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annotate src/calibrate.asm @ 191:d049511b25c6

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minor
author heinrichsweikamp
date Thu, 30 Oct 2014 17:45:50 +0100
parents a0f9ec25852e
children efe70488a04b
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1 ;=============================================================================
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2 ;
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3 ; File calibration.asm
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4 ;
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5 ; o2 sensor calibration subroutines
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6 ;
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7 ; Copyright (c) 2014, Heinrichs Weikamp, all right reserved.
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8 ;=============================================================================
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9
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10 #include "ostc3.inc"
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11 #include "shared_definitions.h" ; Mailbox between c and asm
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12 #include "math.inc"
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13 #include "adc_lightsensor.inc"
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14 #include "eeprom_rs232.inc"
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15
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16 calibrate CODE
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17
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18 global check_sensors ; Check O2 sensor thresholds for fallback
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19 check_sensors:
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20 ; Check min_mv
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21 movff o2_mv_sensor1+0, sub_a+0
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22 movff o2_mv_sensor1+1, sub_a+1
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23 movlw LOW min_mv
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24 movwf sub_b+0
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25 movlw HIGH min_mv
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26 movwf sub_b+1
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27 call sub16 ; sub_c = sub_a - sub_b
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28 bsf use_02_sensor1 ;=1: Use this sensor for deco
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29 btfsc neg_flag
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30 bcf use_02_sensor1 ;=1: Use this sensor for deco
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31
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32 movff o2_mv_sensor2+0, sub_a+0
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33 movff o2_mv_sensor2+1, sub_a+1
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34 movlw LOW min_mv
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35 movwf sub_b+0
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36 movlw HIGH min_mv
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37 movwf sub_b+1
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38 call sub16 ; sub_c = sub_a - sub_b
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39 bsf use_02_sensor2 ;=1: Use this sensor for deco
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40 btfsc neg_flag
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41 bcf use_02_sensor2 ;=1: Use this sensor for deco
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42
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43 movff o2_mv_sensor3+0, sub_a+0
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44 movff o2_mv_sensor3+1, sub_a+1
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45 movlw LOW min_mv
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46 movwf sub_b+0
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47 movlw HIGH min_mv
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48 movwf sub_b+1
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49 call sub16 ; sub_c = sub_a - sub_b
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50 bsf use_02_sensor3 ;=1: Use this sensor for deco
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51 btfsc neg_flag
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52 bcf use_02_sensor3 ;=1: Use this sensor for deco
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53 ; Check max_mv
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54 movff o2_mv_sensor1+0, sub_a+0
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55 movff o2_mv_sensor1+1, sub_a+1
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56 movlw LOW max_mv
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57 movwf sub_b+0
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58 movlw HIGH max_mv
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59 movwf sub_b+1
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60 call sub16 ; sub_c = sub_a - sub_b
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61 btfss neg_flag
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62 bcf use_02_sensor1 ;=1: Use this sensor for deco
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63
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64 movff o2_mv_sensor2+0, sub_a+0
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65 movff o2_mv_sensor2+1, sub_a+1
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66 movlw LOW max_mv
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67 movwf sub_b+0
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68 movlw HIGH max_mv
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69 movwf sub_b+1
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70 call sub16 ; sub_c = sub_a - sub_b
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71 btfss neg_flag
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72 bcf use_02_sensor2 ;=1: Use this sensor for deco
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73
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74 movff o2_mv_sensor3+0, sub_a+0
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75 movff o2_mv_sensor3+1, sub_a+1
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76 movlw LOW max_mv
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77 movwf sub_b+0
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78 movlw HIGH max_mv
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79 movwf sub_b+1
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80 call sub16 ; sub_c = sub_a - sub_b
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81 btfss neg_flag
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82 bcf use_02_sensor3 ;=1: Use this sensor for deco
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83
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84 btfss hud_connection_ok ;=1: HUD connection ok
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85 bra check_sensor2 ; No HUD/Digital data
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86
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fdd4e30846ae some cleanup
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87 ; Copy disable flags from digital input
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88 btfss sensor1_active
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89 bcf use_02_sensor1
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90 btfss sensor2_active
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91 bcf use_02_sensor2
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92 btfss sensor3_active
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93 bcf use_02_sensor3
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94 return
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95
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96 check_sensor2:
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97 ; Copy disable flags from internal calibration routine
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98 btfss sensor1_calibrated_ok
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99 bcf use_02_sensor1
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100 btfss sensor2_calibrated_ok
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101 bcf use_02_sensor2
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102 btfss sensor3_calibrated_ok
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103 bcf use_02_sensor3
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104 return
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105
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106 global calibrate_mix
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107 calibrate_mix:
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108 ; calibrate S8 HUD
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109 btfss s8_digital ; S8 Digital?
