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/*
This program is free software : you can redistribute it and / or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation , either version 3 of the License , or
( at your option ) any later version .
This program is distributed in the hope that it will be useful ,
but WITHOUT ANY WARRANTY ; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE . See the
GNU General Public License for more details .
You should have received a copy of the GNU General Public License
along with this program . If not , see < http : //www.gnu.org/licenses/>.
*/
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/*
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* APM_Baro . cpp - barometer driver
*
*/
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# include "AP_Baro.h"
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# include <utility>
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# include <stdio.h>
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# include <GCS_MAVLink/GCS.h>
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# include <AP_Common/AP_Common.h>
# include <AP_HAL/AP_HAL.h>
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# include <AP_Math/AP_Math.h>
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# include <AP_BoardConfig/AP_BoardConfig.h>
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# include <AP_CANManager/AP_CANManager.h>
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# include <AP_Vehicle/AP_Vehicle_Type.h>
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# include <AP_HAL/I2CDevice.h>
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# include "AP_Baro_SITL.h"
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# include "AP_Baro_BMP085.h"
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# include "AP_Baro_BMP280.h"
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# include "AP_Baro_SPL06.h"
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# include "AP_Baro_KellerLD.h"
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# include "AP_Baro_MS5611.h"
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# include "AP_Baro_ICM20789.h"
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# include "AP_Baro_LPS2XH.h"
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# include "AP_Baro_FBM320.h"
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# include "AP_Baro_DPS280.h"
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# include "AP_Baro_BMP388.h"
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# include "AP_Baro_Dummy.h"
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# include "AP_Baro_UAVCAN.h"
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# include "AP_Baro_MSP.h"
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# include "AP_Baro_ExternalAHRS.h"
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# include "AP_Baro_ICP101XX.h"
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# include "AP_Baro_ICP201XX.h"
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# include <AP_Airspeed/AP_Airspeed.h>
# include <AP_AHRS/AP_AHRS.h>
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# include <AP_Arming/AP_Arming.h>
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# include <AP_Logger/AP_Logger.h>
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# define INTERNAL_TEMPERATURE_CLAMP 35.0f
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# ifndef HAL_BARO_FILTER_DEFAULT
# define HAL_BARO_FILTER_DEFAULT 0 // turned off by default
# endif
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# if !defined(HAL_PROBE_EXTERNAL_I2C_BAROS) && !HAL_MINIMIZE_FEATURES
# define HAL_PROBE_EXTERNAL_I2C_BAROS
# endif
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# ifndef HAL_BARO_PROBE_EXT_DEFAULT
# define HAL_BARO_PROBE_EXT_DEFAULT 0
# endif
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# ifndef HAL_BARO_EXTERNAL_BUS_DEFAULT
# define HAL_BARO_EXTERNAL_BUS_DEFAULT -1
# endif
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# ifdef HAL_BUILD_AP_PERIPH
# define HAL_BARO_ALLOW_INIT_NO_BARO
# endif
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extern const AP_HAL : : HAL & hal ;
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// table of user settable parameters
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const AP_Param : : GroupInfo AP_Baro : : var_info [ ] = {
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// NOTE: Index numbers 0 and 1 were for the old integer
// ground temperature and pressure
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# ifndef HAL_BUILD_AP_PERIPH
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// @Param: 1_GND_PRESS
// @DisplayName: Ground Pressure
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// @Description: calibrated ground pressure in Pascals
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// @Units: Pa
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// @Increment: 1
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// @ReadOnly: True
// @Volatile: True
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// @User: Advanced
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AP_GROUPINFO_FLAGS ( " 1_GND_PRESS " , 2 , AP_Baro , sensors [ 0 ] . ground_pressure , 0 , AP_PARAM_FLAG_INTERNAL_USE_ONLY ) ,
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// @Param: _GND_TEMP
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// @DisplayName: ground temperature
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// @Description: User provided ambient ground temperature in degrees Celsius. This is used to improve the calculation of the altitude the vehicle is at. This parameter is not persistent and will be reset to 0 every time the vehicle is rebooted. A value of 0 means use the internal measurement ambient temperature.
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// @Units: degC
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// @Increment: 1
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// @Volatile: True
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// @User: Advanced
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AP_GROUPINFO ( " _GND_TEMP " , 3 , AP_Baro , _user_ground_temperature , 0 ) ,
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// index 4 reserved for old AP_Int8 version in legacy FRAM
//AP_GROUPINFO("ALT_OFFSET", 4, AP_Baro, _alt_offset, 0),
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// @Param: _ALT_OFFSET
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// @DisplayName: altitude offset
// @Description: altitude offset in meters added to barometric altitude. This is used to allow for automatic adjustment of the base barometric altitude by a ground station equipped with a barometer. The value is added to the barometric altitude read by the aircraft. It is automatically reset to 0 when the barometer is calibrated on each reboot or when a preflight calibration is performed.
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// @Units: m
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// @Increment: 0.1
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// @User: Advanced
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AP_GROUPINFO ( " _ALT_OFFSET " , 5 , AP_Baro , _alt_offset , 0 ) ,
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// @Param: _PRIMARY
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// @DisplayName: Primary barometer
// @Description: This selects which barometer will be the primary if multiple barometers are found
// @Values: 0:FirstBaro,1:2ndBaro,2:3rdBaro
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// @User: Advanced
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AP_GROUPINFO ( " _PRIMARY " , 6 , AP_Baro , _primary_baro , 0 ) ,
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# endif // HAL_BUILD_AP_PERIPH
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// @Param: _EXT_BUS
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// @DisplayName: External baro bus
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// @Description: This selects the bus number for looking for an I2C barometer. When set to -1 it will probe all external i2c buses based on the GND_PROBE_EXT parameter.
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// @Values: -1:Disabled,0:Bus0,1:Bus1
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// @User: Advanced
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AP_GROUPINFO ( " _EXT_BUS " , 7 , AP_Baro , _ext_bus , HAL_BARO_EXTERNAL_BUS_DEFAULT ) ,
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// @Param{Sub}: _SPEC_GRAV
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// @DisplayName: Specific Gravity (For water depth measurement)
// @Description: This sets the specific gravity of the fluid when flying an underwater ROV.
