Mercurial > public > hwos_code
annotate src/calibrate.asm @ 647:357341239438
Merge
| author | heinrichs weikamp |
|---|---|
| date | Thu, 14 Oct 2021 12:04:12 +0200 |
| parents | 4050675965ea |
| children | 75e90cd0c2c3 |
| rev | line source |
|---|---|
| 113 | 1 ;============================================================================= |
| 2 ; | |
| 634 | 3 ; File calibration.asm * combined next generation V3.09.4n |
| 113 | 4 ; |
| 5 ; o2 sensor calibration subroutines | |
| 6 ; | |
| 7 ; Copyright (c) 2014, Heinrichs Weikamp, all right reserved. | |
| 8 ;============================================================================= | |
| 9 | |
| 582 | 10 #include "hwos.inc" |
| 604 | 11 #include "shared_definitions.h" ; mailbox between c and asm |
| 582 | 12 #include "math.inc" |
| 13 #include "adc_lightsensor.inc" | |
| 14 #include "eeprom_rs232.inc" | |
| 113 | 15 |
| 16 | |
| 634 | 17 ;============================================================================= |
| 18 calibrate1 CODE | |
| 19 ;============================================================================= | |
| 582 | 20 |
| 623 | 21 |
| 22 IFDEF _external_sensor | |
| 604 | 23 |
| 634 | 24 ;----------------------------------------------------------------------------- |
| 25 ; Transmit current Setpoint from WREG (in cbar) to external Electronics | |
| 26 ; | |
| 27 global transmit_setpoint | |
| 604 | 28 transmit_setpoint: |
| 623 | 29 return ; !!!! FUNCTION IS CURRENTLY DISABLED !!!! |
| 604 | 30 |
| 634 | 31 ; btfsc ext_input_optical ; optical input in use? |
| 32 ; return ; YES - setpoint - TX not supported | |
| 33 ; TSTOSS opt_s8_mode ; NO - S8 mode selected? | |
| 34 ; return ; NO | |
| 35 ; clrf lo ; YES - initialize checksum | |
| 36 ; movff char_I_const_ppO2,hi ; - copy setpoint value to hi | |
| 37 ; movlw 0xAA ; - load start byte | |
| 38 ; rcall tx_to_HUD_chksum ; - transmit to HUD | |
| 39 ; movlw 0x60 ; - load command 'new SP' | |
| 40 ; rcall tx_to_HUD_chksum ; - transmit to HUD | |
| 41 ; movf hi,W ; - load SP in cbar | |
| 42 ; rcall tx_to_HUD_chksum ; - transmit to HUD | |
| 43 ; movf lo,W ; - load checksum | |
| 44 ; rcall tx_to_HUD ; - transmit checksum | |
| 45 ; return ; - done | |
| 604 | 46 |
|
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parents:
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|
47 |
| 634 | 48 ;----------------------------------------------------------------------------- |
| 49 ; Helper Function - Transmit Byte to external Electronics | |
| 50 ; | |
| 51 tx_to_HUD_chksum: | |
| 52 addwf lo,F ; add byte to checksum | |
| 53 tx_to_HUD: | |
| 54 goto ir_s8_tx_single ; transmit byte and return | |
| 55 | |
| 56 | |
| 57 ;----------------------------------------------------------------------------- | |
| 58 ; Compute Calibration Factors | |
| 59 ; | |
| 604 | 60 global calibrate_mix |
| 61 calibrate_mix: | |
| 634 | 62 ; set usage and calibration flags to default values |
| 63 bsf use_O2_sensor1 ; sensor in use | |
| 64 bsf use_O2_sensor2 ; ... | |
| 65 bsf use_O2_sensor3 ; ... | |
| 66 bsf sensor1_calibrated_ok ; sensor calibration ok | |
| 67 bsf sensor2_calibrated_ok ; ... | |
| 68 bsf sensor3_calibrated_ok ; ... | |
| 604 | 69 |
| 623 | 70 ; ISR-safe 2 byte copy of the current pressure to xB for later use |
| 71 SMOVII pressure_abs,xB | |
| 72 | |
| 604 | 73 ; check for HUD |
| 634 | 74 btfsc ext_input_optical ; optical interface in use? |
| 75 bra calibrate_mix1 ; YES - skip | |
| 76 TSTOSS opt_s8_mode ; NO - S8 interface in use? | |
| 77 bra calibrate_mix1 ; NO - skip HUD part | |
| 78 ;bra calibrate_mix0 ; YES - calibrate S8 HUD | |
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|
79 |
| 634 | 80 ; calibrate S8-connected external electronics |
| 81 calibrate_mix0: | |
| 604 | 82 clrf lo ; initialize checksum |
| 634 | 83 movlw 0xAA ; load start byte |
