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annotate src/calibrate.asm @ 260:e1cd6848863d

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increase immunity against false Qi data
author heinrichsweikamp
date Tue, 24 Mar 2015 19:48:17 +0100
parents e2ea74646127
children 29acdb601548
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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 and voting logic
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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_O2_sensor1 ;=1: Use this sensor for deco
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29 btfsc neg_flag
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30 bcf use_O2_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_O2_sensor2 ;=1: Use this sensor for deco
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40 btfsc neg_flag
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41 bcf use_O2_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_O2_sensor3 ;=1: Use this sensor for deco
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51 btfsc neg_flag
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52 bcf use_O2_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_O2_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_O2_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_O2_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_O2_sensor1
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90 btfss sensor2_active
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91 bcf use_O2_sensor2
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92 btfss sensor3_active
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93 bcf use_O2_sensor3
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94 bra check_sensor3 ; Check for voting logic
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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_O2_sensor1
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100 btfss sensor2_calibrated_ok
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101 bcf use_O2_sensor2
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102 btfss sensor3_calibrated_ok
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103 bcf use_O2_sensor3
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104 check_sensor3: ; Check for voting logic
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105 bsf voting_logic_sensor1
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106 movff o2_ppo2_sensor1,temp1
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107 rcall check_sensor_voting_common
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108 incfsz WREG ; Was Wreg=255?
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109 bcf voting_logic_sensor1 ; Yes, ignore this sensor
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110 bsf voting_logic_sensor2
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111 movff o2_ppo2_sensor2,temp1
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112 rcall check_sensor_voting_common
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113 incfsz WREG ; Was Wreg=255?
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114 bcf voting_logic_sensor2 ; Yes, ignore this sensor
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115 bsf voting_logic_sensor3
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116 movff o2_ppo2_sensor3,temp1
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117 rcall check_sensor_voting_common
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118 incfsz WREG ; Was Wreg=255?
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119 bcf voting_logic_sensor3 ; Yes, ignore this sensor
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120 return
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121
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122
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123 check_sensor_voting_common:
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124 movf temp1,W
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125 cpfsgt sensor_setpoint
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126 bra check_sensor_voting_common2 ; temp1<sensor_setpoint
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127 ; temp1>sensor_setpoint
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128 movf temp1,W
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129 subwf sensor_setpoint,W
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130 movwf temp1
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131 check_sensor_voting_common1:
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132 movlw sensor_voting_logic_threshold ; Threshold in 0.01bar
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133 cpfsgt temp1
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134 retlw .255 ; Within range
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135 retlw .0 ; Out of range
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136 check_sensor_voting_common2:
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137 ; temp1<sensor_setpoint
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138 movf sensor_setpoint,W
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139 subwf temp1,F
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140 bra check_sensor_voting_common1
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141
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142 global calibrate_mix
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143 calibrate_mix:
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144 ; calibrate S8 HUD
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145 btfss s8_digital ; S8 Digital?