// @Values: 1.0:Freshwater,1.024:Saltwater
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AP_GROUPINFO_FRAME ( " _SPEC_GRAV " , 8 , AP_Baro , _specific_gravity , 1.0 , AP_PARAM_FRAME_SUB ) ,
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# if BARO_MAX_INSTANCES > 1
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// @Param: 2_GND_PRESS
// @DisplayName: Ground Pressure
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// @Description: calibrated ground pressure in Pascals
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// @Units: Pa
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// @Increment: 1
// @ReadOnly: True
// @Volatile: True
// @User: Advanced
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AP_GROUPINFO_FLAGS ( " 2_GND_PRESS " , 9 , AP_Baro , sensors [ 1 ] . ground_pressure , 0 , AP_PARAM_FLAG_INTERNAL_USE_ONLY ) ,
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// Slot 10 used to be TEMP2
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# endif
# if BARO_MAX_INSTANCES > 2
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// @Param: 3_GND_PRESS
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// @DisplayName: Absolute Pressure
// @Description: calibrated ground pressure in Pascals
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// @Units: Pa
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// @Increment: 1
// @ReadOnly: True
// @Volatile: True
// @User: Advanced
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AP_GROUPINFO_FLAGS ( " 3_GND_PRESS " , 11 , AP_Baro , sensors [ 2 ] . ground_pressure , 0 , AP_PARAM_FLAG_INTERNAL_USE_ONLY ) ,
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// Slot 12 used to be TEMP3
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# endif
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// @Param: _FLTR_RNG
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// @DisplayName: Range in which sample is accepted
// @Description: This sets the range around the average value that new samples must be within to be accepted. This can help reduce the impact of noise on sensors that are on long I2C cables. The value is a percentage from the average value. A value of zero disables this filter.
// @Units: %
// @Range: 0 100
// @Increment: 1
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AP_GROUPINFO ( " _FLTR_RNG " , 13 , AP_Baro , _filter_range , HAL_BARO_FILTER_DEFAULT ) ,
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# if defined(HAL_PROBE_EXTERNAL_I2C_BAROS) || defined(AP_BARO_MSP_ENABLED)
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// @Param: _PROBE_EXT
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// @DisplayName: External barometers to probe
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// @Description: This sets which types of external i2c barometer to look for. It is a bitmask of barometer types. The I2C buses to probe is based on GND_EXT_BUS. If BARO_EXT_BUS is -1 then it will probe all external buses, otherwise it will probe just the bus number given in GND_EXT_BUS.
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// @Bitmask: 0:BMP085,1:BMP280,2:MS5611,3:MS5607,4:MS5637,5:FBM320,6:DPS280,7:LPS25H,8:Keller,9:MS5837,10:BMP388,11:SPL06,12:MSP
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// @User: Advanced
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AP_GROUPINFO ( " _PROBE_EXT " , 14 , AP_Baro , _baro_probe_ext , HAL_BARO_PROBE_EXT_DEFAULT ) ,
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# endif
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// @Param: 1_DEVID
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// @DisplayName: Baro ID
// @Description: Barometer sensor ID, taking into account its type, bus and instance
// @ReadOnly: True
// @User: Advanced
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AP_GROUPINFO_FLAGS ( " 1_DEVID " , 15 , AP_Baro , sensors [ 0 ] . bus_id , 0 , AP_PARAM_FLAG_INTERNAL_USE_ONLY ) ,
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# if BARO_MAX_INSTANCES > 1
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// @Param: 2_DEVID
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// @DisplayName: Baro ID2
// @Description: Barometer2 sensor ID, taking into account its type, bus and instance
// @ReadOnly: True
// @User: Advanced
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AP_GROUPINFO_FLAGS ( " 2_DEVID " , 16 , AP_Baro , sensors [ 1 ] . bus_id , 0 , AP_PARAM_FLAG_INTERNAL_USE_ONLY ) ,
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# endif
# if BARO_MAX_INSTANCES > 2
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// @Param: 3_DEVID
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// @DisplayName: Baro ID3
// @Description: Barometer3 sensor ID, taking into account its type, bus and instance
// @ReadOnly: True
// @User: Advanced
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AP_GROUPINFO_FLAGS ( " 3_DEVID " , 17 , AP_Baro , sensors [ 2 ] . bus_id , 0 , AP_PARAM_FLAG_INTERNAL_USE_ONLY ) ,
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# endif
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# if HAL_BARO_WIND_COMP_ENABLED
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// @Group: 1_WCF_
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// @Path: AP_Baro_Wind.cpp
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AP_SUBGROUPINFO ( sensors [ 0 ] . wind_coeff , " 1_WCF_ " , 18 , AP_Baro , WindCoeff ) ,
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# if BARO_MAX_INSTANCES > 1
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// @Group: 2_WCF_
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// @Path: AP_Baro_Wind.cpp
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AP_SUBGROUPINFO ( sensors [ 1 ] . wind_coeff , " 2_WCF_ " , 19 , AP_Baro , WindCoeff ) ,
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# endif
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# if BARO_MAX_INSTANCES > 2
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// @Group: 3_WCF_
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// @Path: AP_Baro_Wind.cpp
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AP_SUBGROUPINFO ( sensors [ 2 ] . wind_coeff , " 3_WCF_ " , 20 , AP_Baro , WindCoeff ) ,
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# endif
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# ifndef HAL_BUILD_AP_PERIPH
// @Param: _FIELD_ELV
// @DisplayName: field elevation
// @Description: User provided field elevation in meters. This is used to improve the calculation of the altitude the vehicle is at. This parameter is not persistent and will be reset to 0 every time the vehicle is rebooted. A value of 0 means no correction for takeoff height above sea level is performed.
// @Units: m
// @Increment: 0.1
// @Volatile: True
// @User: Advanced
AP_GROUPINFO ( " _FIELD_ELV " , 22 , AP_Baro , _field_elevation , 0 ) ,
# endif
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# endif
AP_GROUPEND
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} ;
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// singleton instance
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AP_Baro * AP_Baro : : _singleton ;
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# if HAL_GCS_ENABLED
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# define BARO_SEND_TEXT(severity, format, args...) gcs().send_text(severity, format, ##args)
