;***** CONFIGURATION
                ; int reset, no code protect, no watchdog, int RC clock
    __CONFIG    _MCLRE_OFF & _CP_OFF & _WDT_OFF & _IntRC_OSC

#define Z_pin GPIO,5 	 		; Zero Cross imput pin 2
#define Alarm GPIO,4			; Imput segnale dal buzzer sveglia
#define TRIAC GPIO,1			; Output pilotaggio triac pin 6
#define Ready GPIO,2			; Led detect busser processo in corso pin 5


;***** RC CALIBRATION
RCCAL   CODE    0x3FF           ; processor reset vector
        res 1                   ; holds internal RC cal value, as a movlw k

;***** RESET VECTOR *****************************************************
RESET   CODE    0x000           ; effective reset vector
        movwf   OSCCAL          ; apply internal RC factory calibration 


;***** MAIN PROGRAM *****************************************************

;***** Initialisation
start			
        movlw   b'111000'       ;  Setta Pin 0-1-2 come out e 3-4-5 come imput
        tris    GPIO            ; GP3 è solo imput
        clrf    GPIO	        ; start with GPIO clear (GP1 low)

;***** Main loop
main_loop
        ; turn on LED only if button pressed
        btfss   Alarm           ; led opto acceso quindi impulso 3V
        bsf     TRIAC           ;   LED acceso
        btfsc   Alarm           ; led opto spento quindi impulso 0V
        bcf     GPIO,1          ;   LED spento

        ; repeat forever
        goto    main_loop       


        END