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|
;;
;; spreadspace pic utils
;;
;;
;; Copyright (C) 2011-2013 Christian Pointner <equinox@spreadspace.org>
;;
;; This file is part of spreadspace pic utils.
;;
;; spreadspace pic utils 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, either version 3 of the License, or
;; any later version.
;;
;; spreadspace pic utils 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 spreadspace pic utils. If not, see <http://www.gnu.org/licenses/>.
;;
;; -------------------------------------
;; PREAMBLE
LIST p=16F1847
include "p16f1847.inc"
__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_BOOT & _PLLEN_OFF & _STVREN_OFF & _BORV_LO & _LVP_OFF
;; -------------------------------------
;; DEFINES (chip/com specific)
#define INTPIN PORTB,3
USERVECT EQU H'200'
ISRVECT EQU USERVECT + H'4'
FLASH_BOUNDARY EQU b'00011111' ; flash write boundary is at 32 bytes boundaries
CONFIG_OFFSET EQU H'07'
VERSION_MAJ EQU .0
VERSION_MIN EQU .1
NAME_0 EQU 'I'
NAME_1 EQU 'D'
NAME_2 EQU 'M'
DEVID_L EQU H'82'
DEVID_H EQU H'14'
FLASH_SIZE_L EQU H'00'
FLASH_SIZE_H EQU H'20' ; 0x2000 -> 8192 Words of Flash
FSS EQU .32 ; there 32 write latches
EEPROM_SIZE_L EQU H'00'
EEPROM_SIZE_H EQU H'01' ; 0x0100 -> 256 Bytes of EEPROM
MESS EQU .64 ; this limit is because of to combuff size and single byte len field for messages
CFG EQU .2
SUPPORTED_H EQU .0
SUPPORTED_L EQU b'00100111' ; only reset, read/write flash and read config is supported by now
#define HOOK_CMD_RESET cmd_reset
#define HOOK_CMD_R_FLASH cmd_r_flash
#define HOOK_CMD_W_FLASH cmd_w_flash
#define HOOK_CMD_R_EEPROM cmd_not_impl
#define HOOK_CMD_W_EEPROM cmd_not_impl
#define HOOK_CMD_R_CONFIG cmd_r_config
#define HOOK_CMD_W_CONFIG cmd_not_impl
;; Variables
combuff EQU H'0020'
current_cmdlen EQU H'0070'
csum EQU H'0071'
flags EQU H'007D'
cnt EQU H'007F'
;; Boot Macro
bootmacro macro
goto preinit
endm
;; for compatibility with older MCUs
#define FSR FSR0L
#define INDF INDF0
;; -------------------------------------
;; DEFINES (defines)
#include "generic-defines.inc"
;; -------------------------------------
;; Bootloader init
#include "generic-init.inc"
preinit
movlb .3
bcf ANSELB,ANSB5 ; use this for com-spi
movlb .0
btfsc PORTB,5 ; use this for com-spi
goto USERVECT
goto com_init
;; -------------------------------------
;; Bootloader (com specific subroutines and init)
#include "com-16f1847-spi.inc"
;; -------------------------------------
;; Bootloader (generic init/body)
#include "generic-mainloop.inc"
;; -------------------------------------
;; chip specific commands
#include "cmds-16f1847.inc"
;; -------------------------------------
;; -------------------------------------
;; dummy user code
org USERVECT
goto USERVECT
;; -------------------------------------
;; END
end
|