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# else
# define BARO_SEND_TEXT(severity, format, args...)
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# endif
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/*
AP_Baro constructor
*/
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AP_Baro : : AP_Baro ( )
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{
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_singleton = this ;
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AP_Param : : setup_object_defaults ( this , var_info ) ;
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_field_elevation_active = _field_elevation ;
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}
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// calibrate the barometer. This must be called at least once before
// the altitude() or climb_rate() interfaces can be used
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void AP_Baro : : calibrate ( bool save )
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{
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// start by assuming all sensors are calibrated (for healthy() test)
for ( uint8_t i = 0 ; i < _num_sensors ; i + + ) {
sensors [ i ] . calibrated = true ;
sensors [ i ] . alt_ok = true ;
}
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if ( hal . util - > was_watchdog_reset ( ) ) {
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BARO_SEND_TEXT ( MAV_SEVERITY_INFO , " Baro: skipping calibration after WDG reset " ) ;
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return ;
}
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# if AP_SIM_BARO_ENABLED
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if ( AP : : sitl ( ) - > baro_count = = 0 ) {
return ;
}
# endif
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# ifdef HAL_BARO_ALLOW_INIT_NO_BARO
if ( _num_drivers = = 0 | | _num_sensors = = 0 | | drivers [ 0 ] = = nullptr ) {
BARO_SEND_TEXT ( MAV_SEVERITY_INFO , " Baro: no sensors found, skipping calibration " ) ;
return ;
}
# endif
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BARO_SEND_TEXT ( MAV_SEVERITY_INFO , " Calibrating barometer " ) ;
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// reset the altitude offset when we calibrate. The altitude
// offset is supposed to be for within a flight
_alt_offset . set_and_save ( 0 ) ;
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// let the barometer settle for a full second after startup
// the MS5611 reads quite a long way off for the first second,
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// leading to about 1m of error if we don't wait
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for ( uint8_t i = 0 ; i < 10 ; i + + ) {
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uint32_t tstart = AP_HAL : : millis ( ) ;
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do {
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update ( ) ;
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if ( AP_HAL : : millis ( ) - tstart > 500 ) {
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AP_BoardConfig : : config_error ( " Baro: unable to calibrate " ) ;
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}
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hal . scheduler - > delay ( 10 ) ;
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} while ( ! healthy ( ) ) ;
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hal . scheduler - > delay ( 100 ) ;
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}
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// now average over 5 values for the ground pressure settings
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float sum_pressure [ BARO_MAX_INSTANCES ] = { 0 } ;
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uint8_t count [ BARO_MAX_INSTANCES ] = { 0 } ;
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const uint8_t num_samples = 5 ;
for ( uint8_t c = 0 ; c < num_samples ; c + + ) {
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uint32_t tstart = AP_HAL : : millis ( ) ;
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do {
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update ( ) ;
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if ( AP_HAL : : millis ( ) - tstart > 500 ) {
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AP_BoardConfig : : config_error ( " Baro: unable to calibrate " ) ;
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}
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} while ( ! healthy ( ) ) ;
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for ( uint8_t i = 0 ; i < _num_sensors ; i + + ) {
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if ( healthy ( i ) ) {
sum_pressure [ i ] + = sensors [ i ] . pressure ;
count [ i ] + = 1 ;
}
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}
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hal . scheduler - > delay ( 100 ) ;
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}
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for ( uint8_t i = 0 ; i < _num_sensors ; i + + ) {
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if ( count [ i ] = = 0 ) {
sensors [ i ] . calibrated = false ;
} else {
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if ( save ) {
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float p0_sealevel = get_sealevel_pressure ( sum_pressure [ i ] / count [ i ] ) ;
sensors [ i ] . ground_pressure . set_and_save ( p0_sealevel ) ;
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}
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}
}
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_guessed_ground_temperature = get_external_temperature ( ) ;
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// panic if all sensors are not calibrated
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uint8_t num_calibrated = 0 ;
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for ( uint8_t i = 0 ; i < _num_sensors ; i + + ) {
if ( sensors [ i ] . calibrated ) {
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BARO_SEND_TEXT ( MAV_SEVERITY_INFO , " Barometer %u calibration complete " , i + 1 ) ;
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num_calibrated + + ;
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}
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}
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if ( num_calibrated ) {
return ;
}
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AP_BoardConfig : : config_error ( " Baro: all sensors uncalibrated " ) ;
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}
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/*
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update the barometer calibration
this updates the baro ground calibration to the current values . It
can be used before arming to keep the baro well calibrated
*/
void AP_Baro : : update_calibration ( )
{
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const uint32_t now = AP_HAL : : millis ( ) ;
const bool do_notify = now - _last_notify_ms > 10000 ;
if ( do_notify ) {
_last_notify_ms = now ;
}
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for ( uint8_t i = 0 ; i < _num_sensors ; i + + ) {
if ( healthy ( i ) ) {
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float corrected_pressure = get_sealevel_pressure ( get_pressure ( i ) + sensors [ i ] . p_correction ) ;
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sensors [ i ] . ground_pressure . set ( corrected_pressure ) ;
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}
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// don't notify the GCS too rapidly or we flood the link
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if ( do_notify ) {
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sensors [ i ] . ground_pressure . notify ( ) ;
}
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}
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// always update the guessed ground temp
_guessed_ground_temperature = get_external_temperature ( ) ;
// force EAS2TAS to recalculate
_EAS2TAS = 0 ;
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}
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// return altitude difference in meters between current pressure and a
// given base_pressure in Pascal
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float AP_Baro : : get_altitude_difference ( float base_pressure , float pressure ) const
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{
float ret ;
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float temp = C_TO_KELVIN ( get_ground_temperature ( ) ) ;
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float scaling = pressure / base_pressure ;
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// This is an exact calculation that is within +-2.5m of the standard
// atmosphere tables in the troposphere (up to 11,000 m amsl).
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ret = 153.8462f * temp * ( 1.0f - expf ( 0.190259f * logf ( scaling ) ) ) - _field_elevation_active ;
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return ret ;
}
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// return sea level pressure where in which the current measured pressure
// at field elevation returns the same altitude under the
// 1976 standard atmospheric model
float AP_Baro : : get_sealevel_pressure ( float pressure ) const
{
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float temp = C_TO_KELVIN ( get_ground_temperature ( ) ) ;
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float p0_sealevel ;
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// This is an exact calculation that is within +-2.5m of the standard
// atmosphere tables in the troposphere (up to 11,000 m amsl).