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110 bra calibrate_mix2 ; No
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111
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112 ; Yes, calibrate any S8-connected HUD
113
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113 clrf temp1 ; Chksum
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114 movlw 0xAA ; Start Byte
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115 addwf temp1,F
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116 movff WREG,TXREG2
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117 call rs232_wait_tx2
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118
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119 movlw 0x31 ; Calibrate
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120 addwf temp1,F
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121 movff WREG,TXREG2
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122 call rs232_wait_tx2
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123
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124 movff opt_calibration_O2_ratio,WREG ; Calibration gas %O2
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125 addwf temp1,F
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126 movff WREG,TXREG2
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127 call rs232_wait_tx2
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128
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129 movff amb_pressure+0,WREG ; Ambient pressure
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130 addwf temp1,F
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131 movff WREG,TXREG2
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132 call rs232_wait_tx2
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133 movff amb_pressure+1,WREG
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134 addwf temp1,F
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135 movff WREG,TXREG2
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136 call rs232_wait_tx2
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137
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138 movff temp1,TXREG2 ; Chksum
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139 call rs232_wait_tx2
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140
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141 calibrate_mix2:
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142 movff opt_calibration_O2_ratio,WREG ; Calibration gas %O2
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143 mullw .100
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144 movff PRODL,xA+0
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145 movff PRODH,xA+1
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146 ; (%O2*100)*[ambient,mbar]/100 -> xC
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147 movff amb_pressure+0,xB+0
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148 movff amb_pressure+1,xB+1
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149 call mult16x16 ;xA*xB=xC
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150 movlw LOW .100
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151 movwf xB+0
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152 movlw HIGH .100
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153 movwf xB+1
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154 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder
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155 movff o2_mv_sensor1+0,xB+0
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156 movff o2_mv_sensor1+1,xB+1
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157 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder
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158 ; xC= ppO2/mV
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159 movff xC+0,opt_x_s1+0
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160 movff xC+1,opt_x_s1+1 ; Factor for Sensor1
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161
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162 movff opt_calibration_O2_ratio,WREG ; Calibration gas %O2
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163 mullw .100
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164 movff PRODL,xA+0
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165 movff PRODH,xA+1
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166 ; (%O2*100)*[ambient,mbar]/100 -> xC
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167 movff amb_pressure+0,xB+0
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168 movff amb_pressure+1,xB+1
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169 call mult16x16 ;xA*xB=xC
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170 movlw LOW .100
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171 movwf xB+0
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172 movlw HIGH .100
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173 movwf xB+1
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174 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder
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175 movff o2_mv_sensor2+0,xB+0
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176 movff o2_mv_sensor2+1,xB+1
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177 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder
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178 ; xC= ppO2/mV
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179 movff xC+0,opt_x_s2+0
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180 movff xC+1,opt_x_s2+1 ; Factor for Sensor2
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181
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182 movff opt_calibration_O2_ratio,WREG ; Calibration gas %O2
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183 mullw .100
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184 movff PRODL,xA+0
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185 movff PRODH,xA+1
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186 ; (%O2*100)*[ambient,mbar]/100 -> xC
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187 movff amb_pressure+0,xB+0
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188 movff amb_pressure+1,xB+1
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189 call mult16x16 ;xA*xB=xC
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190 movlw LOW .100
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191 movwf xB+0
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192 movlw HIGH .100
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193 movwf xB+1
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194 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder
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195 movff o2_mv_sensor3+0,xB+0
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196 movff o2_mv_sensor3+1,xB+1
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197 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder
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198 ; xC= ppO2/mV
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199 movff xC+0,opt_x_s3+0
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200 movff xC+1,opt_x_s3+1 ; Factor for Sensor3
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201
189
e79bc535ef9e ignore un-calibrated sensors even if they become valid
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parents: 187
diff changeset
202 bsf sensor1_calibrated_ok
e79bc535ef9e ignore un-calibrated sensors even if they become valid
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parents: 187
diff changeset
203 bsf sensor2_calibrated_ok
e79bc535ef9e ignore un-calibrated sensors even if they become valid
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parents: 187
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204 bsf sensor3_calibrated_ok ; Set flags prior check
e79bc535ef9e ignore un-calibrated sensors even if they become valid
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205 rcall check_sensors ; Check O2 sensor thresholds min_mv and max_mv and set use_02_sensorX flags
e79bc535ef9e ignore un-calibrated sensors even if they become valid
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206 ; initialise internal calibration flags
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parents: 187
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207 btfss use_02_sensor1 ; Sensor out of range?
