Mercurial > public > hwos_code
annotate src/adc_lightsensor.asm @ 594:b891cd260d1b
2.97 SP1 release
| author | heinrichsweikamp |
|---|---|
| date | Thu, 17 May 2018 20:46:33 +0200 |
| parents | b455b31ce022 |
| children | 00b24fb4324d |
| rev | line source |
|---|---|
| 0 | 1 ;============================================================================= |
| 2 ; | |
| 582 | 3 ; File adc.asm V2.98 |
| 0 | 4 ; |
| 5 ; | |
| 6 ; Copyright (c) 2011, JD Gascuel, HeinrichsWeikamp, all right reserved. | |
| 7 ;============================================================================= | |
| 8 ; HISTORY | |
| 9 ; 2011-08-08 : [mH] moving from OSTC code | |
| 10 | |
| 275 | 11 #include "hwos.inc" |
| 0 | 12 #include "math.inc" |
| 13 #include "wait.inc" | |
| 14 #include "eeprom_rs232.inc" | |
| 113 | 15 #include "i2c.inc" |
| 0 | 16 |
| 582 | 17 extern reset_battery_internal_only |
| 18 | |
| 19 sensors CODE | |
| 20 | |
| 21 ;============================================================================= | |
| 0 | 22 |
| 23 wait_adc: | |
| 24 movwf ADCON0 | |
| 582 | 25 nop |
| 26 bsf ADCON0,1 ; start ADC | |
| 0 | 27 wait_adc2: |
| 582 | 28 btfsc ADCON0,1 ; Wait... |
| 0 | 29 bra wait_adc2 |
| 582 | 30 return |
| 0 | 31 |
| 32 global get_battery_voltage | |
| 582 | 33 get_battery_voltage: ; starts ADC and waits until finished |
| 34 btfss battery_gauge_available | |
| 35 bra get_battery_voltage1 ; Normal ostc3 hardware | |
| 113 | 36 |
| 582 | 37 call lt2942_get_accumulated_charge |
| 38 call lt2942_get_voltage | |
| 39 | |
| 40 tstfsz batt_voltage+1 ; <256mV? | |
| 41 bra get_battery_voltage_noretry ; No | |
| 218 | 42 |
| 582 | 43 ; Retry |
| 44 call lt2942_get_accumulated_charge | |
| 45 call lt2942_get_voltage | |
| 46 | |
| 466 | 47 get_battery_voltage_noretry: |
| 582 | 48 btfsc divemode |
| 49 return ; Not in divemode | |
| 218 | 50 |
| 582 | 51 bcf cv_active |
| 52 bcf cc_active | |
| 53 bcf LEDr | |
| 54 bcf TRISJ,2 ; Chrg-Out output | |
| 55 bsf CHRG_OUT | |
| 120 | 56 |
| 582 | 57 btfss CHRG_IN |
| 58 bra charge_cc_active | |
| 120 | 59 |
| 582 | 60 bcf CHRG_OUT |
| 61 bsf TRISJ,2 ; Chrg-Out high impedance | |
| 120 | 62 |
| 582 | 63 WAITMS d'1' |
| 120 | 64 |
| 582 | 65 btfsc CHRG_IN |
| 66 return | |
| 67 ;cv_active: | |
| 68 decfsz get_bat_volt_counter,F | |
| 69 return | |
| 70 movlw .15 | |
| 71 cpfsgt batt_voltage+1 ; Batt Voltage >= 16*256mV (4,096V)? | |
| 72 bra charge_cc_active ; No | |
| 73 bsf cc_active | |
| 74 bsf cv_active | |
| 75 bsf LEDr ; Indicate charging | |
| 76 call lt2942_charge_done ; Reset accumulating registers to 0xFFFF | |
| 77 WAITMS d'10' | |
| 78 bcf LEDr ; Indicate charging | |
| 79 bsf get_bat_volt_counter,0 ; =1 | |
| 80 return | |
| 120 | 81 |
| 207 | 82 charge_cc_active: |
| 582 | 83 bsf cc_active |
| 84 bsf LEDr ; Indicate charging | |
| 85 bcf CHRG_OUT | |
| 86 bsf TRISJ,2 ; Chrg-Out high impedance | |
| 87 movlw .10 | |
| 88 movwf get_bat_volt_counter | |
| 89 return | |
| 113 | 90 |
| 91 get_battery_voltage1: | |
| 582 | 92 bsf adc_running ; =1: The ADC is in use |
| 93 movlw b'00100000' ; 2.048V Vref+ -> 1LSB = 500µV | |
