Presetting Configuration Fuses (PIC Defines) into your Program

[mister_e]

If you are using any PIC18 serie, you will have this warning one day or another. Our friends from Microchip decide to change the way to define the config fuses when using the latest MPASM version 5.00.

The solution is still located at the same place... at the end of the 18XXXX.INC file located in the MPASM folder.

; IMPORTANT: For the PIC18 devices, the __CONFIG directive has been
; superseded by the CONFIG directive. The following settings
; are available for this device.
;
; Oscillator Selection:
; OSC = LP LP
; OSC = XT XT
; OSC = HS HS
; OSC = RC RC
; OSC = EC EC-OSC2 as Clock Out
; OSC = ECIO EC-OSC2 as RA6
; OSC = HSPLL HS-PLL Enabled
; OSC = RCIO RC-OSC2 as RA6

SO now the new method to set the config fuse on the PIC18 serie is...

@ CONFIG OSCS=OFF, OSC=HS
    ' Oscillator switch OFF
    ' Use HS oscillator (20MHZ here)
    '
@ CONFIG BOR=ON, PWRT=ON, BORV=45
    ' Brown out reset ON @ 4.5Volts
    ' Power-up timer ON
    '
@ CONFIG WDT=ON
    ' Watch dog timer ON
    '
@ CONFIG STVR=ON, LVP=OFF, DEBUG=OFF
    ' Stack over/underflow ON
    ' Low Voltage programming OFF
    ' Background debugger OFF

Or if you prefer...

ASM
    CONFIG OSCS=OFF  ; Oscillator switch OFF
    CONFIG OSC=HS    ; Use HS oscillator (20MHZ here)
    CONFIG BOR=ON    ; Brown out reset ON 
    CONFIG BORV=45   ; Brown out detect voltage=4.5 Volt
    CONFIG PWRT=ON   ; Power-up timer ON      
    CONFIG WDT=ON    ; Watch dog timer ON
    CONFIG STVR=ON   ; Stack over/underflow ON
    CONFIG LVP=OFF   ; Low Voltage programming OFF
    CONFIG DEBUG=OFF ; Background debugger OFF
    ENDASM

Don't forget to comment the default PBP config fuses...