| 84 rcall tx_to_HUD_chksum ; transmit to HUD | |
| 85 movlw 0x31 ; load calibration command | |
| 86 rcall tx_to_HUD_chksum ; transmit to HUD | |
| 87 movff opt_calibration_O2_ratio,WREG ; load calibration gas %O2 | |
| 88 rcall tx_to_HUD_chksum ; transmit to HUD | |
| 89 movf xB+0,W ; load current absolute pressure low byte | |
| 90 rcall tx_to_HUD_chksum ; transmit to HUD | |
| 91 movf xB+1,W ; load current absolute pressure high byte | |
| 92 rcall tx_to_HUD_chksum ; transmit to HUD | |
| 93 movf lo,W ; load checksum | |
| 604 | 94 rcall tx_to_HUD ; transmit to HUD |
| 582 | 95 |
| 604 | 96 ; calibrate internal sensors |
| 634 | 97 calibrate_mix1: ; compute C = %O2 * 100 * absolute pressure [mbar] / 100 |
| 98 movff opt_calibration_O2_ratio,WREG ; load calibration gas %O2 | |
| 99 mullw .100 ; multiply with 100 | |
| 100 MOVII PROD,xA ; copy result to xA | |
| 101 call mult16x16 ; xC = xA * xB | |
| 102 MOVLI .100,xB ; prepare division by 100 | |
| 623 | 103 call div32x16 ; xC:4 = xC:4 / xB:2 with xA as remainder |
| 604 | 104 |
| 105 ; compute factor for sensor 1 | |
| 634 | 106 MOVRR xC,mpr,.4 ; backup calibration value C |
| 107 MOVII sensor1_mv,xB ; get mV from sensor 1 | |
| 623 | 108 call div32x16 ; xC:4 = xC:4 / xB:2 with xA as remainder |
| 109 MOVII xC,opt_x_s1 ; xC = ppO2/mV as factor for sensor 1 | |
| 604 | 110 |
| 111 ; compute factor for sensor 2 | |
| 634 | 112 MOVRR mpr,xC,.4 ; restore C |
| 113 MOVII sensor2_mv,xB ; get mV from sensor 2 | |
| 623 | 114 call div32x16 ; xC:4 = xC:4 / xB:2 with xA as remainder |
| 115 MOVII xC,opt_x_s2 ; xC = ppO2/mV as factor for sensor 2 | |
| 604 | 116 |
| 117 ; compute factor for sensor 3 | |
| 634 | 118 MOVRR mpr,xC,.4 ; restore C |
| 119 MOVII sensor3_mv,xB ; get mV from sensor 3 | |
| 623 | 120 call div32x16 ; xC:4 = xC:4 / xB:2 with xA as remainder |
| 121 MOVII xC,opt_x_s3 ; xC = ppO2/mV as factor for sensor 3 | |
| 604 | 122 |
| 123 ; check sensor 1 for min/max mV | |
| 623 | 124 MOVII sensor1_mv,sub_a ; get mV from sensor 1 |
| 634 | 125 rcall calibrate_mix_helper ; check mV for min/max boundary, returns with WREG = 0 if ok, else WREG = 1 |
| 126 TSTFSZ WREG ; sensor mV within boundary? | |
| 127 bcf use_O2_sensor1 ; NO - revoke sensor from usage | |
|
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|
128 |
| 604 | 129 ; check sensor 2 for min/max mV |
| 623 | 130 MOVII sensor2_mv,sub_a ; get mV from sensor 2 |
| 634 | 131 rcall calibrate_mix_helper ; check mV for min/max boundary, returns with WREG = 0 if ok, else WREG = 1 |
| 132 TSTFSZ WREG ; sensor mV within boundary? | |
| 133 bcf use_O2_sensor2 ; NO - revoke sensor from usage | |
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|
134 |
| 604 | 135 ; check sensor 3 for min/max mV |
| 623 | 136 MOVII sensor3_mv,sub_a ; get mV from sensor 3 |
| 634 | 137 rcall calibrate_mix_helper ; check mV for min/max boundary, returns with WREG = 0 if ok, else WREG = 1 |
| 138 TSTFSZ WREG ; sensor mV within boundary? | |
| 139 bcf use_O2_sensor3 ; NO - revoke sensor from usage | |
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|
140 |
| 604 | 141 calibrate_mix2: |
| 142 ; check for HUD | |
| 143 btfss hud_connection_ok ; HUD connection existing? | |
| 144 bra calibrate_mix3 ; NO - skip HUD part | |
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|
145 |
| 634 | 146 ; TODO: wait for HUD to complete calibration an send updated data |
| 147 | |
| 623 | 148 ; copy disable flags from HUD digital input |
| 634 | 149 btfss sensor1_active ; sensor 1 usable? |
| 150 bcf use_O2_sensor1 ; NO - revoke sensor from usage | |
| 151 btfss sensor2_active ; sensor 2 usable? | |
| 152 bcf use_O2_sensor2 ; NO - revoke sensor from usage | |
| 153 btfss sensor3_active ; sensor 3 usable? | |
| 154 bcf use_O2_sensor3 ; NO - revoke sensor from usage | |
