diff options
29 files changed, 2638 insertions, 117 deletions
diff --git a/ROMFS/px4fmu_common/init.d/100_mpx_easystar b/ROMFS/px4fmu_common/init.d/100_mpx_easystar index e1cefdb99..4ed73909e 100644 --- a/ROMFS/px4fmu_common/init.d/100_mpx_easystar +++ b/ROMFS/px4fmu_common/init.d/100_mpx_easystar @@ -1,6 +1,6 @@ #!nsh -echo "[init] Multiplex Easystar" +echo "[init] PX4FMU v1, v2 with or without IO on EasyStar" # # Load default params for this platform @@ -20,28 +20,31 @@ fi # param set MAV_TYPE 1 -# -# Start MAVLink (depends on orb) -# -mavlink start -d /dev/ttyS1 -b 57600 -usleep 5000 +set EXIT_ON_END no # -# Start and configure PX4IO interface +# Start and configure PX4IO or FMU interface # -sh /etc/init.d/rc.io +if px4io detect +then + # Start MAVLink (depends on orb) + mavlink start + usleep 5000 -# -# Set actuator limit to 100 Hz update (50 Hz PWM) -px4io limit 100 - -# -# Start the commander -# -commander start + sh /etc/init.d/rc.io + # Limit to 100 Hz updates and (implicit) 50 Hz PWM + px4io limit 100 +else + # Start MAVLink (on UART1 / ttyS0) + mavlink start -d /dev/ttyS0 + usleep 5000 + fmu mode_pwm + param set BAT_V_SCALING 0.004593 + set EXIT_ON_END yes +fi # -# Start the sensors +# Start the sensors and test them. # sh /etc/init.d/rc.sensors @@ -49,9 +52,14 @@ sh /etc/init.d/rc.sensors # Start logging (depends on sensors) # sh /etc/init.d/rc.logging - + +# +# Start the commander. # -# Start GPS interface +commander start + +# +# Start GPS interface (depends on orb) # gps start @@ -65,4 +73,10 @@ att_pos_estimator_ekf start # mixer load /dev/pwm_output /etc/mixers/FMU_RET.mix fw_att_control start -fw_pos_control_l1 start +# Not ready yet for prime-time +#fw_pos_control_l1 start + +if [ $EXIT_ON_END == yes ] +then + exit +fi diff --git a/ROMFS/px4fmu_common/init.d/101_hk_bixler b/ROMFS/px4fmu_common/init.d/101_hk_bixler new file mode 100644 index 000000000..b4daa8f5a --- /dev/null +++ b/ROMFS/px4fmu_common/init.d/101_hk_bixler @@ -0,0 +1,82 @@ +#!nsh + +echo "[init] PX4FMU v1, v2 with or without IO on HK Bixler" + +# +# Load default params for this platform +# +if param compare SYS_AUTOCONFIG 1 +then + # Set all params here, then disable autoconfig + # TODO + + param set SYS_AUTOCONFIG 0 + param save +fi + +# +# Force some key parameters to sane values +# MAV_TYPE 1 = fixed wing +# +param set MAV_TYPE 1 + +set EXIT_ON_END no + +# +# Start and configure PX4IO or FMU interface +# +if px4io detect +then + # Start MAVLink (depends on orb) + mavlink start + usleep 5000 + + sh /etc/init.d/rc.io + # Limit to 100 Hz updates and (implicit) 50 Hz PWM + px4io limit 100 +else + # Start MAVLink (on UART1 / ttyS0) + mavlink start -d /dev/ttyS0 + usleep 5000 + fmu mode_pwm + param set BAT_V_SCALING 0.004593 + set EXIT_ON_END yes +fi + +# +# Start the sensors and test them. +# +sh /etc/init.d/rc.sensors + +# +# Start logging (depends on sensors) +# +sh /etc/init.d/rc.logging + +# +# Start the commander. +# +commander start + +# +# Start GPS interface (depends on orb) +# +gps start + +# +# Start the attitude and position estimator +# +att_pos_estimator_ekf start + +# +# Load mixer and start controllers (depends on px4io) +# +mixer load /dev/pwm_output /etc/mixers/FMU_AERT.mix +fw_att_control start +# Not ready yet for prime-time +#fw_pos_control_l1 start + +if [ $EXIT_ON_END == yes ] +then + exit +fi diff --git a/ROMFS/px4fmu_common/init.d/30_io_camflyer b/ROMFS/px4fmu_common/init.d/30_io_camflyer index f7e653362..c4c4ea3da 100644 --- a/ROMFS/px4fmu_common/init.d/30_io_camflyer +++ b/ROMFS/px4fmu_common/init.d/30_io_camflyer @@ -1,6 +1,6 @@ #!nsh -echo "[init] 30_io_camflyer: PX4FMU+PX4IO on Camflyer" +echo "[init] PX4FMU v1, v2 with or without IO on Camflyer" # # Load default params for this platform @@ -19,34 +19,32 @@ fi # MAV_TYPE 1 = fixed wing # param set MAV_TYPE 1 - -# -# Start MAVLink (depends on orb) -# -mavlink start -d /dev/ttyS1 -b 57600 -usleep 5000 - -# -# Start the commander (depends on orb, mavlink) -# -commander start - -# -# Start PX4IO interface (depends on orb, commander) + +set EXIT_ON_END no + # -px4io start - +# Start and configure PX4IO or FMU interface # -# Allow PX4IO to recover from midair restarts. -# this is very unlikely, but quite safe and robust. -px4io recovery +if px4io detect +then + # Start MAVLink (depends on orb) + mavlink start + usleep 5000 -# -# Set actuator limit to 100 Hz update (50 Hz PWM) -px4io limit 100 + sh /etc/init.d/rc.io + # Limit to 100 Hz updates and (implicit) 50 Hz PWM + px4io limit 100 +else + # Start MAVLink (on UART1 / ttyS0) + mavlink start -d /dev/ttyS0 + usleep 5000 + fmu mode_pwm + param set BAT_V_SCALING 0.004593 + set EXIT_ON_END yes +fi # -# Start the sensors (depends on orb, px4io) +# Start the sensors and test them. # sh /etc/init.d/rc.sensors @@ -54,7 +52,12 @@ sh /etc/init.d/rc.sensors # Start logging (depends on sensors) # sh /etc/init.d/rc.logging - + +# +# Start the commander. +# +commander start + # # Start GPS interface (depends on orb) # @@ -70,4 +73,10 @@ att_pos_estimator_ekf start # mixer load /dev/pwm_output /etc/mixers/FMU_Q.mix fw_att_control start -fw_pos_control_l1 start +# Not ready yet for prime-time +#fw_pos_control_l1 start + +if [ $EXIT_ON_END == yes ] +then + exit +fi diff --git a/ROMFS/px4fmu_common/init.d/31_io_phantom b/ROMFS/px4fmu_common/init.d/31_io_phantom index e1e609927..8d4158a18 100644 --- a/ROMFS/px4fmu_common/init.d/31_io_phantom +++ b/ROMFS/px4fmu_common/init.d/31_io_phantom @@ -1,6 +1,6 @@ #!nsh -echo "[init] 31_io_phantom: PX4FMU+PX4IO on Phantom" +echo "[init] PX4FMU v1, v2 with or without IO on Phantom FPV" # # Load default params for this platform @@ -20,28 +20,31 @@ fi # param set MAV_TYPE 1 -# -# Start MAVLink (depends on orb) -# -mavlink start -d /dev/ttyS1 -b 57600 -usleep 5000 +set EXIT_ON_END no # -# Start and configure PX4IO interface +# Start and configure PX4IO or FMU interface # -sh /etc/init.d/rc.io +if px4io detect +then + # Start MAVLink (depends on orb) + mavlink start + usleep 5000 -# -# Set actuator limit to 100 Hz update (50 Hz PWM) -px4io limit 100 - -# -# Start the commander -# -commander start + sh /etc/init.d/rc.io + # Limit to 100 Hz updates and (implicit) 50 Hz PWM + px4io limit 100 +else + # Start MAVLink (on UART1 / ttyS0) + mavlink start -d /dev/ttyS0 + usleep 5000 + fmu mode_pwm + param set BAT_V_SCALING 0.004593 + set EXIT_ON_END yes +fi # -# Start the sensors +# Start the sensors and test them. # sh /etc/init.d/rc.sensors @@ -49,9 +52,14 @@ sh /etc/init.d/rc.sensors # Start logging (depends on sensors) # sh /etc/init.d/rc.logging - + +# +# Start the commander. # -# Start GPS interface +commander start + +# +# Start GPS interface (depends on orb) # gps start @@ -65,4 +73,10 @@ att_pos_estimator_ekf start # mixer load /dev/pwm_output /etc/mixers/FMU_Q.mix fw_att_control start -fw_pos_control_l1 start +# Not ready yet for prime-time +#fw_pos_control_l1 start + +if [ $EXIT_ON_END == yes ] +then + exit +fi diff --git a/ROMFS/px4fmu_common/init.d/rc.hil b/ROMFS/px4fmu_common/init.d/rc.hil index eccb2b767..b924d62bc 100644 --- a/ROMFS/px4fmu_common/init.d/rc.hil +++ b/ROMFS/px4fmu_common/init.d/rc.hil @@ -5,10 +5,9 @@ echo "[HIL] starting.." -uorb start - # Tell MAVLink that this link is "fast" -mavlink start -b 230400 -d /dev/ttyS1 +sleep 2 +mavlink start -b 230400 -d /dev/ttyACM0 # Create a fake HIL /dev/pwm_output interface hil mode_pwm @@ -50,7 +49,8 @@ att_pos_estimator_ekf start # Load mixer and start controllers (depends on px4io) # mixer load /dev/pwm_output /etc/mixers/FMU_AET.mix -fw_pos_control_l1 start +#fw_pos_control_l1 start fw_att_control start echo "[HIL] setup done, running" + diff --git a/ROMFS/px4fmu_common/init.d/rc.usb b/ROMFS/px4fmu_common/init.d/rc.usb index 9264985d6..ccf2cd47e 100644 --- a/ROMFS/px4fmu_common/init.d/rc.usb +++ b/ROMFS/px4fmu_common/init.d/rc.usb @@ -21,7 +21,6 @@ if mavlink stop then echo "stopped other MAVLink instance" fi -sleep 2 mavlink start -b 230400 -d /dev/ttyACM0 # Stop commander @@ -37,13 +36,6 @@ then echo "Commander started" fi -# Stop px4io -if px4io stop -then - echo "PX4IO stopped" -fi -sleep 1 - # Start px4io if present if px4io start then diff --git a/ROMFS/px4fmu_common/init.d/rcS b/ROMFS/px4fmu_common/init.d/rcS index 32fb67a45..1f466e49f 100755 --- a/ROMFS/px4fmu_common/init.d/rcS +++ b/ROMFS/px4fmu_common/init.d/rcS @@ -101,8 +101,14 @@ then fi fi - # Try to get an USB console - nshterm /dev/ttyACM0 & + if param compare SYS_AUTOSTART 1000 + then + sh /etc/init.d/rc.hil + set MODE custom + else + # Try to get an USB console + nshterm /dev/ttyACM0 & + fi # # Upgrade PX4IO firmware @@ -178,6 +184,18 @@ then sh /etc/init.d/31_io_phantom set MODE custom fi + + if param compare SYS_AUTOSTART 100 + then + sh /etc/init.d/100_mpx_easystar + set MODE custom + fi + + if param compare SYS_AUTOSTART 101 + then + sh /etc/init.d/101_hk_bixler + set MODE custom + fi # Start any custom extensions that might be missing if [ -f /fs/microsd/etc/rc.local ] @@ -190,7 +208,6 @@ then then # Telemetry port is on both FMU boards ttyS1 mavlink start -b 57600 -d /dev/ttyS1 - usleep 5000 # Start commander commander start diff --git a/makefiles/config_px4fmu-v1_default.mk b/makefiles/config_px4fmu-v1_default.mk index 3e94c3534..7bb5dc62e 100644 --- a/makefiles/config_px4fmu-v1_default.mk +++ b/makefiles/config_px4fmu-v1_default.mk @@ -80,7 +80,7 @@ MODULES += examples/flow_position_estimator # #MODULES += modules/segway # XXX needs state machine update #MODULES += modules/fw_pos_control_l1 -#MODULES += modules/fw_att_control +MODULES += modules/fw_att_control MODULES += modules/multirotor_att_control MODULES += modules/multirotor_pos_control MODULES += examples/flow_position_control @@ -111,7 +111,7 @@ MODULES += modules/uORB LIBRARIES += lib/mathlib/CMSIS MODULES += lib/mathlib MODULES += lib/mathlib/math/filter -#MODULES += lib/ecl +MODULES += lib/ecl MODULES += lib/geo # diff --git a/makefiles/config_px4fmu-v2_default.mk b/makefiles/config_px4fmu-v2_default.mk index bd73bde5e..d9dab1a2c 100644 --- a/makefiles/config_px4fmu-v2_default.mk +++ b/makefiles/config_px4fmu-v2_default.mk @@ -75,8 +75,9 @@ MODULES += examples/flow_position_estimator # # Vehicle Control # +#MODULES += modules/segway # XXX needs state machine update #MODULES += modules/fw_pos_control_l1 -#MODULES += modules/fw_att_control +MODULES += modules/fw_att_control MODULES += modules/multirotor_att_control MODULES += modules/multirotor_pos_control @@ -105,7 +106,7 @@ MODULES += modules/uORB LIBRARIES += lib/mathlib/CMSIS MODULES += lib/mathlib MODULES += lib/mathlib/math/filter -#MODULES += lib/ecl +MODULES += lib/ecl MODULES += lib/geo # diff --git a/src/drivers/px4io/px4io.cpp b/src/drivers/px4io/px4io.cpp index c88abe59a..78d1d3e63 100644 --- a/src/drivers/px4io/px4io.cpp +++ b/src/drivers/px4io/px4io.cpp @@ -487,25 +487,27 @@ PX4IO::detect() { int ret; - ASSERT(_task == -1); + if (_task == -1) { - /* do regular cdev init */ - ret = CDev::init(); - if (ret != OK) - return ret; + /* do regular cdev init */ + ret = CDev::init(); + if (ret != OK) + return ret; - /* get some parameters */ - unsigned protocol = io_reg_get(PX4IO_PAGE_CONFIG, PX4IO_P_CONFIG_PROTOCOL_VERSION); - if (protocol != PX4IO_PROTOCOL_VERSION) { - if (protocol == _io_reg_get_error) { - log("IO not installed"); - } else { - log("IO version error"); - mavlink_log_emergency(_mavlink_fd, "IO VERSION MISMATCH, PLEASE UPGRADE SOFTWARE!"); + /* get some parameters */ + unsigned protocol = io_reg_get(PX4IO_PAGE_CONFIG, PX4IO_P_CONFIG_PROTOCOL_VERSION); + if (protocol != PX4IO_PROTOCOL_VERSION) { + if (protocol == _io_reg_get_error) { + log("IO not installed"); + } else { + log("IO version error"); + mavlink_log_emergency(_mavlink_fd, "IO VERSION MISMATCH, PLEASE UPGRADE SOFTWARE!"); + } + + return -1; } - - return -1; } + log("IO found"); return 0; diff --git a/src/lib/ecl/attitude_fw/ecl_pitch_controller.cpp b/src/lib/ecl/attitude_fw/ecl_pitch_controller.cpp new file mode 100644 index 000000000..77ec15c53 --- /dev/null +++ b/src/lib/ecl/attitude_fw/ecl_pitch_controller.cpp @@ -0,0 +1,127 @@ +/**************************************************************************** + * + * Copyright (c) 2013 Estimation and Control Library (ECL). All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name APL nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/** + * @file ecl_pitch_controller.cpp + * Implementation of a simple orthogonal pitch PID controller. + * + */ + +#include "ecl_pitch_controller.h" +#include <math.h> +#include <stdint.h> +#include <float.h> +#include <geo/geo.h> +#include <ecl/ecl.h> +#include <mathlib/mathlib.h> + +ECL_PitchController::ECL_PitchController() : + _last_run(0), + _last_output(0.0f), + _integrator(0.0f), + _rate_error(0.0f), + _rate_setpoint(0.0f), + _max_deflection_rad(math::radians(45.0f)) +{ +} + +float ECL_PitchController::control(float pitch_setpoint, float pitch, float pitch_rate, float roll, float scaler, + bool lock_integrator, float airspeed_min, float airspeed_max, float airspeed) +{ + /* get the usual dt estimate */ + uint64_t dt_micros = ecl_elapsed_time(&_last_run); + _last_run = ecl_absolute_time(); + + float dt = dt_micros / 1000000; + + /* lock integral for long intervals */ + if (dt_micros > 500000) + lock_integrator = true; + + float k_roll_ff = math::max((_k_p - _k_i * _tc) * _tc - _k_d, 0.0f); + float k_i_rate = _k_i * _tc; + + /* input conditioning */ + if (!isfinite(airspeed)) { + /* airspeed is NaN, +- INF or not available, pick center of band */ + airspeed = 0.5f * (airspeed_min + airspeed_max); + } else if (airspeed < airspeed_min) { + airspeed = airspeed_min; + } + + /* calculate the offset in the rate resulting from rolling */ + float turn_offset = fabsf((CONSTANTS_ONE_G / airspeed) * + tanf(roll) * sinf(roll)) * _roll_ff; + + float pitch_error = pitch_setpoint - pitch; + /* rate setpoint from current error and time constant */ + _rate_setpoint = pitch_error / _tc; + + /* add turn offset */ + _rate_setpoint += turn_offset; + + _rate_error = _rate_setpoint - pitch_rate; + + float ilimit_scaled = 0.0f; + + if (!lock_integrator && k_i_rate > 0.0f && airspeed > 0.5f * airspeed_min) { + + float id = _rate_error * k_i_rate * dt * scaler; + + /* + * anti-windup: do not allow integrator to increase into the + * wrong direction if actuator is at limit + */ + if (_last_output < -_max_deflection_rad) { + /* only allow motion to center: increase value */ + id = math::max(id, 0.0f); + } else if (_last_output > _max_deflection_rad) { + /* only allow motion to center: decrease value */ + id = math::min(id, 0.0f); + } + + _integrator += id; + } + + /* integrator limit */ + _integrator = math::constrain(_integrator, -ilimit_scaled, ilimit_scaled); + /* store non-limited output */ + _last_output = ((_rate_error * _k_d * scaler) + _integrator + (_rate_setpoint * k_roll_ff)) * scaler; + + return math::constrain(_last_output, -_max_deflection_rad, _max_deflection_rad); +} + +void ECL_PitchController::reset_integrator() +{ + _integrator = 0.0f; +} diff --git a/src/lib/ecl/attitude_fw/ecl_pitch_controller.h b/src/lib/ecl/attitude_fw/ecl_pitch_controller.h new file mode 100644 index 000000000..02ca62dad --- /dev/null +++ b/src/lib/ecl/attitude_fw/ecl_pitch_controller.h @@ -0,0 +1,107 @@ +/**************************************************************************** + * + * Copyright (c) 2013 Estimation and Control Library (ECL). All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name APL nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/** + * @file ecl_pitch_controller.h + * Definition of a simple orthogonal pitch PID controller. + * + */ + +#ifndef ECL_PITCH_CONTROLLER_H +#define ECL_PITCH_CONTROLLER_H + +#include <stdbool.h> +#include <stdint.h> + +class __EXPORT ECL_PitchController +{ +public: + ECL_PitchController(); + + float control(float pitch_setpoint, float pitch, float pitch_rate, float roll, float scaler = 1.0f, + bool lock_integrator = false, float airspeed_min = 0.0f, float airspeed_max = 0.0f, float airspeed = (0.0f / 0.0f)); + + void reset_integrator(); + + void set_time_constant(float time_constant) { + _tc = time_constant; + } + void set_k_p(float k_p) { + _k_p = k_p; + } + void set_k_i(float k_i) { + _k_i = k_i; + } + void set_k_d(float k_d) { + _k_d = k_d; + } + void set_integrator_max(float max) { + _integrator_max = max; + } + void set_max_rate_pos(float max_rate_pos) { + _max_rate_pos = max_rate_pos; + } + void set_max_rate_neg(float max_rate_neg) { + _max_rate_neg = max_rate_neg; + } + void set_roll_ff(float roll_ff) { + _roll_ff = roll_ff; + } + + float get_rate_error() { + return _rate_error; + } + + float get_desired_rate() { + return _rate_setpoint; + } + +private: + + uint64_t _last_run; + float _tc; + float _k_p; + float _k_i; + float _k_d; + float _integrator_max; + float _max_rate_pos; + float _max_rate_neg; + float _roll_ff; + float _last_output; + float _integrator; + float _rate_error; + float _rate_setpoint; + float _max_deflection_rad; +}; + +#endif // ECL_PITCH_CONTROLLER_H diff --git a/src/lib/ecl/attitude_fw/ecl_roll_controller.cpp b/src/lib/ecl/attitude_fw/ecl_roll_controller.cpp new file mode 100644 index 000000000..6de30fc33 --- /dev/null +++ b/src/lib/ecl/attitude_fw/ecl_roll_controller.cpp @@ -0,0 +1,125 @@ +/**************************************************************************** + * + * Copyright (c) 2013 Estimation and Control Library (ECL). All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name APL nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/** + * @file ecl_roll_controller.cpp + * Implementation of a simple orthogonal roll PID controller. + * + */ + +#include "../ecl.h" +#include "ecl_roll_controller.h" +#include <stdint.h> +#include <float.h> +#include <geo/geo.h> +#include <ecl/ecl.h> +#include <mathlib/mathlib.h> + +ECL_RollController::ECL_RollController() : + _last_run(0), + _tc(0.1f), + _last_output(0.0f), + _integrator(0.0f), + _rate_error(0.0f), + _rate_setpoint(0.0f), + _max_deflection_rad(math::radians(45.0f)) +{ + +} + +float ECL_RollController::control(float roll_setpoint, float roll, float roll_rate, + float scaler, bool lock_integrator, float airspeed_min, float airspeed_max, float airspeed) +{ + /* get the usual dt estimate */ + uint64_t dt_micros = ecl_elapsed_time(&_last_run); + _last_run = ecl_absolute_time(); + + float dt = (dt_micros > 500000) ? 