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p0_sealevel = 8.651154799255761e30 f * pressure * powF ( ( 769231.0f - ( 5000.0f * _field_elevation_active ) / temp ) , - 5.255993146184937f ) ;
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return p0_sealevel ;
}
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2013-06-26 05:32:37 -03:00
// return current scale factor that converts from equivalent to true airspeed
// valid for altitudes up to 10km AMSL
// assumes standard atmosphere lapse rate
float AP_Baro : : get_EAS2TAS ( void )
{
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float altitude = get_altitude ( ) ;
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if ( ( fabsf ( altitude - _last_altitude_EAS2TAS ) < 25.0f ) & & ! is_zero ( _EAS2TAS ) ) {
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// not enough change to require re-calculating
return _EAS2TAS ;
}
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float pressure = get_pressure ( ) ;
if ( is_zero ( pressure ) ) {
return 1.0f ;
}
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// only estimate lapse rate for the difference from the ground location
// provides a more consistent reading then trying to estimate a complete
// ISA model atmosphere
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float tempK = C_TO_KELVIN ( get_ground_temperature ( ) ) - ISA_LAPSE_RATE * altitude ;
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const float eas2tas_squared = SSL_AIR_DENSITY / ( pressure / ( ISA_GAS_CONSTANT * tempK ) ) ;
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if ( ! is_positive ( eas2tas_squared ) ) {
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return 1.0f ;
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}
_EAS2TAS = sqrtf ( eas2tas_squared ) ;
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_last_altitude_EAS2TAS = altitude ;
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return _EAS2TAS ;
}
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// return air density / sea level density - decreases as altitude climbs
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float AP_Baro : : get_air_density_ratio ( void )
{
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const float eas2tas = get_EAS2TAS ( ) ;
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if ( eas2tas > 0.0f ) {
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return 1.0f / ( sq ( eas2tas ) ) ;
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} else {
return 1.0f ;
}
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}
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// return current climb_rate estimate relative to time that calibrate()
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// was called. Returns climb rate in meters/s, positive means up
// note that this relies on read() being called regularly to get new data
float AP_Baro : : get_climb_rate ( void )
{
2012-07-06 02:11:22 -03:00
// we use a 7 point derivative filter on the climb rate. This seems
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// to produce somewhat reasonable results on real hardware
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return _climb_rate_filter . slope ( ) * 1.0e3 f ;
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}
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2017-03-24 01:58:53 -03:00
// returns the ground temperature in degrees C, selecting either a user
// provided one, or the internal estimate
float AP_Baro : : get_ground_temperature ( void ) const
{
if ( is_zero ( _user_ground_temperature ) ) {
return _guessed_ground_temperature ;
} else {
return _user_ground_temperature ;
}
}
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/*
set external temperature to be used for calibration ( degrees C )
*/
void AP_Baro : : set_external_temperature ( float temperature )
{
_external_temperature = temperature ;
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_last_external_temperature_ms = AP_HAL : : millis ( ) ;
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}
/*
get the temperature in degrees C to be used for calibration purposes
*/
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float AP_Baro : : get_external_temperature ( const uint8_t instance ) const
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{
// if we have a recent external temperature then use it
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if ( _last_external_temperature_ms ! = 0 & & AP_HAL : : millis ( ) - _last_external_temperature_ms < 10000 ) {
2014-11-11 20:26:28 -04:00
return _external_temperature ;
}
2018-11-16 12:16:50 -04:00
2019-07-26 03:55:52 -03:00
# ifndef HAL_BUILD_AP_PERIPH
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# if AP_AIRSPEED_ENABLED
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// if we don't have an external temperature then try to use temperature
// from the airspeed sensor
AP_Airspeed * airspeed = AP_Airspeed : : get_singleton ( ) ;
if ( airspeed ! = nullptr ) {
float temperature ;
if ( airspeed - > healthy ( ) & & airspeed - > get_temperature ( temperature ) ) {
return temperature ;
}
}
2021-11-01 05:09:03 -03:00
# endif
2019-07-26 03:55:52 -03:00
# endif
2018-11-16 12:16:50 -04:00
// if we don't have an external temperature and airspeed temperature
// then use the minimum of the barometer temperature and 35 degrees C.
// The reason for not just using the baro temperature is it tends to read high,
2014-11-11 20:26:28 -04:00
// often 30 degrees above the actual temperature. That means the
2017-03-24 01:58:53 -03:00
// EAS2TAS tends to be off by quite a large margin, as well as
// the calculation of altitude difference betweeen two pressures
// reporting a high temperature will cause the aircraft to
// estimate itself as flying higher then it actually is.
return MIN ( get_temperature ( instance ) , INTERNAL_TEMPERATURE_CLAMP ) ;
2014-11-11 20:26:28 -04:00
}
2014-10-19 16:22:51 -03:00
2016-11-24 20:59:14 -04:00
bool AP_Baro : : _add_backend ( AP_Baro_Backend * backend )
{
if ( ! backend ) {
return false ;
}
if ( _num_drivers > = BARO_MAX_DRIVERS ) {
AP_HAL : : panic ( " Too many barometer drivers " ) ;
}
drivers [ _num_drivers + + ] = backend ;
return true ;
}
/*
macro to add a backend with check for too many sensors
We don ' t try to start more than the maximum allowed
*/
# define ADD_BACKEND(backend) \
do { _add_backend ( backend ) ; \
if ( _num_drivers = = BARO_MAX_DRIVERS | | \
_num_sensors = = BARO_MAX_INSTANCES ) { \
return ; \
} \
} while ( 0 )
2014-10-19 16:22:51 -03:00
/*
initialise the barometer object , loading backend drivers
*/
void AP_Baro : : init ( void )
{
2020-09-03 19:09:52 -03:00
init_done = true ;
2022-01-27 15:02:53 -04:00
// always set field elvation to zero on reboot in the case user
// fails to update. TBD automate sanity checking error bounds on
// on previously saved value at new location etc.
