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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 ; converts hex values to dez values
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19 ; written by: Matthias Heinrichs, info@heinrichsweikamp.com
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20 ; written: 13/10/07
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21 ; last updated: 5/11/07
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22 ; known bugs:
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23 ; ToDo: clean up!!!
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24
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25
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26 output_16_3 macro ; displays only last three figures from a 16Bit value (0-999)
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27 clrf ignore_digits
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28 incf ignore_digits,F
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29 clrf temp4
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30 bsf show_last3
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31 movf temp4,W ; Temp4 stores position for decimal point
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32 call output16
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33 endm
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34
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35 output_16dp macro temp4 ; 16Bit with decimal point
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36 movlw temp4 ; Temp4 stores position for decimal point
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37 call output16
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38 endm
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39
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40 output_16 macro ; 16Bit Normal
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41 clrf ignore_digits
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42 incf ignore_digits,F
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43 clrf temp4
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44 movf temp4,W ; Temp4 stores position for decimal point
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45 call output16
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46 endm
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47
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48 output_8 macro ; 8 Bit Normal
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49 clrf ignore_digits
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50 incf ignore_digits,F
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51 clrf temp4
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52 call output8
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53 endm
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54
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55 output_99 macro ; displays only last two figures from a 8Bit value (0-99)
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56 clrf ignore_digits
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57 incf ignore_digits,F
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58 clrf temp4
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59 call output99
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60 endm
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61
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62 output_99x macro ; displays only last two figures from a 8Bit value with leading zero (00-99)
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63 clrf ignore_digits
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64 incf ignore_digits,F
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65 clrf temp4
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66 call output99x
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67 endm
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68
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69 output99:
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70 movlw d'99'
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71 cpfslt lo
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72 movwf lo ; Limit to 99
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73 movff lo, lo_temp
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74 clrf hi_temp
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75 bcf pre_zero_flag ; do not display leading zeros
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76
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77 LCD_val99_2:
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78 movlw b'00001010' ; 10
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79 movwf temp2
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80 clrf temp3
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81 rcall DEC2ASCII
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82
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83 movlw b'00000001' ; 1
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84 movwf temp2
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85 clrf temp3
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86 bsf pre_zero_flag ; last figure, display zero (0)
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87 rcall DEC2ASCII
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88 RETURN
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89
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90 output99x:
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91 movff lo, lo_temp
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92 clrf hi_temp
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93 bsf pre_zero_flag ; display leading zeros
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94 bra LCD_val99_2
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95
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96 output8
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97 movff lo, lo_temp
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98 clrf hi_temp
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99 bcf pre_zero_flag ; do not display leading zeros
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100
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101 movlw b'01100100' ; 100
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102 movwf temp2
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103 clrf temp3
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104 rcall DEC2ASCII
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105 bra LCD_val99_2
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106
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107 output16
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108 bcf all_zeros_flag ; do not display any zero from here unless there was at least one figure /zero
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109
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110 movwf temp4
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111
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112 bsf leading_zeros
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113 incf temp4,1
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114 decfsz temp4,F
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115 bcf leading_zeros
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116
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117 bsf DP_done2
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118 incf temp4,1
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119 decfsz temp4,F
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120 bcf DP_done2 ; decimal point not yet set
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121
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122 movff lo, lo_temp
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123 movff hi, hi_temp
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124 bcf pre_zero_flag ; do not display leading zeros
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125
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126 movlw b'00010000' ; 10000s
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127 movwf temp2
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128 movlw b'00100111'
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129 movwf temp3
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130 btfss show_last3 ; display only last three figures?
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131 rcall DEC2ASCII
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132
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133 movlw b'11101000' ; 1000s
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134 movwf temp2
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135 movlw b'00000011'
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136 movwf temp3
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137 btfsc DP_done2 ; Is there a decimal point at all?
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138 bra output16_2 ; no, use normal display mode
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139
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140 btfsc all_zeros_flag ; display any zero from here
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141 bra output16_1 ; there was a figure /zero already
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142
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143 bsf pre_zero_flag ; display figure if zero?
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144 decfsz temp4,W
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145 bcf pre_zero_flag ; No
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146
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147 output16_1:
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148 btfsc DP_done ; Decimal point set already?
