Jim,

Thank you for the help, although I cannot use the __config command with
the C compiler (yet!) for some reason, the webboard is definetly a big
help.

I appriciate it,=20

=D6mer YALHI
oyalhi@teksan.com.tr
http://www.teksan.com.tr
Tel : +90 212 613 22 00
Fax: +90 212 544 70 35


-----Original Message-----
From: pic microcontroller discussion list
[mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of Jim Ewald
Sent: Wednesday, August 14, 2002 4:21 PM
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: [PIC]: MPLAB C18


You can find C18 users on the Microchip development tools webboard.
Point your browser at:

http://asp.microchip.com/webboard/wbpx.dll/~devtools

The fuses on the F18xxx MCU are set by including in-line assembler,
using the __Config directive (note there are 2 underscores in __Config).
There is a discussion on this topic up on the webboard. There is an
additional parameter to __Config in the PIC 18Fxxx series. It is defined
as:

 __Config  mem_addr, config_bits

The fuse addresses and bit maps are defined in the corresponding
P18Fxxx.inc file. For example, the OCS fuse settings might look like:

        __CONFIG    _CONFIG1H, _OSCS_OFF_1H & _HSPLL_OSC_1H

Sorry that I cannot help with your other questions. I'm still learning
how to use MPASM. C will have to wait for a while.

Regards,
Jim

-----Original Message-----
From: pic microcontroller discussion list
[mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of =D6mer Yalhi
Sent: Wednesday, August 14, 2002 2:49 AM
To: PICLIST@MITVMA.MIT.EDU
Subject: [PIC]: MPLAB C18

I feel like I am talking to myself here, it seems that there are no
MPLAB C18 users on this list, but I will give it one last chance.

I have been struggling with the compiler and I have couple of questions,
please help if you know anything:

1. How do you set the configuration bits programmatically?
2. How do you write and read to eeprom (I tried "rom long eTest =3D
0x1234;" but that does not seem to work, although I get no compiler
warnings/errors)
3. How do you define default values in the eeprom in C?  In asm I just
write (org 0x2100   de "testing",0)
4. Sometimes, after I have the hex file without any compaints from the
compiler, I load it to the programmer (P16PRO, and load the hex file,
and I get "Checksum error in object file".  Could this be because I
don't have the configuration bits in the hex file?  If so, how come I
don't get this error all the time?

The pic used is: 18F452 at 20Mhz.

Please help if you know anything or at least where to get help about the
C18.


Regards,


Omer YALHI
oyalhi@teksan.com.tr
http://www.teksan.com.tr
Tel : +90 212 613 22 00
Fax: +90 212 544 70 35

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