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extern volatile uint16_t accNoisePeak[2];
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extern volatile uint16_t accNoisePeak[2];
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/*
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/*
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 * Air pressure.
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 * Air pressure.
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 * The sensor has a sensitivity of 45 mV/kPa.
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 * The sensor has a sensitivity of 45 mV/kPa.
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 * An approximate p(h) formula is = p(h[m])[kPa] = p_0 - 11.95 * 10^-3 * h
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 * p(h[m])[kPa] = 101.3 - 11.95 * 10^-3 * h
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 * 11.95 * 10^-3 * h = 101.3 - p[kPa]
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 * An approximate p(h) formula is = p(h[m])[Pa] = p_0 - 11.95 * 10^-3 * h
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 * h = (101.3 - p[kPa])/0.01195
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 * That is: dV = 45 mV * 11.95 * 10^-3 dh = 0.53775 mV / m.
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 * That is: dV = -45 mV * 11.95 * 10^-3 dh = -0.53775 mV / m.
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 * That is, with 38.02 * 1.024 / 3 steps per mV: -7 steps / m
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Display pressures
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4165 mV-->1084.7
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4090 mV-->1602.4   517.7
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3877 mV-->3107.8  1503.4
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4165 mV-->1419.1
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3503 mV-->208.1
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Diff.:   1211.0
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Calculated  Vout = 5V(.009P-0.095) --> 5V .009P = Vout + 5V 0.095 --> P = (Vout + 5V 0.095)/(5V 0.009)
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4165 mV = 5V(0.009P-0.095)  P = 103.11 kPa  h = -151.4m
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4090 mV = 5V(0.009P-0.095)  P = 101.44 kPa  h = -11.7m   139.7m
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3877 mV = 5V(0.009P-0.095)  P = 96.7   kPa  h = 385m     396.7m
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4165 mV = 5V(0.009P-0.095)  P = 103.11 kPa  h = -151.4m
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3503 mV = 5V(0.009P-0.095)  P = 88.4   kPa  h = 384m  Diff: 1079.5m
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Pressure at sea level: 101.3 kPa. voltage: 5V * (0.009P-0.095) = 4.0835V
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 * That is, with 1.024 / 3 steps per mV: 0.183552 steps / m
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This is OCR2 = 143.15 at 1.5V in --> simple pressure =
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*/
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 */
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#define AIRPRESSURE_SUMMATION_FACTOR 54
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#define AIRPRESSURE_SUMMATION_FACTOR 14
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#define AIRPRESSURE_FILTER 8
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#define AIRPRESSURE_FILTER 8
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// Minimum A/D value before a range change is performed.
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// Minimum A/D value before a range change is performed.
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#define MIN_RAWPRESSURE (200 * 2)
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#define MIN_RAWPRESSURE (200 * 2)
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// Maximum A/D value before a range change is performed.
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// Maximum A/D value before a range change is performed.
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#define MAX_RANGES_EXTRAPOLATION 240
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#define MAX_RANGES_EXTRAPOLATION 240
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#define PRESSURE_EXTRAPOLATION_COEFF 25L
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#define PRESSURE_EXTRAPOLATION_COEFF 25L
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#define AUTORANGE_WAIT_FACTOR 1
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#define AUTORANGE_WAIT_FACTOR 1
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#define ABS_ALTITUDE_OFFSET 108205
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extern volatile uint16_t simpleAirPressure;
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extern volatile uint16_t simpleAirPressure;
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/*
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/*
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 * At saturation, the filteredAirPressure may actually be (simulated) negative.
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 * At saturation, the filteredAirPressure may actually be (simulated) negative.