| 0 | 94 movwf ADCON1 |
| 582 | 95 movlw b'00011001' ; power on ADC, select AN6 |
| 96 rcall wait_adc | |
| 0 | 97 |
| 582 | 98 movff ADRESH,batt_voltage+1 ; store value |
| 99 movff ADRESL,batt_voltage+0 ; store value | |
| 100 bcf ADCON0,0 ; power off ADC | |
| 0 | 101 |
| 582 | 102 ; Multiply with 2,006 to be exact here... |
| 0 | 103 ; bcf STATUS,C |
| 104 ; rlcf xA+0,F | |
| 105 ; | |
| 582 | 106 ; rlcf xA+1,F ; x2 |
| 0 | 107 |
| 582 | 108 ; movff xA+0,batt_voltage+0 ; store value |
| 0 | 109 ; movff xA+1,batt_voltage+1 |
| 110 | |
| 582 | 111 movlw LOW lithium_36v_low |
| 0 | 112 movwf sub_a+0 |
| 582 | 113 movlw HIGH lithium_36v_low |
| 0 | 114 movwf sub_a+1 |
| 115 movff batt_voltage+0,sub_b+0 | |
| 116 movff batt_voltage+1,sub_b+1 | |
| 582 | 117 call subU16 ; sub_c = sub_a - sub_b |
| 118 ; Battery is 3,6V (>lithium_36v_low?) | |
| 0 | 119 btfss neg_flag |
| 582 | 120 bra get_battery_voltage4 ; No, use 1,5V |
| 0 | 121 |
| 582 | 122 bsf battery_is_36v ; Yes, set flag (Cleared in power-on reset only!) |
| 0 | 123 |
| 582 | 124 ; Check if the battery is near-dead already |
| 125 movlw LOW lithium_36v_empty | |
| 0 | 126 movwf sub_a+0 |
| 582 | 127 movlw HIGH lithium_36v_empty |
| 0 | 128 movwf sub_a+1 |
| 582 | 129 call subU16 ; sub_c = sub_a - sub_b |
| 130 ; Battery is not dead yet (>lithium_36v_empty?) | |
| 0 | 131 btfsc neg_flag |
| 582 | 132 bra get_battery_voltage2 ; Yes, battery is still ok |
| 0 | 133 |
| 582 | 134 ; Battery is probably dead very soon |
| 135 ; Set ">=24Ah used" into battery gauge registers | |
| 136 movlw .128 | |
| 137 movff WREG,battery_gauge+5 | |
| 0 | 138 |
| 139 get_battery_voltage2: | |
| 582 | 140 ; Use 3,6V battery gauging mode |
| 0 | 141 movff battery_gauge+5,xC+3 |
| 142 movff battery_gauge+4,xC+2 | |
| 143 movff battery_gauge+3,xC+1 | |
| 144 movff battery_gauge+2,xC+0 | |
| 145 ; battery_gauge:6 is nAs | |
| 146 ; devide through 65536 | |
| 448 | 147 ; devide through battery_capacity:2 |
| 148 ; Result is in percent | |
| 149 movff internal_battery_capacity+0,xB+0 | |
| 150 movff internal_battery_capacity+1,xB+1 | |
| 582 | 151 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder |
| 0 | 152 movff xC+0,lo |
| 582 | 153 ; Limit to 100 |
| 154 movlw .100 | |
| 155 cpfslt lo | |
| 156 movwf lo | |
| 0 | 157 ; lo will be between 0 (Full) and 100 (empty) |
| 158 movf lo,W | |
| 159 sublw .100 | |
| 160 movwf lo | |
| 161 get_battery_voltage3: | |
| 162 movlw .100 | |
| 163 cpfslt lo | |
| 164 movwf lo | |
| 165 ; lo will be between 100 (Full) and 0 (empty) | |
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166 |
| 582 | 167 ; use 3,6V battery sensing based on 50mA load |
| 168 ; 75% | |
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169 movff batt_voltage+0,sub_b+0 |
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170 movff batt_voltage+1,sub_b+1 |
| 582 | 171 movlw LOW lithium_36v_75 |
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172 movwf sub_a+0 |
| 582 | 173 movlw HIGH lithium_36v_75 |
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174 movwf sub_a+1 |
