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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 ; Start and init
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19 ; written by: Matthias Heinrichs, info@heinrichsweikamp.com
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20 ; written: 10/13/04
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21 ; last updated: 06/24/08
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22 ; known bugs:
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23 ; ToDo:
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24
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25 start:
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26 movlb b'00000001' ; ram bank 1 selected
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27 call init
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28 btfsc divemode ; Reset from Divemode?
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29 call PLED_resetdebugger ; Yes! Something went wrong, show reset informations
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30
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31 clrf STKPTR ; Clear Stackpointer
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32 lfsr FSR0, 109h ; Clear rambank 1-9, do not delete RTC registers
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33 clear_rambank:
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34 clrf POSTINC0
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35 movlw 0x0A
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36 cpfseq FSR0H ; Bank 9 done?
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37 bra clear_rambank ; clear...
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38
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39 ; Defaults for RTC
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40 call disable_rs232 ; disable UART module
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41 call RTCinit ; reset RTC
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42
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43 ; Air pressure compensation after reset
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44 call get_calibration_data ; Get calibration data from pressure sensor
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45
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46 bcf pressure_refresh
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47 wait_start_pressure:
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48 btfss pressure_refresh ; Air pressure compensation
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49 bra wait_start_pressure
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50
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51 clrf rel_pressure+0
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52 clrf rel_pressure+1
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53 clrf surface_interval+0
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54 clrf surface_interval+1
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55
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56 bsf sleepmode ; Routine only works in sleepmode...
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57 call pressuretest_sleep_fast ; Gets pressure without averaging (faster!)
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58 bcf sleepmode ; Normal mode again
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59
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60 movff amb_pressure+0,last_surfpressure+0
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61 movff amb_pressure+1,last_surfpressure+1
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62 movff amb_pressure+0,last_surfpressure_15min+0
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63 movff amb_pressure+1,last_surfpressure_15min+1
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64 movff amb_pressure+0,last_surfpressure_30min+0
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65 movff amb_pressure+1,last_surfpressure_30min+1 ; Rests all airpressure registers
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66
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67 ; reset deco data
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68 incf nofly_time+0,F ; =1
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69 clrf wait_temp ; Use as buffer
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70 movff wait_temp,char_I_He_ratio ; No He at the Surface
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71 movlw d'79' ; 79% N2
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72 movwf wait_temp ; Use as buffer
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73 movff wait_temp,char_I_N2_ratio ; No He at the Surface
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74 movff amb_pressure+0,int_I_pres_respiration+0 ; copy surface air pressure to deco routine
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75 movff amb_pressure+1,int_I_pres_respiration+1
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76
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77 call deco_main_clear_tissue ;
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78 movlb b'00000001' ; select ram bank 1
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79 call deco_main_calc_desaturation_time; calculate desaturation time
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80 movlb b'00000001' ; select ram bank 1
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81 call main_clear_CNS_fraction ; clear CNS
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82 movlb b'00000001' ; select ram bank 1
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83 call calc_deko_surfmode ; calculate desaturation every minute
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84 movlb b'00000001' ; select ram bank 1
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85 call deco_main_calc_wo_deco_step_1_m ; calculate deco in surface mode
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86 movlb b'00000001' ; select ram bank 1
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87
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88 ; check firmware and reset Custom Functions after an update
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89 movlw LOW 0x101
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90 movwf EEADR
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91 movlw HIGH 0x101
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92 movwf EEADRH
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93 call read_eeprom ; read current version x
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94 movff EEDATA,temp1
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95 incf EEADR,F ; set to 0x102
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96 call read_eeprom ; read current version y
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97 movff EEDATA,temp2
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98 clrf EEADRH ; Reset EEADRH
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99
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100 movlw softwareversion_x
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101 cpfseq temp1 ; compare version x
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102 bra check_firmware_new ; is not equal -> reset CF and store new version in EEPROM
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103
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104 movlw softwareversion_y
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105 cpfseq temp2 ; compare version y
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106 bra check_firmware_new ; is not equal -> reset CF and store new version in EEPROM
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107 bra restart ; x and y are equal -> do not reset cf
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108
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109 check_firmware_new:
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110 movlw LOW 0x101 ; store current version in EEPROM
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111 movwf EEADR
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112 movlw HIGH 0x101
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113 movwf EEADRH
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114 movlw softwareversion_x
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115 movwf EEDATA
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116 call write_eeprom ; write version x
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117 incf EEADR,F ; set to 0x102
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118 movlw softwareversion_y
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119 movwf EEDATA
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120 call write_eeprom ; write version y
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121 clrf EEADRH ; Reset EEADRH
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122 ; goto reset_all_cf ; resets all custom functions bank0 and bank1 and jumps to "restart"
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123 ; goto reset_all_cf_bank1 ; resets all custom functions bank1 and jumps to "restart"
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124
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125 restart:
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126 call clear_LEDr
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127 call clear_LEDnofly ; all LEDs off
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128 call PLED_boot ; PLED boot (Incl. Clear Screen!)
