blink188.asm:
title "Blink V. 1.0"
subtitle "The uC Equivalent of Hello world"
; ***** Program Header *******************************************************************************
list P=PIC16F18877, ST=OFF, MM=OFF, N=42, B=4, W=1 ; <-- List file directives
include <p16f18877.inc> ; <--Use the name of your PIC here
; ***** Device Configuration *************************************************************************
__CONFIG _CONFIG1, _FEXTOSC_OFF & _RSTOSC_HFINT32 & _CLKOUTEN_OFF & _CSWEN_ON & _FCMEN_ON
__CONFIG _CONFIG2, _MCLRE_ON & _PWRTE_OFF & _LPBOREN_OFF & _BOREN_OFF & _BORV_LO & _ZCD_OFF & _PPS1WAY_OFF & _STVREN_ON
__CONFIG _CONFIG3, _WDTCPS_WDTCPS_31 & _WDTE_OFF & _WDTCWS_WDTCWS_7 & _WDTCCS_SC
__CONFIG _CONFIG4, _WRT_OFF & _SCANE_available & _LVP_ON
__CONFIG _CONFIG5, _CP_OFF & _CPD_OFF
CBLOCK h'20'
COUNT1
COUNT2
ENDC
ORG 0x00
MAIN:
BANKSEL TRISB
BCF TRISB,0
CALL Init_Osc
BANKSEL PORTB
MainLoop:
BCF PORTB,0
CALL DELAY3
BSF PORTB,0
CALL DELAY3
GOTO MainLoop ; Do it again...
; Initialize the PIC Oscillator.
; For the 16F18877,
; page 122 of the data sheet(F version), the OSCCON1 register.
; Set according to Table 6-1(NOSC/COSC Bit Settings) and Table 6-2(NDIV/CDIV Bit Settings):
; Clock Source: HFINTOSC(110)
; Clock divider: 8(0011)
; Our byte now looks like this x1100000(0x60) - 32 Mhz.
; Our byte now looks like this x1100001(0x61) - 16 Mhz.
; Our byte now looks like this x1100010(0x62) - 8 Mhz.
; Our byte now looks like this x1100011(0x63) - 4 Mhz.
; Our byte now looks like this x1100100(0x64) - 2 Mhz.
; Our byte now looks like this x1100101(0x65) - 1 Mhz.
; Our byte now looks like this x1100110(0x66) - 500 kHz.
; Our byte now looks like this x1100111(0x67) - 250 kHz.
; Our byte now looks like this x1101001(0x68) - 125 kHz.
Init_Osc: ; System oscillator set to 4MHz
banksel OSCCON1
movlw 0x63
movwf OSCCON1
RETURN
DELAY3:
DECFSZ COUNT1,1
GOTO DELAY3
DECFSZ COUNT2,1
GOTO DELAY3
RETURN
END