annotate code_part1/OSTC_code_asm_part1/adc_rtc.asm @ 744:7e7e98247a8a

Merge
author JeanDo
date Mon, 12 Aug 2013 15:12:14 +0200
parents 71e88ee8bbf2
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
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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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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 subU16 ; 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 SAFE_2BYTE_COPY amb_pressure, sub_b
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77
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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 subU16 ; 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-flag
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95 clrf EEADRH
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96 read_int_eeprom d'40' ; get lowest battery voltage seen in mV
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97 movff EEDATA,sub_b+0
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98 read_int_eeprom d'41'
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99 movff EEDATA,sub_b+1
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100
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101 movlw LOW d'2000' ; must be greater then 2000mV...
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102 movwf sub_a+0
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103 movlw HIGH d'2000'
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104 movwf sub_a+1
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105 call subU16 ; sub_c = sub_a - sub_b
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106 btfss neg_flag ; neg_flag=1 if eeprom40:41 < 2000
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107 bsf initialize_battery1 ; battery need to be initialised
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108
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109 movlw LOW d'4500' ; must be lower then 4500mV...
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110 movwf sub_a+0
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111 movlw HIGH d'4500'
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112 movwf sub_a+1
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113 call subU16 ; sub_c = sub_a - sub_b
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114 btfsc neg_flag ; neg_flag=1 if eeprom40:41 < 4500
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115 bsf initialize_battery1 ; battery need to be initialised
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116
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117 btfss initialize_battery1 ; battery need to be initialised?
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118 bra get_battery_no_init ; No, we have already valid values, just check for new extremas
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119
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120 get_battery_voltage_reset:
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121 ; Init EEPROM for battery control
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122 ; Reset lowest battery seen
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123 movlw LOW d'4200' ; reset to 4.2V
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124 movwf EEDATA
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125 write_int_eeprom d'40'
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126 movlw HIGH d'4200' ; reset to 4.2V
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127 movwf EEDATA
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128 write_int_eeprom d'41'
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129 movff month,EEDATA
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130 write_int_eeprom d'42'
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131 movff day,EEDATA
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132 write_int_eeprom d'43'
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133 movff year,EEDATA
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134 write_int_eeprom d'44'
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135 SAFE_2BYTE_COPY temperature,lo
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136 movff lo,EEDATA
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137 write_int_eeprom d'45'
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138 movff hi,EEDATA
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139 write_int_eeprom d'46'
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140 ; Reset charge statistics
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141 clrf EEDATA
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142 write_int_eeprom d'47' ; last complete charge
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143 write_int_eeprom d'48' ; last complete charge
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144 write_int_eeprom d'49' ; last complete charge
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145 write_int_eeprom d'50' ; total cycles
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146 write_int_eeprom d'51' ; total cycles
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147 write_int_eeprom d'52' ; total complete cycles
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148 write_int_eeprom d'53' ; total complete cycles
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149 ; Reset temperature extremas
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150 SAFE_2BYTE_COPY temperature,lo
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151 movff lo,EEDATA ; Reset mimimum extrema
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152 write_int_eeprom d'54'
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153 movff hi,EEDATA
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154 write_int_eeprom d'55'
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155 movff month,EEDATA
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156 write_int_eeprom d'56'
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157 movff day,EEDATA
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158 write_int_eeprom d'57'
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159 movff year,EEDATA
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160 write_int_eeprom d'58'
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161 movff lo,EEDATA ; Reset maximum extrema
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162 write_int_eeprom d'59'
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163 movff hi,EEDATA
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164 write_int_eeprom d'60'
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165 movff month,EEDATA
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166 write_int_eeprom d'61'
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167 movff day,EEDATA
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168 write_int_eeprom d'62'
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169 movff year,EEDATA
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170 write_int_eeprom d'63'
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171 get_battery_no_init:
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172 read_int_eeprom d'40' ; get lowest battery voltage seen in mV
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173 movff EEDATA,sub_b+0
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174 read_int_eeprom d'41'
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175 movff EEDATA,sub_b+1
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176 movff batt_voltage+0,sub_a+0
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177 movff batt_voltage+1,sub_a+1
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178 call subU16 ; sub_c = sub_a - sub_b
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179 btfss neg_flag ; new lowest battery voltage?