if ( ! is_zero ( _field_elevation ) ) {
_field_elevation . set_and_save ( 0.0f ) ;
_field_elevation . notify ( ) ;
2017-03-24 01:58:53 -03:00
}
2020-07-18 04:12:41 -03:00
// zero bus IDs before probing
for ( uint8_t i = 0 ; i < BARO_MAX_INSTANCES ; i + + ) {
sensors [ i ] . bus_id . set ( 0 ) ;
}
2021-10-29 22:15:47 -03:00
# if AP_SIM_BARO_ENABLED
SITL : : SIM * sitl = AP : : sitl ( ) ;
if ( sitl = = nullptr ) {
AP_HAL : : panic ( " No SITL pointer " ) ;
}
for ( uint8_t i = 0 ; i < sitl - > baro_count ; i + + ) {
ADD_BACKEND ( new AP_Baro_SITL ( * this ) ) ;
}
# endif
2022-01-26 23:58:56 -04:00
# if AP_BARO_UAVCAN_ENABLED
2018-07-20 06:44:55 -03:00
// Detect UAVCAN Modules, try as many times as there are driver slots
for ( uint8_t i = 0 ; i < BARO_MAX_DRIVERS ; i + + ) {
ADD_BACKEND ( AP_Baro_UAVCAN : : probe ( * this ) ) ;
}
2017-05-06 06:13:05 -03:00
# endif
2022-01-26 23:58:56 -04:00
# if AP_BARO_EXTERNALAHRS_ENABLED
2021-08-10 19:30:52 -03:00
const int8_t serial_port = AP : : externalAHRS ( ) . get_port ( ) ;
if ( serial_port > = 0 ) {
2020-12-27 22:05:33 -04:00
ADD_BACKEND ( new AP_Baro_ExternalAHRS ( * this , serial_port ) ) ;
}
# endif
2019-09-01 21:02:24 -03:00
// macro for use by HAL_INS_PROBE_LIST
2019-09-01 19:13:37 -03:00
# define GET_I2C_DEVICE(bus, address) hal.i2c_mgr->get_device(bus, address)
2021-10-29 22:15:47 -03:00
# if AP_SIM_BARO_ENABLED
2022-01-26 23:58:56 -04:00
# if CONFIG_HAL_BOARD == HAL_BOARD_SITL && AP_BARO_MS56XX_ENABLED
2021-10-29 22:15:47 -03:00
ADD_BACKEND ( AP_Baro_MS56XX : : probe ( * this ,
std : : move ( GET_I2C_DEVICE ( _ext_bus , HAL_BARO_MS5611_I2C_ADDR ) ) ) ) ;
# endif
// do not probe for other drivers when using simulation:
return ;
# endif
2019-05-29 08:00:57 -03:00
# if defined(HAL_BARO_PROBE_LIST)
// probe list from BARO lines in hwdef.dat
HAL_BARO_PROBE_LIST ;
# elif AP_FEATURE_BOARD_DETECT
2016-12-20 08:21:20 -04:00
switch ( AP_BoardConfig : : get_board_type ( ) ) {
case AP_BoardConfig : : PX4_BOARD_PX4V1 :
2022-01-26 23:58:56 -04:00
# if AP_BARO_MS56XX_ENABLED && defined(HAL_BARO_MS5611_I2C_BUS)
2016-11-24 20:59:14 -04:00
ADD_BACKEND ( AP_Baro_MS56XX : : probe ( * this ,
2019-09-01 21:02:24 -03:00
std : : move ( GET_I2C_DEVICE ( HAL_BARO_MS5611_I2C_BUS , HAL_BARO_MS5611_I2C_ADDR ) ) ) ) ;
2016-11-08 20:34:16 -04:00
# endif
2016-12-20 08:21:20 -04:00
break ;
case AP_BoardConfig : : PX4_BOARD_PIXHAWK :
case AP_BoardConfig : : PX4_BOARD_PHMINI :
2017-02-28 21:42:15 -04:00
case AP_BoardConfig : : PX4_BOARD_AUAV21 :
2016-12-20 08:21:20 -04:00
case AP_BoardConfig : : PX4_BOARD_PH2SLIM :
2017-07-15 02:12:39 -03:00
case AP_BoardConfig : : PX4_BOARD_PIXHAWK_PRO :
2022-01-26 23:58:56 -04:00
# if AP_BARO_MS56XX_ENABLED
2016-11-24 20:59:14 -04:00
ADD_BACKEND ( AP_Baro_MS56XX : : probe ( * this ,
std : : move ( hal . spi - > get_device ( HAL_BARO_MS5611_NAME ) ) ) ) ;
2022-01-26 23:58:56 -04:00
# endif
2016-12-20 08:21:20 -04:00
break ;
case AP_BoardConfig : : PX4_BOARD_PIXHAWK2 :
2018-02-14 01:41:00 -04:00
case AP_BoardConfig : : PX4_BOARD_SP01 :
2022-01-26 23:58:56 -04:00
# if AP_BARO_MS56XX_ENABLED
2016-11-24 20:59:14 -04:00
ADD_BACKEND ( AP_Baro_MS56XX : : probe ( * this ,
std : : move ( hal . spi - > get_device ( HAL_BARO_MS5611_SPI_EXT_NAME ) ) ) ) ;
ADD_BACKEND ( AP_Baro_MS56XX : : probe ( * this ,
std : : move ( hal . spi - > get_device ( HAL_BARO_MS5611_NAME ) ) ) ) ;
2022-01-26 23:58:56 -04:00
# endif
2016-12-20 08:21:20 -04:00
break ;
2018-01-11 17:26:04 -04:00
case AP_BoardConfig : : PX4_BOARD_MINDPXV2 :
2022-01-26 23:58:56 -04:00
# if AP_BARO_MS56XX_ENABLED
2018-01-11 17:26:04 -04:00
ADD_BACKEND ( AP_Baro_MS56XX : : probe ( * this ,
std : : move ( hal . spi - > get_device ( HAL_BARO_MS5611_NAME ) ) ) ) ;
2022-01-26 23:58:56 -04:00
# endif
2018-01-11 17:26:04 -04:00
break ;
2018-07-20 06:44:55 -03:00
2017-02-03 20:52:55 -04:00
case AP_BoardConfig : : PX4_BOARD_AEROFC :
2022-01-26 23:58:56 -04:00
# if AP_BARO_MS56XX_ENABLED
2017-02-12 22:51:46 -04:00
# ifdef HAL_BARO_MS5607_I2C_BUS
2017-02-03 20:52:55 -04:00
ADD_BACKEND ( AP_Baro_MS56XX : : probe ( * this ,
2019-09-01 21:02:24 -03:00
std : : move ( GET_I2C_DEVICE ( HAL_BARO_MS5607_I2C_BUS , HAL_BARO_MS5607_I2C_ADDR ) ) ,
2017-02-03 20:52:55 -04:00
AP_Baro_MS56XX : : BARO_MS5607 ) ) ;
2017-02-12 22:51:46 -04:00
# endif
2022-01-26 23:58:56 -04:00
# endif // AP_BARO_MS56XX_ENABLED
2017-02-03 20:52:55 -04:00
break ;
2018-02-03 09:55:26 -04:00
case AP_BoardConfig : : VRX_BOARD_BRAIN54 :
2022-01-26 23:58:56 -04:00
# if AP_BARO_MS56XX_ENABLED
2018-02-03 09:55:26 -04:00
ADD_BACKEND ( AP_Baro_MS56XX : : probe ( * this ,
std : : move ( hal . spi - > get_device ( HAL_BARO_MS5611_NAME ) ) ) ) ;
ADD_BACKEND ( AP_Baro_MS56XX : : probe ( * this ,
std : : move ( hal . spi - > get_device ( HAL_BARO_MS5611_SPI_EXT_NAME ) ) ) ) ;
# ifdef HAL_BARO_MS5611_SPI_IMU_NAME
ADD_BACKEND ( AP_Baro_MS56XX : : probe ( * this ,
std : : move ( hal . spi - > get_device ( HAL_BARO_MS5611_SPI_IMU_NAME ) ) ) ) ;
# endif
2022-01-26 23:58:56 -04:00
# endif // AP_BARO_MS56XX_ENABLED
2018-02-03 09:55:26 -04:00
break ;
case AP_BoardConfig : : VRX_BOARD_BRAIN51 :
case AP_BoardConfig : : VRX_BOARD_BRAIN52 :
case AP_BoardConfig : : VRX_BOARD_BRAIN52E :
case AP_BoardConfig : : VRX_BOARD_CORE10 :
case AP_BoardConfig : : VRX_BOARD_UBRAIN51 :
case AP_BoardConfig : : VRX_BOARD_UBRAIN52 :
2022-01-26 23:58:56 -04:00
