ardupilot/libraries/AP_Compass/AP_Compass_QURT.cpp
Lucas De Marchi 20a4a42cb3 AP_Compass: don't store raw and unfiltered fields
These are not used. The only place where raw fields are used are in the
compass calibrator and we don't need to store them.

Additionally remove duplicated documentation about the meaning of the
functions to avoid them getting out of sync.
2016-03-23 17:50:38 -03:00

97 lines
2.6 KiB
C++

/// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
/*
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/>.
*/
#include <AP_HAL/AP_HAL.h>
#if CONFIG_HAL_BOARD == HAL_BOARD_QURT
#include "AP_Compass_QURT.h"
#include <AP_InertialSensor/AP_InertialSensor_QURT.h>
extern const AP_HAL::HAL& hal;
// Public Methods //////////////////////////////////////////////////////////////
// constructor
AP_Compass_QURT::AP_Compass_QURT(Compass &compass):
AP_Compass_Backend(compass)
{
}
// detect the sensor
AP_Compass_Backend *AP_Compass_QURT::detect(Compass &compass)
{
AP_Compass_QURT *sensor = new AP_Compass_QURT(compass);
if (sensor == NULL) {
return NULL;
}
if (!sensor->init()) {
delete sensor;
return NULL;
}
return sensor;
}
bool AP_Compass_QURT::init(void)
{
instance = register_compass();
// publish a zero as a hack
publish_filtered_field(Vector3f(), instance);
hal.scheduler->register_timer_process(FUNCTOR_BIND_MEMBER(&AP_Compass_QURT::timer_update, void));
return true;
}
void AP_Compass_QURT::read(void)
{
// avoid division by zero if we haven't received any mag reports
if (count != 0) {
sum /= count;
publish_filtered_field(sum, instance);
sum.zero();
count = 0;
}
}
void AP_Compass_QURT::timer_update(void)
{
// cope the data
struct mpu9x50_data data;
if (mpu9250_mag_buffer == nullptr || !mpu9250_mag_buffer->pop(data)) {
return;
}
last_timestamp = data.timestamp;
Vector3f raw_field(data.mag_raw[0],
data.mag_raw[1],
-data.mag_raw[2]);
// rotate raw_field from sensor frame to body frame
rotate_field(raw_field, instance);
// publish raw_field (uncorrected point sample) for calibration use
publish_raw_field(raw_field, data.timestamp, instance);
// correct raw_field for known errors
correct_field(raw_field, instance);
// accumulate into averaging filter
sum += raw_field;
count++;
}
#endif // CONFIG_HAL_BOARD