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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 ; Routines for sleepmode
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14 ; written by: Matthias Heinrichs, info@heinrichsweikamp.com
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15 ; written: 050520
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16 ; last updated: 090507
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17 ; known bugs:
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18 ; ToDo:
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19 sleeploop: ; enter sleepmode!
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20 ; first check if the 16 hash char are=0
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21 lfsr FSR2, char_O_hash
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22 movlw d'16'
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23 movwf temp1
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24 sleeploop1:
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25 tstfsz POSTINC2 ; Test hash values
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26 bra sleeploop2 ; At least one char is not zero -> Do not build hash
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27 decfsz temp1,F
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28 bra sleeploop1
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29 ; build hash (about 90sek @ 16MHz)
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30 call PLED_ClearScreen ; clear
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31 DISPLAYTEXT .1 ; "Building MD2 hash"
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32 DISPLAYTEXT .2 ; "Please wait..."
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33 call deco_main_hash ; calculate MD2 hash
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34 movlb b'00000001' ; Back to Bank1
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35 sleeploop2:
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36 call PLED_DisplayOff ; display off
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37 call disable_rs232 ; disable UART module
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38 clrf divemins+0
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39 clrf divemins+1
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40 bcf TRISB,6
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41 bcf TRISB,7
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42 bcf PORTB,6
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43 bcf PORTB,7 ; Disable UART
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44 sleeploop_loop:
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45 btfsc oneminupdate ; one minute in sleep?
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46 rcall onemin_sleep ; do oneminute tasks, e.g. calculate desaturation
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47
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48 btfsc onesecupdate ; one second in sleep?
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49 rcall onesec_sleep ; check switches, check pressure sensor, etc.
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50
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51 btfss sleepmode ; wake up? (This bit will be set in other routines)
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52 goto restart ; yes
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53 nop
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54 sleep ; Sleep until Timer1 will wake up the device
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55 nop
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56 bra sleeploop_loop ; do loop until someting happens
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57
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58
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59 onemin_sleep:
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60 call get_battery_voltage ; get battery voltage
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61 btfsc enter_error_sleep ; Enter Fatal Error Routine?
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62 goto fatal_error_sleep ; Yes (In Sleepmode_vxx.asm!)
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63
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64 call calc_surface_interval ; Increases Surface-Interval time
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65 call nofly_timeout60 ; check for no fly time
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66 ; adjust airpressure compensation any 15 minutes
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67 incf divemins+1,F ; counts to 14...
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68 movlw d'14'
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69 cpfsgt divemins+1
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70 bra onemin_sleep2 ; 15 minutes not done!
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71
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72 rcall pressuretest_sleep_fast ; Gets pressure without averaging (faster!)
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73
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74 call check_temp_extrema ; Check for temperature extremas
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75
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76 call main_calc_CNS_decrease_15min ; compute CNS decay in sleep only
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77 movlb b'00000001'
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78 movff last_surfpressure_15min+0,last_surfpressure_30min+0 ; save older airpressure
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79 movff last_surfpressure_15min+1,last_surfpressure_30min+1 ; save older airpressure
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80 movff amb_pressure+0,last_surfpressure_15min+0 ; save new airpressure
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81 movff amb_pressure+1,last_surfpressure_15min+1 ; save new airpressure
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82
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83 clrf divemins+1 ; reset counter
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84 GETCUSTOM15 d'7' ; loads max_sufpressure into lo, hi
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85 movff lo,sub_a+0 ; max. "allowed" airpressure in mBar
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86 movff hi,sub_a+1
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87 movff last_surfpressure_15min+0,sub_b+0
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88 movff last_surfpressure_15min+1,sub_b+1
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89 call sub16 ; sub_c = sub_a - sub_b
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90 btfsc neg_flag
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91 bra onemin_sleep1
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92 bra onemin_sleep2 ; current airpressure is lower then "allowed" airpressure, ok!
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93 onemin_sleep1: ; not ok! Overwrite with max. "allowed" airpressure
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94 GETCUSTOM15 d'7' ; loads max_sufpressure into lo, hi
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95 movff lo,last_surfpressure_15min+0 ; max. "allowed" airpressure in mBar
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96 movff hi,last_surfpressure_15min+1 ; max. "allowed" airpressure in mBar
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97
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98 onemin_sleep2:
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99 ;calc_deko_sleepmode:
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100 movff amb_pressure+0,int_I_pres_respiration+0 ; LOW copy pressure to deco routine
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101 movff amb_pressure+1,int_I_pres_respiration+1 ; HIGH
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102 GETCUSTOM8 d'11' ; Saturation multiplier %
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103 movwf wait_temp
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104 movff wait_temp,char_I_saturation_multiplier
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105 GETCUSTOM8 d'12' ; Desaturation multiplier %
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106 movwf wait_temp
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107 movff wait_temp,char_I_desaturation_multiplier
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108 call deco_main_calc_wo_deco_step_1_m ; "calc_tissue_sleep"
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109 movlb b'00000001' ; RAM Bank1 selected
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110
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111 bcf oneminupdate ; all done
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112 return
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113
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114 onesec_sleep:
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115 call test_charger ; charger on?