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129 WIN_TOP .0
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130 WIN_LEFT .0
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131 WIN_FONT FT_SMALL
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132 WIN_INVERT .0 ; Init new Wordprocessor
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133 movlw 0xFF
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134 movwf oled1_temp
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135 movff oled1_temp,win_color1
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136 movlw 0xFF
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137 movwf oled1_temp
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138 movff oled1_temp,win_color2
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139 call I2CReset ; Just in Case any I2C device blocks the Bus
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140 movff last_surfpressure_30min+0,last_surfpressure+0 ; Use 30min old airpressure
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141 movff last_surfpressure_30min+1,last_surfpressure+1 ; Use 30min old airpressure
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142
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143 ; Check if new CF were added in the last firmware version
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144 clrf EEADRH
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145 read_int_eeprom d'92' ; Read number of CF used in this firmware
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146 movlw max_custom_number ; Defined in definitions.asm
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147 cpfseq EEDATA ; Compare with last version
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148 bra restart_01 ; New CF, show warning and store new number
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149 bra restart_1 ; No new CF, continue with boot
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150 restart_01:
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151 ; Save new number of current CF count
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152 rcall display_new_cf_installed; Show warning
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153 movlw max_custom_number ; Defined in definitions.asm
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154 movwf EEDATA
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155 write_int_eeprom d'92' ; Store number of CF used in this firmware
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156
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157 restart_1:
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158 GETCUSTOM15 .31
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159 movlw LOW .666
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160 cpfseq lo
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161 bra restart_2 ; Not equal!
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162 movlw HIGH .666
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163 cpfseq hi
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164 bra restart_2 ; Not equal!
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165 bra restart_3 ; Skip screen....
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166
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167 restart_2:
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168 btfsc show_startup_screen ; Show start screen?
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169 call startup_screen1 ;1/2
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170 btfsc show_startup_screen ; Show start screen?
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171 call startup_screen2 ;2/2
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172
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173 restart_3:
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174 clrf flag1 ; clear all flags
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175 clrf flag2
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176 clrf flag3
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177 clrf flag4
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178 clrf flag5
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179 clrf flag6
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180 clrf flag7
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181 clrf flag8
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182 clrf flag9
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183 clrf flag10
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184 clrf flag11
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185 clrf flag12
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186 clrf flag13
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187 clrf flag14
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188 clrf flag15
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189
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190 ; Set Debug mode?
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191 read_int_eeprom d'39'
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192 bsf debug_mode
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193 movlw d'1'
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194 cpfseq EEDATA
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195 bcf debug_mode ; clear flag if <> 1
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196
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197 goto surfloop ; Jump to Surfaceloop!
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198
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199
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200 display_new_cf_installed:
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201 call PLED_new_cf_warning ; Display new CF warning screen
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202 movlw d'20' ; timeout for warning screen
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203 bra startup_screen3a ; Will RETURN after timeout or button press
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204
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205 restart_set_modes_and_flags: ; "Call"ed from divemode, as well!
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206 bcf gauge_mode
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207 bcf FLAG_const_ppO2_mode
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208 bcf FLAG_apnoe_mode
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209 clrf EEADRH
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210 read_int_eeprom d'34' ; Read deco data
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211 movlw d'1' ; Gauge mode
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212 cpfseq EEDATA
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213 bra restart_3_test_ppO2_mode; check for ppO2 mode
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214 bsf gauge_mode ; Set flag for gauge mode
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215 movlw d'0'
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216 movwf wait_temp
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217 movff wait_temp,char_I_deco_model ; Clear Flagbyte
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218 return ; start in Surfacemode
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219 restart_3_test_ppO2_mode:
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220 movlw d'2' ; const ppO2 mode
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221 cpfseq EEDATA
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222 bra restart_3_test_apnoe_mode; check for apnoe mode
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223 bsf FLAG_const_ppO2_mode ; Set flag for ppO2 mode
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224 movlw d'0'
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225 movwf wait_temp
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226 movff wait_temp,char_I_deco_model ; Clear Flagbyte
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227 return ; start in Surfacemode
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228 restart_3_test_apnoe_mode:
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229 movlw d'3' ; Apnoe mode
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230 cpfseq EEDATA
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231 bra restart_4_test_gf_mode ; check for GF OC mode
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232 bsf FLAG_apnoe_mode ; Set flag for Apnoe Mode
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233 movlw d'0'
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234 movwf wait_temp
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235 movff wait_temp,char_I_deco_model ; Clear Flagbyte
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236 return ; start in Surfacemode
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237 restart_4_test_gf_mode:
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238 movlw d'4' ; GF OC mode
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239 cpfseq EEDATA
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240 bra restart_5_test_gfO2_mode; check for GF CC mode
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241 movlw d'1'
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242 movwf wait_temp
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243 movff wait_temp,char_I_deco_model ; Set Flagbyte for GF method
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244 return ; start in Surfacemode
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245 restart_5_test_gfO2_mode:
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246 movlw d'5' ; GF CC mode
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247 cpfseq EEDATA
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248 return ; Start in Surfacemode
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249 bsf FLAG_const_ppO2_mode ; Set flag for ppO2 mode
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250 movlw d'1'
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251 movwf wait_temp
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252 movff wait_temp,char_I_deco_model ; Set Flagbyte for GF method
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253 return ; start in Surfacemode
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254
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255 startup_screen1:
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256 call PLED_ClearScreen
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257 call PLED_startupscreen1 ; show startup sreen
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258 startup_screen1_2:
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259 movlw d'10' ; timeout for startup screen
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260 movwf temp1
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261 WAITMS d'200'
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262 bcf switch_left
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263 bcf switch_right
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264 screen1_loop:
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265 btfsc onesecupdate ; do every second tasks?