| 582 | 175 call subU16 ; sub_c = sub_a - sub_b |
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176 btfsc neg_flag |
| 582 | 177 bra get_battery_voltage3a |
| 178 movlw .75 | |
| 179 movwf lo | |
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180 get_battery_voltage3a: |
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181 ; 50% |
| 582 | 182 movlw LOW lithium_36v_50 |
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183 movwf sub_a+0 |
| 582 | 184 movlw HIGH lithium_36v_50 |
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185 movwf sub_a+1 |
| 582 | 186 call subU16 ; sub_c = sub_a - sub_b |
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187 btfsc neg_flag |
| 582 | 188 bra get_battery_voltage3b |
| 189 movlw .50 | |
| 190 movwf lo | |
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191 get_battery_voltage3b: |
| 582 | 192 ; 25% |
| 193 movlw LOW lithium_36v_25 | |
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194 movwf sub_a+0 |
| 582 | 195 movlw HIGH lithium_36v_25 |
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196 movwf sub_a+1 |
| 582 | 197 call subU16 ; sub_c = sub_a - sub_b |
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198 btfsc neg_flag |
| 582 | 199 bra get_battery_voltage3c |
| 200 movlw .25 | |
| 201 movwf lo | |
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202 get_battery_voltage3c: |
| 582 | 203 ; 10% |
| 204 movlw LOW lithium_36v_10 | |
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205 movwf sub_a+0 |
| 582 | 206 movlw HIGH lithium_36v_10 |
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207 movwf sub_a+1 |
| 582 | 208 call subU16 ; sub_c = sub_a - sub_b |
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209 btfsc neg_flag |
| 582 | 210 bra get_battery_voltage3d |
| 211 movlw .10 | |
| 212 movwf lo | |
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213 get_battery_voltage3d: |
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214 movlw .100 |
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215 cpfslt lo |
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216 movwf lo |
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217 ; lo will be between 100 (Full) and 0 (empty) |
| 582 | 218 movf batt_percent,W |
| 219 cpfsgt lo ; keep batt_percent on the lowest value found | |
| 220 movff lo,batt_percent ; store value | |
| 221 btfsc battery_is_36v ; but always use computed value for 3,6V battery | |
| 222 movff lo,batt_percent ; store value | |
| 223 bcf adc_running ; =1: The ADC is in use | |
| 0 | 224 return |
| 225 | |
| 226 get_battery_voltage4: | |
| 582 | 227 ; Use 1,5V battery voltage mode |
| 228 ; Use approximation (batt_voltage:2-aa_15v_low)/4 = lo | |
| 0 | 229 movff batt_voltage+0,sub_a+0 |
| 230 movff batt_voltage+1,sub_a+1 | |
| 582 | 231 movlw LOW aa_15v_low |
| 232 movwf sub_b+0 | |
| 233 movlw HIGH aa_15v_low | |
| 0 | 234 movwf sub_b+1 |
| 582 | 235 call subU16 ; sub_c = sub_a - sub_b |
| 236 bcf STATUS,C | |
| 237 rrcf sub_c+1 | |
| 238 rrcf sub_c+0 ; /2 | |
| 239 bcf STATUS,C | |
| 240 rrcf sub_c+1 | |
| 241 rrcf sub_c+0 ; /4 | |
| 242 movff sub_c+0,lo | |
