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Remove absolute pressure field as its not useful and confusing anywary

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Lorenz Meier
2014-08-24 11:49:45 +02:00
parent e09bc02c37
commit 127948f32f
4 changed files with 18 additions and 39 deletions
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src/modules/sensors/sensors.cpp
+7 -7
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@@ -1229,16 +1229,18 @@ Sensors::diff_pres_poll(struct sensor_combined_s &raw)
if (updated) {
orb_copy(ORB_ID(differential_pressure), _diff_pres_sub, &_diff_pres);
raw.differential_pressure_pa = _diff_pres.differential_pressure_pa;
raw.differential_pressure_pa = _diff_pres.differential_pressure_raw_pa;
raw.differential_pressure_timestamp = _diff_pres.timestamp;
raw.differential_pressure_filtered_pa = _diff_pres.differential_pressure_filtered_pa;
float air_temperature_celsius = (_diff_pres.temperature > -300.0f) ? _diff_pres.temperature : (raw.baro_temp_celcius - PCB_TEMP_ESTIMATE_DEG);
_airspeed.timestamp = _diff_pres.timestamp;
_airspeed.indicated_airspeed_m_s = calc_indicated_airspeed(_diff_pres.differential_pressure_filtered_pa);
_airspeed.true_airspeed_m_s = calc_true_airspeed(_diff_pres.differential_pressure_filtered_pa + raw.baro_pres_mbar * 1e2f,
raw.baro_pres_mbar * 1e2f, air_temperature_celsius);
/* don't risk to feed negative airspeed into the system */
_airspeed.indicated_airspeed_m_s = math::max(0.0f, calc_indicated_airspeed(_diff_pres.differential_pressure_filtered_pa));
_airspeed.true_airspeed_m_s = math::max(0.0f, calc_true_airspeed(_diff_pres.differential_pressure_filtered_pa + raw.baro_pres_mbar * 1e2f,
raw.baro_pres_mbar * 1e2f, air_temperature_celsius));
_airspeed.air_temperature_celsius = air_temperature_celsius;
/* announce the airspeed if needed, just publish else */
@@ -1457,12 +1459,10 @@ Sensors::adc_poll(struct sensor_combined_s &raw)
if (voltage > 0.4f && (_parameters.diff_pres_analog_scale > 0.0f)) {
float diff_pres_pa_raw = voltage * _parameters.diff_pres_analog_scale - _parameters.diff_pres_offset_pa;
float diff_pres_pa = (diff_pres_pa_raw > 0.0f) ? diff_pres_pa_raw : 0.0f;
_diff_pres.timestamp = t;
_diff_pres.differential_pressure_pa = diff_pres_pa;
_diff_pres.differential_pressure_raw_pa = diff_pres_pa_raw;
_diff_pres.differential_pressure_filtered_pa = (_diff_pres.differential_pressure_filtered_pa * 0.9f) + (diff_pres_pa * 0.1f);
_diff_pres.differential_pressure_filtered_pa = (_diff_pres.differential_pressure_filtered_pa * 0.9f) + (diff_pres_pa_raw * 0.1f);
_diff_pres.temperature = -1000.0f;
/* announce the airspeed if needed, just publish else */
src/modules/uORB/topics/differential_pressure.h
-1
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@@ -54,7 +54,6 @@
struct differential_pressure_s {
uint64_t timestamp; /**< Microseconds since system boot, needed to integrate */
uint64_t error_count; /**< Number of errors detected by driver */
float differential_pressure_pa; /**< Differential pressure reading */
float differential_pressure_raw_pa; /**< Raw differential pressure reading (may be negative) */
float differential_pressure_filtered_pa; /**< Low pass filtered differential pressure reading */
float max_differential_pressure_pa; /**< Maximum differential pressure reading */