e79bc535ef9e ignore un-calibrated sensors even if they become valid
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parents: 187
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208 bcf sensor1_calibrated_ok ; Yes, disable this sensor
e79bc535ef9e ignore un-calibrated sensors even if they become valid
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parents: 187
diff changeset
209 btfss use_02_sensor2 ; Sensor out of range?
e79bc535ef9e ignore un-calibrated sensors even if they become valid
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parents: 187
diff changeset
210 bcf sensor2_calibrated_ok ; Yes, disable this sensor
e79bc535ef9e ignore un-calibrated sensors even if they become valid
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parents: 187
diff changeset
211 btfss use_02_sensor3 ; Sensor out of range?
e79bc535ef9e ignore un-calibrated sensors even if they become valid
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parents: 187
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212 bcf sensor3_calibrated_ok ; Yes, disable this sensor
113
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213
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214 ; When no sensor is found, enable all three to show error state
145
e3ac5b2021bc NEW: Setpoint-Fallback option for external O2 sensor failure
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215 btfsc use_02_sensor1
113
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216 return
145
e3ac5b2021bc NEW: Setpoint-Fallback option for external O2 sensor failure
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parents: 113
diff changeset
217 btfsc use_02_sensor2
113
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218 return
145
e3ac5b2021bc NEW: Setpoint-Fallback option for external O2 sensor failure
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parents: 113
diff changeset
219 btfsc use_02_sensor3
113
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220 return
145
e3ac5b2021bc NEW: Setpoint-Fallback option for external O2 sensor failure
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parents: 113
diff changeset
221 bsf use_02_sensor1
e3ac5b2021bc NEW: Setpoint-Fallback option for external O2 sensor failure
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parents: 113
diff changeset
222 bsf use_02_sensor2
e3ac5b2021bc NEW: Setpoint-Fallback option for external O2 sensor failure
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parents: 113
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223 bsf use_02_sensor3
113
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224 ; Clear factors
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225 banksel opt_x_s1+0
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226 clrf opt_x_s1+0
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227 clrf opt_x_s1+1
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228 clrf opt_x_s2+0
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229 clrf opt_x_s2+1
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parents:
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230 clrf opt_x_s3+0
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231 clrf opt_x_s3+1
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232 banksel common
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233 return
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234
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235 compute_ppo2_analog:
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236 call get_analog_inputs
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237 bra compute_ppo2_common
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238
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239 global compute_ppo2 ; compute mv_sensorX and ppo2_sensorX arrays
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240 compute_ppo2:
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241 btfss c3_hardware ; C3 hardware?
