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|
;;
;; mur.sat
;;
;; Somewhen in the year 2011, mur.at will have a nano satellite launched
;; into a low earth orbit (310 km above the surface of our planet). The
;; satellite itself is a TubeSat personal satellite kit, developed and
;; launched by interorbital systems. mur.sat is a joint venture of mur.at,
;; ESC im Labor and realraum.
;;
;; Please visit the project hompage at sat.mur.at for further information.
;;
;;
;; Copyright (C) 2011 Christian Pointner <equinox@mur.at>
;;
;; This file is part of mur.sat.
;;
;; mur.sat 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.
;;
;; mur.sat 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 mur.sat. If not, see <http://www.gnu.org/licenses/>.
;;
;; -------------------------------------
;; PREAMBLE
LIST p=12F519
include "p12f519.inc"
;; __config _IntRC_OSC & _IOSCFS_4MHz & _MCLRE_ON & _CP_OFF & _CPDF_OFF & _WDTE_OFF
__config _IntRC_OSC & _IOSCFS_4MHz & _MCLRE_OFF & _CP_OFF & _CPDF_OFF & _WDTE_OFF
;; -------------------------------------
;; DEFINES
BEACON_INT EQU .5
SECCNT EQU H'0007'
CHAR EQU H'0008'
CHARCNT EQU H'0009'
ELEMENT EQU H'000A'
ELECNT EQU H'000B'
DOT EQU .85
DASH EQU .255
ESPACE EQU .85
CSPACE EQU .255
CWSPEED EQU .100
DOTCNT0 EQU H'000E'
DOTCNT1 EQU H'000F'
CWENABLE EQU 0
CWOUT EQU 1
;; -------------------------------------
;; OFFSET
org 0
;; -------------------------------------
;; INIT
init
movlw b'11110110'
option
movlw b'11111100'
tris PORTB
bcf PORTB,CWOUT
bcf PORTB,CWENABLE
clrf TMR0
movlw BEACON_INT
movwf SECCNT
goto main
;; -------------------------------------
;; TABLES
;; Morse Codes: 0=dot, 1=dash
getcw
addwf PCL,f
nop
retlw b'00010000' ; !
retlw b'01001000' ; "
retlw b'00000000' ; #
retlw b'00010010' ; $
retlw b'00000000' ; %
retlw b'01000000' ; &
retlw b'01111000' ; '
retlw b'10110000' ; (
retlw b'10110100' ; )
retlw b'00000000' ; *
retlw b'01010000' ; +
retlw b'11001100' ; ,
retlw b'10000100' ; -
retlw b'01010100' ; .
retlw b'10010000' ; /
retlw b'11111000' ; 0
retlw b'01111000' ; 1
retlw b'00111000' ; 2
retlw b'00011000' ; 3
retlw b'00001000' ; 4
retlw b'00000000' ; 5
retlw b'10000000' ; 6
retlw b'11000000' ; 7
retlw b'11100000' ; 8
retlw b'11110000' ; 9
retlw b'11100000' ; :
retlw b'10101000' ; ;
retlw b'00010100' ; <
retlw b'10001000' ; =
retlw b'10001010' ; >
retlw b'00110000' ; ?
retlw b'01000000' ; @
retlw b'01000000' ; A
retlw b'10000000' ; B
retlw b'10100000' ; C
retlw b'10000000' ; D
retlw b'00000000' ; E
retlw b'00100000' ; F
retlw b'11000000' ; G
retlw b'00000000' ; H
retlw b'00000000' ; I
retlw b'01110000' ; J
retlw b'10100000' ; K
retlw b'01000000' ; L
retlw b'11000000' ; M
retlw b'10000000' ; N
retlw b'11100000' ; O
retlw b'01100000' ; P
retlw b'11010000' ; Q
retlw b'01000000' ; R
retlw b'00000000' ; S
retlw b'10000000' ; T
retlw b'00100000' ; U
retlw b'00010000' ; V
retlw b'01100000' ; W
retlw b'10010000' ; X
retlw b'10110000' ; Y
retlw b'11000000' ; Z
;; Morse Code Length
getcwlen
addwf PCL,f
nop
retlw .5 ; !
retlw .6 ; "
retlw .0 ; #
retlw .7 ; $
retlw .0 ; %
retlw .5 ; &
retlw .6 ; '
retlw .5 ; (
retlw .6 ; )
retlw .0 ; *
retlw .5 ; +
retlw .6 ; ,
retlw .6 ; -
retlw .6 ; .
retlw .5 ; /
retlw .5 ; 0
retlw .5 ; 1
retlw .5 ; 2
retlw .5 ; 3
retlw .5 ; 4
retlw .5 ; 5
retlw .5 ; 6
retlw .5 ; 7
retlw .5 ; 8
retlw .5 ; 9
retlw .6 ; :
retlw .6 ; ;
retlw .6 ; <
retlw .5 ; =
retlw .7 ; >
retlw .6 ; ?
retlw .6 ; @
retlw .2 ; A
retlw .4 ; B
retlw .4 ; C
retlw .3 ; D
retlw .1 ; E
retlw .4 ; F
retlw .3 ; G
retlw .4 ; H
retlw .2 ; I
retlw .4 ; J
retlw .3 ; K
retlw .4 ; L
retlw .2 ; M
retlw .2 ; N
retlw .3 ; O
retlw .4 ; P
retlw .4 ; Q
retlw .3 ; R
retlw .3 ; S
retlw .1 ; T
retlw .3 ; U
retlw .4 ; V
retlw .3 ; W
retlw .4 ; X
retlw .4 ; Y
retlw .4 ; Z
;; test string
string
addwf PCL,f
nop
retlw 'T' - ' '
retlw 'A' - ' '
retlw 'S' - ' '
retlw '.' - ' '
retlw 'R' - ' '
retlw 'U' - ' '
retlw 'M' - ' '
;; -------------------------------------
;; SUBROUTINES
dottime
movwf DOTCNT1
dot_outer
movlw CWSPEED
movwf DOTCNT0
dot_inner
nop
nop
nop
nop
decfsz DOTCNT0,f
goto dot_inner
decfsz DOTCNT1,f
goto dot_outer
return
;; -------------------------------------
send_beacon
movlw .7
movwf CHARCNT
beacon_next_char
movf CHARCNT,w
call string
call getcw
movwf ELEMENT
movf CHARCNT,w
call string
call getcwlen
movwf ELECNT
movf ELECNT,f
btfsc STATUS,Z
goto beacon_invalid_char
beacon_next_element
bsf PORTB,CWOUT
btfss ELEMENT,7
movlw DOT
btfsc ELEMENT,7
movlw DASH
call dottime
bcf PORTB,CWOUT
rlf ELEMENT,f
decfsz ELECNT,f
goto beacon_element_space
movlw CSPACE
call dottime
beacon_invalid_char
decfsz CHARCNT,f
goto beacon_next_char
return
beacon_element_space
movlw ESPACE
call dottime
goto beacon_next_element
;; -------------------------------------
;; MAINLOOP
main
movf TMR0,w
btfss STATUS,Z
goto main
;; this gets called every second
decfsz SECCNT,f
goto waitfor0
movlw BEACON_INT
movwf SECCNT
;; this gets called every BEACON_INT seconds
call send_beacon
;; is the timer above zero?
waitfor0
movf TMR0,w
btfsc STATUS,Z
goto waitfor0
goto main
;; -------------------------------------
;; END
end
|