0.0f : dt_micros / 1000000; + + float k_ff = math::max((_k_p - _k_i * _tc) * _tc - _k_d, 0.0f); + float k_i_rate = _k_i * _tc; + + /* input conditioning */ + if (!isfinite(airspeed)) { + /* airspeed is NaN, +- INF or not available, pick center of band */ + airspeed = 0.5f * (airspeed_min + airspeed_max); + } else if (airspeed < airspeed_min) { + airspeed = airspeed_min; + } + + float roll_error = roll_setpoint - roll; + _rate_setpoint = roll_error / _tc; + + /* limit the rate */ + if (_max_rate > 0.01f) { + _rate_setpoint = (_rate_setpoint > _max_rate) ? _max_rate : _rate_setpoint; + _rate_setpoint = (_rate_setpoint < -_max_rate) ? -_max_rate : _rate_setpoint; + } + + _rate_error = _rate_setpoint - roll_rate; + + + float ilimit_scaled = 0.0f; + + if (!lock_integrator && k_i_rate > 0.0f && airspeed > 0.5f * airspeed_min) { + + float id = _rate_error * k_i_rate * dt * scaler; + + /* + * anti-windup: do not allow integrator to increase into the + * wrong direction if actuator is at limit + */ + if (_last_output < -_max_deflection_rad) { + /* only allow motion to center: increase value */ + id = math::max(id, 0.0f); + } else if (_last_output > _max_deflection_rad) { + /* only allow motion to center: decrease value */ + id = math::min(id, 0.0f); + } + + _integrator += id; + } + + /* integrator limit */ + _integrator = math::constrain(_integrator, -ilimit_scaled, ilimit_scaled); + /* store non-limited output */ + _last_output = ((_rate_error * _k_d * scaler) + _integrator + (_rate_setpoint * k_ff)) * scaler; + + return math::constrain(_last_output, -_max_deflection_rad, _max_deflection_rad); +} + +void ECL_RollController::reset_integrator() +{ + _integrator = 0.0f; +} + diff --git a/src/lib/ecl/attitude_fw/ecl_roll_controller.h b/src/lib/ecl/attitude_fw/ecl_roll_controller.h new file mode 100644 index 000000000..7fbcdf4b8 --- /dev/null +++ b/src/lib/ecl/attitude_fw/ecl_roll_controller.h @@ -0,0 +1,100 @@ +/**************************************************************************** + * + * Copyright (c) 2013 Estimation and Control Library (ECL). All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name APL nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/** + * @file ecl_roll_controller.h + * Definition of a simple orthogonal roll PID controller. + * + */ + +#ifndef ECL_ROLL_CONTROLLER_H +#define ECL_ROLL_CONTROLLER_H + +#include <stdbool.h> +#include <stdint.h> + +class __EXPORT ECL_RollController +{ +public: + ECL_RollController(); + + float control(float roll_setpoint, float roll, float roll_rate, + float scaler = 1.0f, bool lock_integrator = false, float airspeed_min = 0.0f, float airspeed_max = 0.0f, float airspeed = (0.0f / 0.0f)); + + void reset_integrator(); + + void set_time_constant(float time_constant) { + if (time_constant > 0.1f && time_constant < 3.0f) { + _tc = time_constant; + } + } + void set_k_p(float k_p) { + _k_p = k_p; + } + void set_k_i(float k_i) { + _k_i = k_i; + } + void set_k_d(float k_d) { + _k_d = k_d; + } + void set_integrator_max(float max) { + _integrator_max = max; + } + void set_max_rate(float max_rate) { + _max_rate = max_rate; + } + + float get_rate_error() { + return _rate_error; + } + + float get_desired_rate() { + return _rate_setpoint; + } + +private: + uint64_t _last_run; + float _tc; + float _k_p; + float _k_i; + float _k_d; + float _integrator_max; + float _max_rate; + float _last_output; + float _integrator; + float _rate_error; + float _rate_setpoint; + float _max_deflection_rad; +}; + +#endif // ECL_ROLL_CONTROLLER_H diff --git a/src/lib/ecl/attitude_fw/ecl_yaw_controller.cpp b/src/lib/ecl/attitude_fw/ecl_yaw_controller.cpp new file mode 100644 index 000000000..a0f901e71 --- /dev/null +++ b/src/lib/ecl/attitude_fw/ecl_yaw_controller.cpp @@ -0,0 +1,74 @@ +/**************************************************************************** + * + * Copyright (c) 2013 Estimation and Control Library (ECL). All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name APL nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/** + * @file ecl_yaw_controller.cpp + * Implementation of a simple orthogonal coordinated turn yaw PID controller. + * + */ + +#include "ecl_yaw_controller.h" +#include <stdint.h> +#include <float.h> +#include <geo/geo.h> +#include <ecl/ecl.h> +#include <mathlib/mathlib.h> + +ECL_YawController::ECL_YawController() : + _last_run(0), + _last_error(0.0f), + _last_output(0.0f), + _last_rate_hp_out(0.0f), + _last_rate_hp_in(0.0f), + _k_d_last(0.0f), + _integrator(0.0f) +{ + +} + +float ECL_YawController::control(float roll, float yaw_rate, float accel_y, float scaler, bool lock_integrator, + float airspeed_min, float airspeed_max, float aspeed) +{ + /* get the usual dt estimate */ + uint64_t dt_micros = ecl_elapsed_time(&_last_run); + _last_run = ecl_absolute_time(); + + float dt = (dt_micros > 500000) ? 0.0f : dt_micros / 1000000; + + return 0.0f; +} + +void ECL_YawController::reset_integrator() +{ + _integrator = 0.0f; +} diff --git a/src/lib/ecl/attitude_fw/ecl_yaw_controller.h b/src/lib/ecl/attitude_fw/ecl_yaw_controller.h new file mode 100644 index 000000000..cfaa6c233 --- /dev/null +++ b/src/lib/ecl/attitude_fw/ecl_yaw_controller.h @@ -0,0 +1,89 @@ +/**************************************************************************** + * + * Copyright (c) 2013 Estimation and Control Library (ECL). All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name APL nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/** + * @file ecl_yaw_controller.h + * Definition of a simple orthogonal coordinated turn yaw PID controller. + * + */ +#ifndef ECL_YAW_CONTROLLER_H +#define ECL_YAW_CONTROLLER_H + +#include <stdbool.h> +#include <stdint.h> + +class __EXPORT ECL_YawController +{ +public: + ECL_YawController(); + + float control(float roll, float yaw_rate, float accel_y, float scaler = 1.0f, bool lock_integrator = false, + float airspeed_min = 0, float airspeed_max = 0, float aspeed = (0.0f / 0.0f)); + + void reset_integrator(); + + void set_k_side(float k_a) { + _k_side = k_a; + } + void set_k_i(float k_i) { + _k_i = k_i; + } + void set_k_d(float k_d) { + _k_d = k_d; + } + void set_k_roll_ff(float k_roll_ff) { + _k_roll_ff = k_roll_ff; + } + void set_integrator_max(float max) { + _integrator_max = max; + } + +private: + uint64_t _last_run; + + float _k_side; + float _k_i; + float _k_d; + float _k_roll_ff; + float _integrator_max; + + float _last_error; + float _last_output; + float _last_rate_hp_out; + float _last_rate_hp_in; + float _k_d_last; + float _integrator; + +}; + +#endif // ECL_YAW_CONTROLLER_H diff --git a/src/lib/ecl/ecl.h b/src/lib/ecl/ecl.h new file mode 100644 index 000000000..2bd76ce97 --- /dev/null +++ b/src/lib/ecl/ecl.h @@ -0,0 +1,43 @@ +/**************************************************************************** + * + * Copyright (c) 2013 Estimation and Control Library (ECL). All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name APL nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/** + * @file ecl.h + * Adapter / shim layer for system calls needed by ECL + * + */ + +#include <drivers/drv_hrt.h> + +#define ecl_absolute_time hrt_absolute_time +#define ecl_elapsed_time hrt_elapsed_time
\ No newline at end of file diff --git a/src/lib/ecl/module.mk b/src/lib/ecl/module.mk new file mode 100644 index 000000000..19610872e --- /dev/null +++ b/src/lib/ecl/module.mk @@ -0,0 +1,40 @@ +############################################################################ +# +# Copyright (c) 2013 Estimation and Control Library (ECL). All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in +# the documentation and/or other materials provided with the +# distribution. +# 3. Neither the name PX4 nor the names of its contributors may be +# used to endorse or promote products derived from this software +# without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS +# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, +# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS +# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED +# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN +# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +# POSSIBILITY OF SUCH DAMAGE. +# +############################################################################ + +# +# Estimation and Control Library +# + +SRCS = attitude_fw/ecl_pitch_controller.cpp \ + attitude_fw/ecl_roll_controller.cpp \ + attitude_fw/ecl_yaw_controller.cpp diff --git a/src/lib/geo/geo.c b/src/lib/geo/geo.c index 63792dda5..43105fdba 100644 --- a/src/lib/geo/geo.c +++ b/src/lib/geo/geo.c @@ -210,6 +210,36 @@ __EXPORT float get_bearing_to_next_waypoint(double lat_now, double lon_now, doub return theta; } +__EXPORT void get_vector_to_next_waypoint(double lat_now, double lon_now, double lat_next, double lon_next, float* vx, float* vy) +{ + double lat_now_rad = lat_now * M_DEG_TO_RAD; + double lon_now_rad = lon_now * M_DEG_TO_RAD; + double lat_next_rad = lat_next * M_DEG_TO_RAD; + double lon_next_rad = lon_next * M_DEG_TO_RAD; + + double d_lat = lat_next_rad - lat_now_rad; + double d_lon = lon_next_rad - lon_now_rad; + + /* conscious mix of double and float trig function to maximize speed and efficiency */ + *vy = CONSTANTS_RADIUS_OF_EARTH * sin(d_lon) * cos(lat_next_rad); + *vx = CONSTANTS_RADIUS_OF_EARTH * cos(lat_now_rad) * sin(lat_next_rad) - sin(lat_now_rad) * cos(lat_next_rad) * cos(d_lon); +} + +__EXPORT void get_vector_to_next_waypoint_fast(double lat_now, double lon_now, double lat_next, double lon_next, float* vx, float* vy) +{ + double lat_now_rad = lat_now * M_DEG_TO_RAD; + double lon_now_rad = lon_now * M_DEG_TO_RAD; + double lat_next_rad = lat_next * M_DEG_TO_RAD; + double lon_next_rad = lon_next * M_DEG_TO_RAD; + + double d_lat = lat_next_rad - lat_now_rad; + double d_lon = lon_next_rad - lon_now_rad; + + /* conscious mix of double and float trig function to maximize speed and efficiency */ + *vy = CONSTANTS_RADIUS_OF_EARTH * d_lon; + *vx = CONSTANTS_RADIUS_OF_EARTH * cos(lat_now_rad); +} + // Additional functions - @author Doug Weibel <douglas.weibel@colorado.edu> __EXPORT int get_distance_to_line(struct crosstrack_error_s * crosstrack_error, double lat_now, double lon_now, double lat_start, double lon_start, double lat_end, double lon_end) diff --git a/src/lib/geo/geo.h b/src/lib/geo/geo.h index dadec51ec..123ff80f1 100644 --- a/src/lib/geo/geo.h +++ b/src/lib/geo/geo.h @@ -57,10 +57,6 @@ __BEGIN_DECLS #define CONSTANTS_ABSOLUTE_NULL_CELSIUS -273.15f /* °C */ #define CONSTANTS_RADIUS_OF_EARTH 6371000 /* meters (m) */ -/* compatibility aliases */ -#define RADIUS_OF_EARTH CONSTANTS_RADIUS_OF_EARTH -#define GRAVITY_MSS CONSTANTS_ONE_G - // XXX remove struct crosstrack_error_s { bool past_end; // Flag indicating we are past the end of the line/arc segment @@ -116,6 +112,10 @@ __EXPORT float get_distance_to_next_waypoint(double lat_now, double lon_now, dou */ __EXPORT float get_bearing_to_next_waypoint(double lat_now, double lon_now, double lat_next, double lon_next); +__EXPORT void get_vector_to_next_waypoint(double lat_now, double lon_now, double lat_next, double lon_next, float* vx, float* vy); + +__EXPORT void get_vector_to_next_waypoint_fast(double lat_now, double lon_now, double lat_next, double lon_next, float* vx, float* vy); + __EXPORT int get_distance_to_line(struct crosstrack_error_s * crosstrack_error, double lat_now, double lon_now, double lat_start, double lon_start, double lat_end, double lon_end); __EXPORT int get_distance_to_arc(struct crosstrack_error_s * crosstrack_error, double lat_now, double lon_now, double lat_center, double lon_center, diff --git a/src/modules/commander/commander.cpp b/src/modules/commander/commander.cpp index 830ee9743..5eeb018fd 100644 --- a/src/modules/commander/commander.cpp +++ b/src/modules/commander/commander.cpp @@ -343,6 +343,9 @@ void print_status() warnx("arming: %s", armed_str); } +static orb_advert_t control_mode_pub; +static orb_advert_t status_pub; + void handle_command(struct vehicle_status_s *status, const struct safety_s *safety, struct vehicle_control_mode_s *control_mode, struct vehicle_command_s *cmd, struct actuator_armed_s *armed) { /* result of the command */ @@ -356,6 +359,10 @@ void handle_command(struct vehicle_status_s *status, const struct safety_s *safe uint8_t base_mode = (uint8_t) cmd->param1; uint8_t custom_main_mode = (uint8_t) cmd->param2; + /* set HIL state */ + hil_state_t new_hil_state = (base_mode & MAV_MODE_FLAG_HIL_ENABLED) ? HIL_STATE_ON : HIL_STATE_OFF; + hil_state_transition(new_hil_state, status_pub, status, control_mode_pub, control_mode, mavlink_fd); + // TODO remove debug code //mavlink_log_critical(mavlink_fd, "[cmd] command setmode: %d %d", base_mode, custom_main_mode); /* set arming state */ @@ -543,7 +550,6 @@ int commander_thread_main(int argc, char *argv[]) } /* Main state machine */ - orb_advert_t status_pub; /* make sure we are in preflight state */ memset(&status, 0, sizeof(status)); status.condition_landed = true; // initialize to safe value @@ -555,7 +561,7 @@ int commander_thread_main(int argc, char *argv[]) /* flags for control apps */ struct vehicle_control_mode_s control_mode; - orb_advert_t control_mode_pub; + /* Initialize all flags to false */ memset(&control_mode, 0, sizeof(control_mode)); diff --git a/src/modules/commander/state_machine_helper.cpp b/src/modules/commander/state_machine_helper.cpp index 3cef10185..8ce31550f 100644 --- a/src/modules/commander/state_machine_helper.cpp +++ b/src/modules/commander/state_machine_helper.cpp @@ -228,8 +228,9 @@ main_state_transition(struct vehicle_status_s *current_state, main_state_t new_m case MAIN_STATE_SEATBELT: - /* need altitude estimate */ - if (current_state->condition_local_altitude_valid) { + /* need at minimum altitude estimate */ + if (current_state->condition_local_altitude_valid || + current_state->condition_global_position_valid) { ret = TRANSITION_CHANGED; } @@ -237,8 +238,9 @@ main_state_transition(struct vehicle_status_s *current_state, main_state_t new_m case MAIN_STATE_EASY: - /* need local position estimate */ - if (current_state->condition_local_position_valid) { + /* need at minimum local position estimate */ + if (current_state->condition_local_position_valid || + current_state->condition_global_position_valid) { ret = TRANSITION_CHANGED; } @@ -502,6 +504,8 @@ int hil_state_transition(hil_state_t new_state, int status_pub, struct vehicle_s current_control_mode->timestamp = hrt_absolute_time(); orb_publish(ORB_ID(vehicle_control_mode), control_mode_pub, current_control_mode); + // XXX also set lockdown here + ret = OK; } else { diff --git a/src/modules/fw_att_control/fw_att_control_main.cpp b/src/modules/fw_att_control/fw_att_control_main.cpp new file mode 100644 index 000000000..6b98003fd --- /dev/null +++ b/src/modules/fw_att_control/fw_att_control_main.cpp @@ -0,0 +1,770 @@ +/**************************************************************************** + * + * Copyright (c) 2013 PX4 Development Team. All rights reserved. + * Author: Lorenz Meier + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name PX4 nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/** + * @file fw_att_control_main.c + * Implementation of a generic attitude controller based on classic orthogonal PIDs. + * + * @author Lorenz Meier <lm@inf.ethz.ch> + * + */ + +#include <nuttx/config.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <fcntl.h> +#include <errno.h> +#include <math.h> +#include <poll.h> +#include <time.h> +#include <drivers/drv_hrt.h> +#include <drivers/drv_accel.h> +#include <arch/board/board.h> +#include <uORB/uORB.h> +#include <uORB/topics/airspeed.h> +#include <uORB/topics/vehicle_attitude_setpoint.h> +#include <uORB/topics/manual_control_setpoint.h> +#include <uORB/topics/actuator_controls.h> +#include <uORB/topics/vehicle_rates_setpoint.h> +#include <uORB/topics/vehicle_attitude.h> +#include <uORB/topics/vehicle_control_mode.h> +#include <uORB/topics/parameter_update.h> +#include <systemlib/param/param.h> +#include <systemlib/err.h> +#include <systemlib/pid/pid.h> +#include <geo/geo.h> +#include <systemlib/perf_counter.h> +#include <systemlib/systemlib.h> +#include <mathlib/mathlib.h> + +#include <ecl/attitude_fw/ecl_pitch_controller.h> +#include <ecl/attitude_fw/ecl_roll_controller.h> +#include <ecl/attitude_fw/ecl_yaw_controller.h> + +/** + * Fixedwing attitude control app start / stop handling function + * + * @ingroup apps + */ +extern "C" __EXPORT int fw_att_control_main(int argc, char *argv[]); + +class FixedwingAttitudeControl +{ +public: + /** + * Constructor + */ + FixedwingAttitudeControl(); + + /** + * Destructor, also kills the sensors task. + */ + ~FixedwingAttitudeControl(); + + /** + * Start the sensors task. + * + * @return OK on success. + */ + int start(); + +private: + + bool _task_should_exit; /**< if true, sensor task should exit */ + int _control_task; /**< task handle for sensor task */ + + int _att_sub; /**< vehicle attitude subscription */ + int _accel_sub; /**< accelerometer subscription */ + int _att_sp_sub; /**< vehicle attitude setpoint */ + int _attitude_sub; /**< raw rc channels data subscription */ + int _airspeed_sub; /**< airspeed subscription */ + int _vcontrol_mode_sub; /**< vehicle status subscription */ + int _params_sub; /**< notification of parameter updates */ + int _manual_sub; /**< notification of manual control updates */ + + orb_advert_t _rate_sp_pub; /**< rate setpoint publication */ + orb_advert_t _attitude_sp_pub; /**< attitude setpoint point */ + orb_advert_t _actuators_0_pub; /**< actuator control group 0 setpoint */ + + struct vehicle_attitude_s _att; /**< vehicle attitude */ + struct accel_report _accel; /**< body frame accelerations */ + struct vehicle_attitude_setpoint_s _att_sp; /**< vehicle attitude setpoint */ + struct manual_control_setpoint_s _manual; /**< r/c channel data */ + struct airspeed_s _airspeed; /**< airspeed */ + struct vehicle_control_mode_s _vcontrol_mode; /**< vehicle control mode */ + struct actuator_controls_s _actuators; /**< actuator control inputs */ + + perf_counter_t _loop_perf; /**< loop performance counter */ + + bool _setpoint_valid; /**< flag if the position control setpoint is valid */ + bool _airspeed_valid; /**< flag if the airspeed measurement is valid */ + + struct { + float tconst; + float p_p; + float p_d; + float p_i; + float p_rmax_pos; + float p_rmax_neg; + float p_integrator_max; + float p_roll_feedforward; + float r_p; + float r_d; + float r_i; + float r_integrator_max; + float r_rmax; + float y_p; + float y_i; + float y_d; + float y_roll_feedforward; + float y_integrator_max; + + float airspeed_min; + float airspeed_trim; + float airspeed_max; + } _parameters; /**< local copies of interesting parameters */ + + struct { + + param_t tconst; + param_t p_p; + param_t p_d; + param_t p_i; + param_t p_rmax_pos; + param_t p_rmax_neg; + param_t p_integrator_max; + param_t p_roll_feedforward; + param_t r_p; + param_t r_d; + param_t r_i; + param_t r_integrator_max; + param_t r_rmax; + param_t y_p; + param_t y_i; + param_t y_d; + param_t