ardupilot/libraries/AP_Compass/AP_Compass_QURT.cpp

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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/>.
*/
#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 == nullptr) {
return nullptr;
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}
if (!sensor->init()) {
delete sensor;
return nullptr;
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}
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