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116
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117 btfss nofly_active
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118 bra onesec_sleep_nonofly
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119
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120 call set_LEDnofly ; Set nofly LED
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121
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122 nop
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123 sleep
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124 nop
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125
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126 onesec_sleep_nonofly:
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127 call clear_LEDnofly ; Clear nofly LED
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128 incf divemins+0,F ; counts to #test_pressure_in_sleep (5)
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129 movlw d'5'
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130 cpfsgt divemins+0 ; here: temp variable
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131 bra onesec_sleep1 ; #test_pressure_in_sleep not done yet
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132 rcall pressuretest_sleep_fast ; Gets pressure without averaging (faster!)
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133
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134 ; compare current ambient pressure with threshold
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135 GETCUSTOM15 d'6' ; loads pressure threshold into lo,hi
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136 movff lo,sub_a+0 ; power on if ambient pressure is greater threshold
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137 movff hi,sub_a+1
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138 movff amb_pressure+0,sub_b+0
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139 movff amb_pressure+1,sub_b+1
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140 call sub16 ; sub_c = sub_a - sub_b
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141 bsf sleepmode
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142 btfsc neg_flag ; Wake up from Sleep?
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143 bcf sleepmode ; amb_pressure>pressure_offset_divemode: wake up!
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144 clrf divemins+0
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145 onesec_sleep1:
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146 bcf onesecupdate ; all done.
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147 btfsc switch_left
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148 bra onesec_sleep1a
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149 btfsc switch_right
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150 bra onesec_sleep1a
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151 ; No button pressed
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152 bcf INTCON,INT0IF ; Clear flag
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153 bcf INTCON3,INT1IF ; Clear flag
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154 bcf switch_right_isr
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155 bcf switch_left_isr
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156 bcf switch_right
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157 bcf switch_left
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158 bcf T0CON,TMR0ON ; Stop Timer 0
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159 return
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160 onesec_sleep1a: ; At least one button pressed....
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161 bcf INTCON,INT0IF ; Clear flag
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162 bcf INTCON3,INT1IF ; Clear flag
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163 bcf switch_right_isr
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164 bcf switch_left_isr
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165 bcf switch_right
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166 bcf switch_left
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167 bcf T0CON,TMR0ON ; Stop Timer 0
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168 bcf sleepmode ; wake up!
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169 bsf show_startup_screen ;
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170 return
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171
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172 pressuretest_sleep_fast: ; Get pressure without averaging (Faster to save some power in sleep mode)
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173 call get_temperature_start ; and start temperature integration (73,5us)
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174 sleep
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175 nop
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176 sleep
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177 nop
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178 sleep ; Wait at least 35ms (every 16.5ms Timer1 wakeup)
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179 call get_temperature_value ; State 1: Get temperature
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180 call get_pressure_start ; Start pressure integration.
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181 sleep
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182 nop
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183 sleep
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184 nop
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185 sleep ; Wait at least 35ms (every 16.5ms Timer1 wakeup)
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186 call get_pressure_value ; State2: Get pressure (51us)
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187 call calculate_compensation ; calculate temperature compensated pressure (233us)
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188 return
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189
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190 fatal_error_sleep:
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191 clrf INTCON
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192 clrf INTCON2
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193 clrf INTCON3
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194 bcf ADCON0,0 ; AD converter off
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195 call disable_rs232 ; disable UART module
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196 movlw b'00010000'
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197 movwf TRISA
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198 clrf PORTA ; And pulled to GND
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199 clrf TRISB ; All output
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200 clrf PORTB ; And pulled to GND
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201 movlw b'00011101' ; UART
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202 movwf TRISC
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203 clrf PORTC ; And pulled to GND
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204 clrf TRISD ; All output
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205 clrf PORTD ; And pulled to GND
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206 clrf TRISE ; All output
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207 clrf PORTE ; And pulled to GND
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208 clrf T0CON ; Timer OFF
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209 clrf T1CON ; Timer OFF
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210 clrf T2CON ; Timer OFF
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211 clrf OSCTUNE
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212 movlw b'00000010' ; 31kHz
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213 movwf OSCCON
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214 bsf WDTCON,0 ; Watchdog timer on...
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215 fatal_error_sleep_loop: ; Device will never quit this loop!
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216 movff fatal_error_code,temp4
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217 movlw d'15'
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218 movwf temp1
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219 fatal_error_sleep_loop1:
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220 sleep
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221 nop
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222 decfsz temp1,F
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223 bra fatal_error_sleep_loop1
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224 fatal_error_sleep_loop2:
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225 call set_LEDy
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226 clrwdt
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227 WAIT10US d'5'
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228 call clear_LEDy
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229 sleep
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230 nop
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231 decfsz temp4,F
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232 bra fatal_error_sleep_loop2
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233 bra fatal_error_sleep_loop |