y_roll_feedforward; + param_t y_integrator_max; + + param_t airspeed_min; + param_t airspeed_trim; + param_t airspeed_max; + } _parameter_handles; /**< handles for interesting parameters */ + + + ECL_RollController _roll_ctrl; + ECL_PitchController _pitch_ctrl; + ECL_YawController _yaw_ctrl; + + + /** + * Update our local parameter cache. + */ + int parameters_update(); + + /** + * Update control outputs + * + */ + void control_update(); + + /** + * Check for changes in vehicle control mode. + */ + void vehicle_control_mode_poll(); + + /** + * Check for changes in manual inputs. + */ + void vehicle_manual_poll(); + + + /** + * Check for airspeed updates. + */ + bool vehicle_airspeed_poll(); + + /** + * Check for accel updates. + */ + void vehicle_accel_poll(); + + /** + * Check for set triplet updates. + */ + void vehicle_setpoint_poll(); + + /** + * Shim for calling task_main from task_create. + */ + static void task_main_trampoline(int argc, char *argv[]); + + /** + * Main sensor collection task. + */ + void task_main() __attribute__((noreturn)); +}; + +namespace att_control +{ + +/* oddly, ERROR is not defined for c++ */ +#ifdef ERROR +# undef ERROR +#endif +static const int ERROR = -1; + +FixedwingAttitudeControl *g_control; +} + +FixedwingAttitudeControl::FixedwingAttitudeControl() : + + _task_should_exit(false), + _control_task(-1), + +/* subscriptions */ + _att_sub(-1), + _accel_sub(-1), + _airspeed_sub(-1), + _vcontrol_mode_sub(-1), + _params_sub(-1), + _manual_sub(-1), + +/* publications */ + _rate_sp_pub(-1), + _actuators_0_pub(-1), + _attitude_sp_pub(-1), + +/* performance counters */ + _loop_perf(perf_alloc(PC_ELAPSED, "fw att control")), +/* states */ + _setpoint_valid(false), + _airspeed_valid(false) +{ + _parameter_handles.tconst = param_find("FW_ATT_TC"); + _parameter_handles.p_p = param_find("FW_P_P"); + _parameter_handles.p_d = param_find("FW_P_D"); + _parameter_handles.p_i = param_find("FW_P_I"); + _parameter_handles.p_rmax_pos = param_find("FW_P_RMAX_POS"); + _parameter_handles.p_rmax_neg = param_find("FW_P_RMAX_NEG"); + _parameter_handles.p_integrator_max = param_find("FW_P_integrator_max"); + _parameter_handles.p_roll_feedforward = param_find("FW_P_ROLLFF"); + + _parameter_handles.r_p = param_find("FW_R_P"); + _parameter_handles.r_d = param_find("FW_R_D"); + _parameter_handles.r_i = param_find("FW_R_I"); + _parameter_handles.r_integrator_max = param_find("FW_R_integrator_max"); + _parameter_handles.r_rmax = param_find("FW_R_RMAX"); + + _parameter_handles.y_p = param_find("FW_Y_P"); + _parameter_handles.y_i = param_find("FW_Y_I"); + _parameter_handles.y_d = param_find("FW_Y_D"); + _parameter_handles.y_roll_feedforward = param_find("FW_Y_ROLLFF"); + _parameter_handles.y_integrator_max = param_find("FW_Y_integrator_max"); + + _parameter_handles.airspeed_min = param_find("FW_AIRSPD_MIN"); + _parameter_handles.airspeed_trim = param_find("FW_AIRSPD_TRIM"); + _parameter_handles.airspeed_max = param_find("FW_AIRSPD_MAX"); + + /* fetch initial parameter values */ + parameters_update(); +} + +FixedwingAttitudeControl::~FixedwingAttitudeControl() +{ + if (_control_task != -1) { + + /* task wakes up every 100ms or so at the longest */ + _task_should_exit = true; + + /* wait for a second for the task to quit at our request */ + unsigned i = 0; + + do { + /* wait 20ms */ + usleep(20000); + + /* if we have given up, kill it */ + if (++i > 50) { + task_delete(_control_task); + break; + } + } while (_control_task != -1); + } + + att_control::g_control = nullptr; +} + +int +FixedwingAttitudeControl::parameters_update() +{ + + param_get(_parameter_handles.tconst, &(_parameters.tconst)); + param_get(_parameter_handles.p_p, &(_parameters.p_p)); + param_get(_parameter_handles.p_d, &(_parameters.p_d)); + param_get(_parameter_handles.p_i, &(_parameters.p_i)); + param_get(_parameter_handles.p_rmax_pos, &(_parameters.p_rmax_pos)); + param_get(_parameter_handles.p_rmax_neg, &(_parameters.p_rmax_neg)); + param_get(_parameter_handles.p_integrator_max, &(_parameters.p_integrator_max)); + param_get(_parameter_handles.p_roll_feedforward, &(_parameters.p_roll_feedforward)); + + param_get(_parameter_handles.r_p, &(_parameters.r_p)); + param_get(_parameter_handles.r_d, &(_parameters.r_d)); + param_get(_parameter_handles.r_i, &(_parameters.r_i)); + param_get(_parameter_handles.r_integrator_max, &(_parameters.r_integrator_max)); + param_get(_parameter_handles.r_rmax, &(_parameters.r_rmax)); + + param_get(_parameter_handles.y_p, &(_parameters.y_p)); + param_get(_parameter_handles.y_i, &(_parameters.y_i)); + param_get(_parameter_handles.y_d, &(_parameters.y_d)); + param_get(_parameter_handles.y_roll_feedforward, &(_parameters.y_roll_feedforward)); + param_get(_parameter_handles.y_integrator_max, &(_parameters.y_integrator_max)); + + param_get(_parameter_handles.airspeed_min, &(_parameters.airspeed_min)); + param_get(_parameter_handles.airspeed_trim, &(_parameters.airspeed_trim)); + param_get(_parameter_handles.airspeed_max, &(_parameters.airspeed_max)); + + /* pitch control parameters */ + _pitch_ctrl.set_time_constant(_parameters.tconst); + _pitch_ctrl.set_k_p(math::radians(_parameters.p_p)); + _pitch_ctrl.set_k_i(math::radians(_parameters.p_i)); + _pitch_ctrl.set_k_d(math::radians(_parameters.p_d)); + _pitch_ctrl.set_integrator_max(math::radians(_parameters.p_integrator_max)); + _pitch_ctrl.set_max_rate_pos(math::radians(_parameters.p_rmax_pos)); + _pitch_ctrl.set_max_rate_neg(math::radians(_parameters.p_rmax_neg)); + _pitch_ctrl.set_roll_ff(math::radians(_parameters.p_roll_feedforward)); + + /* roll control parameters */ + _roll_ctrl.set_time_constant(_parameters.tconst); + _roll_ctrl.set_k_p(math::radians(_parameters.r_p)); + _roll_ctrl.set_k_i(math::radians(_parameters.r_i)); + _roll_ctrl.set_k_d(math::radians(_parameters.r_d)); + _roll_ctrl.set_integrator_max(math::radians(_parameters.r_integrator_max)); + _roll_ctrl.set_max_rate(math::radians(_parameters.r_rmax)); + + /* yaw control parameters */ + _yaw_ctrl.set_k_side(math::radians(_parameters.y_p)); + _yaw_ctrl.set_k_i(math::radians(_parameters.y_i)); + _yaw_ctrl.set_k_d(math::radians(_parameters.y_d)); + _yaw_ctrl.set_k_roll_ff(math::radians(_parameters.y_roll_feedforward)); + _yaw_ctrl.set_integrator_max(math::radians(_parameters.y_integrator_max)); + + return OK; +} + +void +FixedwingAttitudeControl::vehicle_control_mode_poll() +{ + bool vcontrol_mode_updated; + + /* Check HIL state if vehicle status has changed */ + orb_check(_vcontrol_mode_sub, &vcontrol_mode_updated); + + if (vcontrol_mode_updated) { + + orb_copy(ORB_ID(vehicle_control_mode), _vcontrol_mode_sub, &_vcontrol_mode); + } +} + +void +FixedwingAttitudeControl::vehicle_manual_poll() +{ + bool manual_updated; + + /* get pilots inputs */ + orb_check(_manual_sub, &manual_updated); + + if (manual_updated) { + + orb_copy(ORB_ID(manual_control_setpoint), _manual_sub, &_manual); + } +} + +bool +FixedwingAttitudeControl::vehicle_airspeed_poll() +{ + /* check if there is a new position */ + bool airspeed_updated; + orb_check(_airspeed_sub, &airspeed_updated); + + if (airspeed_updated) { + orb_copy(ORB_ID(airspeed), _airspeed_sub, &_airspeed); + return true; + } + + return false; +} + +void +FixedwingAttitudeControl::vehicle_accel_poll() +{ + /* check if there is a new position */ + bool accel_updated; + orb_check(_accel_sub, &accel_updated); + + if (accel_updated) { + orb_copy(ORB_ID(sensor_accel), _accel_sub, &_accel); + } +} + +void +FixedwingAttitudeControl::vehicle_setpoint_poll() +{ + /* check if there is a new setpoint */ + bool att_sp_updated; + orb_check(_att_sp_sub, &att_sp_updated); + + if (att_sp_updated) { + orb_copy(ORB_ID(vehicle_attitude_setpoint), _att_sp_sub, &_att_sp); + _setpoint_valid = true; + } +} + +void +FixedwingAttitudeControl::task_main_trampoline(int argc, char *argv[]) +{ + att_control::g_control->task_main(); +} + +void +FixedwingAttitudeControl::task_main() +{ + + /* inform about start */ + warnx("Initializing.."); + fflush(stdout); + + /* + * do subscriptions + */ + _att_sp_sub = orb_subscribe(ORB_ID(vehicle_attitude_setpoint)); + _att_sub = orb_subscribe(ORB_ID(vehicle_attitude)); + _accel_sub = orb_subscribe(ORB_ID(sensor_accel)); + _airspeed_sub = orb_subscribe(ORB_ID(airspeed)); + _vcontrol_mode_sub = orb_subscribe(ORB_ID(vehicle_control_mode)); + _params_sub = orb_subscribe(ORB_ID(parameter_update)); + _manual_sub = orb_subscribe(ORB_ID(manual_control_setpoint)); + + /* rate limit vehicle status updates to 5Hz */ + orb_set_interval(_vcontrol_mode_sub, 200); + orb_set_interval(_att_sub, 100); + + parameters_update(); + + /* get an initial update for all sensor and status data */ + (void)vehicle_airspeed_poll(); + vehicle_setpoint_poll(); + vehicle_accel_poll(); + vehicle_control_mode_poll(); + vehicle_manual_poll(); + + /* wakeup source(s) */ + struct pollfd fds[2]; + + /* Setup of loop */ + fds[0].fd = _params_sub; + fds[0].events = POLLIN; + fds[1].fd = _att_sub; + fds[1].events = POLLIN; + + while (!