc2dc6ac
ILC=0xc2dc6a8
Exception at 0x0
EFR=0x2 NRP=0x0
Internal exception: IERR=0x1
Instruction fetch exception
ti.sysbios.family.c64p.Exception: line 256: E_exceptionMax: pc = 0x0c2dc690, sp = 0x0c2dc5f8.
xdc.runtime.Error.raise: terminating execution

minghao Cheng,

As "Johannes" posted above, you might need to debug your program to find the root cause. This is something to do with buffer/memory handling on the program.

Johannes,

Thank you for the quick and appropriate response.

There are many threads discussed on this subject, please refer them for faster debugging.

Thank you.

Mainly these two parts:

"
BIOS without asserts/diags is fully qualified and it should work.

Which version of SYS/BIOS are you using? Are you able to use ROV? If so, you should be able to look in the Exception module and get register information. The 'NRP' register contains the nmi return pointer. NRP contains the address at/near the code that caused the exception. Put 'NRP' address in disassembly window. This should give a good clue as to what went wrong.

-Karl-
"

"
Hi,

NRP = 0x0 means that your code branched to address 0x0 and tried to execute there....thus giving you the Instruction Fetch Exception.

Are you getting any print outs from the Exception? If so can you paste that information here. The value of B3 when the Exception occurs can tell you a lot since this is the return addr. It should give you a clue as to where your code was expecting to return. Once you have that, you should be able to determine how the code was branching to address 0x0 [most likely branching through another register that is set to 0x0].

Have you used ROV to check your stacks to make sure they are not overflowing?

Judah
"

I thought about the stack overflowing problem so i doubled the size of the stack , but it seems it's useless.

Thank you.

Hi Minghao

I too getting the same as mentioned below:

Internal exception: IERR=0x1
Instruction fetch exception
ti.sysbios.family.c64p.Exception: line 256: E_exceptionMax: pc = 0x00000000, sp = 0x00875e28

Please suggests me if you have already resolved this issue.

Regards

Hi hemsbond
I didn't solve the problem actually. However, I found very time It went wrong, it was always in the data-process function. I don't know why, that function ran very well on my STM32 board, just much more slower. I rewrote that data-process function, And there was no error. I got some problems like that, which the TI-RTOS just went wrong and gave me some info. But many of them were coding bugs, I fixed them. Hope you can work it out soon.