I work with 12F683 and MPASM v5.42.

1000 x thx

Code :

'************************************************* ***************
'* Name : Test_SPWM.pbp *
'* Author : Darrel Taylor *
'* Date : 9/30/2006 *
'* Version : 1.0 *
'* Notes : *
'* : *
'************************************************* ***************
; Initialize your hardware first

DEFINE OSC 20
CLEAR

INCLUDE "..\DT_INTS-14.bas" ; Base Interrupt System
INCLUDE "SPWM_INT.bas" ; Software PWM module
wsave VAR BYTE $20 SYSTEM
wsave1 VAR BYTE $A0 SYSTEM

DEFINE SPWM_FREQ 40 ; SPWM Frequency
DEFINE SPWM_RES 256 ; SPWM Resolution

DutyVars VAR BYTE[3] ; DutyCycle Variables
DutyVar1 VAR DutyVars[0] ; group them in an array for easy access
DutyVar2 VAR DutyVars[1] ; with FOR loops etc.
DutyVar3 VAR DutyVars[2]

ASM
SPWM_LIST macro ; Define PIN's to use for SPWM
SPWM_PIN GPIO, 0, _DutyVar1
SPWM_PIN GPIO, 1, _DutyVar2
SPWM_PIN GPIO, 2, _DutyVar3
endm
SPWM_INIT SPWM_LIST ; Initialize the Pins
ENDASM

ASM
INT_LIST macro ; IntSource, Label, Type, ResetFlag?
INT_Handler TMR1_INT, SPWMhandler, ASM, yes
endm
INT_CREATE ; Creates the interrupt processor
ENDASM

@ INT_ENABLE TMR1_INT ; enable Timer 1 interrupts

;_________________________________________________ ____________________________

RandVar VAR WORD : RandVar = 12345
LoopCount VAR WORD

Main:
DutyVar1 = 5
DutyVar2 = 50
DutyVar3 = 150

GOTO Main