| 243 bra get_battery_voltage3d ; Check limits and return | |
| 0 | 244 |
| 245 global get_ambient_level | |
| 582 | 246 get_ambient_level: ; starts ADC and waits until finished |
| 247 btfsc adc_running ; ADC in use? | |
| 248 return ; Yes, return | |
| 0 | 249 |
| 582 | 250 btfsc ambient_sensor |
| 251 bra get_ambient_level1 ; Normal ostc3 hardware | |
| 203 | 252 |
| 582 | 253 banksel isr_backup ; Back to Bank0 ISR data |
| 203 | 254 movff opt_brightness,isr1_temp |
| 582 | 255 incf isr1_temp,F ; adjust 0-2 to 1-3 |
| 256 movlw ambient_light_max_high_cr ; cR and 2 hardware brightest setting | |
| 203 | 257 dcfsnz isr1_temp,F |
| 582 | 258 movlw ambient_light_max_eco ; brightest setting |
| 203 | 259 dcfsnz isr1_temp,F |
| 582 | 260 movlw ambient_light_max_medium ; brightest setting |
| 203 | 261 |
| 582 | 262 movff WREG,ambient_light+0 ; Set to max. |
| 263 movff ambient_light+0,max_CCPR1L ; Store value for dimming in TMR7 interrupt | |
| 203 | 264 return |
| 113 | 265 |
| 266 get_ambient_level1: | |
| 582 | 267 movlw b'00000000' ; Vref+ = Vdd |
| 0 | 268 movwf ADCON1 |
| 582 | 269 movlw b'00011101' ; power on ADC, select AN7 |
| 270 rcall wait_adc | |
| 0 | 271 |
| 272 movff ADRESH,ambient_light+1 | |
| 273 movff ADRESL,ambient_light+0 | |
| 582 | 274 bcf ADCON0,0 ; power off ADC |
| 0 | 275 |
| 276 ; ambient_light:2 is between 4096 (direct sunlight) and about 200 (darkness) | |
| 582 | 277 ; First: Divide by 16 |
| 278 banksel ambient_light | |
| 0 | 279 bcf STATUS,C |
| 280 rrcf ambient_light+1 | |
| 281 rrcf ambient_light+0 | |
| 282 bcf STATUS,C | |
| 283 rrcf ambient_light+1 | |
| 284 rrcf ambient_light+0 | |
| 285 bcf STATUS,C | |
| 286 rrcf ambient_light+1 | |
| 287 rrcf ambient_light+0 | |
| 288 bcf STATUS,C | |
| 289 rrcf ambient_light+1 | |
| 290 rrcf ambient_light+0 | |
| 291 ; Result: ambient_light:2/16 | |
| 292 ; Now, make sure to have value between ambient_light_low and ambient_light_max | |
| 293 | |
| 582 | 294 movlw .254 |
| 295 tstfsz ambient_light+1 ; >255? | |
| 296 movwf ambient_light+0 ; avoid ADC clipping | |
| 0 | 297 |
| 582 | 298 incfsz ambient_light+0,W ; =255? |
| 299 bra get_ambient_level2 ; No, continue | |
| 0 | 300 |
| 582 | 301 movlw .254 |
| 302 movwf ambient_light+0 ; avoid ADC clipping | |
| 0 | 303 |
| 304 get_ambient_level2: | |
| 582 | 305 ; movlw .10 |
| 306 ; subwf ambient_light+0,F ; Subtract 10 (ADC Offset) | |
| 307 ; btfsc STATUS,N | |
| 308 ; movwf ambient_light+0 ; avoid clipping | |
| 201 | 309 |
| 582 | 310 banksel isr_backup ; Back to Bank0 ISR data |
| 0 | 311 movff opt_brightness,isr1_temp |
| 312 | |
| 582 | 313 btfsc RCSTA1,7 ; UART module on? |
| 314 clrf isr1_temp ; Yes, set temporally to eco mode | |
| 0 | 315 |
| 582 | 316 incf isr1_temp,F ; adjust 0-2 to 1-3 |
| 0 | 317 |
| 582 | 318 banksel common ; flag is in bank1 |
| 319 movlw ambient_light_max_high_cr ; cR and 2 hardware brightest setting | |
| 320 btfss battery_gauge_available | |
| 321 movlw ambient_light_max_high_15V ; 1,5V battery brightest setting | |
| 322 btfsc battery_is_36v ; 3,6V battery in use? | |