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149 bsf pre_zero_flag ; Yes, so display the rest
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150 output16_2:
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151 btfss show_last3 ; display only last three figures?
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152 rcall DEC2ASCII
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153 bcf show_last3 ; No, so display the rest
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154
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155 movlw b'01100100' ; 100s
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156 movwf temp2
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157 clrf temp3
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158
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159 btfsc ignore_digit3 ; Ignore 3rd-5th digit?
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160 bra output16_5 ; Yes, skip the rest
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161
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162 btfsc DP_done2 ; Is there a decimal point at all?
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163 bra output16_3 ; no, use normal display mode
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164
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165 btfsc all_zeros_flag ; display any zero from here
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166 bra output16_2_1 ; there was a figure /zero already
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167
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168 bsf pre_zero_flag ; display figure if zero?
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169 decfsz temp4,W
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170 bcf pre_zero_flag ; No
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171
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172 output16_2_1:
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173 btfsc DP_done ; Decimal point set already?
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174 bsf pre_zero_flag ; Yes, so display the rest
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175 btfsc DP_done2 ; Is there a decimal point at all?
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176 bsf pre_zero_flag ; No, so display the rest
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177 output16_3:
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178 rcall DEC2ASCII
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179
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180 movlw b'00001010' ; 10s
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181 movwf temp2
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182 clrf temp3
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183 btfsc DP_done2
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184 bra output16_4
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185
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186 btfsc all_zeros_flag ; display any zero from here
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187 bra output16_3_1 ; there was a figure /zero already
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188
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189 bsf pre_zero_flag
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190 decfsz temp4,W
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191 bcf pre_zero_flag
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192
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193 output16_3_1:
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194 btfsc DP_done
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195 bsf pre_zero_flag
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196 btfsc DP_done2
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197 bsf pre_zero_flag
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198 output16_4:
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199 btfsc ignore_digit4 ; Ignore 4-5th digit?
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200 bra output16_5 ; Yes, skip the rest
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201 rcall DEC2ASCII
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202
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203 movlw b'00000001' ; 1s
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204 movwf temp2
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205 clrf temp3
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206 bsf pre_zero_flag
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207 btfss ignore_digit5 ; Ignore 5th digit?
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208 rcall DEC2ASCII ; No!
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209 bcf ignore_digit5 ; yes, and clear flag
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210 output16_5:
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211 bcf ignore_digit3 ; Clear flag
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212 clrf ignore_digits
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213 incf ignore_digits,F
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214 bcf DP_done
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215 RETURN
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216
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217 DEC2ASCII clrf temp1 ; converts into ASCII code
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218 DEC2ASCII_2 movf temp3,W
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219 subwf hi_temp,0
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220 btfss STATUS,C
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221 bra DEC2ASCII_4
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222 bnz DEC2ASCII_3
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223
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224 movf temp2,W
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225 subwf lo_temp,0
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226 btfss STATUS,C
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227 bra DEC2ASCII_4
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228
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229 DEC2ASCII_3 movf temp3,W
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230 subwf hi_temp,1
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231 movf temp2,W
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232 subwf lo_temp,1
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233 btfss STATUS,C
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234 decf hi_temp,1
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235 incf temp1,1
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236 bsf pre_zero_flag
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237 bra DEC2ASCII_2
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238
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239 DEC2ASCII_4
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240 decfsz ignore_digits,F
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241 return
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242 incf ignore_digits,F
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243 movlw '0' ; Offset for Ascii-value
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244 addwf temp1,0
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245 btfsc pre_zero_flag ; is this a leading zero?
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246 bra DEC2ASCII_4_1 ; no
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247 btfsc leftbind
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248 bra DEC2ASCII_6
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249 movlw ' ' ; instead of leading zeros a space!
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250 bra DEC2ASCII_5
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251
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252 DEC2ASCII_4_1:
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253 bsf all_zeros_flag ; display any zero from here
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254 DEC2ASCII_5
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255 movwf POSTINC2
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256 DEC2ASCII_6
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257 decfsz temp4,F ; Set decimal point?
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258 RETURN ; No
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259 movlw "." ; Yes
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260 movwf POSTINC2
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261 bsf DP_done
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262 RETURN |