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180 return ; no, quit routine
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181 ; Yes, store new value together with the date and temperature values
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182 movff batt_voltage+0,EEDATA
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183 write_int_eeprom d'40'
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184 movff batt_voltage+1,EEDATA
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185 write_int_eeprom d'41'
96a35aeda5f2 Initial setup
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parents:
diff changeset
186 movff month,EEDATA
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
187 write_int_eeprom d'42'
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
188 movff day,EEDATA
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
189 write_int_eeprom d'43'
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
190 movff year,EEDATA
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
191 write_int_eeprom d'44'
341
2144f19fa1eb BUGFIX protect against ISR changing pressure/temperature while reading it.
JeanDo
parents: 297
diff changeset
192 SAFE_2BYTE_COPY temperature,lo
2144f19fa1eb BUGFIX protect against ISR changing pressure/temperature while reading it.
JeanDo
parents: 297
diff changeset
193 movff lo,EEDATA
0
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
194 write_int_eeprom d'45'
341
2144f19fa1eb BUGFIX protect against ISR changing pressure/temperature while reading it.
JeanDo
parents: 297
diff changeset
195 movff hi,EEDATA
0
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
196 write_int_eeprom d'46'
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
197 return
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
198
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
199 RTCinit: ; resets RTC
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
200 movlw 0x80
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
201 movwf TMR1H
537
3091628b2742 BUGFIX: Spurious logbook read issue
heinrichsweikamp
parents: 398
diff changeset
202 nop ; See errata DS80284E-page 2
0
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
203 clrf TMR1L
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
204 ; Reset RTC if any part of the time/date is out of range
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
205 movlw d'60' ; Limit
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
206 cpfslt secs ; Check part
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
207 bra RTCinit2 ; Reset time...
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
208 movlw d'60' ; Limit
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
209 cpfslt mins ; Check part
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
210 bra RTCinit2 ; Reset time...
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
211 movlw d'24' ; Limit
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
212 cpfslt hours ; Check part
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
213 bra RTCinit2 ; Reset time...
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
214 movlw d'32' ; Limit
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
215 cpfslt day ; Check part
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
216 bra RTCinit2 ; Reset time...
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
217 movlw d'12' ; Limit
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
218 cpfslt month ; Check part
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
219 bra RTCinit2 ; Reset time...
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
220 movlw d'100' ; Limit
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
221 cpfslt year ; Check part
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
222 bra RTCinit2 ; Reset time...
614
7a269c01192a Make sure day and month <> zero
heinrichsweikamp
parents: 605
diff changeset
223 ; Make sure day and month <> zero
7a269c01192a Make sure day and month <> zero
heinrichsweikamp
parents: 605
diff changeset
224 movlw .0
723
6fd9a9feca91 fix minor issue in rtc_init
heinrichsweikamp
parents: 720
diff changeset
225 cpfsgt day ; =0?
614
7a269c01192a Make sure day and month <> zero
heinrichsweikamp
parents: 605
diff changeset
226 incf day,F ; Yes, +1
723
6fd9a9feca91 fix minor issue in rtc_init
heinrichsweikamp
parents: 720
diff changeset
227 cpfsgt month ; =0?