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146 bra calibrate_mix2 ; No
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147
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148 ; Yes, calibrate any S8-connected HUD
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149 clrf temp1 ; Chksum
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150 movlw 0xAA ; Start Byte
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151 addwf temp1,F
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152 movff WREG,TXREG2
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153 call rs232_wait_tx2
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154
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155 movlw 0x31 ; Calibrate
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156 addwf temp1,F
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157 movff WREG,TXREG2
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158 call rs232_wait_tx2
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159
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160 movff opt_calibration_O2_ratio,WREG ; Calibration gas %O2
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161 addwf temp1,F
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162 movff WREG,TXREG2
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163 call rs232_wait_tx2
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164
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165 movff amb_pressure+0,WREG ; Ambient pressure
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166 addwf temp1,F
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167 movff WREG,TXREG2
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168 call rs232_wait_tx2
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169 movff amb_pressure+1,WREG
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170 addwf temp1,F
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171 movff WREG,TXREG2
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172 call rs232_wait_tx2
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173
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174 movff temp1,TXREG2 ; Chksum
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175 call rs232_wait_tx2
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176
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177 calibrate_mix2:
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178 movff opt_calibration_O2_ratio,WREG ; Calibration gas %O2
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179 mullw .100
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180 movff PRODL,xA+0
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181 movff PRODH,xA+1
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182 ; (%O2*100)*[ambient,mbar]/100 -> xC
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183 movff amb_pressure+0,xB+0
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184 movff amb_pressure+1,xB+1
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185 call mult16x16 ;xA*xB=xC
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186 movlw LOW .100
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diff changeset
187 movwf xB+0
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parents:
diff changeset
188 movlw HIGH .100
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parents:
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189 movwf xB+1
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parents:
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190 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder
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191 movff o2_mv_sensor1+0,xB+0
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parents:
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192 movff o2_mv_sensor1+1,xB+1
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parents:
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193 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder
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194 ; xC= ppO2/mV
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195 movff xC+0,opt_x_s1+0
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parents:
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196 movff xC+1,opt_x_s1+1 ; Factor for Sensor1
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197
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198 movff opt_calibration_O2_ratio,WREG ; Calibration gas %O2
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199 mullw .100
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200 movff PRODL,xA+0
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parents:
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201 movff PRODH,xA+1
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parents:
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202 ; (%O2*100)*[ambient,mbar]/100 -> xC
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parents:
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203 movff amb_pressure+0,xB+0
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parents:
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204 movff amb_pressure+1,xB+1
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parents:
diff changeset
205 call mult16x16 ;xA*xB=xC
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parents:
diff changeset
206 movlw LOW .100
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parents:
diff changeset
207 movwf xB+0
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parents:
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208 movlw HIGH .100
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parents:
diff changeset
209 movwf xB+1
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parents:
diff changeset
210 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder
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parents:
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211 movff o2_mv_sensor2+0,xB+0
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parents:
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212 movff o2_mv_sensor2+1,xB+1
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parents:
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213 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder
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214 ; xC= ppO2/mV
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parents:
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215 movff xC+0,opt_x_s2+0
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parents:
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216 movff xC+1,opt_x_s2+1 ; Factor for Sensor2
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217
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218 movff opt_calibration_O2_ratio,WREG ; Calibration gas %O2
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parents:
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219 mullw .100
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220 movff PRODL,xA+0
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221 movff PRODH,xA+1
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parents:
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222 ; (%O2*100)*[ambient,mbar]/100 -> xC
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parents:
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223 movff amb_pressure+0,xB+0
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parents:
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224 movff amb_pressure+1,xB+1
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parents:
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225 call mult16x16 ;xA*xB=xC
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parents:
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226 movlw LOW .100
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parents:
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227 movwf xB+0
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parents:
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228 movlw HIGH .100
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parents:
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229 movwf xB+1
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parents:
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230 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder
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231 movff o2_mv_sensor3+0,xB+0
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parents:
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232 movff o2_mv_sensor3+1,xB+1
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parents:
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233 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder
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234 ; xC= ppO2/mV
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parents:
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235 movff xC+0,opt_x_s3+0
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parents:
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236 movff xC+1,opt_x_s3+1 ; Factor for Sensor3
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237
189
e79bc535ef9e ignore un-calibrated sensors even if they become valid
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parents: 187
diff changeset
238 bsf sensor1_calibrated_ok
e79bc535ef9e ignore un-calibrated sensors even if they become valid
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parents: 187
diff changeset
239 bsf sensor2_calibrated_ok
e79bc535ef9e ignore un-calibrated sensors even if they become valid
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parents: 187
diff changeset
240 bsf sensor3_calibrated_ok ; Set flags prior check
e79bc535ef9e ignore un-calibrated sensors even if they become valid
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parents: 187
diff changeset
241 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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parents: 187
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242 ; initialise internal calibration flags
192
efe70488a04b voting logic for external monitoring
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parents: 190
diff changeset
243 btfss use_O2_sensor1 ; Sensor out of range?
189
e79bc535ef9e ignore un-calibrated sensors even if they become valid
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parents: 187
diff changeset
244 bcf sensor1_calibrated_ok ; Yes, disable this sensor
192
efe70488a04b voting logic for external monitoring
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parents: 190
diff changeset
245 btfss use_O2_sensor2 ; Sensor out of range?
