annotate code_part1/OSTC_code_asm_part1/altimeter.asm @ 173:4a7a778d9e49

CF09 limits
author heinrichsweikamp
date Wed, 02 Feb 2011 11:09:39 +0100
parents 0f7ca37b1412
children 53b16a746166
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1 ;=============================================================================
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2 ;
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3 ; File altimeter.asm
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4 ;
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5 ; Altimeter function prototype.
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6 ;
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7 ; This program is free software: you can redistribute it and/or modify
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8 ; it under the terms of the GNU General Public License as published by
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9 ; the Free Software Foundation, either version 3 of the License, or
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10 ; (at your option) any later version.
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11 ;
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12 ; This program is distributed in the hope that it will be useful,
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13 ; but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 ; GNU General Public License for more details.
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16 ;
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17 ; You should have received a copy of the GNU General Public License
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18 ; along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 ;
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20 ; Copyright (c) 2010, JD Gascuel.
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21 ;=============================================================================
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22 ; HISTORY
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23 ; 2010-12-15 : [jDG] First prototype with quadratic polynomial ant tp°.
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24 ; 2010-12-28 : [jDG] Use MPLAB Math and C libraries for FP32 computations.
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25 ; 2011-01-02 : [jDG] Edit reference pressure by 0.25 mbar.
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26 ;
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27 ; Known bug: Simulator reset altitude and reference...
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28
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29 altimeter_calc:
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30 movlb HIGH(pressureAvg)
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31
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32 movlw HIGH(4*.900) ; Is presure ref bigger than 900mbar
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33 cpfsgt pressureRef+1
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34 bra altimeter_reset ; No: Should do a reset now.
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35
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36 movlw HIGH(4*.1100) ; Is ref pressure bigger than 1100mbar ?
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37 cpfsgt pressureRef+1
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38 bra altimeter_1 ; No: ok it is valid...
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39
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40 ; Reset computation. Eg. after a sleep, enables to faster restart with correct
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41 ; values...
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42 altimeter_reset:
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43 movlb HIGH(pressureAvg)
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44 movlw LOW(4*.1013+1) ; Init see level at 1013,25 mbar.
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45 movwf pressureRef+0
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46 movlw HIGH(4*.1013+1)
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47 movwf pressureRef+1
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48
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49 clrf pressureSum+0 ; Init averaging area
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50 clrf pressureSum+1
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51 clrf pressureCount
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52
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53 movff amb_pressure+0,pressureAvg+0 ; And init first average.
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54 movff amb_pressure+1,pressureAvg+1
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55
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56 movlw 4 ; And multiply AVG by 16 to be coherent.
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57 altimeter_reset_1:
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58 bcf STATUS,C
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59 rlcf pressureAvg+0
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60 rlcf pressureAvg+1
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61 decfsz WREG
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62 bra altimeter_reset_1
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64 rcall compute_altitude
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65
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66 movlb 1 ; Back to normal bank1.
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67 return
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68
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69 altimeter_1:
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70 ;---- Do a bank-safe 16bit summing -----------------------------------
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71 movff amb_pressure+0,WREG
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72 addwf pressureSum+0,F
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73 movff amb_pressure+1,WREG
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74 addwfc pressureSum+1,F
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75
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76 incf pressureCount ; Increment count too.
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77 movlw .32 ; Already 32 done ?
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78 subwf pressureCount,W
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79 bnz altimeter_4 ; NO: skip update.
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80
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81 ;---- Update altitude every 32 pressure measures --------------------
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82 bcf STATUS,C ; Divide by 2, to store pressure x16
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83 rrcf pressureSum+1
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84 rrcf pressureSum+0
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85
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86 movff pressureSum+0,pressureAvg+0
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87 movff pressureSum+1,pressureAvg+1
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88
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89 rcall compute_altitude ; Compute from the averaged value...
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90
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91 clrf pressureSum+0 ; And reset sum zone for next averaging.
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92 clrf pressureSum+1
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93 clrf pressureCount
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94
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95 altimeter_4:
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96 movlb 1 ; make sure to be in normal bank1
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97 return
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98
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99 ;---- Display result -------------------------------------------------
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100 altimeter_display:
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101 GETCUSTOM8 .49 ; Check CF#49
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102 btfss WREG,0 ; Enabled ?
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103 return ; NO: return
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104
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105 WIN_TOP .35 ; Custom view drawing zone...
