Mercurial > public > hwos_code
annotate src/calibrate.asm @ 145:e3ac5b2021bc
NEW: Setpoint-Fallback option for external O2 sensor failure
| author | heinrichsweikamp |
|---|---|
| date | Tue, 05 Aug 2014 16:55:09 +0200 |
| parents | f3062a611eef |
| children | fdd4e30846ae |
| rev | line source |
|---|---|
| 113 | 1 ;============================================================================= |
| 2 ; | |
| 3 ; File calibration.asm | |
| 4 ; | |
| 5 ; o2 sensor calibration subroutines | |
| 6 ; | |
| 7 ; Copyright (c) 2014, Heinrichs Weikamp, all right reserved. | |
| 8 ;============================================================================= | |
| 9 | |
| 10 #include "ostc3.inc" | |
| 11 #include "shared_definitions.h" ; Mailbox between c and asm | |
| 12 #include "math.inc" | |
| 13 #include "adc_lightsensor.inc" | |
| 14 #include "eeprom_rs232.inc" | |
| 15 | |
| 16 calibrate CODE | |
| 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 return ; No HUD/Digital data |
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86 |
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87 ; Copy disbale 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 |
| 113 | 96 global calibrate_mix |
| 97 calibrate_mix: | |
| 98 ; calibrate S8 HUD | |
| 99 btfss s8_digital ; S8 Digital? | |
| 100 bra calibrate_mix2 ; No | |
| 101 | |
| 102 clrf temp1 ; Chksum | |
| 103 movlw 0xAA ; Start Byte | |
| 104 addwf temp1,F | |
| 105 movff WREG,TXREG2 | |
| 106 call rs232_wait_tx2 | |
| 107 | |
| 108 movlw 0x31 ; Calibrate | |
| 109 addwf temp1,F | |
| 110 movff WREG,TXREG2 | |
| 111 call rs232_wait_tx2 | |
| 112 | |
| 113 movff opt_calibration_O2_ratio,WREG ; Calibration gas %O2 | |
| 114 addwf temp1,F | |
| 115 movff WREG,TXREG2 | |
| 116 call rs232_wait_tx2 | |
| 117 | |
| 118 movff amb_pressure+0,WREG ; Ambient pressure | |
| 119 addwf temp1,F | |
| 120 movff WREG,TXREG2 | |
| 121 call rs232_wait_tx2 | |
| 122 movff amb_pressure+1,WREG | |
| 123 addwf temp1,F | |
| 124 movff WREG,TXREG2 | |
| 125 call rs232_wait_tx2 | |
| 126 | |
| 127 movff temp1,TXREG2 ; Chksum | |
| 128 call rs232_wait_tx2 | |
| 129 | |
| 130 calibrate_mix2: | |
| 131 movff opt_calibration_O2_ratio,WREG ; Calibration gas %O2 | |
| 132 mullw .100 | |
| 133 movff PRODL,xA+0 | |
| 134 movff PRODH,xA+1 | |
| 135 ; (%O2*100)*[ambient,mbar]/100 -> xC | |
| 136 movff amb_pressure+0,xB+0 | |
| 137 movff amb_pressure+1,xB+1 | |
| 138 call mult16x16 ;xA*xB=xC | |
| 139 movlw LOW .100 | |
| 140 movwf xB+0 | |
| 141 movlw HIGH .100 | |
| 142 movwf xB+1 | |
| 143 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder | |
| 144 movff o2_mv_sensor1+0,xB+0 | |
| 145 movff o2_mv_sensor1+1,xB+1 | |
| 146 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder | |
| 147 ; xC= ppO2/mV | |
| 148 movff xC+0,opt_x_s1+0 | |
| 149 movff xC+1,opt_x_s1+1 ; Factor for Sensor1 | |
| 150 | |
