annotate code_part1/OSTC_code_asm_part1/temp_extrema.asm @ 759:ae830d5e63ef

Start on new decogas display
author heinrichsweikamp
date Sat, 30 Nov 2013 20:41:43 +0100
parents 39e02673db4c
children c50296c3059e
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1
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2 ; OSTC - diving computer code
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3 ; Copyright (C) 2008 HeinrichsWeikamp GbR
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4
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5 ; This program is free software: you can redistribute it and/or modify
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6 ; it under the terms of the GNU General Public License as published by
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7 ; the Free Software Foundation, either version 3 of the License, or
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8 ; (at your option) any later version.
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9
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10 ; This program is distributed in the hope that it will be useful,
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11 ; but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 ; GNU General Public License for more details.
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14
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15 ; You should have received a copy of the GNU General Public License
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16 ; along with this program. If not, see <http://www.gnu.org/licenses/>.
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17
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18
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19 ; takes care of the temperature extrema routine
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20 ; written by: Matthias Heinrichs, info@heinrichsweikamp.com
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21 ; written: 05/15/08
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22 ; last updated: 05/15/08
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23 ; known bugs:
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24 ; ToDo:
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25
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26 check_temp_extrema: ; called once every minute from Sleeploop, Surfloop and Diveloop
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27 clrf EEADRH
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28 read_int_eeprom d'54' ; get lowest temperature so far
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29 movff EEDATA,sub_b+0
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30 read_int_eeprom d'55'
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31 movff EEDATA,sub_b+1
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32 SAFE_2BYTE_COPY temperature,sub_a
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33 call sub16 ; sub_c = sub_a - sub_b
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34 btfss neg_flag ; new lowest temperature ?
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35 bra check_temp_extrema_high
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36 ; Yes, store new value together with the date
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37 movff sub_a+0,EEDATA
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38 write_int_eeprom d'54'
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39 movff sub_a+1,EEDATA
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40 write_int_eeprom d'55'
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41 movff month,EEDATA
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42 write_int_eeprom d'56'
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43 movff day,EEDATA
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44 write_int_eeprom d'57'
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45 movff year,EEDATA
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46 write_int_eeprom d'58'
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47
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48 ; Now check high extrema
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49 check_temp_extrema_high:
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50 read_int_eeprom d'59' ; get highest temperature so far
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51 movff EEDATA,sub_b+0
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52 read_int_eeprom d'60'
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53 movff EEDATA,sub_b+1
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54 SAFE_2BYTE_COPY temperature,sub_a
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55 call sub16 ; sub_c = sub_a - sub_b
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56 btfsc neg_flag ; new highest temperature ?
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57 return ; no, quit!
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59 ; Yes, store new value together with the date
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60 movff sub_a+0,EEDATA
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61 write_int_eeprom d'59'
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62 movff sub_a+1,EEDATA
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63 write_int_eeprom d'60'
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64 movff month,EEDATA
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65 write_int_eeprom d'61'
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66 movff day,EEDATA
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67 write_int_eeprom d'62'
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68 movff year,EEDATA
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69 write_int_eeprom d'63'
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70 return