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106 WIN_LEFT .90
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107 WIN_INVERT .0
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108 WIN_FONT .0
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109 call PLED_standard_color
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110
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111 STRCPY "Alt: "
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112
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113 movff altitude+0,lo ; BANK-SAFE read altitude
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114 movff altitude+1,hi
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115 btfss hi,7 ; Is altitude negativ ?
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116 bra altimeter_2 ; No: just print it
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117
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118 PUTC '-' ; Yes: print the minus sign
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119 comf hi ; And do a 16bit 2-complement.
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120 comf lo
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121 infsnz lo
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122 incf hi
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123
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124 altimeter_2:
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125 bsf leftbind
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126 output_16
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127 bcf leftbind
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128
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129 STRCAT_PRINT "m "
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130 return
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131
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132 ;=============================================================================
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133 ; Compute altitude, using the formula:
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134 ; H(P) = 18.787 log10(P0/P) (Log base 10)
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135
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136 ;---- Interface the the Mayh library -----------------------------------------
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137 extern __AARGB2 ; A float in fA2, fA1, fA0, fAExo
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138 extern __BARGB2 ; B float in fB2, fB1, fB0, fBExo
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139 extern FLO1632U ; convert uint16 fA+1 --> fp32 fA
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140 extern FPD32 ; fp32 divide fA/fB --> fA
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141 extern FPM32 ; fp32 multiply fA*fB --> fA
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142 extern INT3216 ; convert fp32 fA --> int16 fA+1
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143 #define fA __AARGB2
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144 #define fB __BARGB2
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145
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146 ;---- Interface to the C library ---------------------------------------------
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147 extern __AARGB3
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148 extern log10 ; float32 log(auto float32)
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149 #define fRet __AARGB3
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150
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151 compute_altitude:
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152 ; Setup C-code stack, to enable calling the log() function.
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153 lfsr FSR1, c_code_data_stack
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154 lfsr FSR2, c_code_data_stack
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155
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156 ; Convert pressure to float, --> fB
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157 movff pressureAvg+0, fA+1
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158 movff pressureAvg+1, fA+2
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159 call FLO1632U ; u16 fA[1:2] --> fp32 fA
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160 movff fA+0, fB+0
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161 movff fA+1, fB+1
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162 movff fA+2, fB+2
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163 movff fA+3, fB+3
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164
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165 ; Convert sea-level reference pressure to float, --> fB
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166 movff pressureRef+0, fA+1 ; Get sea level pressure.
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167 movff pressureRef+1, fA+2
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168 bcf STATUS,C ; Multiply by 4.
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169 rlcf fA+1
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170 rlcf fA+2
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171 bcf STATUS,C
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172 rlcf fA+1
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173 rlcf fA+2
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174 call FLO1632U ; to float: u16 fA[1:2] --> fp32 fA
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175
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176 ; Divide
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177 call FPD32 ; fp32 X/Y --> X
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178
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179 ; log10()
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180 movff fA+0, POSTINC1 ; Push X to stack
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181 movff fA+1, POSTINC1
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182 movff fA+2, POSTINC1
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183 movff fA+3, POSTINC1
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184 call log10 ; log(P0/P)
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185
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186 movf POSTDEC1,F,ACCESS ; pop argument
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187 movf POSTDEC1,F,ACCESS
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188 movf POSTDEC1,F,ACCESS
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189 movf POSTDEC1,F,ACCESS
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190
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191 ; Move log10(P0/P) to fB
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192 movff fRet+0,fB+0 ; move result to fB
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193 movff fRet+1,fB+1
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194 movff fRet+2,fB+2
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195 movff fRet+3,fB+3
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196
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197 ; Multiply by scaling factor for meters, and standatd atmosphere.
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198 movlw LOW(.18787)
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199 movff WREG, fA+1
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200 movlw HIGH(.18787)
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201 movff WREG, fA+2
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202 call FLO1632U ; u16 fA[1:2] --> fp32 fA
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203 call FPM32 ; altitute --> fp32 fA
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204
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205 ; Convert result to int16 --> altitude.
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206 call INT3216 ; fp32 fA --> int16 fA+1
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207 movff fA+1, altitude+0
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208 movff fA+2, altitude+1
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209
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210 return
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211
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212 ;=============================================================================
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diff changeset
213 ; Altimeter menu
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
214 ;
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
215 ; Edit reference (where altitude = 0) pressure, while displaying corresponding
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
216 ; altitude.