| 151 movff opt_calibration_O2_ratio,WREG ; Calibration gas %O2 | |
| 152 mullw .100 | |
| 153 movff PRODL,xA+0 | |
| 154 movff PRODH,xA+1 | |
| 155 ; (%O2*100)*[ambient,mbar]/100 -> xC | |
| 156 movff amb_pressure+0,xB+0 | |
| 157 movff amb_pressure+1,xB+1 | |
| 158 call mult16x16 ;xA*xB=xC | |
| 159 movlw LOW .100 | |
| 160 movwf xB+0 | |
| 161 movlw HIGH .100 | |
| 162 movwf xB+1 | |
| 163 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder | |
| 164 movff o2_mv_sensor2+0,xB+0 | |
| 165 movff o2_mv_sensor2+1,xB+1 | |
| 166 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder | |
| 167 ; xC= ppO2/mV | |
| 168 movff xC+0,opt_x_s2+0 | |
| 169 movff xC+1,opt_x_s2+1 ; Factor for Sensor2 | |
| 170 | |
| 171 movff opt_calibration_O2_ratio,WREG ; Calibration gas %O2 | |
| 172 mullw .100 | |
| 173 movff PRODL,xA+0 | |
| 174 movff PRODH,xA+1 | |
| 175 ; (%O2*100)*[ambient,mbar]/100 -> xC | |
| 176 movff amb_pressure+0,xB+0 | |
| 177 movff amb_pressure+1,xB+1 | |
| 178 call mult16x16 ;xA*xB=xC | |
| 179 movlw LOW .100 | |
| 180 movwf xB+0 | |
| 181 movlw HIGH .100 | |
| 182 movwf xB+1 | |
| 183 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder | |
| 184 movff o2_mv_sensor3+0,xB+0 | |
| 185 movff o2_mv_sensor3+1,xB+1 | |
| 186 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder | |
| 187 ; xC= ppO2/mV | |
| 188 movff xC+0,opt_x_s3+0 | |
| 189 movff xC+1,opt_x_s3+1 ; Factor for Sensor3 | |
| 190 | |
| 191 ; Result is in 100µV | |
| 192 movff o2_mv_sensor1+0, sub_a+0 | |
| 193 movff o2_mv_sensor1+1, sub_a+1 | |
| 194 movlw LOW min_mv | |
| 195 movwf sub_b+0 | |
| 196 movlw HIGH min_mv | |
| 197 movwf sub_b+1 | |
| 198 call sub16 ; sub_c = sub_a - sub_b | |
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199 bsf use_02_sensor1 ; Sensor active! |
| 113 | 200 btfsc neg_flag |
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201 bcf use_02_sensor1 |
| 113 | 202 |
| 203 ; Result is in 100µV | |
| 204 movff o2_mv_sensor2+0, sub_a+0 | |
| 205 movff o2_mv_sensor2+1, sub_a+1 | |
| 206 movlw LOW min_mv | |
| 207 movwf sub_b+0 | |
| 208 movlw HIGH min_mv | |
| 209 movwf sub_b+1 | |
| 210 call sub16 ; sub_c = sub_a - sub_b | |
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211 bsf use_02_sensor2 ; Sensor active! |
| 113 | 212 btfsc neg_flag |
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213 bcf use_02_sensor2 |
| 113 | 214 |
| 215 ; Result is in 100µV | |
| 216 movff o2_mv_sensor3+0, sub_a+0 | |
| 217 movff o2_mv_sensor3+1, sub_a+1 | |
| 218 movlw LOW min_mv | |
| 219 movwf sub_b+0 | |
| 220 movlw HIGH min_mv | |
| 221 movwf sub_b+1 | |
| 222 call sub16 ; sub_c = sub_a - sub_b | |
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223 bsf use_02_sensor3 ; Sensor active! |
| 113 | 224 btfsc neg_flag |
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225 bcf use_02_sensor3 |
| 113 | 226 |
| 227 ; When no sensor is found, enable all three to show error state | |
