annotate code_part1/OSTC_code_asm_part1/adc_rtc.asm @ 261:9d4ab7c96885

Fix first stop rounding in GF model.
author JeanDo
date Mon, 11 Apr 2011 09:00:49 +0200
parents 1efd59d689f8
children ceedf078b2d8
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1 ; OSTC - diving computer code
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2 ; Copyright (C) 2008 HeinrichsWeikamp GbR
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3
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4 ; This program is free software: you can redistribute it and/or modify
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5 ; it under the terms of the GNU General Public License as published by
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6 ; the Free Software Foundation, either version 3 of the License, or
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7 ; (at your option) any later version.
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8
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9 ; This program is distributed in the hope that it will be useful,
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10 ; but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 ; GNU General Public License for more details.
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13
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14 ; You should have received a copy of the GNU General Public License
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15 ; along with this program. If not, see <http://www.gnu.org/licenses/>.
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16
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17
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18 ; routines for AD converter, Realtime clock initialisation
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19 ; written by: Matthias Heinrichs, info@heinrichsweikamp.com
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20 ; written: 10/30/05
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21 ; last updated: 05/15/08
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22 ; known bugs:
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23 ; ToDo:
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24
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25 get_battery_voltage: ; starts ADC and waits until fnished
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31fa973a70fd Kludges to emulate inexisting devices when debugged with the MPLAB software SIMulator.
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26 ; In MPLAB Sim mode (hardware emulation), use a DMCI slider to
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27 ; directly set a 16 bit value in the range 0..1023
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28 ; In normal mode, jut wait for the value to be ready:
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29
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30 ifndef TESTING
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31 bsf ADCON0,0 ; power on ADC
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32 nop
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33 bsf ADCON0,1 ; start ADC
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34
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35 get_battery_voltage2:
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36 btfsc ADCON0,1 ; Wait...
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37 bra get_battery_voltage2
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38 endif
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39
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40 ; 3.3V/1024=3,2227mV Input/Bit=9,6680mV Battery/Bit.
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41 ; Example: 434*9,6680mV=4195,9mV Battery.
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42
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43 movff ADRESH,xA+1
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44 movff ADRESL,xA+0
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45 movlw LOW d'966'
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46 movwf xB+0
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47 movlw HIGH d'966'
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48 movwf xB+1
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49 call mult16x16 ; AD_Result*966
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50 movlw d'100'
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51 movwf xB+0
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52 clrf xB+1
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53 call div32x16 ;xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder
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54 movff xC+0,batt_voltage+0 ; store value
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55 movff xC+1,batt_voltage+1
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56 bcf ADCON0,0 ; power off ADC
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57
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58 ; Check if we should enter deep-sleep mode
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59
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60 movff batt_voltage+0,sub_b+0
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61 movff batt_voltage+1,sub_b+1
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62 movlw LOW d'2600' ; must be greater then 2600mV...
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63 movwf sub_a+0
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64 movlw HIGH d'2600'
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65 movwf sub_a+1
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66 call sub16 ; sub_c = sub_a - sub_b
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67 bcf enter_error_sleep ; Clear flag
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68 btfsc neg_flag ; neg_flag=1 if eeprom40:41 < 2000
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69 bra get_battery_voltage3 ; Battery in OK range
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70
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71 movlw d'2'
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72 movwf fatal_error_code ; Battery very low!
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73 bsf enter_error_sleep ; enter error routine
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74
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75 get_battery_voltage3:
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76 movff amb_pressure+0,sub_b+0
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77 movff amb_pressure+1,sub_b+1
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78 movlw LOW d'15001' ; must be lower then 15001mBar
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79 movwf sub_a+0
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80 movlw HIGH d'15001'
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81 movwf sub_a+1
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82 call sub16 ; sub_c = sub_a - sub_b
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83 bcf enter_error_sleep ; Clear flag
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84 btfss neg_flag ;
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85 bra get_battery_voltage4 ; Pressure in OK range
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86
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87 movlw d'3'
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88 movwf fatal_error_code ; too deep
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89 bsf enter_error_sleep ; enter error routine
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90 ; Continue with rest of routine
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91
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92 get_battery_voltage4:
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93 ; check if the battery control memory needs to be initialised!
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94 bcf initialize_battery1 ; clear check-flags
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95 bcf initialize_battery2
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96
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97 read_int_eeprom d'40' ; get lowest battery voltage seen in mV
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98 movff EEDATA,sub_b+0
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99 read_int_eeprom d'41'
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100 movff EEDATA,sub_b+1
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101
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102 movlw LOW d'2000' ; must be greater then 2000mV...
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103 movwf sub_a+0
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104 movlw HIGH d'2000'
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105 movwf sub_a+1
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106 call sub16 ; sub_c = sub_a - sub_b
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107 btfss neg_flag ; neg_flag=1 if eeprom40:41 < 2000
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108 bsf initialize_battery1 ; battery need to be initialised
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109
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110 movlw LOW d'4500' ; must be lower then 4500mV...
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111 movwf sub_a+0
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112 movlw HIGH d'4500'
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113 movwf sub_a+1
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114 call sub16 ; sub_c = sub_a - sub_b
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115 btfss neg_flag ; neg_flag=1 if eeprom40:41 < 4500
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116 bsf initialize_battery2 ; battery need to be initialised
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117
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118 btfss initialize_battery1 ; battery need to be initialised?
