Configuration of 18F268x

I am currently working on a project with an 18F4550. 32k seemed like it would be enough program memory :rolleyes:... I purchased some 18F2682, 18F2680 and 18F2685, because of their enormous program memory. However, simple Serin2 & Serout2, SDA & SCL do not work.

I did set the OSC in the 18F2680 as such

Code:

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INCLUDE "P18F2680.INC"    ; MPASM  Header
        __CONFIG    _CONFIG1H,  _OSC_IRCIO67_1H
        __CONFIG    _CONFIG2H, _WDT_ON_2H & _WDTPS_128_2H
        __CONFIG    _CONFIG3H, _PBADEN_OFF_3H & _LPT1OSC_OFF_3H & _MCLRE_ON_3H
        __CONFIG    _CONFIG4L, _LVP_OFF_4L
        NOLIST

---

But even such statements like PORTB.1=1 do nothing...
I have the INCLUDE "ALLDIGITAL.pbp"

Any help would be great.

Mike

Are you writing in assembly language or PicBasic Pro?
If PicBasic Pro, you should not include the MPASM header.

Since MCLRE is ON, do you have a pull-up resistor on the MCLR pin?

Quote:

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Originally Posted by Darrel Taylor

Are you writing in assembly language or PicBasic Pro?
If PicBasic Pro, you should not include the MPASM header.

Since MCLRE is ON, do you have a pull-up resistor on the MCLR pin?

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I am writing the program in PicBasic Pro... the above [code] is from the PBP file in my C drive.
Yes I have a pull up resistor/diode on my MCLR

Oh, you're modifying the 18F2680.inc file in your PBP folder, of an older version of PBP.

_OSC_RCIO_1H is for an external RC oscillator.
Do you have a resistor/capacitor circuit on your OSC pin?

Or did you really want the Internal oscillator?
_OSC_IRCIO67_1H

You should also have _XINST_OFF_4L since PBP cannot use the extended instruction set.

Try them like this ...

Code:

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        __CONFIG    _CONFIG1H, _OSC_IRCIO67_1H & _FCMEN_OFF_1H & _IESO_OFF_1H
        __CONFIG    _CONFIG2H, _WDT_ON_2H & _WDTPS_512_2H
        __CONFIG    _CONFIG3H, _PBADEN_OFF_3H & _LPT1OSC_OFF_3H & _MCLRE_ON_3H
        __CONFIG    _CONFIG4L,  _STVREN_ON_4L & _LVP_OFF_4L & _BBSIZ_1024_4L & _XINST_OFF_4L

---

Don't forget to set the OSCCON register or it will be running at the default 1Mhz.

Thank you, Thank you, & Thank you! Worked like a charm, I just moved some ports around and it took right off.
Could you help me out with the Config fuses for the 18F2682 and 18F2685 while we are at it? :rolleyes:

I think they will be the same.

But you might want to verify them in the bottom of the P18F2682.inc and P18F2685.inc files in your C:\Program Files\Microchip\MPASM Suite folder.

C:\Program Files (x86)\Microchip\MPASM Suite - for 64-bit systems.

Ah yes...Nice to have the elbow room of 96K (program memory). At least this way I can start big and choose the correct size after I am done. Thanks again for your help.
I have been getting better at finding just such information in the 400+ page data sheets:rolleyes: