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annotate src/start.asm @ 19:06e19a880df6

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author heinrichsweikamp
date Wed, 03 Jul 2013 11:51:46 +0200
parents 7b06f20881be
children 79b2084fd75a
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1 ;=============================================================================
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2 ;
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3 ; File start.asm
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4 ;
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5 ; Startup subroutines
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6 ;
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7 ; Copyright (c) 2011, JD Gascuel, HeinrichsWeikamp, all right reserved.
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8 ;=============================================================================
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9 ; HISTORY
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10 ; 2011-08-06 : [mH] moving from OSTC code
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11
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12 #include "ostc3.inc" ; Mandatory header
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13 #include "ms5541.inc"
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14 #include "isr.inc"
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15 #include "shared_definitions.h" ; Mailbox from/to p2_deco.c
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16 #include "eeprom_rs232.inc"
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17 #include "math.inc"
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18 #include "tft.inc"
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19 #include "surfmode.inc"
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20 #include "wait.inc"
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21 #include "rtc.inc"
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22 #include "external_flash.inc"
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23 #include "convert.inc"
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24 #include "strings.inc"
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25 #include "tft_outputs.inc"
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26
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27 extern init_ostc3
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28 extern option_restore_all
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29
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30 ;=============================================================================
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31 ; Reset vector: What to do on device wake-up and hard reset.
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32 ;
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33 reset_v code 0x00000
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34 ; goto start
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35 goto 0x1FF00 ; Bootloader
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36
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37 ORG 0x00004 ; Needed for second-level bootloader
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38 goto start
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39 ;=============================================================================
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40 boot CODE
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41 global start
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42
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43 start:
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44 lfsr FSR0,0x000 ; Clear rambank 0-14
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45 clear_rambank:
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46 clrf POSTINC0
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47 movlw 0x0F
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48 cpfseq FSR0H ; Bank 14 done?
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49 bra clear_rambank ; clear...
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50
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51 call init_ostc3
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52 call speed_normal
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53
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54 bsf no_sensor_int ; disable sensor interrupt
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55
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56 call disable_rs232 ; disable UART module
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57 ; Air pressure compensation after reset
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58 call get_calibration_data ; Get calibration data from pressure sensor
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59 banksel common ; get_calibration_data uses isr_backup
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60 bcf no_sensor_int ; normal sensor interrupt mode
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61
10
55dfc8f6093f sensor status on power-on reset
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62 call TFT_DisplayOff ; display off
55dfc8f6093f sensor status on power-on reset
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63 bsf LEDr ; Status LED
0
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64 bcf pressure_refresh
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65 ; First pass will not have valid temperature!
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66 btfss pressure_refresh ; Air pressure compensation
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67 bra $-2
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68 ; Second pass
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69 bcf pressure_refresh
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70 btfss pressure_refresh ; Air pressure compensation
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71 bra $-2
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55dfc8f6093f sensor status on power-on reset
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72 bcf LEDr
0
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73
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74 clrf rel_pressure+0
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75 clrf rel_pressure+1
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76 clrf surface_interval+0
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77 clrf surface_interval+1
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78
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79 SAFE_2BYTE_COPY amb_pressure, last_surfpressure
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80
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81 movlw LOW max_surfpressure
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82 movff WREG,sub_a+0 ; max. "allowed" airpressure in mbar
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83 movlw HIGH max_surfpressure
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84 movff WREG,sub_a+1 ; max. "allowed" airpressure in mbar
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85 movff last_surfpressure+0,sub_b+0
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86 movff last_surfpressure+1,sub_b+1
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87 call subU16 ; sub_c = sub_a - sub_b
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88 btfss neg_flag ; Is 1080mbar < amb_pressure ?
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89 bra start_copy_pressure ; NO: current airpressure is lower then "allowed" airpressure, ok!
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90
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91 ; not ok! Overwrite with max. "allowed" airpressure
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92 movlw LOW max_surfpressure
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93 movff WREG,last_surfpressure+0 ; max. "allowed" airpressure in mbar
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94 movlw HIGH max_surfpressure
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95 movff WREG,last_surfpressure+1 ; max. "allowed" airpressure in mbar
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96
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97 start_copy_pressure:
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98 movff last_surfpressure+0,last_surfpressure_15min+0
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99 movff last_surfpressure+1,last_surfpressure_15min+1
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100 movff last_surfpressure+0,last_surfpressure_30min+0
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101 movff last_surfpressure+1,last_surfpressure_30min+1 ; Rests all airpressure registers
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102
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103 ; reset deco data for surface mode
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104 movlw d'79'
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105 movff WREG,char_I_N2_ratio ; 79% N2
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106 SAFE_2BYTE_COPY amb_pressure,int_I_pres_respiration ; copy for deco routine
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107 movff int_I_pres_respiration+0,int_I_pres_surface+0 ; copy for desat routine
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108 movff int_I_pres_respiration+1,int_I_pres_surface+1
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109
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110 extern deco_reset
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111 call deco_reset
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112 call deco_calc_desaturation_time ; calculate desaturation time
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113 banksel common
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114 call deco_calc_wo_deco_step_1_min ; calculate deco in surface mode
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115 banksel common
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116 clrf nofly_time+0 ; Reset NoFly
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117 clrf nofly_time+1
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118 clrf desaturation_time+0 ; Reset Desat
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119 clrf desaturation_time+1
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120 bcf menubit ; clear menu flag
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121 ; Check for Power-on reset here
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122 extern new_battery_menu
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123 extern use_old_batteries
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124
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125 btfsc RCON,POR ; Was this a power-on reset?
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126 goto use_old_batteries ; No, load last stored battery values
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127 ; "new_battery_menu" and "use_old_batteries" 'goto' back to "power_on_return"
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128
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129 ; Yes
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130 call rtc_init ; init clock
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131 goto new_battery_menu ; show "New battery dialog"
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132 ; "new_battery_menu" and "use_old_batteries" 'goto' back to "power_on_return"
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133
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134 global power_on_return
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135 power_on_return:
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136 bsf RCON,POR ; Set bit for next detection
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137
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138 ; check firmware and reset Custom Functions after an update
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139 movlw d'1'
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140 movwf EEADR
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141 movlw d'1'
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142 movwf EEADRH
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143 call read_eeprom ; read current version x
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144 movff EEDATA,temp1
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145 incf EEADR,F ; set to 0x102
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146 call read_eeprom ; read current version y
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147 movff EEDATA,temp2
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148 clrf EEADRH ; Reset EEADRH
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149
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150 movlw softwareversion_x
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151 cpfseq temp1 ; compare version x
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152 bra check_firmware_new ; is not equal -> reset CF and store new version in EEPROM
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153
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154 movlw softwareversion_y
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155 cpfseq temp2 ; compare version y
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156 bra check_firmware_new ; is not equal -> reset CF and store new version in EEPROM
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157 bra restart ; x and y are equal -> do not reset cf
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158
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159 check_firmware_new:
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160 call speed_normal
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161 call TFT_boot ; Initialize TFT (includes clear screen)
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162 clrf CCPR1L ; Backlight off
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163 WIN_TOP .50
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164 WIN_LEFT .10
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165 movlw LOW 0x1E000
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166 movwf TBLPTRL
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167 movlw HIGH 0x1E000
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168 movwf TBLPTRH
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169 movlw UPPER 0x1E000
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170 movwf TBLPTRU
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171 extern color_image
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172 call color_image ; Show logo
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173 call TFT_standard_color
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174 WIN_SMALL .10,.100
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175 STRCPY_TEXT_PRINT tNewFirmware1 ; "Update sucessfull!"
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176 WIN_SMALL .10,.140
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177 STRCPY_TEXT tNewFirmware2 ; "New Firmware: "
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178 movlw softwareversion_x
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179 movwf lo
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180 bsf leftbind
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181 output_8
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182 PUTC "."