614
7a269c01192a Make sure day and month <> zero
heinrichsweikamp
parents: 605
diff changeset
228 incf month,F ; Yes, +1
7a269c01192a Make sure day and month <> zero
heinrichsweikamp
parents: 605
diff changeset
229 bsf PIE1, TMR1IE ; Enable clock int
0
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
230 return
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
231
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
232 RTCinit2:
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
233 movlw .00
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
234 movwf secs
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
235 movlw .00
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
236 movwf mins
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
237 movlw .12
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
238 movwf hours
720
4452837aff37 Vault date and time during update
heinrichsweikamp
parents: 703
diff changeset
239 movlw .1
0
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
240 movwf day
720
4452837aff37 Vault date and time during update
heinrichsweikamp
parents: 703
diff changeset
241 movlw .5
0
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
242 movwf month
692
82f71a73f450 indicate first gas in surfacemode
heinrichsweikamp
parents: 665
diff changeset
243 movlw .13
0
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
244 movwf year
614
7a269c01192a Make sure day and month <> zero
heinrichsweikamp
parents: 605
diff changeset
245 bsf PIE1, TMR1IE ; Enable clock int
297
ceedf078b2d8 Gas Setup page 2 reworked, Texts 107, 108, 109,150, 149, 168, 42, 43, 53,54,55, 165 need update in french, spanish and german
Heinrichsweikamp
parents: 255
diff changeset
246 return
ceedf078b2d8 Gas Setup page 2 reworked, Texts 107, 108, 109,150, 149, 168, 42, 43, 53,54,55, 165 need update in french, spanish and german
Heinrichsweikamp
parents: 255
diff changeset
247
ceedf078b2d8 Gas Setup page 2 reworked, Texts 107, 108, 109,150, 149, 168, 42, 43, 53,54,55, 165 need update in french, spanish and german
Heinrichsweikamp
parents: 255
diff changeset
248 reset_battery_stats:
ceedf078b2d8 Gas Setup page 2 reworked, Texts 107, 108, 109,150, 149, 168, 42, 43, 53,54,55, 165 need update in french, spanish and german
Heinrichsweikamp
parents: 255
diff changeset
249 bcf uart_reset_battery_stats ; Clear flag
703
39e02673db4c some cleanup
heinrichsweikamp
parents: 702
diff changeset
250 clrf EEADRH
297
ceedf078b2d8 Gas Setup page 2 reworked, Texts 107, 108, 109,150, 149, 168, 42, 43, 53,54,55, 165 need update in french, spanish and german
Heinrichsweikamp
parents: 255
diff changeset
251 bcf PIE1,RCIE ; no interrupt for UART
ceedf078b2d8 Gas Setup page 2 reworked, Texts 107, 108, 109,150, 149, 168, 42, 43, 53,54,55, 165 need update in french, spanish and german
Heinrichsweikamp
parents: 255
diff changeset
252 call rs232_get_byte ; Get Byte
ceedf078b2d8 Gas Setup page 2 reworked, Texts 107, 108, 109,150, 149, 168, 42, 43, 53,54,55, 165 need update in french, spanish and german
Heinrichsweikamp
parents: 255
diff changeset
253 bcf PIR1,RCIF ; clear flag
ceedf078b2d8 Gas Setup page 2 reworked, Texts 107, 108, 109,150, 149, 168, 42, 43, 53,54,55, 165 need update in french, spanish and german
Heinrichsweikamp
parents: 255
diff changeset
254
ceedf078b2d8 Gas Setup page 2 reworked, Texts 107, 108, 109,150, 149, 168, 42, 43, 53,54,55, 165 need update in french, spanish and german
Heinrichsweikamp
parents: 255
diff changeset
255 btfsc rs232_recieve_overflow ; Byte received?
ceedf078b2d8 Gas Setup page 2 reworked, Texts 107, 108, 109,150, 149, 168, 42, 43, 53,54,55, 165 need update in french, spanish and german
Heinrichsweikamp
parents: 255
diff changeset
256 bra reset_battery_stats_exit ; No, exit
ceedf078b2d8 Gas Setup page 2 reworked, Texts 107, 108, 109,150, 149, 168, 42, 43, 53,54,55, 165 need update in french, spanish and german
Heinrichsweikamp
parents: 255
diff changeset
257 movlw 'f'
ceedf078b2d8 Gas Setup page 2 reworked, Texts 107, 108, 109,150, 149, 168, 42, 43, 53,54,55, 165 need update in french, spanish and german
Heinrichsweikamp
parents: 255
diff changeset
258 cpfseq RCREG ; Really reset statistics?
ceedf078b2d8 Gas Setup page 2 reworked, Texts 107, 108, 109,150, 149, 168, 42, 43, 53,54,55, 165 need update in french, spanish and german
Heinrichsweikamp
parents: 255
diff changeset
259 bra reset_battery_stats_exit ; No, exit
ceedf078b2d8 Gas Setup page 2 reworked, Texts 107, 108, 109,150, 149, 168, 42, 43, 53,54,55, 165 need update in french, spanish and german
Heinrichsweikamp
parents: 255
diff changeset
260 call rs232_get_byte ; Get byte
ceedf078b2d8 Gas Setup page 2 reworked, Texts 107, 108, 109,150, 149, 168, 42, 43, 53,54,55, 165 need update in french, spanish and german
Heinrichsweikamp
parents: 255
diff changeset
261 bcf PIR1,RCIF ; clear flag
ceedf078b2d8 Gas Setup page 2 reworked, Texts 107, 108, 109,150, 149, 168, 42, 43, 53,54,55, 165 need update in french, spanish and german
Heinrichsweikamp
parents: 255
diff changeset
262
ceedf078b2d8 Gas Setup page 2 reworked, Texts 107, 108, 109,150, 149, 168, 42, 43, 53,54,55, 165 need update in french, spanish and german
Heinrichsweikamp
parents: 255
diff changeset
263 btfsc rs232_recieve_overflow ; Byte received?