| 323 movlw ambient_light_max_high_36V ; 3,6V battery brightest setting | |
| 324 banksel isr_backup ; Back to Bank0 ISR data | |
| 0 | 325 |
| 326 dcfsnz isr1_temp,F | |
| 582 | 327 movlw ambient_light_max_eco ; brightest setting |
| 0 | 328 dcfsnz isr1_temp,F |
| 582 | 329 movlw ambient_light_max_medium ; brightest setting |
| 0 | 330 |
| 582 | 331 banksel ambient_light |
| 332 incf ambient_light+0,F ; +1 | |
| 333 cpfslt ambient_light+0 ; smaller then WREG? | |
| 334 movwf ambient_light+0 ; No, set to max. | |
| 0 | 335 |
| 582 | 336 banksel isr_backup ; Back to Bank0 ISR data |
| 0 | 337 movff opt_brightness,isr1_temp |
| 582 | 338 incf isr1_temp,F ; adjust 0-2 to 1-3 |
| 339 movlw ambient_light_min_high ; darkest setting | |
| 0 | 340 |
| 341 dcfsnz isr1_temp,F | |
| 582 | 342 movlw ambient_light_min_eco ; darkest setting |
| 0 | 343 dcfsnz isr1_temp,F |
| 582 | 344 movlw ambient_light_min_medium ; darkest setting |
| 0 | 345 dcfsnz isr1_temp,F |
| 582 | 346 movlw ambient_light_min_high ; darkest setting |
| 347 | |
| 348 banksel ambient_light | |
| 349 cpfsgt ambient_light+0 ; bigger then WREG? | |
| 350 movwf ambient_light+0 ; No, set to min | |
| 351 banksel common | |
| 352 | |
| 353 movff ambient_light+0,max_CCPR1L ; Store value for dimming in TMR7 interrupt | |
| 0 | 354 return |
| 355 | |
| 113 | 356 global get_analog_inputs |
| 582 | 357 get_analog_inputs: ; starts ADC and waits until finished |
| 358 bsf adc_running ; =1: The ADC is in use | |
| 359 btfsc TFT_PWM | |
| 360 bra get_analog_inputs ; Wait for PWM low | |
| 361 movlw b'00100000' ; 2.048V Vref+ -> 1LSB = 500µV | |
| 113 | 362 movwf ADCON1 |
| 582 | 363 movlw b'00100001' ; power on ADC, select AN8 |
| 364 rcall wait_adc | |
| 365 bcf STATUS,C | |
| 366 rrcf ADRESH,F ; /2 | |
| 367 rrcf ADRESL,W | |
| 368 ; add to o2_mv_sensor1:2 | |
| 369 addwf o2_mv_sensor1+0,F | |
| 370 movf ADRESH,W | |
| 371 addwfc o2_mv_sensor1+1,F | |
| 372 ; Devide by 2 | |
| 373 bcf STATUS,C | |
| 374 rrcf o2_mv_sensor1+1,F ; /2 | |
| 375 rrcf o2_mv_sensor1+0,F | |
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376 |
| 582 | 377 movlw HIGH ignore_mv |
| 378 cpfsgt o2_mv_sensor1+1 ; >ignore_mv? | |
| 379 bra get_analog_inputs2a ; No | |
| 380 ; Yes, ignore this reading | |
| 381 clrf o2_mv_sensor1+1 | |
| 382 clrf o2_mv_sensor1+0 | |
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383 get_analog_inputs2a: |
| 582 | 384 ; Ignore 1,9mV noise for not-connected inputs |
| 385 tstfsz o2_mv_sensor1+1 ; >25,5mV? | |
| 386 bra get_analog_inputs2 ; Yes, skip here | |
| 387 movlw .19 | |
| 388 cpfsgt o2_mv_sensor1+0 ; >1,9mV? | |
| 389 clrf o2_mv_sensor1+0 ; no, clear result | |
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390 get_analog_inputs2: |
| 582 | 391 movlw b'00100101' ; power on ADC, select AN9 |
| 392 rcall wait_adc | |
| 393 bcf STATUS,C | |
| 394 rrcf ADRESH,F ; /2 | |
| 395 rrcf ADRESL,W | |
| 396 ; add to o2_mv_sensor2:2 | |
| 397 addwf o2_mv_sensor2+0,F | |
| 398 movf ADRESH,W | |
| 399 addwfc o2_mv_sensor2+1,F | |
| 400 ; Devide by 2 | |
| 401 bcf STATUS,C | |
| 402 rrcf o2_mv_sensor2+1,F ; /2 | |
| 403 rrcf o2_mv_sensor2+0,F | |