_task_should_exit) { + + /* wait for up to 500ms for data */ + int pret = poll(&fds[0], (sizeof(fds) / sizeof(fds[0])), 100); + + /* timed out - periodic check for _task_should_exit, etc. */ + if (pret == 0) + continue; + + /* this is undesirable but not much we can do - might want to flag unhappy status */ + if (pret < 0) { + warn("poll error %d, %d", pret, errno); + continue; + } + + perf_begin(_loop_perf); + + /* only update parameters if they changed */ + if (fds[0].revents & POLLIN) { + /* read from param to clear updated flag */ + struct parameter_update_s update; + orb_copy(ORB_ID(parameter_update), _params_sub, &update); + + /* update parameters from storage */ + parameters_update(); + } + + /* only run controller if attitude changed */ + if (fds[1].revents & POLLIN) { + + + static uint64_t last_run = 0; + float deltaT = (hrt_absolute_time() - last_run) / 1000000.0f; + last_run = hrt_absolute_time(); + + /* guard against too large deltaT's */ + if (deltaT > 1.0f) + deltaT = 0.01f; + + /* load local copies */ + orb_copy(ORB_ID(vehicle_attitude), _att_sub, &_att); + + _airspeed_valid = vehicle_airspeed_poll(); + + vehicle_setpoint_poll(); + + vehicle_accel_poll(); + + vehicle_control_mode_poll(); + + vehicle_manual_poll(); + + /* lock integrator until control is started */ + bool lock_integrator; + + if (_vcontrol_mode.flag_control_attitude_enabled) { + lock_integrator = false; + + } else { + lock_integrator = true; + } + + /* decide if in stabilized or full manual control */ + + if (_vcontrol_mode.flag_control_attitude_enabled) { + + /* scale from radians to normalized -1 .. 1 range */ + const float actuator_scaling = 1.0f / (M_PI_F / 4.0f); + + /* scale around tuning airspeed */ + + float airspeed; + + /* if airspeed is smaller than min, the sensor is not giving good readings */ + if (!_airspeed_valid || + (_airspeed.indicated_airspeed_m_s < _parameters.airspeed_min) || + !isfinite(_airspeed.indicated_airspeed_m_s)) { + airspeed = _parameters.airspeed_min + (_parameters.airspeed_max - _parameters.airspeed_min) / 2.0f; + + } else { + airspeed = _airspeed.indicated_airspeed_m_s; + } + + float airspeed_scaling = _parameters.airspeed_trim / airspeed; + //warnx("aspd scale: %6.2f act scale: %6.2f", airspeed_scaling, actuator_scaling); + + float roll_sp, pitch_sp; + float throttle_sp = 0.0f; + + if (_vcontrol_mode.flag_control_velocity_enabled || _vcontrol_mode.flag_control_position_enabled) { + roll_sp = _att_sp.roll_body; + pitch_sp = _att_sp.pitch_body; + throttle_sp = _att_sp.thrust; + + } else { + /* + * Scale down roll and pitch as the setpoints are radians + * and a typical remote can only do 45 degrees, the mapping is + * -1..+1 to -45..+45 degrees or -0.75..+0.75 radians. + * + * With this mapping the stick angle is a 1:1 representation of + * the commanded attitude. If more than 45 degrees are desired, + * a scaling parameter can be applied to the remote. + */ + roll_sp = _manual.roll * 0.75f; + pitch_sp = _manual.pitch * 0.75f; + throttle_sp = _manual.throttle; + _actuators.control[4] = _manual.flaps; + + /* + * in manual mode no external source should / does emit attitude setpoints. + * emit the manual setpoint here to allow attitude controller tuning + * in attitude control mode. + */ + struct vehicle_attitude_setpoint_s att_sp; + att_sp.timestamp = hrt_absolute_time(); + att_sp.roll_body = roll_sp; + att_sp.pitch_body = pitch_sp; + att_sp.yaw_body = 0.0f; + att_sp.thrust = throttle_sp; + + /* lazily publish the setpoint only once available */ + if (_attitude_sp_pub > 0) { + /* publish the attitude setpoint */ + orb_publish(ORB_ID(vehicle_attitude_setpoint), _attitude_sp_pub, &att_sp); + + } else { + /* advertise and publish */ + _attitude_sp_pub = orb_advertise(ORB_ID(vehicle_attitude_setpoint), &att_sp); + } + } + + float roll_rad = _roll_ctrl.control(roll_sp, _att.roll, _att.rollspeed, + airspeed_scaling, lock_integrator, _parameters.airspeed_min, _parameters.airspeed_max, airspeed); + _actuators.control[0] = (isfinite(roll_rad)) ? roll_rad * actuator_scaling : 0.0f; + + float pitch_rad = _pitch_ctrl.control(pitch_sp, _att.pitch, _att.pitchspeed, _att.roll, airspeed_scaling, + lock_integrator, _parameters.airspeed_min, _parameters.airspeed_max, airspeed); + _actuators.control[1] = (isfinite(pitch_rad)) ? pitch_rad * actuator_scaling : 0.0f; + + float yaw_rad = _yaw_ctrl.control(_att.roll, _att.yawspeed, _accel.y, airspeed_scaling, lock_integrator, + _parameters.airspeed_min, _parameters.airspeed_max, airspeed); + _actuators.control[2] = (isfinite(yaw_rad)) ? yaw_rad * actuator_scaling : 0.0f; + + /* throttle passed through */ + _actuators.control[3] = (isfinite(throttle_sp)) ? throttle_sp : 0.0f; + + // warnx("aspd: %s: %6.2f, aspd scaling: %6.2f, controls: %5.2f %5.2f %5.2f %5.2f", (_airspeed_valid) ? "valid" : "unknown", + // airspeed, airspeed_scaling, _actuators.control[0], _actuators.control[1], + // _actuators.control[2], _actuators.control[3]); + + /* + * Lazily publish the rate setpoint (for analysis, the actuators are published below) + * only once available + */ + vehicle_rates_setpoint_s rates_sp; + rates_sp.roll = _roll_ctrl.get_desired_rate(); + rates_sp.pitch = _pitch_ctrl.get_desired_rate(); + rates_sp.yaw = 0.0f; // XXX not yet implemented + + rates_sp.timestamp = hrt_absolute_time(); + + if (_rate_sp_pub > 0) { + /* publish the attitude setpoint */ + orb_publish(ORB_ID(vehicle_rates_setpoint), _rate_sp_pub, &rates_sp); + + } else { + /* advertise and publish */ + _rate_sp_pub = orb_advertise(ORB_ID(vehicle_rates_setpoint), &rates_sp); + } + + } else { + /* manual/direct control */ + _actuators.control[0] = _manual.roll; + _actuators.control[1] = _manual.pitch; + _actuators.control[2] = _manual.yaw; + _actuators.control[3] = _manual.throttle; + _actuators.control[4] = _manual.flaps; + } + + /* lazily publish the setpoint only once available */ + _actuators.timestamp = hrt_absolute_time(); + + if (_actuators_0_pub > 0) { + /* publish the attitude setpoint */ + orb_publish(ORB_ID(actuator_controls_0), _actuators_0_pub, &_actuators); + + } else { + /* advertise and publish */ + _actuators_0_pub = orb_advertise(ORB_ID(actuator_controls_0), &_actuators); + } + + } + + perf_end(_loop_perf); + } + + warnx("exiting.\n"); + + _control_task = -1; + _exit(0); +} + +int +FixedwingAttitudeControl::start() +{ + ASSERT(_control_task == -1); + + /* start the task */ + _control_task = task_spawn_cmd("fw_att_control", + SCHED_DEFAULT, + SCHED_PRIORITY_MAX - 5, + 2048, + (main_t)&FixedwingAttitudeControl::task_main_trampoline, + nullptr); + + if (_control_task < 0) { + warn("task start failed"); + return -errno; + } + + return OK; +} + +int fw_att_control_main(int argc, char *argv[]) +{ + if (argc < 1) + errx(1, "usage: fw_att_control {start|stop|status}"); + + if (!strcmp(argv[1], "start")) { + + if (att_control::g_control != nullptr) + errx(1, "already running"); + + att_control::g_control = new FixedwingAttitudeControl; + + if (att_control::g_control == nullptr) + errx(1, "alloc failed"); + + if (OK != att_control::g_control->start()) { + delete att_control::g_control; + att_control::g_control = nullptr; + err(1, "start failed"); + } + + exit(0); + } + + if (!strcmp(argv[1], "stop")) { + if (att_control::g_control == nullptr) + errx(1, "not running"); + + delete att_control::g_control; + att_control::g_control = nullptr; + exit(0); + } + + if (!strcmp(argv[1], "status")) { + if (att_control::g_control) { + errx(0, "running"); + + } else { + errx(1, "not running"); + } + } + + warnx("unrecognized command"); + return 1; +} diff --git a/src/modules/fw_att_control/fw_att_control_params.c b/src/modules/fw_att_control/fw_att_control_params.c new file mode 100644 index 000000000..97aa275de --- /dev/null +++ b/src/modules/fw_att_control/fw_att_control_params.c @@ -0,0 +1,136 @@ +/**************************************************************************** + * + * Copyright (c) 2013 PX4 Development Team. All rights reserved. + * Author: Lorenz Meier <lm@inf.ethz.ch> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name PX4 nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * AS IS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/** + * @file fw_pos_control_l1_params.c + * + * Parameters defined by the L1 position control task + * + * @author Lorenz Meier <lm@inf.ethz.ch> + */ + +#include <nuttx/config.h> + +#include <systemlib/param/param.h> + +/* + * Controller parameters, accessible via MAVLink + * + */ + +// @DisplayName Attitude Time Constant +// @Description This defines the latency between a step input and the achieved setpoint. Half a second is a good start value and fits for most average systems. Smaller systems may require smaller values, but as this will wear out servos faster, the value should only be decreased as needed. +// @Range 0.4 to 1.0 seconds, in tens of seconds +PARAM_DEFINE_FLOAT(FW_ATT_TC, 0.5f); + +// @DisplayName Proportional gain. +// @Description This defines how much the elevator input will be commanded dependend on the current pitch error. +// @Range 10 to 200, 1 increments +PARAM_DEFINE_FLOAT(FW_P_P, 40.0f); + +// @DisplayName Damping gain. +// @Description This gain damps the airframe pitch rate. In particular relevant for flying wings. +// @Range 0.0 to 10.0, 0.1 increments +PARAM_DEFINE_FLOAT(FW_P_D, 0.0f); + +// @DisplayName Integrator gain. +// @Description This gain defines how much control response will result out of a steady state error. It trims any constant error. +// @Range 0 to 50.0 +PARAM_DEFINE_FLOAT(FW_P_I, 0.0f); + +// @DisplayName Maximum positive / up pitch rate. +// @Description This limits the maximum pitch up angular rate the controller will output (in degrees per second). Setting a value