Target not protected - Even after protection fuse used.

[jaikumar]

Hi all,

I am hoping someone can help me.

Compiler Version: 5.042
CCSLoad Version: 5.010

I am programming 16F887 with the following fuses:

[jaikumar]

Also tried adding the fuse below:

[PCM programmer]

1. Look at the fuses at the end of your .LST file. What do they show ?
Post them.

2. Are you compiling with your IDE set for Debug mode, or Release mode ?

[jaikumar]

Here is listing from List File:

[Ttelmah]

Well, the protect fuse is there in what the compiler is sending to the programmer.

Take us through your exact configuration. You are coding in the IDE or the command line, or through MPLAB?. Then you are writing the code to the chip directly with CCSLoad?. What is the actual programmer?.

One thought. In CCSLoad, top right corner of the screen (on current versions), column labelled 'options'. You have got the 'config bits' tab ticked?. Otherwise the fuses won't be written, so the protection won't be set....

[jaikumar]

I use Mach-X to program the 40 pin 16F887
I use the CCS editor to edit and compile the code
And then the ccs load loads the program after i compile.

In the options the Config bits is ticked.

[Ttelmah]

Do the simplest test.

Load the file into CCSLoad.
Select the 'file' option from the top bar.
Select the 'configuration/ID' window from the selectors on the right of the window.
Scroll down this.
What does the tick box 'Code protected from reads' show?.
What does the tick box 'Data EEPROM code protected' show?.

If both of these are selected (they are in the fuses you post), then the problem is in the programmer.

One other programmer setting affects this. If you click on the expand button for the options, make sure the erase mode is set to 'bulk erase chip before programming', and the tick box 'verify ROM protect after write' is set.

If it still doesn't work, you need to talk to CCS.

[jaikumar]

Dear Ttelmah,

I have tried all the suggestions that you have advised.
Still it does not work.
I think i have faced this problem before and at that time
i found that if i use older ccsload program say version 4.010 or something it
worked ok.
unfortunately i cleaned up computer and don't have any older version of
ccsload.

Only thing is i don't know why although this error remains nobody has intimated CCS or wonder why they have not fixed it.
I think not many use MACH-X programmer.

Regards,
Jay

[jaikumar]

Good News. When i try to program the PIC12F675 with the code protect
fuse. It works OK.

So i will email CCS about this problem.

Thanks all.

[Ttelmah]

While they should fix it, it is worth asking why you want protection on this?. The Mach-X, is a development programmer, not a production device, and protection should never be enabled during development (just wastes life cycles of the chip). While a lot of my production code is protected, I can't even think of when I last turned protection 'on' during development....

[jaikumar]

Well I have a very small company. Where i program about 30 micros per month for production and the Mach-X suits me just fine.

[jaikumar]

From CCS