# if AP_BARO_MS56XX_ENABLED
2018-02-03 09:55:26 -04:00
ADD_BACKEND ( AP_Baro_MS56XX : : probe ( * this ,
std : : move ( hal . spi - > get_device ( HAL_BARO_MS5611_NAME ) ) ) ) ;
2022-01-26 23:58:56 -04:00
# endif // AP_BARO_MS56XX_ENABLED
2018-02-03 09:55:26 -04:00
break ;
2017-06-21 04:03:03 -03:00
case AP_BoardConfig : : PX4_BOARD_PCNC1 :
2022-01-26 23:58:56 -04:00
# if AP_BARO_ICM20789_ENABLED
2017-06-21 04:03:03 -03:00
ADD_BACKEND ( AP_Baro_ICM20789 : : probe ( * this ,
2019-09-01 21:02:24 -03:00
std : : move ( GET_I2C_DEVICE ( 1 , 0x63 ) ) ,
2018-01-07 18:57:57 -04:00
std : : move ( hal . spi - > get_device ( HAL_INS_MPU60x0_NAME ) ) ) ) ;
2022-01-26 23:58:56 -04:00
# endif
2017-06-21 04:03:03 -03:00
break ;
2018-05-29 08:43:12 -03:00
case AP_BoardConfig : : PX4_BOARD_FMUV5 :
2019-02-06 17:09:24 -04:00
case AP_BoardConfig : : PX4_BOARD_FMUV6 :
2022-01-26 23:58:56 -04:00
# if AP_BARO_MS56XX_ENABLED
2018-05-29 08:43:12 -03:00
ADD_BACKEND ( AP_Baro_MS56XX : : probe ( * this ,
std : : move ( hal . spi - > get_device ( HAL_BARO_MS5611_NAME ) ) ) ) ;
2022-01-26 23:58:56 -04:00
# endif
2018-05-29 08:43:12 -03:00
break ;
2018-07-20 06:44:55 -03:00
2016-12-20 08:21:20 -04:00
default :
break ;
2016-11-01 07:29:18 -03:00
}
2018-02-15 00:00:23 -04:00
# elif HAL_BARO_DEFAULT == HAL_BARO_LPS25H_IMU_I2C
ADD_BACKEND ( AP_Baro_LPS2XH : : probe_InvensenseIMU ( * this ,
2019-09-01 21:02:24 -03:00
std : : move ( GET_I2C_DEVICE ( HAL_BARO_LPS25H_I2C_BUS , HAL_BARO_LPS25H_I2C_ADDR ) ) ,
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HAL_BARO_LPS25H_I2C_IMU_ADDR ) ) ;
2018-01-19 01:06:34 -04:00
# elif HAL_BARO_DEFAULT == HAL_BARO_20789_I2C_I2C
2018-07-20 06:44:55 -03:00
ADD_BACKEND ( AP_Baro_ICM20789 : : probe ( * this ,
2019-09-01 21:02:24 -03:00
std : : move ( GET_I2C_DEVICE ( HAL_BARO_20789_I2C_BUS , HAL_BARO_20789_I2C_ADDR_PRESS ) ) ,
std : : move ( GET_I2C_DEVICE ( HAL_BARO_20789_I2C_BUS , HAL_BARO_20789_I2C_ADDR_ICM ) ) ) ) ;
2018-01-19 01:06:34 -04:00
# elif HAL_BARO_DEFAULT == HAL_BARO_20789_I2C_SPI
2018-07-20 06:44:55 -03:00
ADD_BACKEND ( AP_Baro_ICM20789 : : probe ( * this ,
2019-09-01 21:02:24 -03:00
std : : move ( GET_I2C_DEVICE ( HAL_BARO_20789_I2C_BUS , HAL_BARO_20789_I2C_ADDR_PRESS ) ) ,
2018-07-20 06:44:55 -03:00
std : : move ( hal . spi - > get_device ( " icm20789 " ) ) ) ) ;
2015-09-28 14:32:21 -03:00
# endif
2016-01-04 09:59:19 -04:00
2016-12-01 05:59:50 -04:00
// can optionally have baro on I2C too
if ( _ext_bus > = 0 ) {
2017-02-03 00:18:25 -04:00
# if APM_BUILD_TYPE(APM_BUILD_ArduSub)
2022-01-26 23:58:56 -04:00
# if AP_BARO_MS56XX_ENABLED
2017-02-03 00:18:25 -04:00
ADD_BACKEND ( AP_Baro_MS56XX : : probe ( * this ,
2019-09-01 21:02:24 -03:00
std : : move ( GET_I2C_DEVICE ( _ext_bus , HAL_BARO_MS5837_I2C_ADDR ) ) , AP_Baro_MS56XX : : BARO_MS5837 ) ) ;
2022-01-26 23:58:56 -04:00
# endif
# if AP_BARO_KELLERLD_ENABLED
2017-06-16 21:45:17 -03:00
ADD_BACKEND ( AP_Baro_KellerLD : : probe ( * this ,
2019-09-01 21:02:24 -03:00
std : : move ( GET_I2C_DEVICE ( _ext_bus , HAL_BARO_KELLERLD_I2C_ADDR ) ) ) ) ;
2022-01-26 23:58:56 -04:00
# endif
2017-02-03 00:18:25 -04:00
# else
2022-01-26 23:58:56 -04:00
# if AP_BARO_MS56XX_ENABLED
2016-12-01 05:59:50 -04:00
ADD_BACKEND ( AP_Baro_MS56XX : : probe ( * this ,
2019-09-01 21:02:24 -03:00
std : : move ( GET_I2C_DEVICE ( _ext_bus , HAL_BARO_MS5611_I2C_ADDR ) ) ) ) ;
2022-01-26 23:58:56 -04:00
# endif
2017-02-03 00:18:25 -04:00
# endif
2016-12-01 05:59:50 -04:00
}
2017-04-02 11:56:03 -03:00
2018-08-22 21:42:06 -03:00
# ifdef HAL_PROBE_EXTERNAL_I2C_BAROS
_probe_i2c_barometers ( ) ;
# endif
2018-07-20 06:44:55 -03:00
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# if AP_BARO_MSP_ENABLED
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if ( ( _baro_probe_ext . get ( ) & PROBE_MSP ) & & msp_instance_mask = = 0 ) {
// allow for late addition of MSP sensor
msp_instance_mask | = 1 ;
}
for ( uint8_t i = 0 ; i < 8 ; i + + ) {
if ( msp_instance_mask & ( 1U < < i ) ) {
ADD_BACKEND ( new AP_Baro_MSP ( * this , i ) ) ;
}
}
# endif
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# if !defined(HAL_BARO_ALLOW_INIT_NO_BARO) // most boards requires external baro
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# if AP_SIM_BARO_ENABLED
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if ( sitl - > baro_count = = 0 ) {
return ;
}
# endif
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if ( _num_drivers = = 0 | | _num_sensors = = 0 | | drivers [ 0 ] = = nullptr ) {
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AP_BoardConfig : : config_error ( " Baro: unable to initialise driver " ) ;
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}
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# endif
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# ifdef HAL_BUILD_AP_PERIPH
// AP_Periph always is set calibrated. We only want the pressure,
// so ground calibration is unnecessary
for ( uint8_t i = 0 ; i < _num_sensors ; i + + ) {
sensors [ i ] . calibrated = true ;
sensors [ i ] . alt_ok = true ;
}
# endif
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}
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/*
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probe all the i2c barometers enabled with BARO_PROBE_EXT . This is
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used on boards without a builtin barometer