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228 btfsc use_02_sensor1 |
| 113 | 229 return |
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230 btfsc use_02_sensor2 |
| 113 | 231 return |
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232 btfsc use_02_sensor3 |
| 113 | 233 return |
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234 bsf use_02_sensor1 |
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235 bsf use_02_sensor2 |
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236 bsf use_02_sensor3 |
| 113 | 237 ; Clear factors |
| 238 banksel opt_x_s1+0 | |
| 239 clrf opt_x_s1+0 | |
| 240 clrf opt_x_s1+1 | |
| 241 clrf opt_x_s2+0 | |
| 242 clrf opt_x_s2+1 | |
| 243 clrf opt_x_s3+0 | |
| 244 clrf opt_x_s3+1 | |
| 245 banksel common | |
| 246 return | |
| 247 | |
| 248 compute_ppo2_analog: | |
| 249 call get_analog_inputs | |
| 250 bra compute_ppo2_common | |
| 251 | |
| 252 global compute_ppo2 ; compute mv_sensorX and ppo2_sensorX arrays | |
| 253 compute_ppo2: | |
| 254 btfss c3_hardware ; C3 hardware? | |
| 255 return ; No | |
| 256 | |
| 257 btfss s8_digital ; =1: Digital I/O | |
| 258 bra compute_ppo2_analog ; use analog | |
| 259 | |
| 260 ; use digital | |
| 261 btfss new_s8_data_available ; =1: New data frame recieved | |
| 262 return | |
| 263 call compute_mvolts_for_all_sensors | |
| 264 | |
| 265 compute_ppo2_common: | |
| 266 ; o2_mv_sensor1:2 * opt_x_s1:2 = o2_ppo2_sensor1/10000 | |
| 267 movff o2_mv_sensor1+0,xA+0 | |
| 268 movff o2_mv_sensor1+1,xA+1 | |
| 269 movff opt_x_s1+0,xB+0 | |
| 270 movff opt_x_s1+1,xB+1 | |
| 271 call mult16x16 ;xA:2*xB:2=xC:4 | |
| 272 movlw LOW .1000 | |
| 273 movwf xB+0 | |
| 274 movlw HIGH .1000 | |
| 275 movwf xB+1 | |
| 276 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder | |
| 277 movlw d'1' | |
| 278 addwf xC+0,F | |
| 279 movlw d'0' | |
| 280 addwfc xC+1,F | |
| 281 movff xC+0,o2_ppo2_sensor1+0 | |
| 282 movff xC+1,o2_ppo2_sensor1+1 ; result in 0.01bar | |
| 283 ; Set to zero if sensor is not active! | |
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284 btfss use_02_sensor1 |
| 113 | 285 clrf o2_ppo2_sensor1+0 |
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286 btfss use_02_sensor1 |
| 113 | 287 clrf o2_ppo2_sensor1+1 |
| 288 | |
| 289 ; o2_mv_sensor2:2 * opt_x_s1:2 = o2_ppo2_sensor2/10000 | |
| 290 movff o2_mv_sensor2+0,xA+0 | |
| 291 movff o2_mv_sensor2+1,xA+1 | |
| 292 movff opt_x_s2+0,xB+0 | |
| 293 movff opt_x_s2+1,xB+1 | |
| 294 call mult16x16 ;xA:2*xB:2=xC:4 | |
| 295 movlw LOW .1000 | |
| 296 movwf xB+0 | |
| 297 movlw HIGH .1000 | |
| 298 movwf xB+1 | |
| 299 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder | |
| 300 movlw d'1' | |
| 301 addwf xC+0,F | |
| 302 movlw d'0' | |
| 303 addwfc xC+1,F | |
| 304 movff xC+0,o2_ppo2_sensor2+0 | |
| 305 movff xC+1,o2_ppo2_sensor2+1 ; result in 0.01bar | |
