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apply differential pressure calibration (SENS_DPRES_OFF) centrally

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- remove drv_airspeed.h and ioctls
This commit is contained in:
Daniel Agar
2022-04-26 08:39:19 -04:00
parent c6ab4c466e
commit 258f558fea
12 changed files with 29 additions and 226 deletions
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src/modules/sensors/sensors.cpp
+9 -21
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@@ -42,8 +42,8 @@
*/
#include <drivers/drv_adc.h>
#include <drivers/drv_airspeed.h>
#include <drivers/drv_hrt.h>
#include <drivers/drv_sensor.h>
#include <lib/airspeed/airspeed.h>
#include <lib/mathlib/mathlib.h>
#include <lib/parameters/param.h>
@@ -416,8 +416,13 @@ void Sensors::diff_pres_poll()
airspeed_s airspeed{};
airspeed.timestamp = diff_pres.timestamp;
// apply calibration offset (SENS_DPRES_OFF)
const float differential_pressure_raw_pa = diff_pres.differential_pressure_raw_pa - _parameters.diff_pres_offset_pa;
const float differential_pressure_filtered_pa = diff_pres.differential_pressure_filtered_pa -
_parameters.diff_pres_offset_pa;
/* push data into validator */
float airspeed_input[3] = { diff_pres.differential_pressure_raw_pa, diff_pres.temperature, 0.0f };
float airspeed_input[3] = { differential_pressure_raw_pa, diff_pres.temperature, 0.0f };
_airspeed_validator.put(airspeed.timestamp, airspeed_input, diff_pres.error_count, 100); // TODO: real priority?
@@ -446,7 +451,7 @@ void Sensors::diff_pres_poll()
airspeed.indicated_airspeed_m_s = calc_IAS_corrected((enum AIRSPEED_COMPENSATION_MODEL)
_parameters.air_cmodel,
smodel, _parameters.air_tube_length, _parameters.air_tube_diameter_mm,
diff_pres.differential_pressure_filtered_pa, air_data.baro_pressure_pa,
differential_pressure_filtered_pa, air_data.baro_pressure_pa,
air_temperature_celsius);
airspeed.true_airspeed_m_s = calc_TAS_from_CAS(airspeed.indicated_airspeed_m_s, air_data.baro_pressure_pa,
@@ -472,23 +477,6 @@ Sensors::parameter_update_poll(bool forced)
// update parameters from storage
parameters_update();
updateParams();
/* update airspeed scale */
int fd = px4_open(AIRSPEED0_DEVICE_PATH, 0);
/* this sensor is optional, abort without error */
if (fd >= 0) {
struct airspeed_scale airscale = {
_parameters.diff_pres_offset_pa,
1.0f,
};
if (OK != px4_ioctl(fd, AIRSPEEDIOCSSCALE, (long unsigned int)&airscale)) {
warn("WARNING: failed to set scale / offsets for airspeed sensor");
}
px4_close(fd);
}
}
}
@@ -530,7 +518,7 @@ void Sensors::adc_poll()
* vref. Those devices require no divider at all.
*/
if (voltage > 0.4f) {
const float diff_pres_pa_raw = voltage * _parameters.diff_pres_analog_scale - _parameters.diff_pres_offset_pa;
const float diff_pres_pa_raw = voltage * _parameters.diff_pres_analog_scale;
_diff_pres.timestamp = t;
_diff_pres.differential_pressure_raw_pa = diff_pres_pa_raw;