189
e79bc535ef9e ignore un-calibrated sensors even if they become valid
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parents: 187
diff changeset
246 bcf sensor2_calibrated_ok ; Yes, disable this sensor
192
efe70488a04b voting logic for external monitoring
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parents: 190
diff changeset
247 btfss use_O2_sensor3 ; Sensor out of range?
189
e79bc535ef9e ignore un-calibrated sensors even if they become valid
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parents: 187
diff changeset
248 bcf sensor3_calibrated_ok ; Yes, disable this sensor
113
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249
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250 ; When no sensor is found, enable all three to show error state
192
efe70488a04b voting logic for external monitoring
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parents: 190
diff changeset
251 btfsc use_O2_sensor1
113
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252 return
192
efe70488a04b voting logic for external monitoring
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parents: 190
diff changeset
253 btfsc use_O2_sensor2
113
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parents:
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254 return
192
efe70488a04b voting logic for external monitoring
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parents: 190
diff changeset
255 btfsc use_O2_sensor3
113
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parents:
diff changeset
256 return
192
efe70488a04b voting logic for external monitoring
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parents: 190
diff changeset
257 bsf use_O2_sensor1
efe70488a04b voting logic for external monitoring
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parents: 190
diff changeset
258 bsf use_O2_sensor2
efe70488a04b voting logic for external monitoring
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parents: 190
diff changeset
259 bsf use_O2_sensor3
113
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260 ; Clear factors
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parents:
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261 banksel opt_x_s1+0
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parents:
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262 clrf opt_x_s1+0
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parents:
diff changeset
263 clrf opt_x_s1+1
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parents:
diff changeset
264 clrf opt_x_s2+0
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parents:
diff changeset
265 clrf opt_x_s2+1
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parents:
diff changeset
266 clrf opt_x_s3+0
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parents:
diff changeset
267 clrf opt_x_s3+1
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parents:
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268 banksel common
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269 return
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parents:
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270
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271 compute_ppo2_analog:
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272 call get_analog_inputs
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273 bra compute_ppo2_common
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274
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275 global compute_ppo2 ; compute mv_sensorX and ppo2_sensorX arrays
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276 compute_ppo2:
236
e2ea74646127 configure hardware_flag byte
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parents: 235
diff changeset
277 btfss analog_o2_input ; cR hardware?
113
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parents:
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278 return ; No
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parents:
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279
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280 btfss s8_digital ; =1: Digital I/O
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281 bra compute_ppo2_analog ; use analog
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282
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283 ; use digital
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284 btfss new_s8_data_available ; =1: New data frame recieved
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285 return
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parents:
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286 call compute_mvolts_for_all_sensors
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287
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288 compute_ppo2_common:
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289 ; o2_mv_sensor1:2 * opt_x_s1:2 = o2_ppo2_sensor1/10000
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parents:
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290 movff o2_mv_sensor1+0,xA+0
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parents:
diff changeset
291 movff o2_mv_sensor1+1,xA+1
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parents:
diff changeset
292 movff opt_x_s1+0,xB+0
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parents:
diff changeset
293 movff opt_x_s1+1,xB+1
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parents:
diff changeset
294 call mult16x16 ;xA:2*xB:2=xC:4
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parents:
diff changeset
295 movlw LOW .1000
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parents:
diff changeset
296 movwf xB+0
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parents:
diff changeset
297 movlw HIGH .1000
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parents:
diff changeset
298 movwf xB+1
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parents:
diff changeset
299 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder
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parents:
diff changeset
300 movlw d'1'
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parents:
diff changeset
301 addwf xC+0,F
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parents:
diff changeset
302 movlw d'0'
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parents:
diff changeset
303 addwfc xC+1,F
190
a0f9ec25852e limit sensor-read ppO2 to 2.55bar
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parents: 189
diff changeset
304 tstfsz xC+1 ; ppO2 is higher then 2.55bar?
a0f9ec25852e limit sensor-read ppO2 to 2.55bar
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parents: 189
diff changeset
305 setf xC+0 ; Yes.