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
217 ;
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
218 altimeter_menu:
132
49bb155ddfbf Fix altimeter after simulator (zero divide -> 32767m)
JeanDo
parents: 125
diff changeset
219 movff pressureRef+0,WREG ; Make sure it is initialized...
49bb155ddfbf Fix altimeter after simulator (zero divide -> 32767m)
JeanDo
parents: 125
diff changeset
220 movff pressureRef+1,fA
49bb155ddfbf Fix altimeter after simulator (zero divide -> 32767m)
JeanDo
parents: 125
diff changeset
221 iorwf fA
49bb155ddfbf Fix altimeter after simulator (zero divide -> 32767m)
JeanDo
parents: 125
diff changeset
222 bnz altimeter_menu_1 ; Yes: skip reset...
49bb155ddfbf Fix altimeter after simulator (zero divide -> 32767m)
JeanDo
parents: 125
diff changeset
223 rcall altimeter_reset
49bb155ddfbf Fix altimeter after simulator (zero divide -> 32767m)
JeanDo
parents: 125
diff changeset
224
49bb155ddfbf Fix altimeter after simulator (zero divide -> 32767m)
JeanDo
parents: 125
diff changeset
225 altimeter_menu_1:
125
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
226 call PLED_ClearScreen ; Menu header.
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
227 call PLED_standard_color
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
228 call PLED_topline_box
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
229 WIN_INVERT .1 ; Init new Wordprocessor
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
230 WIN_FONT .0
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
231 WIN_LEFT .80-7*7
134
48f12271eb18 divingmode graphs
heinrichsweikamp
parents: 132
diff changeset
232 WIN_TOP .1
125
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
233 STRCPY_PRINT "Set Altimeter:"
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
234
170
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
235 movlw 2 ; Start menu on line 2.
125
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
236 movwf menupos
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
237
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
238 altimeter_menu_2:
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
239 WIN_FONT .0 ; Reset, because compute erase that...
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
240 WIN_INVERT .0
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
241 WIN_LEFT .20 ; First line:
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
242 WIN_TOP .35
166
80de93d72a17 Allow display of altitude <= 0m
JeanDo
parents: 162
diff changeset
243 STRCPY "Sea ref: "
125
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
244
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
245 movff pressureRef+0, lo
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
246 movff pressureRef+1, hi
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
247 bcf STATUS,C ; Divide ref pressure by 4
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
248 rrcf hi ; to get the integer part of it:
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
249 rrcf lo
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
250 bcf STATUS,C
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
251 rrcf hi
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
252 rrcf lo
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
253 bsf leftbind
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
254 output_16
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
255
170
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
256 ; PUTC '.'
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
257 ; movff pressureRef+0, hi ; Decimal part is constructed
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
258 ; clrf WREG ; from the 2 lower bits.
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
259 ; btfsc hi,0
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
260 ; addlw .25
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
261 ; btfsc hi,1
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
262 ; addlw .50
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
263 ; movwf lo
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
264 ; output_99x
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
265
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
266 STRCAT_PRINT " mbar "
125
2907b42c195b Altimeter:
JeanDo
parents:
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267
170
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
268 WIN_TOP .65 ; Action enable
125
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
269 STRCPY "Enabled: "
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
270 GETCUSTOM8 .49
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
271 btfss WREG,0
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
272 bra alt_menu_1
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
273 STRCAT_PRINT "ON "
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
274 bra alt_menu_2
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
275 alt_menu_1:
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
276 STRCAT_PRINT "OFF"
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
277 alt_menu_2:
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
278
170
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
279 WIN_TOP .95 ; Action reset
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
280 STRCPY_PRINT "Default: 1013 mbar"
125
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
281 WIN_TOP .125 ; Action add
170
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
282 STRCPY_PRINT "+1 mbar"
125
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
283 WIN_TOP .155 ; Action sub
170
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
284 STRCPY_PRINT "-1 mbar"
125
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
285 WIN_TOP .185 ; Action exit
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
286 STRCPY_PRINT "Exit"
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
287
170
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
288 WIN_LEFT .85 ; Bottom right.
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
289 STRCPY "Alt: "
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
290 movff altitude+0, lo
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
291 movff altitude+1, hi
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
292 btfss hi,7 ; Is altitude negativ ?
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
293 bra altimeter_menu_3 ; No: just print it
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
294
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
295 PUTC '-' ; Yes: print the minus sign
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
296 comf hi ; And do a 16bit 2-complement.