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242 return ; No
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243
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244 btfss s8_digital ; =1: Digital I/O
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245 bra compute_ppo2_analog ; use analog
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246
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247 ; use digital
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248 btfss new_s8_data_available ; =1: New data frame recieved
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249 return
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250 call compute_mvolts_for_all_sensors
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251
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252 compute_ppo2_common:
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253 ; o2_mv_sensor1:2 * opt_x_s1:2 = o2_ppo2_sensor1/10000
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254 movff o2_mv_sensor1+0,xA+0
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255 movff o2_mv_sensor1+1,xA+1
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256 movff opt_x_s1+0,xB+0
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257 movff opt_x_s1+1,xB+1
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258 call mult16x16 ;xA:2*xB:2=xC:4
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259 movlw LOW .1000
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260 movwf xB+0
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261 movlw HIGH .1000
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262 movwf xB+1
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263 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder
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264 movlw d'1'
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265 addwf xC+0,F
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parents:
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266 movlw d'0'
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267 addwfc xC+1,F
190
a0f9ec25852e limit sensor-read ppO2 to 2.55bar
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parents: 189
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268 tstfsz xC+1 ; ppO2 is higher then 2.55bar?
a0f9ec25852e limit sensor-read ppO2 to 2.55bar
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parents: 189
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269 setf xC+0 ; Yes.
a0f9ec25852e limit sensor-read ppO2 to 2.55bar
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parents: 189
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270 movff xC+0,o2_ppo2_sensor1 ; result in 0.01bar
a0f9ec25852e limit sensor-read ppO2 to 2.55bar
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parents: 189
diff changeset
271 ; Set to zero if sensor is not active!
145
e3ac5b2021bc NEW: Setpoint-Fallback option for external O2 sensor failure
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diff changeset
272 btfss use_02_sensor1
190
a0f9ec25852e limit sensor-read ppO2 to 2.55bar
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273 clrf o2_ppo2_sensor1
113
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274
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275 ; o2_mv_sensor2:2 * opt_x_s1:2 = o2_ppo2_sensor2/10000
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276 movff o2_mv_sensor2+0,xA+0
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277 movff o2_mv_sensor2+1,xA+1
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parents:
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278 movff opt_x_s2+0,xB+0
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279 movff opt_x_s2+1,xB+1
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280 call mult16x16 ;xA:2*xB:2=xC:4
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281 movlw LOW .1000
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parents:
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282 movwf xB+0
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parents:
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283 movlw HIGH .1000
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parents:
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284 movwf xB+1
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parents:
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285 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder
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286 movlw d'1'
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287 addwf xC+0,F
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parents:
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288 movlw d'0'
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parents:
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289 addwfc xC+1,F
190
a0f9ec25852e limit sensor-read ppO2 to 2.55bar
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parents: 189
diff changeset
290 tstfsz xC+1 ; ppO2 is higher then 2.55bar?
a0f9ec25852e limit sensor-read ppO2 to 2.55bar
heinrichsweikamp
parents: 189
diff changeset
291 setf xC+0 ; Yes.
a0f9ec25852e limit sensor-read ppO2 to 2.55bar
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parents: 189
diff changeset
292 movff xC+0,o2_ppo2_sensor2 ; result in 0.01bar
113
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293 ; Set to zero if sensor is not active!
145
e3ac5b2021bc NEW: Setpoint-Fallback option for external O2 sensor failure
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parents: 113
diff changeset
294 btfss use_02_sensor2
190
a0f9ec25852e limit sensor-read ppO2 to 2.55bar
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parents: 189
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295 clrf o2_ppo2_sensor2
113
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296
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297 ; o2_mv_sensor3:2 * opt_x_s1:2 = o2_ppo2_sensor3/10000
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298 movff o2_mv_sensor3+0,xA+0
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parents:
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299 movff o2_mv_sensor3+1,xA+1
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parents:
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300 movff opt_x_s3+0,xB+0
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parents:
diff changeset
301 movff opt_x_s3+1,xB+1
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parents:
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302 call mult16x16 ;xA:2*xB:2=xC:4
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parents:
diff changeset
303 movlw LOW .1000
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parents:
diff changeset
304 movwf xB+0
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parents:
diff changeset
305 movlw HIGH .1000
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parents:
diff changeset
306 movwf xB+1
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parents:
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307 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder
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parents:
diff changeset
308 movlw d'1'
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parents:
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309 addwf xC+0,F
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parents:
diff changeset
310 movlw d'0'
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parents:
diff changeset
311 addwfc xC+1,F
190
a0f9ec25852e limit sensor-read ppO2 to 2.55bar
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parents: 189
diff changeset
312 tstfsz xC+1 ; ppO2 is higher then 2.55bar?
a0f9ec25852e limit sensor-read ppO2 to 2.55bar
heinrichsweikamp
parents: 189
diff changeset
313 setf xC+0 ; Yes.
a0f9ec25852e limit sensor-read ppO2 to 2.55bar
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parents: 189
diff changeset
314 movff xC+0,o2_ppo2_sensor3 ; result in 0.01bar
113
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parents:
diff changeset
315 ; Set to zero if sensor is not active!