a0f9ec25852e limit sensor-read ppO2 to 2.55bar
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parents: 189
diff changeset
306 movff xC+0,o2_ppo2_sensor1 ; result in 0.01bar
192
efe70488a04b voting logic for external monitoring
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parents: 190
diff changeset
307 ; ; Set to zero if sensor is not active!
efe70488a04b voting logic for external monitoring
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parents: 190
diff changeset
308 ; btfss use_O2_sensor1
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parents: 190
diff changeset
309 ; clrf o2_ppo2_sensor1
113
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310
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311 ; o2_mv_sensor2:2 * opt_x_s1:2 = o2_ppo2_sensor2/10000
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diff changeset
312 movff o2_mv_sensor2+0,xA+0
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parents:
diff changeset
313 movff o2_mv_sensor2+1,xA+1
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parents:
diff changeset
314 movff opt_x_s2+0,xB+0
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parents:
diff changeset
315 movff opt_x_s2+1,xB+1
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parents:
diff changeset
316 call mult16x16 ;xA:2*xB:2=xC:4
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parents:
diff changeset
317 movlw LOW .1000
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parents:
diff changeset
318 movwf xB+0
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parents:
diff changeset
319 movlw HIGH .1000
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parents:
diff changeset
320 movwf xB+1
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parents:
diff changeset
321 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder
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parents:
diff changeset
322 movlw d'1'
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parents:
diff changeset
323 addwf xC+0,F
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parents:
diff changeset
324 movlw d'0'
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parents:
diff changeset
325 addwfc xC+1,F
190
a0f9ec25852e limit sensor-read ppO2 to 2.55bar
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parents: 189
diff changeset
326 tstfsz xC+1 ; ppO2 is higher then 2.55bar?
a0f9ec25852e limit sensor-read ppO2 to 2.55bar
heinrichsweikamp
parents: 189
diff changeset
327 setf xC+0 ; Yes.
a0f9ec25852e limit sensor-read ppO2 to 2.55bar
heinrichsweikamp
parents: 189
diff changeset
328 movff xC+0,o2_ppo2_sensor2 ; result in 0.01bar
192
efe70488a04b voting logic for external monitoring
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parents: 190
diff changeset
329 ; ; Set to zero if sensor is not active!
efe70488a04b voting logic for external monitoring
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parents: 190
diff changeset
330 ; btfss use_O2_sensor2
efe70488a04b voting logic for external monitoring
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parents: 190
diff changeset
331 ; clrf o2_ppo2_sensor2
113
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parents:
diff changeset
332
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parents:
diff changeset
333 ; o2_mv_sensor3:2 * opt_x_s1:2 = o2_ppo2_sensor3/10000
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parents:
diff changeset
334 movff o2_mv_sensor3+0,xA+0
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parents:
diff changeset
335 movff o2_mv_sensor3+1,xA+1
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parents:
diff changeset
336 movff opt_x_s3+0,xB+0
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parents:
diff changeset
337 movff opt_x_s3+1,xB+1
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parents:
diff changeset
338 call mult16x16 ;xA:2*xB:2=xC:4
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parents:
diff changeset
339 movlw LOW .1000
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parents:
diff changeset
340 movwf xB+0
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parents:
diff changeset
341 movlw HIGH .1000
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parents:
diff changeset
342 movwf xB+1
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parents:
diff changeset
343 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder
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parents:
diff changeset
344 movlw d'1'
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parents:
diff changeset
345 addwf xC+0,F
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parents:
diff changeset
346 movlw d'0'
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parents:
diff changeset
347 addwfc xC+1,F
190
a0f9ec25852e limit sensor-read ppO2 to 2.55bar
heinrichsweikamp
parents: 189
diff changeset
348 tstfsz xC+1 ; ppO2 is higher then 2.55bar?
a0f9ec25852e limit sensor-read ppO2 to 2.55bar
heinrichsweikamp
parents: 189
diff changeset
349 setf xC+0 ; Yes.