*/
void AP_Baro : : _probe_i2c_barometers ( void )
{
uint32_t probe = _baro_probe_ext . get ( ) ;
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( void ) probe ; // may be unused if most baros compiled out
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uint32_t mask = hal . i2c_mgr - > get_bus_mask_external ( ) ;
if ( AP_BoardConfig : : get_board_type ( ) = = AP_BoardConfig : : PX4_BOARD_PIXHAWK2 ) {
// for the purpose of baro probing, treat CubeBlack internal i2c as external. It has
// no internal i2c baros, so this is safe
mask | = hal . i2c_mgr - > get_bus_mask_internal ( ) ;
}
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// if the user has set GND_EXT_BUS then probe the bus given by that parameter
int8_t ext_bus = _ext_bus ;
if ( ext_bus > = 0 ) {
mask = 1U < < ( uint8_t ) ext_bus ;
}
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static const struct BaroProbeSpec {
uint32_t bit ;
AP_Baro_Backend * ( * probefn ) ( AP_Baro & , AP_HAL : : OwnPtr < AP_HAL : : Device > ) ;
uint8_t addr ;
} baroprobespec [ ] {
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# if AP_BARO_BMP085_ENABLED
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{ PROBE_BMP085 , AP_Baro_BMP085 : : probe , HAL_BARO_BMP085_I2C_ADDR } ,
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# endif
# if AP_BARO_BMP280_ENABLED
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{ PROBE_BMP280 , AP_Baro_BMP280 : : probe , HAL_BARO_BMP280_I2C_ADDR } ,
{ PROBE_BMP280 , AP_Baro_BMP280 : : probe , HAL_BARO_BMP280_I2C_ADDR2 } ,
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# endif
# if AP_BARO_SPL06_ENABLED
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{ PROBE_SPL06 , AP_Baro_SPL06 : : probe , HAL_BARO_SPL06_I2C_ADDR } ,
{ PROBE_SPL06 , AP_Baro_SPL06 : : probe , HAL_BARO_SPL06_I2C_ADDR2 } ,
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# endif
# if AP_BARO_BMP388_ENABLED
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{ PROBE_BMP388 , AP_Baro_BMP388 : : probe , HAL_BARO_BMP388_I2C_ADDR } ,
{ PROBE_BMP388 , AP_Baro_BMP388 : : probe , HAL_BARO_BMP388_I2C_ADDR2 } ,
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# endif
# if AP_BARO_MS56XX_ENABLED
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{ PROBE_MS5611 , AP_Baro_MS56XX : : probe_5611 , HAL_BARO_MS5611_I2C_ADDR } ,
{ PROBE_MS5611 , AP_Baro_MS56XX : : probe_5611 , HAL_BARO_MS5611_I2C_ADDR2 } ,
{ PROBE_MS5607 , AP_Baro_MS56XX : : probe_5607 , HAL_BARO_MS5607_I2C_ADDR } ,
{ PROBE_MS5637 , AP_Baro_MS56XX : : probe_5637 , HAL_BARO_MS5637_I2C_ADDR } ,
# endif
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# if AP_BARO_FBM320_ENABLED
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{ PROBE_FBM320 , AP_Baro_FBM320 : : probe , HAL_BARO_FBM320_I2C_ADDR } ,
{ PROBE_FBM320 , AP_Baro_FBM320 : : probe , HAL_BARO_FBM320_I2C_ADDR2 } ,
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# endif
# if AP_BARO_DPS280_ENABLED
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{ PROBE_DPS280 , AP_Baro_DPS280 : : probe_280 , HAL_BARO_DPS280_I2C_ADDR } ,
{ PROBE_DPS280 , AP_Baro_DPS280 : : probe_280 , HAL_BARO_DPS280_I2C_ADDR2 } ,
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# endif
# if AP_BARO_LPS2XH_ENABLED
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{ PROBE_LPS25H , AP_Baro_LPS2XH : : probe , HAL_BARO_LPS25H_I2C_ADDR } ,
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# endif
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# if APM_BUILD_TYPE(APM_BUILD_ArduSub)
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# if AP_BARO_KELLERLD_ENABLED
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{ PROBE_KELLER , AP_Baro_KellerLD : : probe , HAL_BARO_KELLERLD_I2C_ADDR } ,
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# endif
# if AP_BARO_MS56XX_ENABLED
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{ PROBE_MS5837 , AP_Baro_MS56XX : : probe_5837 , HAL_BARO_MS5837_I2C_ADDR } ,
# endif
# endif // APM_BUILD_TYPE(APM_BUILD_ArduSub)
} ;
for ( const auto & spec : baroprobespec ) {
if ( ! ( probe & spec . bit ) ) {
// not in mask to be probed for
continue ;
}
FOREACH_I2C_MASK ( i , mask ) {
ADD_BACKEND ( spec . probefn ( * this , std : : move ( GET_I2C_DEVICE ( i , spec . addr ) ) ) ) ;
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}
}
}
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bool AP_Baro : : should_log ( ) const
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{
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AP_Logger * logger = AP_Logger : : get_singleton ( ) ;
if ( logger = = nullptr ) {
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return false ;
}
if ( _log_baro_bit = = ( uint32_t ) - 1 ) {
return false ;
}
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if ( ! logger - > should_log ( _log_baro_bit ) ) {
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return false ;
}
return true ;
}
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/*
call update on all drivers
*/
void AP_Baro : : update ( void )
{
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WITH_SEMAPHORE ( _rsem ) ;
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if ( fabsf ( _alt_offset - _alt_offset_active ) > 0.01f ) {
// If there's more than 1cm difference then slowly slew to it via LPF.