ceedf078b2d8 Gas Setup page 2 reworked, Texts 107, 108, 109,150, 149, 168, 42, 43, 53,54,55, 165 need update in french, spanish and german
Heinrichsweikamp
parents: 255
diff changeset
264 bra reset_battery_stats_exit ; No, exit
ceedf078b2d8 Gas Setup page 2 reworked, Texts 107, 108, 109,150, 149, 168, 42, 43, 53,54,55, 165 need update in french, spanish and german
Heinrichsweikamp
parents: 255
diff changeset
265 movlw 'f'
ceedf078b2d8 Gas Setup page 2 reworked, Texts 107, 108, 109,150, 149, 168, 42, 43, 53,54,55, 165 need update in french, spanish and german
Heinrichsweikamp
parents: 255
diff changeset
266 cpfseq RCREG ; Really reset statistics?
ceedf078b2d8 Gas Setup page 2 reworked, Texts 107, 108, 109,150, 149, 168, 42, 43, 53,54,55, 165 need update in french, spanish and german
Heinrichsweikamp
parents: 255
diff changeset
267 bra reset_battery_stats_exit ; No, exit
ceedf078b2d8 Gas Setup page 2 reworked, Texts 107, 108, 109,150, 149, 168, 42, 43, 53,54,55, 165 need update in french, spanish and german
Heinrichsweikamp
parents: 255
diff changeset
268 ; Yes, Reset now.
ceedf078b2d8 Gas Setup page 2 reworked, Texts 107, 108, 109,150, 149, 168, 42, 43, 53,54,55, 165 need update in french, spanish and german
Heinrichsweikamp
parents: 255
diff changeset
269 rcall get_battery_voltage_reset ; Reset Statistics
ceedf078b2d8 Gas Setup page 2 reworked, Texts 107, 108, 109,150, 149, 168, 42, 43, 53,54,55, 165 need update in french, spanish and german
Heinrichsweikamp
parents: 255
diff changeset
270 movlw 'f'
ceedf078b2d8 Gas Setup page 2 reworked, Texts 107, 108, 109,150, 149, 168, 42, 43, 53,54,55, 165 need update in french, spanish and german
Heinrichsweikamp
parents: 255
diff changeset
271 movwf TXREG
ceedf078b2d8 Gas Setup page 2 reworked, Texts 107, 108, 109,150, 149, 168, 42, 43, 53,54,55, 165 need update in french, spanish and german
Heinrichsweikamp
parents: 255
diff changeset
272 call rs232_wait_tx ; Wait for uart
ceedf078b2d8 Gas Setup page 2 reworked, Texts 107, 108, 109,150, 149, 168, 42, 43, 53,54,55, 165 need update in french, spanish and german
Heinrichsweikamp
parents: 255
diff changeset
273
ceedf078b2d8 Gas Setup page 2 reworked, Texts 107, 108, 109,150, 149, 168, 42, 43, 53,54,55, 165 need update in french, spanish and german
Heinrichsweikamp
parents: 255
diff changeset
274 reset_battery_stats_exit:
ceedf078b2d8 Gas Setup page 2 reworked, Texts 107, 108, 109,150, 149, 168, 42, 43, 53,54,55, 165 need update in french, spanish and german
Heinrichsweikamp
parents: 255
diff changeset
275 bsf PIE1,RCIE ; re-enable interrupt for UART
ceedf078b2d8 Gas Setup page 2 reworked, Texts 107, 108, 109,150, 149, 168, 42, 43, 53,54,55, 165 need update in french, spanish and german
Heinrichsweikamp
parents: 255
diff changeset
276 goto surfloop_loop ; return to surface loop