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404 |
| 582 | 405 movlw HIGH ignore_mv |
| 406 cpfsgt o2_mv_sensor2+1 ; >ignore_mv? | |
| 407 bra get_analog_inputs3a ; No | |
| 408 ; Yes, ignore this reading | |
| 409 clrf o2_mv_sensor2+1 | |
| 410 clrf o2_mv_sensor2+0 | |
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411 get_analog_inputs3a: |
| 582 | 412 ; Ignore 1,9mV noise for not-connected inputs |
| 413 tstfsz o2_mv_sensor2+1 ; >25,5mV? | |
| 414 bra get_analog_inputs3 ; Yes, skip here | |
| 415 movlw .19 | |
| 416 cpfsgt o2_mv_sensor2+0 ; >1,9mV? | |
| 417 clrf o2_mv_sensor2+0 ; no, clear result | |
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418 get_analog_inputs3: |
| 582 | 419 movlw b'00101001' ; power on ADC, select AN10 |
| 420 rcall wait_adc | |
| 421 bcf STATUS,C | |
| 422 rrcf ADRESH,F ; /2 | |
| 423 rrcf ADRESL,W | |
| 424 ; add to o2_mv_sensor3:2 | |
| 425 addwf o2_mv_sensor3+0,F | |
| 426 movf ADRESH,W | |
| 427 addwfc o2_mv_sensor3+1,F | |
| 428 ; Devide by 2 | |
| 429 bcf STATUS,C | |
| 430 rrcf o2_mv_sensor3+1,F ; /2 | |
| 431 rrcf o2_mv_sensor3+0,F | |
|
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432 |
| 582 | 433 movlw HIGH ignore_mv |
| 434 cpfsgt o2_mv_sensor3+1 ; >ignore_mv? | |
| 435 bra get_analog_inputs4a ; No | |
| 436 ; Yes, ignore this reading | |
| 437 clrf o2_mv_sensor3+1 | |
| 438 clrf o2_mv_sensor3+0 | |
|
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439 get_analog_inputs4a: |
| 582 | 440 ; Ignore 1,9mV noise for not-connected inputs |
| 441 tstfsz o2_mv_sensor3+1 ; >25,5mV? | |
| 442 bra get_analog_inputs4 ; Yes, skip here | |
| 443 movlw .19 | |
| 444 cpfsgt o2_mv_sensor3+0 ; >1,9mV? | |
| 445 clrf o2_mv_sensor3+0 ; no, clear result | |
|
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446 get_analog_inputs4: |
| 582 | 447 bcf ADCON0,0 ; power off ADC |
| 448 bcf adc_running ; =1: The ADC is in use | |
| 449 return | |
| 0 | 450 |
| 582 | 451 global piezo_config ; sets up piezo sensitivity of heinrichs weikamp piezo buttons (~30ms) |
| 452 piezo_config: ; Settings between 20 and 200 | |
| 453 clrf TMR5H | |
| 454 clrf TMR5L ; ~2sec | |
| 455 bcf PIR5,TMR5IF ; Clear flag | |
| 456 bcf switch_right | |
| 457 bcf switch_left | |
|
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458 piezo_config0: |
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459 btfsc switch_right |
| 582 | 460 bra piezo_config |
|
416
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461 btfsc switch_left |
| 582 | 462 bra piezo_config ; Restart on button press |
| 463 | |
|
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464 btfss PIR5,TMR5IF |
| 582 | 465 bra piezo_config0 ; Wait loop |
| 468 | 466 |
| 582 | 467 bcf INTCON,GIE |
| 468 movff opt_cR_button_right,WREG ; right button | |
| 469 btfsc flip_screen ; 180° rotation ? | |
| 470 movff opt_cR_button_left,WREG ; Yes, left button | |
| 471 rcall piezo_config_tx | |
|
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472 |
| 582 | 473 movff opt_cR_button_left,WREG ; left button |
| 474 btfsc flip_screen ; 180° rotation ? | |
