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AC_AttitudeControl: use ticks32() for is_active tests

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this avoids problems with very uneven timing
This commit is contained in:
Andrew Tridgell 2023-01-28 20:43:41 +11:00
parent 5f6d3e5d8c
commit 64d03555af
2 changed files with 11 additions and 11 deletions
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18
libraries/AC_AttitudeControl/AC_PosControl.cpp
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@ -4,7 +4,7 @@
#include <AP_Logger/AP_Logger.h>
#include <AP_Motors/AP_Motors.h> // motors library
#include <AP_Vehicle/AP_Vehicle_Type.h>
#include <AP_InertialSensor/AP_InertialSensor.h>
#include <AP_Scheduler/AP_Scheduler.h>
extern const AP_HAL::HAL& hal;
@ -518,7 +518,7 @@ void AC_PosControl::init_xy_controller()
init_ekf_xy_reset();
// initialise z_controller time out
_last_update_xy_us = AP::ins().get_last_update_usec();
_last_update_xy_ticks = AP::scheduler().ticks32();
}
/// input_accel_xy - calculate a jerk limited path from the current position, velocity and acceleration to an input acceleration.
@ -589,8 +589,8 @@ void AC_PosControl::stop_vel_xy_stabilisation()
// is_active_xy - returns true if the xy position controller has bee n run in the previous 5 loop times
bool AC_PosControl::is_active_xy() const
{
const uint32_t dt_us = AP::ins().get_last_update_usec() - _last_update_xy_us;
return dt_us <= _dt * 1500000.0;
const uint32_t dt_ticks = AP::scheduler().ticks32() - _last_update_xy_ticks;
return dt_ticks <= 1;
}
/// update_xy_controller - runs the horizontal position controller correcting position, velocity and acceleration errors.
@ -610,7 +610,7 @@ void AC_PosControl::update_xy_controller()
INTERNAL_ERROR(AP_InternalError::error_t::flow_of_control);
}
}
_last_update_xy_us = AP::ins().get_last_update_usec();
_last_update_xy_ticks = AP::scheduler().ticks32();
float ahrsGndSpdLimit, ahrsControlScaleXY;
AP::ahrs().getControlLimits(ahrsGndSpdLimit, ahrsControlScaleXY);
@ -779,7 +779,7 @@ void AC_PosControl::init_z_controller()
init_ekf_z_reset();
// initialise z_controller time out
_last_update_z_us = AP::ins().get_last_update_usec();
_last_update_z_ticks = AP::scheduler().ticks32();
}
/// input_accel_z - calculate a jerk limited path from the current position, velocity and acceleration to an input acceleration.
@ -904,8 +904,8 @@ void AC_PosControl::update_pos_offset_z(float pos_offset_z)
// is_active_z - returns true if the z position controller has been run in the previous 5 loop times
bool AC_PosControl::is_active_z() const
{
const uint32_t dt_us = AP::ins().get_last_update_usec() - _last_update_z_us;
return dt_us <= _dt * 1500000.0;
const uint32_t dt_ticks = AP::scheduler().ticks32() - _last_update_z_ticks;
return dt_ticks <= 1;
}
/// update_z_controller - runs the vertical position controller correcting position, velocity and acceleration errors.
@ -925,7 +925,7 @@ void AC_PosControl::update_z_controller()
INTERNAL_ERROR(AP_InternalError::error_t::flow_of_control);
}
}
_last_update_z_us = AP::ins().get_last_update_usec();
_last_update_z_ticks = AP::scheduler().ticks32();
// calculate the target velocity correction
float pos_target_zf = _pos_target.z;

4
libraries/AC_AttitudeControl/AC_PosControl.h
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@ -437,8 +437,8 @@ protected:
// internal variables
float _dt; // time difference (in seconds) since the last loop time
uint64_t _last_update_xy_us; // system time (in microseconds) since last update_xy_controller call
uint64_t _last_update_z_us; // system time (in microseconds) since last update_z_controller call
uint32_t _last_update_xy_ticks; // ticks of last last update_xy_controller call
uint32_t _last_update_z_ticks; // ticks of last update_z_controller call
float _vel_max_xy_cms; // max horizontal speed in cm/s used for kinematic shaping
float _vel_max_up_cms; // max climb rate in cm/s used for kinematic shaping
float _vel_max_down_cms; // max descent rate in cm/s used for kinematic shaping