a0f9ec25852e limit sensor-read ppO2 to 2.55bar
heinrichsweikamp
parents: 189
diff changeset
350 movff xC+0,o2_ppo2_sensor3 ; result in 0.01bar
192
efe70488a04b voting logic for external monitoring
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parents: 190
diff changeset
351 ; ; Set to zero if sensor is not active!
efe70488a04b voting logic for external monitoring
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parents: 190
diff changeset
352 ; btfss use_O2_sensor3
efe70488a04b voting logic for external monitoring
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parents: 190
diff changeset
353 ; clrf o2_ppo2_sensor3
113
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parents:
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354 return ; Done.
heinrichsweikamp
parents:
diff changeset
355
heinrichsweikamp
parents:
diff changeset
356
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parents:
diff changeset
357 compute_mvolts_for_all_sensors: ; Compute mV or all sensors (S8 Mode)
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parents:
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358 ; compute AD results in 100µV steps (16bit/sensor)
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parents:
diff changeset
359 ; 24bit AD result is in 244,1406541nV
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parents:
diff changeset
360 ; Devide 24bit value through 409,5999512 -> 410 (0,01% error)
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parents:
diff changeset
361 #DEFINE ad2mv_factor .410
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parents:
diff changeset
362 ; Sensor 1
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parents:
diff changeset
363 clrf xC+3
187
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 147
diff changeset
364 movff ir_s8_buffer+.6,xC+2
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 147
diff changeset
365 movff ir_s8_buffer+.5,xC+1
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 147
diff changeset
366 movff ir_s8_buffer+.4,xC+0
113
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parents:
diff changeset
367 movlw LOW ad2mv_factor
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parents:
diff changeset
368 movwf xB+0
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parents:
diff changeset
369 movlw HIGH ad2mv_factor
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parents:
diff changeset
370 movwf xB+1
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parents:
diff changeset
371 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder
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parents:
diff changeset
372 movff xC+1,o2_mv_sensor1+1
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parents:
diff changeset
373 movff xC+0,o2_mv_sensor1+0 ; in 100uV steps
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parents:
diff changeset
374 ; Sensor 2
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parents:
diff changeset
375 clrf xC+3
187
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 147
diff changeset
376 movff ir_s8_buffer+.9,xC+2
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 147
diff changeset
377 movff ir_s8_buffer+.8,xC+1
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 147
diff changeset
378 movff ir_s8_buffer+.7,xC+0
113
heinrichsweikamp
parents:
diff changeset
379 movlw LOW ad2mv_factor
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parents:
diff changeset
380 movwf xB+0
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parents:
diff changeset
381 movlw HIGH ad2mv_factor
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parents:
diff changeset
382 movwf xB+1
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parents:
diff changeset
383 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder
heinrichsweikamp
parents:
diff changeset
384 movff xC+1,o2_mv_sensor2+1
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parents:
diff changeset
385 movff xC+0,o2_mv_sensor2+0 ; in 100uV steps
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parents:
diff changeset
386 ; Sensor 3
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parents:
diff changeset
387 clrf xC+3
187
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 147
diff changeset
388 movff ir_s8_buffer+.12,xC+2
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 147
diff changeset
389 movff ir_s8_buffer+.11,xC+1
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 147
diff changeset
390 movff ir_s8_buffer+.10,xC+0
113
heinrichsweikamp
parents:
diff changeset
391 movlw LOW ad2mv_factor
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parents:
diff changeset
392 movwf xB+0
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parents:
diff changeset
393 movlw HIGH ad2mv_factor
heinrichsweikamp
parents:
diff changeset
394 movwf xB+1
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parents:
diff changeset
395 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder
heinrichsweikamp
parents:
diff changeset
396 movff xC+1,o2_mv_sensor3+1
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parents:
diff changeset
397 movff xC+0,o2_mv_sensor3+0 ; in 100uV steps
heinrichsweikamp
parents:
diff changeset
398
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parents:
diff changeset
399 bcf new_s8_data_available ; Clear flag
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parents:
diff changeset
400 return ; Done.
heinrichsweikamp
parents:
diff changeset
401
heinrichsweikamp
parents:
diff changeset
402
heinrichsweikamp
parents:
diff changeset
403
heinrichsweikamp
parents:
diff changeset
404 END