// The EKF does not like step inputs so this keeps it happy.
_alt_offset_active = ( 0.95f * _alt_offset_active ) + ( 0.05f * _alt_offset ) ;
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} else {
_alt_offset_active = _alt_offset ;
}
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# if HAL_LOGGING_ENABLED
bool old_primary_healthy = sensors [ _primary ] . healthy ;
# endif
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for ( uint8_t i = 0 ; i < _num_drivers ; i + + ) {
drivers [ i ] - > backend_update ( i ) ;
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}
for ( uint8_t i = 0 ; i < _num_sensors ; i + + ) {
if ( sensors [ i ] . healthy ) {
// update altitude calculation
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float ground_pressure = sensors [ i ] . ground_pressure ;
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if ( ! is_positive ( ground_pressure ) | | isnan ( ground_pressure ) | | isinf ( ground_pressure ) ) {
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sensors [ i ] . ground_pressure = sensors [ i ] . pressure ;
}
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float altitude = sensors [ i ] . altitude ;
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float corrected_pressure = sensors [ i ] . pressure + sensors [ i ] . p_correction ;
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if ( sensors [ i ] . type = = BARO_TYPE_AIR ) {
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# if HAL_BARO_WIND_COMP_ENABLED
corrected_pressure - = wind_pressure_correction ( i ) ;
# endif
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altitude = get_altitude_difference ( sensors [ i ] . ground_pressure , corrected_pressure ) ;
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} else if ( sensors [ i ] . type = = BARO_TYPE_WATER ) {
//101325Pa is sea level air pressure, 9800 Pascal/ m depth in water.
//No temperature or depth compensation for density of water.
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altitude = ( sensors [ i ] . ground_pressure - corrected_pressure ) / 9800.0f / _specific_gravity ;
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}
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// sanity check altitude
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sensors [ i ] . alt_ok = ! ( isnan ( altitude ) | | isinf ( altitude ) ) ;
if ( sensors [ i ] . alt_ok ) {
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sensors [ i ] . altitude = altitude + _alt_offset_active ;
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}
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}
}
// ensure the climb rate filter is updated
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if ( healthy ( ) ) {
_climb_rate_filter . update ( get_altitude ( ) , get_last_update ( ) ) ;
}
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// choose primary sensor
if ( _primary_baro > = 0 & & _primary_baro < _num_sensors & & healthy ( _primary_baro ) ) {
_primary = _primary_baro ;
} else {
_primary = 0 ;
for ( uint8_t i = 0 ; i < _num_sensors ; i + + ) {
if ( healthy ( i ) ) {
_primary = i ;
break ;
}
}
}
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# ifndef HAL_BUILD_AP_PERIPH
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const uint32_t now_ms = AP_HAL : : millis ( ) ;
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if ( now_ms - _field_elevation_last_ms > = 1000 & & fabsf ( _field_elevation_active - _field_elevation ) > 1.0 ) {
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if ( ! AP : : arming ( ) . is_armed ( ) ) {
_field_elevation_last_ms = now_ms ;
_field_elevation_active = _field_elevation ;
AP : : ahrs ( ) . resetHeightDatum ( ) ;
update_calibration ( ) ;
BARO_SEND_TEXT ( MAV_SEVERITY_INFO , " Barometer Field Elevation Set: %.0fm " , _field_elevation_active ) ;
}
else {
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_field_elevation . set ( _field_elevation_active ) ;
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_field_elevation . notify ( ) ;
BARO_SEND_TEXT ( MAV_SEVERITY_ALERT , " Failed to Set Field Elevation: Armed " ) ;
}
}
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# endif
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// logging
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# if HAL_LOGGING_ENABLED
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if ( should_log ( ) ) {
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Write_Baro ( ) ;
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}
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# define MASK_LOG_ANY 0xFFFF
// log sensor healthy state change:
if ( sensors [ _primary ] . healthy ! = old_primary_healthy ) {
if ( AP : : logger ( ) . should_log ( MASK_LOG_ANY ) ) {
const LogErrorCode code = sensors [ _primary ] . healthy ? LogErrorCode : : ERROR_RESOLVED : LogErrorCode : : UNHEALTHY ;
AP : : logger ( ) . Write_Error ( LogErrorSubsystem : : BARO , code ) ;
}
}
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# endif
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}
/*
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call accumulate on all drivers
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*/
void AP_Baro : : accumulate ( void )
{
for ( uint8_t i = 0 ; i < _num_drivers ; i + + ) {
drivers [ i ] - > accumulate ( ) ;
}
}
/* register a new sensor, claiming a sensor slot. If we are out of
slots it will panic
*/
uint8_t AP_Baro : : register_sensor ( void )
{
if ( _num_sensors > = BARO_MAX_INSTANCES ) {
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AP_HAL : : panic ( " Too many barometers " ) ;
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}
return _num_sensors + + ;
}
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/*
check if all barometers are healthy
*/
bool AP_Baro : : all_healthy ( void ) const
{
for ( uint8_t i = 0 ; i < _num_sensors ; i + + ) {
if ( ! healthy ( i ) ) {
return false ;
}
}
return _num_sensors > 0 ;
}
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// set a pressure correction from AP_TempCalibration
void AP_Baro : : set_pressure_correction ( uint8_t instance , float p_correction )
{
if ( instance < _num_sensors ) {
sensors [ instance ] . p_correction = p_correction ;
}
}
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# if AP_BARO_MSP_ENABLED
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/*
handle MSP barometer data
*/
void AP_Baro : : handle_msp ( const MSP : : msp_baro_data_message_t & pkt )
{
if ( pkt . instance > 7 ) {
return ;
}
if ( ! init_done ) {
msp_instance_mask | = 1U < < pkt . instance ;
} else if ( msp_instance_mask ! = 0 ) {
for ( uint8_t i = 0 ; i < _num_drivers ; i + + ) {
drivers [ i ] - > handle_msp ( pkt ) ;
}
}
}
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# endif
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# if AP_BARO_EXTERNALAHRS_ENABLED
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/*
handle ExternalAHRS barometer data
*/
void AP_Baro : : handle_external ( const AP_ExternalAHRS : : baro_data_message_t & pkt )
{
for ( uint8_t i = 0 ; i < _num_drivers ; i + + ) {
drivers [ i ] - > handle_external ( pkt ) ;
}
}
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# endif // AP_BARO_EXTERNALAHRS_ENABLED
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namespace AP {
AP_Baro & baro ( )
{
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return * AP_Baro : : get_singleton ( ) ;
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}
} ;