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183 movlw softwareversion_y
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184 movwf lo
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185 output_8
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186 bcf leftbind
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187 STRCAT_PRINT "" ; Print second row
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188 call TFT_Display_FadeIn ; Display resulting surface screen.
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189
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190 ; place "after-update reset" here...
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191 movlw d'1' ; store current version in EEPROM
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192 movwf EEADR
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193 movlw d'1'
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194 movwf EEADRH
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195 movlw softwareversion_x
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196 movwf EEDATA
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197 call write_eeprom ; write version x
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198 incf EEADR,F ; set to 0x102
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199 movlw softwareversion_y
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200 movwf EEDATA
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201 call write_eeprom ; write version y
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202 clrf EEADRH ; Reset EEADRH
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203
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204 movlw .7
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205 movwf lo
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206 check_firmware_new2:
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207 ; Wait 1 second
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208 bcf onesecupdate
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209 btfss onesecupdate
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210 bra $-2
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211 decfsz lo,F ; Wait 10 seconds...
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212 bra check_firmware_new2
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213
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214 global restart
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215 restart:
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216 clrf STKPTR ; Never return from here
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217 extern option_save_all
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218 btfsc menubit ; Return from Menu/COMM mode or timeout?
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219 call option_save_all ; Yes, save all settings into EEPROM
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220
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221 clrf flag1 ; clear all flags
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222 clrf flag2
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223 clrf flag3
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224 clrf flag4
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225 clrf flag5
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226 clrf flag6
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227 clrf flag7
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228 clrf flag8
16
7b06f20881be calm compass reading for minor heading changes
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229 clrf flag9
0
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230 bsf tft_is_dimming ; TFT is dimming up (soon), ignore ambient sensor!
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231 ; Select high altitude (Fly) mode?
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232 movff last_surfpressure_30min+0,sub_b+0
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233 movff last_surfpressure_30min+1,sub_b+1
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234 movlw HIGH high_altitude_threshold
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235 movwf sub_a+1
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236 movlw LOW high_altitude_threshold ; Hard-wired 880mbar
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237 movwf sub_a+0
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238 call subU16 ; sub_c = sub_a - sub_b
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239 btfss neg_flag ; Result negative (Ambient>880mbar)?
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240 bsf high_altitude_mode ; No, Set Flag!
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241
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242 call ext_flash_disable_protection ; Disable write protection for external flash
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243
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244 extern testloop
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245 ; goto testloop
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246
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247 goto surfloop ; Jump to Surfaceloop!
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248
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249 ;=============================================================================
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250 ; Setup all flags and parameters for divemode and simulator computations.
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251 ;
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252 global restart_set_modes_and_flags
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253 restart_set_modes_and_flags: ; "Call"ed from divemode, as well!
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254 call option_restore_all ; Restore everything from EEPROM
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255 movff opt_dive_mode,lo ; 0=OC, 1=CC, 2=Gauge, 3=Apnea
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256
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257 bcf FLAG_apnoe_mode
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258 bcf FLAG_ccr_mode ; =1: CCR mode (Fixed ppO2 or Sensor) active
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259 bcf FLAG_gauge_mode ; =1: In Gauge mode
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260 call disable_ir ; IR off
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261
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262 tstfsz lo
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263 bra restart_set_modes_and_flags2
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264 ; OC Mode
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265 return
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266
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267 restart_set_modes_and_flags2:
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268 decfsz lo,F
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269 bra restart_set_modes_and_flags3
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270 ; CC Mode
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271 bsf FLAG_ccr_mode ; =1: CCR mode (Fixed ppO2 or Sensor) active
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272 call enable_ir ; Enable IR-Port
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273 return
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274
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275 restart_set_modes_and_flags3:
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276 decfsz lo,F
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277 bra restart_set_modes_and_flags4
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278 ; Gauge Mode
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279 bsf FLAG_gauge_mode ; =1: In Gauge mode
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280 return
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281
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282 restart_set_modes_and_flags4:
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283 ; Apnea Mode
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284 bsf FLAG_apnoe_mode
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285 return ; start in Surfacemode
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286
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287 END