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119 bra get_battery_no_init ; No, we have already valid values, just check for new extremas
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120
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121 btfss initialize_battery2 ; battery need to be initialised?
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122 bra get_battery_no_init ; No, we have already valid values, just check for new extremas
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123
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124 ; Init EEPROM for battery control
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125 ; Reset lowest battery seen
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126 movlw LOW d'4200' ; reset to 4.2V
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127 movwf EEDATA
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128 write_int_eeprom d'40'
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129 movlw HIGH d'4200' ; reset to 4.2V
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130 movwf EEDATA
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131 write_int_eeprom d'41'
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132 movff month,EEDATA
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133 write_int_eeprom d'42'
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134 movff day,EEDATA
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135 write_int_eeprom d'43'
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136 movff year,EEDATA
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137 write_int_eeprom d'44'
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138 movff temperature+0,EEDATA
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139 write_int_eeprom d'45'
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140 movff temperature+1,EEDATA
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141 write_int_eeprom d'46'
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142 ; Reset charge statistics
53
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143 clrf EEDATA
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144 write_int_eeprom d'47' ; last complete charge
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145 write_int_eeprom d'48' ; last complete charge
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146 write_int_eeprom d'49' ; last complete charge
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147 write_int_eeprom d'50' ; total cycles
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148 write_int_eeprom d'51' ; total cycles
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149 write_int_eeprom d'52' ; total complete cycles
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150 write_int_eeprom d'53' ; total complete cycles
0
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151 ; Reset temperature extremas
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152 movff temperature+0,EEDATA ; Reset mimimum extrema
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153 write_int_eeprom d'54'
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154 movff temperature+1,EEDATA
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155 write_int_eeprom d'55'
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156 movff month,EEDATA
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157 write_int_eeprom d'56'
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158 movff day,EEDATA
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159 write_int_eeprom d'57'
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160 movff year,EEDATA
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161 write_int_eeprom d'58'
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162 movff temperature+0,EEDATA ; Reset maximum extrema
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163 write_int_eeprom d'59'
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164 movff temperature+1,EEDATA
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165 write_int_eeprom d'60'
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166 movff month,EEDATA
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167 write_int_eeprom d'61'
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168 movff day,EEDATA
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169 write_int_eeprom d'62'
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170 movff year,EEDATA
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171 write_int_eeprom d'63'
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172
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173 get_battery_no_init:
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174 read_int_eeprom d'40' ; get lowest battery voltage seen in mV
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175 movff EEDATA,sub_b+0
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176 read_int_eeprom d'41'
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177 movff EEDATA,sub_b+1
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178 movff batt_voltage+0,sub_a+0
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179 movff batt_voltage+1,sub_a+1
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180 call sub16 ; sub_c = sub_a - sub_b
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181 btfss neg_flag ; new lowest battery voltage?
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182 return ; no, quit routine
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183 ; Yes, store new value together with the date and temperature values
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184 movff batt_voltage+0,EEDATA
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185 write_int_eeprom d'40'
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186 movff batt_voltage+1,EEDATA
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187 write_int_eeprom d'41'
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188 movff month,EEDATA
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189 write_int_eeprom d'42'
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190 movff day,EEDATA
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191 write_int_eeprom d'43'
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192 movff year,EEDATA
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193 write_int_eeprom d'44'
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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194 movff temperature+0,EEDATA
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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195 write_int_eeprom d'45'
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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196 movff temperature+1,EEDATA
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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197 write_int_eeprom d'46'
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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198 return
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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199
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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200 RTCinit: ; resets RTC
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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201 movlw 0x80
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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202 movwf TMR1H
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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203 clrf TMR1L
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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204
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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205 ; Reset RTC if any part of the time/date is out of range
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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206 movlw d'60' ; Limit
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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207 cpfslt secs ; Check part
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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208 bra RTCinit2 ; Reset time...
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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209 movlw d'60' ; Limit
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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210 cpfslt mins ; Check part
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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211 bra RTCinit2 ; Reset time...
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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212 movlw d'24' ; Limit
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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213 cpfslt hours ; Check part
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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214 bra RTCinit2 ; Reset time...
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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215 movlw d'32' ; Limit
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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216 cpfslt day ; Check part
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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217 bra RTCinit2 ; Reset time...
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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218 movlw d'12' ; Limit
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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219 cpfslt month ; Check part
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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220 bra RTCinit2 ; Reset time...
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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221 movlw d'100' ; Limit
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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222 cpfslt year ; Check part
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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223 bra RTCinit2 ; Reset time...
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
224
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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225 bsf PIE1, TMR1IE
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
226 return
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
227
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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228 RTCinit2:
96a35aeda5f2 Initial setup
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parents:
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229 movlw .00
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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230 movwf secs
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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231 movlw .00
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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232 movwf mins
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
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233 movlw .12
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
234 movwf hours
255
1efd59d689f8 small change in the set time menu, default setpoints set to 0.8, 1.0 and 1.2Bar
heinrichsweikamp
parents: 153
diff changeset
235 movlw .10
0
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
236 movwf day
255
1efd59d689f8 small change in the set time menu, default setpoints set to 0.8, 1.0 and 1.2Bar
heinrichsweikamp
parents: 153
diff changeset
237 movlw .4
0
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
238 movwf month
153
17de42ab02b6 realtime clock defaults
heinrichsweikamp
parents: 81
diff changeset
239 movlw .11
0
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
240 movwf year
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
241 bsf PIE1, TMR1IE
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
242 return