Mercurial > public > hwos_code
annotate src/calibrate.asm @ 234:57155164faad
Show OSTC2-like active gas boxes in surface mode
author | heinrichsweikamp |
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date | Wed, 25 Feb 2015 13:57:30 +0100 |
parents | 03946aa48fa5 |
children | 23311219dacc |
rev | line source |
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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 | |
192 | 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 |
192 | 28 bsf use_O2_sensor1 ;=1: Use this sensor for deco |
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29 btfsc neg_flag |
192 | 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 |
192 | 39 bsf use_O2_sensor2 ;=1: Use this sensor for deco |
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40 btfsc neg_flag |
192 | 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 |
192 | 50 bsf use_O2_sensor3 ;=1: Use this sensor for deco |
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51 btfsc neg_flag |
192 | 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 |
192 | 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 |
192 | 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 |
192 | 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 |
147 | 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 |
192 | 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 |
192 | 99 bcf use_O2_sensor1 |
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100 btfss sensor2_calibrated_ok |
192 | 101 bcf use_O2_sensor2 |
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102 btfss sensor3_calibrated_ok |
192 | 103 bcf use_O2_sensor3 |
104 check_sensor3: ; Check for voting logic | |
105 bsf voting_logic_sensor1 | |
106 movff o2_ppo2_sensor1,temp1 | |
107 rcall check_sensor_voting_common | |
108 incfsz WREG ; Was Wreg=255? | |
109 bcf voting_logic_sensor1 ; Yes, ignore this sensor | |
110 bsf voting_logic_sensor2 | |
111 movff o2_ppo2_sensor2,temp1 | |
112 rcall check_sensor_voting_common | |
113 incfsz WREG ; Was Wreg=255? | |
114 bcf voting_logic_sensor2 ; Yes, ignore this sensor | |
115 bsf voting_logic_sensor3 | |
116 movff o2_ppo2_sensor3,temp1 | |
117 rcall check_sensor_voting_common | |
118 incfsz WREG ; Was Wreg=255? | |
119 bcf voting_logic_sensor3 ; Yes, ignore this sensor | |
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120 return |
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121 |
192 | 122 |
123 check_sensor_voting_common: | |
124 movf temp1,W | |
125 cpfsgt sensor_setpoint | |
126 bra check_sensor_voting_common2 ; temp1<sensor_setpoint | |
127 ; temp1>sensor_setpoint | |
128 movf temp1,W | |
129 subwf sensor_setpoint,W | |
130 movwf temp1 | |
131 check_sensor_voting_common1: | |
132 movlw sensor_voting_logic_threshold ; Threshold in 0.01bar | |
133 cpfsgt temp1 | |
134 retlw .255 ; Within range | |
135 retlw .0 ; Out of range | |
136 check_sensor_voting_common2: | |
137 ; temp1<sensor_setpoint | |
138 movf sensor_setpoint,W | |
139 subwf temp1,F | |
140 bra check_sensor_voting_common1 | |
141 | |
113 | 142 global calibrate_mix |
143 calibrate_mix: | |
144 ; calibrate S8 HUD | |
145 btfss s8_digital ; S8 Digital? | |
146 bra calibrate_mix2 ; No | |
147 | |
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148 ; Yes, calibrate any S8-connected HUD |
113 | 149 clrf temp1 ; Chksum |
150 movlw 0xAA ; Start Byte | |
151 addwf temp1,F | |
152 movff WREG,TXREG2 | |
153 call rs232_wait_tx2 | |
154 | |
155 movlw 0x31 ; Calibrate | |
156 addwf temp1,F | |
157 movff WREG,TXREG2 | |
158 call rs232_wait_tx2 | |
159 | |
160 movff opt_calibration_O2_ratio,WREG ; Calibration gas %O2 | |
161 addwf temp1,F | |
162 movff WREG,TXREG2 | |
163 call rs232_wait_tx2 | |
164 | |
165 movff amb_pressure+0,WREG ; Ambient pressure | |
166 addwf temp1,F | |
167 movff WREG,TXREG2 | |
168 call rs232_wait_tx2 | |
169 movff amb_pressure+1,WREG | |
170 addwf temp1,F | |
171 movff WREG,TXREG2 | |
172 call rs232_wait_tx2 | |
173 | |
174 movff temp1,TXREG2 ; Chksum | |
175 call rs232_wait_tx2 | |
176 | |
177 calibrate_mix2: | |
178 movff opt_calibration_O2_ratio,WREG ; Calibration gas %O2 | |
179 mullw .100 | |
180 movff PRODL,xA+0 | |
181 movff PRODH,xA+1 | |
182 ; (%O2*100)*[ambient,mbar]/100 -> xC | |
183 movff amb_pressure+0,xB+0 | |
184 movff amb_pressure+1,xB+1 | |
185 call mult16x16 ;xA*xB=xC | |
186 movlw LOW .100 | |
187 movwf xB+0 | |
188 movlw HIGH .100 | |
189 movwf xB+1 | |
190 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder | |
191 movff o2_mv_sensor1+0,xB+0 | |
192 movff o2_mv_sensor1+1,xB+1 | |
193 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder | |
194 ; xC= ppO2/mV | |
195 movff xC+0,opt_x_s1+0 | |
196 movff xC+1,opt_x_s1+1 ; Factor for Sensor1 | |
197 | |
198 movff opt_calibration_O2_ratio,WREG ; Calibration gas %O2 | |
199 mullw .100 | |
200 movff PRODL,xA+0 | |
201 movff PRODH,xA+1 | |
202 ; (%O2*100)*[ambient,mbar]/100 -> xC | |
203 movff amb_pressure+0,xB+0 | |
204 movff amb_pressure+1,xB+1 | |
205 call mult16x16 ;xA*xB=xC | |
206 movlw LOW .100 | |
207 movwf xB+0 | |
208 movlw HIGH .100 | |
209 movwf xB+1 | |
210 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder | |
211 movff o2_mv_sensor2+0,xB+0 | |
212 movff o2_mv_sensor2+1,xB+1 | |
213 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder | |
214 ; xC= ppO2/mV | |
215 movff xC+0,opt_x_s2+0 | |
216 movff xC+1,opt_x_s2+1 ; Factor for Sensor2 | |
217 | |
218 movff opt_calibration_O2_ratio,WREG ; Calibration gas %O2 | |
219 mullw .100 | |
220 movff PRODL,xA+0 | |
221 movff PRODH,xA+1 | |
222 ; (%O2*100)*[ambient,mbar]/100 -> xC | |
223 movff amb_pressure+0,xB+0 | |
224 movff amb_pressure+1,xB+1 | |
225 call mult16x16 ;xA*xB=xC | |
226 movlw LOW .100 | |
227 movwf xB+0 | |
228 movlw HIGH .100 | |
229 movwf xB+1 | |
230 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder | |
231 movff o2_mv_sensor3+0,xB+0 | |
232 movff o2_mv_sensor3+1,xB+1 | |
233 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder | |
234 ; xC= ppO2/mV | |
235 movff xC+0,opt_x_s3+0 | |
236 movff xC+1,opt_x_s3+1 ; Factor for Sensor3 | |
237 | |
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238 bsf sensor1_calibrated_ok |
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239 bsf sensor2_calibrated_ok |
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240 bsf sensor3_calibrated_ok ; Set flags prior check |
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241 rcall check_sensors ; Check O2 sensor thresholds min_mv and max_mv and set use_02_sensorX flags |
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242 ; initialise internal calibration flags |
192 | 243 btfss use_O2_sensor1 ; Sensor out of range? |
189
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244 bcf sensor1_calibrated_ok ; Yes, disable this sensor |
192 | 245 btfss use_O2_sensor2 ; Sensor out of range? |
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246 bcf sensor2_calibrated_ok ; Yes, disable this sensor |
192 | 247 btfss use_O2_sensor3 ; Sensor out of range? |
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248 bcf sensor3_calibrated_ok ; Yes, disable this sensor |
113 | 249 |
250 ; When no sensor is found, enable all three to show error state | |
192 | 251 btfsc use_O2_sensor1 |
113 | 252 return |
192 | 253 btfsc use_O2_sensor2 |
113 | 254 return |
192 | 255 btfsc use_O2_sensor3 |
113 | 256 return |
192 | 257 bsf use_O2_sensor1 |
258 bsf use_O2_sensor2 | |
259 bsf use_O2_sensor3 | |
113 | 260 ; Clear factors |
261 banksel opt_x_s1+0 | |
262 clrf opt_x_s1+0 | |
263 clrf opt_x_s1+1 | |
264 clrf opt_x_s2+0 | |
265 clrf opt_x_s2+1 | |
266 clrf opt_x_s3+0 | |
267 clrf opt_x_s3+1 | |
268 banksel common | |
269 return | |
270 | |
271 compute_ppo2_analog: | |
272 call get_analog_inputs | |
273 bra compute_ppo2_common | |
274 | |
275 global compute_ppo2 ; compute mv_sensorX and ppo2_sensorX arrays | |
276 compute_ppo2: | |
200 | 277 btfss cr_hardware ; cR hardware? |
113 | 278 return ; No |
279 | |
280 btfss s8_digital ; =1: Digital I/O | |
281 bra compute_ppo2_analog ; use analog | |
282 | |
283 ; use digital | |
284 btfss new_s8_data_available ; =1: New data frame recieved | |
285 return | |
286 call compute_mvolts_for_all_sensors | |