of zero disables the limit. +// @Range 0 to 90.0 degrees per seconds, in 1 increments +PARAM_DEFINE_FLOAT(FW_P_RMAX_POS, 0.0f); + +// @DisplayName Maximum negative / down pitch rate. +// @Description This limits the maximum pitch down up angular rate the controller will output (in degrees per second). Setting a value of zero disables the limit. +// @Range 0 to 90.0 degrees per seconds, in 1 increments +PARAM_DEFINE_FLOAT(FW_P_RMAX_NEG, 0.0f); + +// @DisplayName Pitch Integrator Anti-Windup +// @Description This limits the range in degrees the integrator can wind up to. +// @Range 0.0 to 45.0 +// @Increment 1.0 +PARAM_DEFINE_FLOAT(FW_P_IMAX, 15.0f); + +// @DisplayName Roll feedforward gain. +// @Description This compensates during turns and ensures the nose stays level. +// @Range 0.5 2.0 +// @Increment 0.05 +// @User User +PARAM_DEFINE_FLOAT(FW_P_ROLLFF, 1.0f); + +// @DisplayName Proportional Gain. +// @Description This gain controls the roll angle to roll actuator output. +// @Range 10.0 200.0 +// @Increment 10.0 +// @User User +PARAM_DEFINE_FLOAT(FW_R_P, 40.0f); + +// @DisplayName Damping Gain +// @Description Controls the roll rate to roll actuator output. It helps to reduce motions in turbulence. +// @Range 0.0 10.0 +// @Increment 1.0 +// @User User +PARAM_DEFINE_FLOAT(FW_R_D, 0.0f); + +// @DisplayName Integrator Gain +// @Description This gain controls the contribution of the integral to roll actuator outputs. It trims out steady state errors. +// @Range 0.0 100.0 +// @Increment 5.0 +// @User User +PARAM_DEFINE_FLOAT(FW_R_I, 0.0f); + +// @DisplayName Roll Integrator Anti-Windup +// @Description This limits the range in degrees the integrator can wind up to. +// @Range 0.0 to 45.0 +// @Increment 1.0 +PARAM_DEFINE_FLOAT(FW_R_IMAX, 15.0f); + +// @DisplayName Maximum Roll Rate +// @Description This limits the maximum roll rate the controller will output (in degrees per second). Setting a value of zero disables the limit. +// @Range 0 to 90.0 degrees per seconds +// @Increment 1.0 +PARAM_DEFINE_FLOAT(FW_R_RMAX, 60); + + +PARAM_DEFINE_FLOAT(FW_Y_P, 0); +PARAM_DEFINE_FLOAT(FW_Y_I, 0); +PARAM_DEFINE_FLOAT(FW_Y_IMAX, 15.0f); +PARAM_DEFINE_FLOAT(FW_Y_D, 0); +PARAM_DEFINE_FLOAT(FW_Y_ROLLFF, 1); +PARAM_DEFINE_FLOAT(FW_AIRSPD_MIN, 9.0f); +PARAM_DEFINE_FLOAT(FW_AIRSPD_TRIM, 12.0f); +PARAM_DEFINE_FLOAT(FW_AIRSPD_MAX, 18.0f); diff --git a/src/modules/fw_att_control/module.mk b/src/modules/fw_att_control/module.mk new file mode 100644 index 000000000..1e600757e --- /dev/null +++ b/src/modules/fw_att_control/module.mk @@ -0,0 +1,41 @@ +############################################################################ +# +# Copyright (c) 2013 PX4 Development Team. All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in +# the documentation and/or other materials provided with the +# distribution. +# 3. Neither the name PX4 nor the names of its contributors may be +# used to endorse or promote products derived from this software +# without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS +# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, +# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS +# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED +# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN +# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +# POSSIBILITY OF SUCH DAMAGE. +# +############################################################################ + +# +# Fixedwing attitude control application +# + +MODULE_COMMAND = fw_att_control + +SRCS = fw_att_control_main.cpp \ + fw_att_control_params.c diff --git a/src/modules/navigator/module.mk b/src/modules/navigator/module.mk new file mode 100644 index 000000000..0404b06c7 --- /dev/null +++ b/src/modules/navigator/module.mk @@ -0,0 +1,41 @@ +############################################################################ +# +# Copyright (c) 2013 PX4 Development Team. All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in +# the documentation and/or other materials provided with the +# distribution. +# 3. Neither the name PX4 nor the names of its contributors may be +# used to endorse or promote products derived from this software +# without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS +# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, +# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS +# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED +# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN +# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +# POSSIBILITY OF SUCH DAMAGE. +# +############################################################################ + +# +# Main Navigation Controller +# + +MODULE_COMMAND = navigator + +SRCS = navigator_main.cpp \ + navigator_params.c diff --git a/src/modules/navigator/navigator_main.cpp b/src/modules/navigator/navigator_main.cpp new file mode 100644 index 000000000..f6c44444a --- /dev/null +++ b/src/modules/navigator/navigator_main.cpp @@ -0,0 +1,604 @@ +/**************************************************************************** + * + * Copyright (c) 2013 PX4 Development Team. All rights reserved. + * Author: Lorenz Meier + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name PX4 nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ +/** + * @file navigator_main.c + * Implementation of the main navigation state machine. + * + * Handles missions, geo fencing and failsafe navigation behavior. + */ + +#include <nuttx/config.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <fcntl.h> +#include <errno.h> +#include <math.h> +#include <poll.h> +#include <time.h> +#include <drivers/drv_hrt.h> +#include <arch/board/board.h> +#include <uORB/uORB.h> +#include <uORB/topics/airspeed.h> +#include <uORB/topics/vehicle_global_position.h> +#include <uORB/topics/vehicle_global_position_set_triplet.h> +#include <uORB/topics/vehicle_attitude_setpoint.h> +#include <uORB/topics/manual_control_setpoint.h> +#include <uORB/topics/actuator_controls.h> +#include <uORB/topics/vehicle_rates_setpoint.h> +#include <uORB/topics/vehicle_attitude.h> +#include <uORB/topics/vehicle_status.h> +#include <uORB/topics/parameter_update.h> +#include <uORB/topics/mission.h> +#include <systemlib/param/param.h> +#include <systemlib/err.h> +#include <geo/geo.h> +#include <systemlib/perf_counter.h> +#include <systemlib/systemlib.h> +#include <mathlib/mathlib.h> + +/** + * navigator app start / stop handling function + * + * @ingroup apps + */ +extern "C" __EXPORT int navigator_main(int argc, char *argv[]); + +class Navigator +{ +public: + /** + * Constructor + */ + Navigator(); + + /** + * Destructor, also kills the sensors task. + */ + ~Navigator(); + + /** + * Start the sensors task. + * + * @return OK on success. + */ + int start(); + +private: + + bool _task_should_exit; /**< if true, sensor task should exit */ + int _navigator_task; /**< task handle for sensor task */ + + int _global_pos_sub; + int _att_sub; /**< vehicle attitude subscription */ + int _attitude_sub; /**< raw rc channels data subscription */ + int _airspeed_sub; /**< airspeed subscription */ + int _vstatus_sub; /**< vehicle status subscription */ + int _params_sub; /**< notification of parameter updates */ + int _manual_control_sub; /**< notification of manual control updates */ + int _mission_sub; + + orb_advert_t _triplet_pub; /**< position setpoint */ + + struct vehicle_attitude_s _att; /**< vehicle attitude */ + struct vehicle_attitude_setpoint_s _att_sp; /**< vehicle attitude setpoint */ + struct manual_control_setpoint_s _manual; /**< r/c channel data */ + struct airspeed_s _airspeed; /**< airspeed */ + struct vehicle_status_s _vstatus; /**< vehicle status */ + struct vehicle_global_position_s _global_pos; /**< global vehicle position */ + struct vehicle_global_position_set_triplet_s _global_triplet; /**< triplet of global setpoints */ + + perf_counter_t _loop_perf; /**< loop performance counter */ + + unsigned _mission_items_maxcount; /**< maximum number of mission items supported */ + struct mission_item_s * _mission_items; /**< storage for mission items */ + bool _mission_valid; /**< flag if mission is valid */ + + /** manual control states */ + float _seatbelt_hold_heading; /**< heading the system should hold in seatbelt mode */ + float _loiter_hold_lat; + float _loiter_hold_lon; + float _loiter_hold_alt; + bool _loiter_hold; + + struct { + float throttle_cruise; + } _parameters; /**< local copies of interesting parameters */ + + struct { + param_t throttle_cruise; + + } _parameter_handles; /**< handles for interesting parameters */ + + + /** + * Update our local parameter cache. + */ + int parameters_update(); + + /** + * Update control outputs + * + */ + void control_update(); + + /** + * Check for changes in vehicle status. + */ + void vehicle_status_poll(); + + /** + * Check for position updates. + */ + void vehicle_attitude_poll(); + + /** + * Check for set triplet updates. + */ + void mission_poll(); + + /** + * Control throttle. + */ + float control_throttle(float energy_error); + + /** + * Control pitch. + */ + float control_pitch(float altitude_error); + + void calculate_airspeed_errors(); + void calculate_gndspeed_undershoot(); + void calculate_altitude_error(); + + /** + * Shim for calling task_main from task_create. + */ + static void task_main_trampoline(int argc, char *argv[]); + + /** + * Main sensor collection task. + */ + void task_main() __attribute__((noreturn)); +}; + +namespace navigator +{ + +/* oddly, ERROR is not defined for c++ */ +#ifdef ERROR +# undef ERROR +#endif +static const int ERROR = -1; + +Navigator *g_navigator; +} + +Navigator::Navigator() : + + _task_should_exit(false), + _navigator_task(-1), + +/* subscriptions */ + _global_pos_sub(-1), + _att_sub(-1), + _airspeed_sub(-1), + _vstatus_sub(-1), + _params_sub(-1), + _manual_control_sub(-1), + +/* publications */ + _triplet_pub(-1), + +/* performance counters */ + _loop_perf(perf_alloc(PC_ELAPSED, "navigator")), +/* states */ + _mission_items_maxcount(20), + _mission_valid(false), + _loiter_hold(false) +{ + _mission_items = (mission_item_s*)malloc(sizeof(mission_item_s) * _mission_items_maxcount); + if (!