2016-03-02, 16:22:55
(This post was last modified: 2016-03-02, 16:23:40 by Mikael Gustavsson.)
This is working on my 12F1822 dev board, hopefully it is helpful for you:
Code:
; Set internal oscillator to 16MHz
banksel OSCCON
bsf OSCCON, IRCF3
bsf OSCCON, SCS1
; Make pins digital
banksel ANSELA
movlw 0x00
movwf ANSELA
; Disable weak pull-ups
banksel WPUA
movwf WPUA
; Select rx(ra5) and tx(ra4) pins
banksel APFCON
bsf APFCON, RXDTSEL
bsf APFCON, TXCKSEL
; Light led
banksel TRISA
bcf TRISA, TRISA2
banksel LATA
bsf LATA, LATA2Code:
;------------------------------------------------------------------------------
;
; Title: ds30 Loader for PIC12F and PIC16F
;
; File description: settings used by the author during development
;
; Copyright: Copyright © 10-11, Mikael Gustafsson
;
;------------------------------------------------------------------------------
;------------------------------------------------------------------------------
; This file is part of ds30 Loader.
;
; ds30 Loader is free software: you can redistribute it and/or modify
; it under the terms of the GNU General Public License as published by
; the Free Software Foundation.
;
; ds30 Loader is distributed in the hope that it will be useful,
; but WITHOUT ANY WARRANTY; without even the implied warranty of
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
; GNU General Public License for more details.
;
; You should have received a copy of the GNU General Public License
; along with ds30 Loader. If not, see <http://www.gnu.org/licenses/>.
;------------------------------------------------------------------------------
;------------------------------------------------------------------------------
; Device
;------------------------------------------------------------------------------
LIST P=12F1822
;------------------------------------------------------------------------------
; Includes
;------------------------------------------------------------------------------
#include "devices.inc"
;------------------------------------------------------------------------------
; User preferences
;------------------------------------------------------------------------------
radix DEC
#define DEV_MODE_12F 1 ;xxx delete or comment this line
#define FOSC 16000000 ;xxx
#define BLINIT 2000 ;xxx hello receive timeout [ms]
#define HELLOTRIES 2 ;xxx number of non hello characters received before branching to the user application
#define BLTIME 2000 ;xxx data receive timeout [ms]
;------------------------------------------------------------------------------
; UART settings
;------------------------------------------------------------------------------
#define USE_UART1 1 ;xxx uncomment to use uart1
;#define USE_UART2 1 ;xxx uncomment to use uart2
#define BAUDRATE 115200 ;xxx baudrate
;#define USE_ABAUD 1 ;auto baud rate detection, only available on enhanced mid-range devices(?)
#define USE_BRGH 1 ;
#define USE_BRG16 1 ;16-bit brg, only available on enhanced mid-range devices(?)
;#define USE_TXENABLE 1 ;xxx uncomment to use a tx enable pin
ifdef USE_TXENABLE
#define TRISR_TXE TRISA ;xxx tris register containing tx enable
#define PORTR_TXE PORTA ;xxx port register containing tx enable
#define TRISB_TXE TRISA3 ;xxx tris bit for tx enable
#define PORTB_TXE RA3 ;xxx port bit for tx enable
endif
;------------------------------------------------------------------------------
; SW UART settings
;
; Baud rate constant calculation:
; FCY = OSCF / 4
; TCY = 1 / FCY
; BITTIME = 1 / BAUDRATE
;
; BITWAITCNT = ((( (BITTIME - 24*TCY) / TCY / 3 ) + 1 ) / 2 )
;
;------------------------------------------------------------------------------
;#define USE_SWUART 1 ;xxx uncomment to use software uart
#define BITWAITCNT 2 ;xxx baud rate, see formula above
#define TRISR_TX TRISA ;xxx tris register containing tx
#define TRISB_TX TRISA4 ;xxx tris bit for tx
#define LATR_TX LATA ;xxx port register containing tx
#define LATB_TX LATA4 ;xxx port bit for tx
#define TRISR_RX TRISA ;xxx tris register containing tx
#define TRISB_RX TRISA5 ;xxx tris bit for tx
#define PORTR_RX PORTA ;xxx port register containing tx
#define PORTB_RX RA5 ;xxx port bit for tx
;------------------------------------------------------------------------------
; I2C settings, commercial version only www.ds30loader.com
;------------------------------------------------------------------------------
;COMMERCIAL_BEGIN
;#define USE_I2C1 1 ;xxx uncomment to use I2C1
;#define USE_I2C2 1 ;xxx uncomment to use I2C2
#define ADDR_PIC 14 ;xxx node address for this device, 7 bits
#define TRISR_SDA TRISA ;xxx tris register containing SDA pin
#define TRISB_SDA TRISA2 ;xxx port bit for SDA pin
#define TRISR_SCL TRISA ;xxx tris register containing SCL pin
#define TRISB_SCL TRISA1 ;xxx port bit for SCL pin
;COMMERCIAL_END
;------------------------------------------------------------------------------
; Advanced settings
;------------------------------------------------------------------------------
;#define KICK_WD 1 ;xxx only uncomment if the watchdog is enabled
#define WRITE_VER 1 ;do flash write verification
#define EWRITE_VER 1 ;do eeprom write verification
#define USE_READ 1 ;uncomment to enable read from GUI, commercial version only
#define BLPLW 256 ;bootloader placement, words from end, should be a multiple of 64
;------------------------------------------------------------------------------
; Configuration bits, these macros can be found at the end of the inc-files located in
; C:\Program Files\Microchip\MPASM Suite\
;
; These can also be set in MPLAB IDE instead, they are found in Configure->Configuration bits...
;------------------------------------------------------------------------------
__CONFIG _CONFIG1, _FOSC_INTOSC & _WDTE_OFF & _PWRTE_OFF & _MCLRE_ON & _CP_OFF & _CPD_OFF & _BOREN_OFF & _CLKOUTEN_OFF & _IESO_OFF & _FCMEN_OFF
__CONFIG _CONFIG2, _WRT_OFF & _PLLEN_OFF & _STVREN_OFF & _BORV_19 & _LVP_OFF