287 | |
288 compute_ppo2_common: | |
289 ; o2_mv_sensor1:2 * opt_x_s1:2 = o2_ppo2_sensor1/10000 | |
290 movff o2_mv_sensor1+0,xA+0 | |
291 movff o2_mv_sensor1+1,xA+1 | |
292 movff opt_x_s1+0,xB+0 | |
293 movff opt_x_s1+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 | |
190 | 304 tstfsz xC+1 ; ppO2 is higher then 2.55bar? |
305 setf xC+0 ; Yes. | |
306 movff xC+0,o2_ppo2_sensor1 ; result in 0.01bar | |
192 | 307 ; ; Set to zero if sensor is not active! |
308 ; btfss use_O2_sensor1 | |
309 ; clrf o2_ppo2_sensor1 | |
113 | 310 |
311 ; o2_mv_sensor2:2 * opt_x_s1:2 = o2_ppo2_sensor2/10000 | |
312 movff o2_mv_sensor2+0,xA+0 | |
313 movff o2_mv_sensor2+1,xA+1 | |
314 movff opt_x_s2+0,xB+0 | |
315 movff opt_x_s2+1,xB+1 | |
316 call mult16x16 ;xA:2*xB:2=xC:4 | |
317 movlw LOW .1000 | |
318 movwf xB+0 | |
319 movlw HIGH .1000 | |
320 movwf xB+1 | |
321 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder | |
322 movlw d'1' | |
323 addwf xC+0,F | |
324 movlw d'0' | |
325 addwfc xC+1,F | |
190 | 326 tstfsz xC+1 ; ppO2 is higher then 2.55bar? |
327 setf xC+0 ; Yes. | |
328 movff xC+0,o2_ppo2_sensor2 ; result in 0.01bar | |
192 | 329 ; ; Set to zero if sensor is not active! |
330 ; btfss use_O2_sensor2 | |
331 ; clrf o2_ppo2_sensor2 | |
113 | 332 |
333 ; o2_mv_sensor3:2 * opt_x_s1:2 = o2_ppo2_sensor3/10000 | |
334 movff o2_mv_sensor3+0,xA+0 | |
335 movff o2_mv_sensor3+1,xA+1 | |
336 movff opt_x_s3+0,xB+0 | |
337 movff opt_x_s3+1,xB+1 | |
338 call mult16x16 ;xA:2*xB:2=xC:4 | |
339 movlw LOW .1000 | |
340 movwf xB+0 | |
341 movlw HIGH .1000 | |
342 movwf xB+1 | |
343 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder | |
344 movlw d'1' | |
345 addwf xC+0,F | |
346 movlw d'0' | |
347 addwfc xC+1,F | |
190 | 348 tstfsz xC+1 ; ppO2 is higher then 2.55bar? |
349 setf xC+0 ; Yes. | |
350 movff xC+0,o2_ppo2_sensor3 ; result in 0.01bar | |
192 | 351 ; ; Set to zero if sensor is not active! |
352 ; btfss use_O2_sensor3 | |
353 ; clrf o2_ppo2_sensor3 | |
113 | 354 return ; Done. |
355 | |
356 | |
357 compute_mvolts_for_all_sensors: ; Compute mV or all sensors (S8 Mode) | |
358 ; compute AD results in 100µV steps (16bit/sensor) | |
359 ; 24bit AD result is in 244,1406541nV | |
360 ; Devide 24bit value through 409,5999512 -> 410 (0,01% error) | |
361 #DEFINE ad2mv_factor .410 | |
362 ; Sensor 1 | |
363 clrf xC+3 | |
187
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364 movff ir_s8_buffer+.6,xC+2 |
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365 movff ir_s8_buffer+.5,xC+1 |
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366 movff ir_s8_buffer+.4,xC+0 |
113 | 367 movlw LOW ad2mv_factor |
368 movwf xB+0 | |
369 movlw HIGH ad2mv_factor | |
370 movwf xB+1 | |
371 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder | |
372 movff xC+1,o2_mv_sensor1+1 | |
373 movff xC+0,o2_mv_sensor1+0 ; in 100uV steps | |
374 ; Sensor 2 | |
375 clrf xC+3 | |
187
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376 movff ir_s8_buffer+.9,xC+2 |
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377 movff ir_s8_buffer+.8,xC+1 |
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378 movff ir_s8_buffer+.7,xC+0 |
113 | 379 movlw LOW ad2mv_factor |
380 movwf xB+0 | |
381 movlw HIGH ad2mv_factor | |
382 movwf xB+1 | |
383 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder | |
384 movff xC+1,o2_mv_sensor2+1 | |
385 movff xC+0,o2_mv_sensor2+0 ; in 100uV steps | |
386 ; Sensor 3 | |
387 clrf xC+3 | |
187
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388 movff ir_s8_buffer+.12,xC+2 |
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389 movff ir_s8_buffer+.11,xC+1 |
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390 movff ir_s8_buffer+.10,xC+0 |
113 | 391 movlw LOW ad2mv_factor |
392 movwf xB+0 | |
393 movlw HIGH ad2mv_factor | |
394 movwf xB+1 | |
395 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder | |
396 movff xC+1,o2_mv_sensor3+1 | |
397 movff xC+0,o2_mv_sensor3+0 ; in 100uV steps | |
398 | |
399 bcf new_s8_data_available ; Clear flag | |
400 return ; Done. | |
401 | |
402 | |
403 | |
404 END |