| 475 movff opt_cR_button_right,WREG ; Yes, right button | |
| 476 rcall piezo_config_tx | |
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477 |
| 582 | 478 movlw .20 ; reserved |
| 479 rcall piezo_config_tx | |
| 480 movlw .20 ; reserved | |
| 481 rcall piezo_config_tx | |
| 482 bsf INTCON,GIE | |
| 483 return | |
| 204 | 484 |
| 582 | 485 piezo_config_tx: ; send one byte |
| 486 movwf lo ; store byte | |
| 487 movlw .8 | |
| 488 movwf hi ; bit counter | |
| 489 bcf TX3_PIEZO_CFG ; start bit | |
| 490 rcall piezo_config_wait_bit | |
| 113 | 491 piezo_config_tx_loop: |
| 582 | 492 btfss lo,0 ; LSB first |
| 493 bcf TX3_PIEZO_CFG | |
| 494 btfsc lo,0 ; LSB first | |
| 495 bsf TX3_PIEZO_CFG | |
| 496 rcall piezo_config_wait_bit | |
| 497 rrncf lo,F | |
| 498 decfsz hi,F | |
| 499 bra piezo_config_tx_loop | |
| 500 bsf TX3_PIEZO_CFG ; stop bit | |
| 501 rcall piezo_config_wait_bit | |
| 502 return | |
| 113 | 503 |
| 504 piezo_config_wait_bit: | |
| 582 | 505 setf TMR5H |
| 506 movlw .255-.26 ; 26 x 31,5µs = 819us | |
| 113 | 507 movwf TMR5L |
| 582 | 508 bcf PIR5,TMR5IF ; Clear flag |
| 113 | 509 piezo_config_wait_bit3: |
| 582 | 510 btfss PIR5,TMR5IF |
| 113 | 511 bra piezo_config_wait_bit3 ; Wait loop |
| 512 return | |
| 513 | |
| 582 | 514 global reset_battery_pointer |
| 515 reset_battery_pointer: ; Resets battery pointer 0x07-0x0C and battery_gauge:5 | |
| 516 extern lt2942_charge_done | |
| 517 btfsc battery_gauge_available ; Something to reset? | |
| 518 call lt2942_charge_done ; Yes, reset accumulating registers to 0xFFFF | |
| 519 goto reset_battery_internal_only ; and return | |
| 520 | |
| 521 | |
| 522 global get_analog_switches | |
| 523 get_analog_switches: ; starts ADC and waits until finished | |
| 524 btfsc analog_switches | |
| 525 bra get_analog_switches2 | |
| 526 ; no analog switches | |
| 527 bcf analog_sw2_pressed | |
| 528 bcf analog_sw1_pressed | |
| 529 return ; Done. | |
| 530 get_analog_switches2: | |
| 531 btfsc adc_running ; ADC in use? | |
| 532 return ; Yes, return | |
| 0 | 533 |
| 582 | 534 movlw b'00001001' ; left justified |
| 535 movwf ADCON2 | |
| 536 ; movlw b'00000000' ; Vref+ = Vdd | |
| 537 clrf ADCON1 | |
| 538 movlw b'00100101' ; power on ADC, select AN9 | |
| 539 rcall wait_adc | |
| 540 banksel analog_counter | |
| 541 movff ADRESH,WREG | |
| 542 addwf analog_sw2_raw+0 | |
| 543 movlw .0 | |
| 544 addwfc analog_sw2_raw+1 | |
| 545 decfsz analog_counter,F ; continue averaging? | |
| 546 bra get_analog_switches2a ; Yes | |
| 547 ; Done. Compute average | |
| 548 bcf STATUS,C | |
| 549 rrcf analog_sw2_raw+1 | |
| 550 rrcf analog_sw2_raw+0 ; /2 | |
| 551 bcf STATUS,C | |
| 552 rrcf analog_sw2_raw+1 | |
| 553 rrcf analog_sw2_raw+0 ; /4 | |
| 554 bcf STATUS,C | |
| 555 rrcf analog_sw2_raw+1 | |
| 556 rrcf analog_sw2_raw+0 ; /8 | |
| 557 bcf STATUS,C | |
| 558 rrcf analog_sw2_raw+1 | |
| 559 rrcf analog_sw2_raw+0 ; /16 | |
| 560 movff analog_sw2_raw+0,analog_sw2 | |
| 561 clrf analog_sw2_raw+1 | |
| 562 clrf analog_sw2_raw+0 ; Reset average registers | |
| 563 ; movlw .16 | |
| 564 ; movwf analog_counter ; only once... | |