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
297 comf lo
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
298 infsnz lo
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
299 incf hi
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
300
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
301 altimeter_menu_3:
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
302 bsf leftbind
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
303 output_16
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
304 bcf leftbind
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
305 STRCAT_PRINT "m "
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
306
125
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
307 alt_menu_loop:
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
308 call PLED_menu_cursor ; Display cursor
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
309 bcf switch_left ; reset buttons state
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
310 bcf switch_right
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
311
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
312 alt_menu_loop1: ; Wait for button.
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
313 btfsc switch_right ; [[MENU]] button
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
314 bra alt_menu_next
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
315
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
316 btfsc switch_left ;[[ENTER]] button
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
317 bra alt_menu_do_it
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
318
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
319 btfsc divemode ; Diving stared ?
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
320 goto restart ; YES: quit this menu !
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
321
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
322 btfsc onesecupdate ; Check what should be every 1sec.
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
323 call timeout_surfmode
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
324
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
325 btfsc onesecupdate
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
326 call set_dive_modes
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
327
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
328 bcf onesecupdate ; end of 1sek. tasks
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
329
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
330 btfsc sleepmode ; Sleep mode entered ?
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
331 bra alt_menu_exit
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
332
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
333 bra alt_menu_loop1
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
334
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
335 ;---- Move to next line ------------------------------------------------------
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
336
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
337 alt_menu_next:
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
338 incf menupos ; next line.
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
339 movlw .7
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
340 cpfseq menupos ; Below last line ?
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
341 bra alt_menu_loop
170
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
342 movlw .2 ; Yes: back to line no 2.
125
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
343 movwf menupos
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
344 bra alt_menu_loop
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
345
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
346 ;----- Execute menu line -----------------------------------------------------
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
347
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
348 alt_menu_do_it:
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
349 movf menupos,W ; test line value
170
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
350 addlw -2
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
351 bz alt_menu_enable ; 2 --> reset
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
352 dcfsnz WREG
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
353 bra alt_menu_reset ; 3 --> +1
125
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
354 dcfsnz WREG
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
355 bra alt_menu_plus1 ; 4 --> +1
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
356 dcfsnz WREG
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
357 bra alt_menu_minus1 ; 5 --> -1
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
358 bra alt_menu_exit ; else --> exit
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
359
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
360 ;---- Toggle altimeter (CF#49) -----------------------------------------------
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
361 alt_menu_enable:
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
362 GETCUSTOM8 .49 ; Read CF#49
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
363 btg WREG,0 ; Toggle boolean value
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
364 movwf EEDATA
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
365 movlw d'1' ; Upper EEPROM Bank
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
366 movwf EEADRH
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
367 movlw 4*(.49-.32) + 0x82 ; CF#49 low byte address in EEPROM
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
368 movwf EEADR
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
369 call write_eeprom
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
370 bra altimeter_menu_2
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
371
170
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
372 ;---- Reset sea level pressure to reference ----------------------------------
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
373 alt_menu_reset:
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
374 rcall altimeter_reset
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
375 movlb 1 ; Go back to normal bank1
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
376 bra altimeter_menu_2
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
377
125
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
378 ;---- Increment sea level pressure -------------------------------------------
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
379 alt_menu_plus1:
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
380 movlb HIGH(pressureRef) ; Setup our own ram bank
170
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
381 movlw 4
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
382 addwf pressureRef+0,F ; 16bit inc.
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
383 movlw 0
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
384 addwfc pressureRef+1,F
125
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
385 bra alt_menu_recompute ; then recompute altitude.
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
386
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
387 ;---- Decrement sea level pressure -------------------------------------------
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
388 alt_menu_minus1:
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
389 movlb HIGH(pressureRef) ; Setup our own ram bank
170
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
390 movlw -4
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
391 addwf pressureRef+0,F ; 16bit decrement
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
392 movlw -1
0f7ca37b1412 Altimeter: auto reset
JeanDo
parents: 166
diff changeset
393 addwfc pressureRef+1,F
125
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
394
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
395 alt_menu_recompute:
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
396 rcall compute_altitude ; Recompute altitude
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
397 movlb 1 ; Go back to normal bank1
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
398 bra altimeter_menu_2
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
399
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
400 ;---- Exit altimeter menu ----------------------------------------------------
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
401 alt_menu_exit:
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
402 movlw .5 ; reset position to Altimeter line.
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
403 movwf menupos ;
2907b42c195b Altimeter:
JeanDo
parents:
diff changeset
404 goto more_menu2 ; in the More... menu.