;;
  ;;  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     ; use this for com-spi
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       .1
VERSION_MIN     EQU       .0
NAME_0          EQU       '9'
NAME_1          EQU       '4'
NAME_2          EQU       '7'
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

#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,ANSB1     ; use this for com-uart
  bcf       ANSELB,ANSB5     ; use this for com-spi
  movlb     .0
  ;; btfsc     PORTB,1          ; use this for com-uart
  btfsc     PORTB,5          ; use this for com-spi
  goto      USERVECT
  goto      com_init
  ;; -------------------------------------
  ;; Bootloader (com specific subroutines and init)
;; #include "com-16f1847-uart.inc"
#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