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266 call set_dive_modes ; tests if depth>threshold
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267 btfsc onesecupdate ; do every second tasks?
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268 decf temp1,F
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269 bcf onesecupdate ; every second tasks done
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270
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271 tstfsz temp1 ; timout occured?
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272 bra screen1_loop2 ; no
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273 return
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274
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275 screen1_loop2:
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276 btfsc divemode ; Divemode active?
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277 return
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278 btfsc switch_left ; Ack?
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279 return
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280 btfsc switch_right ; Ack?
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281 return
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282 bra screen1_loop ; loop screen
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283
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284 startup_screen2:
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285 call PLED_ClearScreen ; Page 1
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286 call PLED_startupscreen2 ; show startup sreen
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287 bra startup_screen1_2
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288
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289 startup_screen3a:; WARNING: Also used for decodescriptions and CF Warning screen!
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290 movwf temp1
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291 WAITMS d'200'
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292 bcf switch_left
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293 bcf switch_right
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294 screen3_loop:
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295 btfsc onesecupdate ; do every second tasks?
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296 call set_dive_modes ; tests if depth>threshold
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297
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298 btfsc onesecupdate ; do every second tasks?
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299 decf temp1,F
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300 bcf onesecupdate ; every second tasks done
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301
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302 tstfsz temp1 ; timout occured?
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303 bra screen3_loop2 ; no
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304 return
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305 screen3_loop2:
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306 btfsc switch_left ; Ack?
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307 return
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308 btfsc switch_right ; Ack?
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309 return
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310 bra screen3_loop ; loop screen
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311
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312 init:
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313 movlw b'01101100' ; 4MHz (x4 PLL)
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314 movwf OSCCON
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315
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316 movlw b'00010001' ; I/O Ports
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317 movwf TRISA
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318 clrf PORTA
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319 movlw b'00000011'
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320 movwf TRISB
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321 clrf PORTB
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322 movlw b'11011101' ; UART
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323 movwf TRISC
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324 clrf PORTC
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325 movlw b'00000000'
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326 movwf TRISE
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327 clrf PORTE
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328 movlw b'00000000'
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329 movwf TRISD
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330 clrf PORTD
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331
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332 movlw b'01000000' ; Bit6: PPL enable
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333 movwf OSCTUNE
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334
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335 movlw b'00011111' ; Timer0
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336 movwf T0CON
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337
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338 movlw b'00000111' ; Timer1
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339 movwf T1CON
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340
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341 movlw b'11010000' ; Interrups
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342 movwf INTCON
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343 movlw b'00000101'
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344 movwf INTCON2
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345 movlw b'00001000'
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346 movwf INTCON3
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347 movlw b'00100001'
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348 movwf PIE1
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349 movlw b'00000000'
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350 movwf PIE2
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351 clrf RCON
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352
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353 movlw b'00000000' ; A/D Converter
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354 movwf ADCON0
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355 movlw b'00001110'
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356 movwf ADCON1
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357 movlw b'10001010' ; Right justified
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358 movwf ADCON2
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359
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360 clrf SSPCON1 ; Set I²C Mode
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361 movlw b'00000000'
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362 movwf SSPSTAT
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363 movlw b'00101000'
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364 movwf SSPCON1
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365 movlw b'00000000'
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366 movwf SSPCON2
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367 movlw d'8' ; 400kHz I2C clock @ 16MHz Fcy
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368 movwf SSPADD
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369
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370 clrf CCP1CON ; PWM Module off
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371 clrf ECCP1CON ; PWM Module off
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372
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373 movlw b'00000111' ; Comperator Module off
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374 movwf CMCON
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375
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376 movlw b'00100000'
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377 movwf CANCON ; ECAN Module OFF
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378
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379 movlw b'00100100' ; UART
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380 movwf TXSTA
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381 movlw b'10010000'
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382 movwf RCSTA
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383 movlw b'00001000'
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384 movwf BAUDCON
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385 clrf SPBRGH
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386 movlw d'34'
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387 movwf SPBRG
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388 clrf RCREG
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389 clrf PIR1
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390 return
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