Mercurial > public > mk2
annotate code_part1/OSTC_code_asm_part1/sync_clock.asm @ 813:c87b9f2fb2f6
wakeup from deep sleep mode automatically upon USB connect
| author | heinrichsweikamp |
|---|---|
| date | Tue, 14 Apr 2015 14:50:11 +0200 |
| parents | c50296c3059e |
| children | 2a0e5d884fc3 |
| rev | line source |
|---|---|
| 21 | 1 |
| 2 ; OSTC - diving computer code | |
|
807
c50296c3059e
BUGFIX: Divetime had unwanted "." behind the minutes
heinrichsweikamp
parents:
21
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changeset
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3 ; Copyright (C) 2015 HeinrichsWeikamp GbR |
| 21 | 4 |
| 5 ; This program is free software: you can redistribute it and/or modify | |
| 6 ; it under the terms of the GNU General Public License as published by | |
| 7 ; the Free Software Foundation, either version 3 of the License, or | |
| 8 ; (at your option) any later version. | |
| 9 | |
| 10 ; This program is distributed in the hope that it will be useful, | |
| 11 ; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 ; GNU General Public License for more details. | |
| 14 | |
| 15 ; You should have received a copy of the GNU General Public License | |
| 16 ; along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 17 | |
| 18 | |
| 19 ; Syncs RTC with PC | |
| 20 ; written by: Matthias Heinrichs, info@heinrichsweikamp.com | |
| 21 ; written: 13/10/07 | |
| 22 ; last updated: 08/08/31 | |
| 23 ; known bugs: | |
| 24 ; ToDo: | |
| 25 | |
| 26 ; routine echoes the "b" command as ready signal | |
| 27 ; PC has to send 6 bytes | |
| 28 ; Byte1: hours | |
| 29 ; Byte2: minutes | |
| 30 ; Byte3: seconds | |
| 31 ; Byte4: month | |
| 32 ; Byte5: day | |
| 33 ; Byte6: year | |
| 34 ; All bytes will be checked for plausibility and the clock will be set | |
| 35 ; after a timeout of about 20ms, the routine ends | |
| 36 | |
| 37 sync_clock: | |
| 38 bcf uart_settime ; clear flag | |
| 39 bcf PIE1,RCIE ; no interrupt for UART | |
| 40 bsf LED_blue ; LEDusb ON | |
| 41 bcf PIR1,RCIF ; clear flag | |
| 42 | |
| 43 movlw "b" ; send echo | |
| 44 movwf TXREG | |
| 45 call rs232_wait_tx ; wait for UART | |
| 46 | |
| 47 call rs232_get_byte ; hours | |
| 48 movff RCREG, hours | |
| 49 | |
| 50 movlw d'24' | |
| 51 cpfslt hours | |
| 52 clrf hours | |
| 53 | |
| 54 call rs232_get_byte ; minutes | |
| 55 movff RCREG, mins | |
| 56 | |
| 57 movlw d'60' | |
| 58 cpfslt mins | |
| 59 clrf mins | |
| 60 | |
| 61 call rs232_get_byte ; seconds | |
| 62 movff RCREG, secs | |
| 63 | |
| 64 movlw d'60' | |
| 65 cpfslt secs | |
| 66 clrf secs | |
| 67 | |
| 68 call rs232_get_byte ; month | |
| 69 movff RCREG, month | |
| 70 | |
| 71 movlw d'12' | |
| 72 cpfsgt month | |
| 73 bra sync_clock0 | |
| 74 movwf month | |
| 75 | |
| 76 sync_clock0: | |
| 77 call rs232_get_byte ; day | |
| 78 movff RCREG, day | |
| 79 | |
| 80 movff month,lo ; new month | |
| 81 dcfsnz lo,F | |
| 82 movlw .31 | |
| 83 dcfsnz lo,F | |
| 84 movlw .28 | |
| 85 dcfsnz lo,F | |
| 86 movlw .31 | |
| 87 dcfsnz lo,F | |
| 88 movlw .30 | |
| 89 dcfsnz lo,F | |
| 90 movlw .31 | |
| 91 dcfsnz lo,F | |
| 92 movlw .30 | |
| 93 dcfsnz lo,F | |
| 94 movlw .31 | |
| 95 dcfsnz lo,F | |
| 96 movlw .31 | |
| 97 dcfsnz lo,F | |
| 98 movlw .30 | |
| 99 dcfsnz lo,F | |
| 100 movlw .31 | |
| 101 dcfsnz lo,F | |
| 102 movlw .30 | |
| 103 dcfsnz lo,F | |
| 104 movlw .31 | |
| 105 cpfsgt day ; day ok? | |
| 106 bra sync_clock1 ; OK | |
| 107 movlw .1 ; not OK, set to 1st | |
| 108 movwf day | |
| 109 | |
| 110 sync_clock1: | |
| 111 call rs232_get_byte ; year | |
| 112 movff RCREG, year | |
| 113 | |
| 114 movlw d'100' | |
| 115 cpfslt year | |
| 116 clrf year | |
| 117 | |
| 118 bcf LED_blue ; LEDusb OFF | |
| 119 bcf PIR1,RCIF ; clear flag | |
| 120 bsf oneminupdate ; set flag, so new time and date will be updated in surfacemode at once | |
| 121 bsf PIE1,RCIE ; enable interrupt for UART | |
| 122 goto surfloop_loop ; return to surface loop |