145
e3ac5b2021bc NEW: Setpoint-Fallback option for external O2 sensor failure
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parents: 113
diff changeset
316 btfss use_02_sensor3
190
a0f9ec25852e limit sensor-read ppO2 to 2.55bar
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parents: 189
diff changeset
317 clrf o2_ppo2_sensor3
113
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parents:
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318 return ; Done.
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parents:
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319
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parents:
diff changeset
320
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321 compute_mvolts_for_all_sensors: ; Compute mV or all sensors (S8 Mode)
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322 ; compute AD results in 100µV steps (16bit/sensor)
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323 ; 24bit AD result is in 244,1406541nV
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parents:
diff changeset
324 ; Devide 24bit value through 409,5999512 -> 410 (0,01% error)
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325 #DEFINE ad2mv_factor .410
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diff changeset
326 ; Sensor 1
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parents:
diff changeset
327 clrf xC+3
187
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 147
diff changeset
328 movff ir_s8_buffer+.6,xC+2
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
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parents: 147
diff changeset
329 movff ir_s8_buffer+.5,xC+1
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
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parents: 147
diff changeset
330 movff ir_s8_buffer+.4,xC+0
113
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parents:
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331 movlw LOW ad2mv_factor
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parents:
diff changeset
332 movwf xB+0
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parents:
diff changeset
333 movlw HIGH ad2mv_factor
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parents:
diff changeset
334 movwf xB+1
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parents:
diff changeset
335 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder
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parents:
diff changeset
336 movff xC+1,o2_mv_sensor1+1
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parents:
diff changeset
337 movff xC+0,o2_mv_sensor1+0 ; in 100uV steps
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parents:
diff changeset
338 ; Sensor 2
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parents:
diff changeset
339 clrf xC+3
187
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
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parents: 147
diff changeset
340 movff ir_s8_buffer+.9,xC+2
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 147
diff changeset
341 movff ir_s8_buffer+.8,xC+1
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 147
diff changeset
342 movff ir_s8_buffer+.7,xC+0
113
heinrichsweikamp
parents:
diff changeset
343 movlw LOW ad2mv_factor
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parents:
diff changeset
344 movwf xB+0
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parents:
diff changeset
345 movlw HIGH ad2mv_factor
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parents:
diff changeset
346 movwf xB+1
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parents:
diff changeset
347 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder
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parents:
diff changeset
348 movff xC+1,o2_mv_sensor2+1
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parents:
diff changeset
349 movff xC+0,o2_mv_sensor2+0 ; in 100uV steps
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parents:
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350 ; Sensor 3
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parents:
diff changeset
351 clrf xC+3
187
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 147
diff changeset
352 movff ir_s8_buffer+.12,xC+2
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 147
diff changeset
353 movff ir_s8_buffer+.11,xC+1
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 147
diff changeset
354 movff ir_s8_buffer+.10,xC+0
113
heinrichsweikamp
parents:
diff changeset
355 movlw LOW ad2mv_factor
heinrichsweikamp
parents:
diff changeset
356 movwf xB+0
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parents:
diff changeset
357 movlw HIGH ad2mv_factor
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parents:
diff changeset
358 movwf xB+1
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parents:
diff changeset
359 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder
heinrichsweikamp
parents:
diff changeset
360 movff xC+1,o2_mv_sensor3+1
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parents:
diff changeset
361 movff xC+0,o2_mv_sensor3+0 ; in 100uV steps
heinrichsweikamp
parents:
diff changeset
362
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parents:
diff changeset
363 bcf new_s8_data_available ; Clear flag
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parents:
diff changeset
364 return ; Done.
heinrichsweikamp
parents:
diff changeset
365
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parents:
diff changeset
366
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parents:
diff changeset
367
heinrichsweikamp
parents:
diff changeset
368 END