| 113 | 155 |
| 604 | 156 calibrate_mix3: |
| 634 | 157 ; clear calibration flags if sensors are not usable |
| 158 btfss use_O2_sensor1 ; sensor 1 usable? | |
| 159 bcf sensor1_calibrated_ok ; NO - revoke calibration | |
| 160 btfss use_O2_sensor2 ; sensor 2 usable? | |
| 161 bcf sensor2_calibrated_ok ; NO - revoke calibration | |
| 162 btfss use_O2_sensor3 ; sensor 3 usable? | |
| 163 bcf sensor3_calibrated_ok ; NO - revoke calibration | |
| 623 | 164 |
| 634 | 165 ; if there is no usable sensor at all, then enable all three |
| 166 ; sensors to show error state and clear calibration factors | |
| 167 btfsc use_O2_sensor1 ; sensor 1 usable? | |
| 168 return ; YES - done | |
| 169 btfsc use_O2_sensor2 ; NO - sensor 2 usable? | |
| 170 return ; YES - done | |
| 171 btfsc use_O2_sensor3 ; NO - sensor 3 usable? | |
| 172 return ; YES - done | |
| 173 bsf use_O2_sensor1 ; NO - enable all sensors | |
| 174 bsf use_O2_sensor2 ; - ... | |
| 175 bsf use_O2_sensor3 ; - ... | |
| 176 CLRR opt_x_s1,.6 ; - clear calibration factors (3x 16 bit) | |
| 177 return ; - done | |
| 560 | 178 |
| 448 | 179 |
| 634 | 180 ;----------------------------------------------------------------------------- |
| 181 ; Helper Function - Check if Sensor mV Value is within Min/Max Boundary | |
| 182 ; | |
| 183 calibrate_mix_helper: | |
| 184 MOVLI min_mv,sub_b ; load minimum boundary into sub_b | |
| 185 call sub16 ; sub_c = sub_a - sub_b | |
| 186 btfsc neg_flag ; sensor mV lower than minimum boundary? | |
| 187 retlw .1 ; YES - return signaling boundary violation | |
| 188 | |
| 189 MOVLI max_mv,sub_b ; load maximum boundary into sub_b | |
| 190 call sub16 ; sub_c = sub_a - sub_b | |
| 191 btfss neg_flag ; sensor mV higher than maximum boundary? | |
| 192 retlw .1 ; YES - return signaling boundary violation | |
| 193 | |
| 194 retlw .0 ; return signaling min/max ok | |
| 195 | |
| 196 ENDIF ; _external_sensor | |
| 197 | |
| 198 ;============================================================================= | |
| 199 calibrate2 CODE | |
| 200 ;============================================================================= | |
| 201 | |
| 202 IFDEF _external_sensor | |
| 203 | |
| 204 ;----------------------------------------------------------------------------- | |
| 205 ; Compute Sensor mV from Raw Values received via S8 digital Interface | |
| 206 ; | |
| 207 global compute_mvolts_from_rawdata | |
| 208 compute_mvolts_from_rawdata: | |
| 209 | |
| 623 | 210 ; compute AD results in 100 µV steps (16 bit/sensor) |
| 211 ; 24 bit AD result is in 244.1406541 nV | |
| 212 ; divide 24 bit value by 409.5999512 -> 410 with only 0.01% error | |
| 582 | 213 #DEFINE ad2mv_factor .410 |
| 623 | 214 |
| 634 | 215 MOVLI ad2mv_factor,xB ; load conversion factor into xB |
| 623 | 216 |
| 560 | 217 ; Sensor 1 |
| 623 | 218 SMOVTT s8_rawdata_sensor1,xC ; ISR-safe copy of 3 bytes to xC |
| 219 clrf xC+3 ; clear MSB of xC | |
| 220 call div32x16 ; xC:4 = xC:4 / xB:2 with xA as remainder | |
| 634 | 221 MOVII xC,sensor1_mv ; store result |
| 623 | 222 |
| 560 | 223 ; Sensor 2 |
| 623 | 224 SMOVTT s8_rawdata_sensor2,xC ; ISR-safe copy of 3 bytes to xC |
| 225 clrf xC+3 ; clear MSB of xC | |
| 226 call div32x16 ; xC:4 = xC:4 / xB:2 with xA as remainder | |
| 634 | 227 MOVII xC,sensor2_mv ; store result |
| 623 | 228 |
| 560 | 229 ; Sensor 3 |
| 623 | 230 SMOVTT s8_rawdata_sensor3,xC ; ISR-safe copy of 3 bytes to xC |
| 231 clrf xC+3 ; clear MSB of xC | |
| 232 call div32x16 ; xC:4 = xC:4 / xB:2 with xA as remainder | |
| 634 | 233 MOVII xC,sensor3_mv ; store result |
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234 |
| 604 | 235 return ; done |
| 113 | 236 |
| 623 | 237 ENDIF ; _external_sensor |
| 238 | |
| 634 | 239 ;----------------------------------------------------------------------------- |
| 623 | 240 |
| 241 END |