| 565 get_analog_switches2a: | |
| 566 banksel common | |
| 567 bcf analog_sw2_pressed | |
| 568 movff opt_cR_button_left,WREG ;20-100 | |
| 569 bcf STATUS,C | |
| 570 rrcf WREG ;/2 -> 10-50 | |
| 571 bcf STATUS,C | |
| 572 rrcf WREG ;/2 -> 5-25 | |
| 573 decf WREG,W ;-1 | |
| 574 decf WREG,W ;-1 | |
| 575 decf WREG,W ;-1 -> 2-22 | |
| 576 banksel analog_sw2 | |
| 577 btfss button_polarity,1 ;(1= normal, 0=inverted) | |
| 578 bra sw2_inverted | |
| 579 addwf analog_sw2,W ; average (~128) | |
| 580 cpfsgt ADRESH | |
| 581 bra get_analog_sw1 | |
| 582 banksel common | |
| 583 bsf analog_sw2_pressed ; Left button normal | |
| 584 bra get_analog_sw1 | |
| 475 | 585 sw2_inverted: |
| 582 | 586 subwf analog_sw2,W ; average (~128) |
| 587 cpfslt ADRESH | |
| 588 bra get_analog_sw1 | |
| 589 banksel common | |
| 590 bsf analog_sw2_pressed ; Left button inverted | |
| 448 | 591 get_analog_sw1: |
| 582 | 592 banksel common |
| 593 movlw b'00101001' ; power on ADC, select AN10 | |
| 594 rcall wait_adc | |
| 595 banksel analog_counter | |
| 596 movff ADRESH,WREG | |
| 597 addwf analog_sw1_raw+0 | |
| 598 movlw .0 | |
| 599 addwfc analog_sw1_raw+1 | |
| 600 tstfsz analog_counter ; continue averaging? | |
| 601 bra get_analog_switches1a ; Yes | |
| 602 ; Done. Compute average | |
| 603 bcf STATUS,C | |
| 604 rrcf analog_sw1_raw+1 | |
| 605 rrcf analog_sw1_raw+0 ; /2 | |
| 606 bcf STATUS,C | |
| 607 rrcf analog_sw1_raw+1 | |
| 608 rrcf analog_sw1_raw+0 ; /4 | |
| 609 bcf STATUS,C | |
| 610 rrcf analog_sw1_raw+1 | |
| 611 rrcf analog_sw1_raw+0 ; /8 | |
| 612 bcf STATUS,C | |
| 613 rrcf analog_sw1_raw+1 | |
| 614 rrcf analog_sw1_raw+0 ; /16 | |
| 615 movff analog_sw1_raw+0,analog_sw1 | |
| 616 clrf analog_sw1_raw+1 | |
| 617 clrf analog_sw1_raw+0 ; Reset average registers | |
| 618 movlw .16 | |
| 619 movwf analog_counter ; only once... | |
| 620 get_analog_switches1a: | |
| 621 banksel common | |
| 622 bcf analog_sw1_pressed | |
| 623 movff opt_cR_button_right,WREG ;20-100 | |
| 624 bcf STATUS,C | |
| 625 rrcf WREG ;/2 -> 10-50 | |
| 626 bcf STATUS,C | |
| 627 rrcf WREG ;/2 -> 5-25 | |
| 628 decf WREG,W ;-1 | |
| 629 decf WREG,W ;-1 | |
| 630 decf WREG,W ;-1 -> 2-22 | |
| 631 banksel analog_sw1 | |
| 632 btfss button_polarity,0 ;(1= normal, 0=inverted) | |
| 633 bra sw1_inverted | |
| 634 addwf analog_sw1,W ; average (~128) | |
| 635 cpfsgt ADRESH | |
| 636 bra get_analog_sw_done | |
| 637 banksel common | |
| 638 bsf analog_sw1_pressed ; right button normal | |
| 639 bra get_analog_sw_done | |
| 475 | 640 sw1_inverted: |
| 582 | 641 subwf analog_sw1,W ; average (~128) |
| 642 cpfslt ADRESH | |
| 643 bra get_analog_sw_done | |
| 644 banksel common | |
| 645 bsf analog_sw1_pressed ; right button inverted | |
| 448 | 646 get_analog_sw_done: |
| 582 | 647 banksel common |
| 648 movlw b'10001101' ; Restore to right justified | |
| 649 movwf ADCON2 | |
| 650 btfsc analog_sw1_pressed | |
| 651 return | |
| 652 btfsc analog_sw2_pressed | |
| 653 return | |
| 654 setf TMR1H ; No button pressed, enhance timer1 to overflow quickly | |
| 655 return | |
| 448 | 656 |
| 0 | 657 END |