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annotate code_part1/OSTC_code_asm_part1/wait.asm @ 566:ebf6133207d4

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minor docu update
author heinrichsweikamp
date Wed, 29 Feb 2012 22:34:27 +0100
parents e33a8ac4b660
children c50296c3059e
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1 ; OSTC - diving computer code
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2 ; Copyright (C) 2008 HeinrichsWeikamp GbR
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3 ; This program is free software: you can redistribute it and/or modify
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4 ; it under the terms of the GNU General Public License as published by
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5 ; the Free Software Foundation, either version 3 of the License, or
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6 ; (at your option) any later version.
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7 ; This program is distributed in the hope that it will be useful,
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8 ; but WITHOUT ANY WARRANTY; without even the implied warranty of
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9 ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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10 ; GNU General Public License for more details.
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11 ; You should have received a copy of the GNU General Public License
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12 ; along with this program. If not, see <http://www.gnu.org/licenses/>.
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13 ; Wait routines
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14 ; written by: chsw, info@heinrichsweikamp.com
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15 ; written: 01/31/04
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16 ; last updated: 11/05/07
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17 ; known bugs:
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18 ; ToDo:
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19
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20 ; ==========================================================
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21 ; WAIT 10 MICROSECONDS - 16 Mhz and 32 Mhz
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22 ; ==========================================================
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23
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24 IFDEF SPEED_16MHz
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25 WAIT10US macro wait_temp
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26 movlw wait_temp
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27 call WAIT10USX
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28 endm
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29 ENDIF
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30
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31 IFDEF SPEED_32MHz
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32 WAIT10US macro wait_temp
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33 movlw wait_temp
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34 call WAIT10USX
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35 movlw wait_temp
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36 call WAIT10USX
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37 endm
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38 ENDIF
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39
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40 WAIT10USX movwf wait_temp
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41 goto JumpIn10us
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42 WAIT10USX2 nop
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43 nop
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49 nop
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50 JumpIn10us:
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51 nop
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79 nop
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80 decfsz wait_temp,1
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81 goto WAIT10USX2
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82 return
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83 ; ==========================================================
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84 ; WAIT 1 MILLISECOND - Working with TMR1
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85 ; ==========================================================
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86 WAITMS macro waitms_temp
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87 movlw waitms_temp
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88 call WAITMSX
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89 endm
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90
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91 WAITMSX movwf waitms_temp ; Holds number of ms to wait
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93 ASSERT_BANK1 .10002 ; Make sure we are in bank1
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94 Ifdef TESTING
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95 return ; In emulation, just skips waits
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96 Endif
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97 WAITMSX1:
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98 movf TMR1L,W
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99 addlw d'66' ; 66*15,26µs ~ 1ms
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100
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101 WAITMSX2 cpfseq TMR1L
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102 bra WAITMSX2 ; loop here...
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103
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104 decfsz waitms_temp,F
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105 bra WAITMSX1
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106 return