| 306 ; Set to zero if sensor is not active! | |
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307 btfss use_02_sensor2 |
| 113 | 308 clrf o2_ppo2_sensor2+0 |
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309 btfss use_02_sensor2 |
| 113 | 310 clrf o2_ppo2_sensor2+1 |
| 311 | |
| 312 ; o2_mv_sensor3:2 * opt_x_s1:2 = o2_ppo2_sensor3/10000 | |
| 313 movff o2_mv_sensor3+0,xA+0 | |
| 314 movff o2_mv_sensor3+1,xA+1 | |
| 315 movff opt_x_s3+0,xB+0 | |
| 316 movff opt_x_s3+1,xB+1 | |
| 317 call mult16x16 ;xA:2*xB:2=xC:4 | |
| 318 movlw LOW .1000 | |
| 319 movwf xB+0 | |
| 320 movlw HIGH .1000 | |
| 321 movwf xB+1 | |
| 322 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder | |
| 323 movlw d'1' | |
| 324 addwf xC+0,F | |
| 325 movlw d'0' | |
| 326 addwfc xC+1,F | |
| 327 movff xC+0,o2_ppo2_sensor3+0 | |
| 328 movff xC+1,o2_ppo2_sensor3+1 ; result in 0.01bar | |
| 329 ; Set to zero if sensor is not active! | |
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330 btfss use_02_sensor3 |
| 113 | 331 clrf o2_ppo2_sensor3+0 |
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332 btfss use_02_sensor3 |
| 113 | 333 clrf o2_ppo2_sensor3+1 |
| 334 | |
| 335 return ; Done. | |
| 336 | |
| 337 | |
| 338 compute_mvolts_for_all_sensors: ; Compute mV or all sensors (S8 Mode) | |
| 339 ; compute AD results in 100µV steps (16bit/sensor) | |
| 340 ; 24bit AD result is in 244,1406541nV | |
| 341 ; Devide 24bit value through 409,5999512 -> 410 (0,01% error) | |
| 342 #DEFINE ad2mv_factor .410 | |
| 343 ; Sensor 1 | |
| 344 clrf xC+3 | |
| 345 movff ir_buffer+.6,xC+2 | |
| 346 movff ir_buffer+.5,xC+1 | |
| 347 movff ir_buffer+.4,xC+0 | |
| 348 movlw LOW ad2mv_factor | |
| 349 movwf xB+0 | |
| 350 movlw HIGH ad2mv_factor | |
| 351 movwf xB+1 | |
| 352 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder | |
| 353 movff xC+1,o2_mv_sensor1+1 | |
| 354 movff xC+0,o2_mv_sensor1+0 ; in 100uV steps | |
| 355 ; Sensor 2 | |
| 356 clrf xC+3 | |
| 357 movff ir_buffer+.9,xC+2 | |
| 358 movff ir_buffer+.8,xC+1 | |
| 359 movff ir_buffer+.7,xC+0 | |
| 360 movlw LOW ad2mv_factor | |
| 361 movwf xB+0 | |
| 362 movlw HIGH ad2mv_factor | |
| 363 movwf xB+1 | |
| 364 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder | |
| 365 movff xC+1,o2_mv_sensor2+1 | |
| 366 movff xC+0,o2_mv_sensor2+0 ; in 100uV steps | |
| 367 ; Sensor 3 | |
| 368 clrf xC+3 | |
| 369 movff ir_buffer+.12,xC+2 | |
| 370 movff ir_buffer+.11,xC+1 | |
| 371 movff ir_buffer+.10,xC+0 | |
| 372 movlw LOW ad2mv_factor | |
| 373 movwf xB+0 | |
| 374 movlw HIGH ad2mv_factor | |
| 375 movwf xB+1 | |
| 376 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder | |
| 377 movff xC+1,o2_mv_sensor3+1 | |
| 378 movff xC+0,o2_mv_sensor3+0 ; in 100uV steps | |
| 379 | |
| 380 bcf new_s8_data_available ; Clear flag | |
| 381 return ; Done. | |
| 382 | |
| 383 | |
| 384 | |
| 385 END |