18F45J10 write_program_memory() compiles to nothing

[mfer]

Hello,

I've seen similar problems here in many-many posts, but couldn't find a solution for my problem yet.

I'm trying to use the followings:

---------------------------------------------

void main()
{
int32 address;
int8 count;
int8 buffer[0x100];

address=0;
count=0x40;
read_program_memory(address,buffer,count);
address=0x1000;
count=0x40;
write_program_memory(address,buffer,count);
}

---------------------------------------------

And the call write_program_memory compiles to this:

---------------------------------------------

0024: GOTO 00E0 (RETURN)

.................... write_program_memory(address,buffer,count);
00C6: MOVFF 07,10C
00CA: MOVFF 06,10B
00CE: MOVLB 1
00D0: CLRF x0E
00D2: MOVLW 0B
00D4: MOVWF x0D
00D6: CLRF x10
00D8: MOVFF 0A,10F
00DC: MOVLB 0
00DE: BRA 0024

00E0: SLEEP
---------------------------------------------

funny, isn't it?

processor: 18F45J10
pcwh version: 4.019

Thanks in advance for any info! (even if you draw my attention to a post containing the solution, but slipped my attention)

mfer

[PCM programmer]

It worked OK for me. I took your code and dropped it into
a short test program and compiled it with PCH vs. 4.019.

[mfer]

Hello,

You only missed the main part:
what is at 0x0024?
There should be the writing sequence itself.

Did you burn it into the pic and it did the writing properly?

mfer

[PCM programmer]

You're right. It's not there. I didn't comment out the #nolist when I
posted that reply. I did now, and it's definitely missing the code.
It's not fixed in vs. 4.020 either.

I was going to offer to write a substitute routine for you over the weekend
but I just took a quick look at the data sheet and it appears to be a bit
more complicated than normal in that area. There are more caveats.
The data sheet gives an example of ASM code. It should be possible
to write a routine using that example. I just don't think I have the time
to commit to do it. I have got too much to do on Friday and on Sunday
as well (at work).

[mfer]

Hello,

Do you think I should report it as a bug?

I would be curious to see your replacement code, and next week would be all right.

Thank you for your help so far!!

mfer

[PCM programmer]

Yes, you should report it.

Actually, I edited my post and revised it a bit in the area of promises
just before you posted your latest response.
Most of my time is already pre-committed on Friday (a customer needs
some boards repaired that day) and I'm supposed to get a schematic
done as well. Sunday is also committed. I can work on it, but it will be
later next week.

[mfer]

Hello,

No problem, I will do it from the datasheet, I just was curious to see your solution. You know, one can always learn from others.

mfer

[mburton]

I'm having exactly the same problem with the PIC18F24J10, using compiler 3.249. No error messages or indications at all - very annoying.

Did you get your solution to work? If so, could you post your code fragment?

Thanks.


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