_mission_items) { + _mission_items_maxcount = 0; + warnx("no free RAM to allocate mission, rejecting any waypoints"); + } + + _parameter_handles.throttle_cruise = param_find("NAV_DUMMY"); + + /* fetch initial parameter values */ + parameters_update(); +} + +Navigator::~Navigator() +{ + if (_navigator_task != -1) { + + /* task wakes up every 100ms or so at the longest */ + _task_should_exit = true; + + /* wait for a second for the task to quit at our request */ + unsigned i = 0; + + do { + /* wait 20ms */ + usleep(20000); + + /* if we have given up, kill it */ + if (++i > 50) { + task_delete(_navigator_task); + break; + } + } while (_navigator_task != -1); + } + + navigator::g_navigator = nullptr; +} + +int +Navigator::parameters_update() +{ + + //param_get(_parameter_handles.throttle_cruise, &(_parameters.throttle_cruise)); + + return OK; +} + +void +Navigator::vehicle_status_poll() +{ + bool vstatus_updated; + + /* Check HIL state if vehicle status has changed */ + orb_check(_vstatus_sub, &vstatus_updated); + + if (vstatus_updated) { + + orb_copy(ORB_ID(vehicle_status), _vstatus_sub, &_vstatus); + } +} + +void +Navigator::vehicle_attitude_poll() +{ + /* check if there is a new position */ + bool att_updated; + orb_check(_att_sub, &att_updated); + + if (att_updated) { + orb_copy(ORB_ID(vehicle_attitude), _att_sub, &_att); + } +} + +void +Navigator::mission_poll() +{ + /* check if there is a new setpoint */ + bool mission_updated; + orb_check(_mission_sub, &mission_updated); + + if (mission_updated) { + + struct mission_s mission; + orb_copy(ORB_ID(mission), _mission_sub, &mission); + + // XXX this is not optimal yet, but a first prototype / + // test implementation + + if (mission.count <= _mission_items_maxcount) { + /* + * Perform an atomic copy & state update + */ + irqstate_t flags = irqsave(); + + memcpy(_mission_items, mission.items, mission.count * sizeof(struct mission_item_s)); + _mission_valid = true; + + irqrestore(flags); + } else { + warnx("mission larger than storage space"); + } + } +} + +void +Navigator::task_main_trampoline(int argc, char *argv[]) +{ + navigator::g_navigator->task_main(); +} + +void +Navigator::task_main() +{ + + /* inform about start */ + warnx("Initializing.."); + fflush(stdout); + + /* + * do subscriptions + */ + _global_pos_sub = orb_subscribe(ORB_ID(vehicle_global_position)); + _mission_sub = orb_subscribe(ORB_ID(mission)); + _att_sub = orb_subscribe(ORB_ID(vehicle_attitude)); + _airspeed_sub = orb_subscribe(ORB_ID(airspeed)); + _vstatus_sub = orb_subscribe(ORB_ID(vehicle_status)); + _params_sub = orb_subscribe(ORB_ID(parameter_update)); + _manual_control_sub = orb_subscribe(ORB_ID(manual_control_setpoint)); + + /* rate limit vehicle status updates to 5Hz */ + orb_set_interval(_vstatus_sub, 200); + /* rate limit position updates to 50 Hz */ + orb_set_interval(_global_pos_sub, 20); + + parameters_update(); + + /* wakeup source(s) */ + struct pollfd fds[2]; + + /* Setup of loop */ + fds[0].fd = _params_sub; + fds[0].events = POLLIN; + fds[1].fd = _global_pos_sub; + fds[1].events = POLLIN; + + while (!_task_should_exit) { + + /* wait for up to 500ms for data */ + int pret = poll(&fds[0], (sizeof(fds) / sizeof(fds[0])), 100); + + /* timed out - periodic check for _task_should_exit, etc. */ + if (pret == 0) + continue; + + /* this is undesirable but not much we can do - might want to flag unhappy status */ + if (pret < 0) { + warn("poll error %d, %d", pret, errno); + continue; + } + + perf_begin(_loop_perf); + + /* check vehicle status for changes to publication state */ + vehicle_status_poll(); + + /* only update parameters if they changed */ + if (fds[0].revents & POLLIN) { + /* read from param to clear updated flag */ + struct parameter_update_s update; + orb_copy(ORB_ID(parameter_update), _params_sub, &update); + + /* update parameters from storage */ + parameters_update(); + } + + /* only run controller if position changed */ + if (fds[1].revents & POLLIN) { + + + static uint64_t last_run = 0; + float deltaT = (hrt_absolute_time() - last_run) / 1000000.0f; + last_run = hrt_absolute_time(); + + /* guard against too large deltaT's */ + if (deltaT > 1.0f) + deltaT = 0.01f; + + /* load local copies */ + orb_copy(ORB_ID(vehicle_global_position), _global_pos_sub, &_global_pos); + + vehicle_attitude_poll(); + + mission_poll(); + + math::Vector2f ground_speed(_global_pos.vx, _global_pos.vy); + // Current waypoint + math::Vector2f next_wp(_global_triplet.current.lat / 1e7f, _global_triplet.current.lon / 1e7f); + // Global position + math::Vector2f current_position(_global_pos.lat / 1e7f, _global_pos.lon / 1e7f); + + /* AUTONOMOUS FLIGHT */ + + if (1 /* autonomous flight */) { + + /* execute navigation once we have a setpoint */ + if (_mission_valid) { + + // Next waypoint + math::Vector2f prev_wp; + + if (_global_triplet.previous_valid) { + prev_wp.setX(_global_triplet.previous.lat / 1e7f); + prev_wp.setY(_global_triplet.previous.lon / 1e7f); + + } else { + /* + * No valid next waypoint, go for heading hold. + * This is automatically handled by the L1 library. + */ + prev_wp.setX(_global_triplet.current.lat / 1e7f); + prev_wp.setY(_global_triplet.current.lon / 1e7f); + + } + + + + /******** MAIN NAVIGATION STATE MACHINE ********/ + + // XXX to be put in its own class + + if (_global_triplet.current.nav_cmd == NAV_CMD_WAYPOINT) { + /* waypoint is a plain navigation waypoint */ + + + } else if (_global_triplet.current.nav_cmd == NAV_CMD_LOITER_TURN_COUNT || + _global_triplet.current.nav_cmd == NAV_CMD_LOITER_TIME_LIMIT || + _global_triplet.current.nav_cmd == NAV_CMD_LOITER_UNLIMITED) { + + /* waypoint is a loiter waypoint */ + + } + + // XXX at this point we always want no loiter hold if a + // mission is active + _loiter_hold = false; + + } else { + + if (!_loiter_hold) { + _loiter_hold_lat = _global_pos.lat / 1e7f; + _loiter_hold_lon = _global_pos.lon / 1e7f; + _loiter_hold_alt = _global_pos.alt; + _loiter_hold = true; + } + + //_parameters.loiter_hold_radius + } + + } else if (0/* seatbelt mode enabled */) { + + /** SEATBELT FLIGHT **/ + continue; + + } else { + + /** MANUAL FLIGHT **/ + + /* no flight mode applies, do not publish an attitude setpoint */ + continue; + } + + /******** MAIN NAVIGATION STATE MACHINE ********/ + + if (_global_triplet.current.nav_cmd == NAV_CMD_RETURN_TO_LAUNCH) { + // XXX define launch position and return + + } else if (_global_triplet.current.nav_cmd == NAV_CMD_LAND) { + // XXX flared descent on final approach + + } else if (_global_triplet.current.nav_cmd == NAV_CMD_TAKEOFF) { + + /* apply minimum pitch if altitude has not yet been reached */ + if (_global_pos.alt < _global_triplet.current.altitude) { + _att_sp.pitch_body = math::max(_att_sp.pitch_body, _global_triplet.current.param1); + } + } + + /* lazily publish the setpoint only once available */ + if (_triplet_pub > 0) { + /* publish the attitude setpoint */ + orb_publish(ORB_ID(vehicle_global_position_set_triplet), _triplet_pub, &_global_triplet); + + } else { + /* advertise and publish */ + _triplet_pub = orb_advertise(ORB_ID(vehicle_global_position_set_triplet), &_global_triplet); + } + + } + + perf_end(_loop_perf); + } + + warnx("exiting.\n"); + + _navigator_task = -1; + _exit(0); +} + +int +Navigator::start() +{ + ASSERT(_navigator_task == -1); + + /* start the task */ + _navigator_task = task_spawn_cmd("navigator", + SCHED_DEFAULT, + SCHED_PRIORITY_MAX - 5, + 2048, + (main_t)&Navigator::task_main_trampoline, + nullptr); + + if (_navigator_task < 0) { + warn("task start failed"); + return -errno; + } + + return OK; +} + +int navigator_main(int argc, char *argv[]) +{ + if (argc < 1) + errx(1, "usage: navigator {start|stop|status}"); + + if (!strcmp(argv[1], "start")) { + + if (navigator::g_navigator != nullptr) + errx(1, "already running"); + + navigator::g_navigator = new Navigator; + + if (navigator::g_navigator == nullptr) + errx(1, "alloc failed"); + + if (OK != navigator::g_navigator->start()) { + delete navigator::g_navigator; + navigator::g_navigator = nullptr; + err(1, "start failed"); + } + + exit(0); + } + + if (!strcmp(argv[1], "stop")) { + if (navigator::g_navigator == nullptr) + errx(1, "not running"); + + delete navigator::g_navigator; + navigator::g_navigator = nullptr; + exit(0); + } + + if (!strcmp(argv[1], "status")) { + if (navigator::g_navigator) { + errx(0, "running"); + + } else { + errx(1, "not running"); + } + } + + warnx("unrecognized command"); + return 1; +} diff --git a/src/modules/navigator/navigator_params.c b/src/modules/navigator/navigator_params.c new file mode 100644 index 000000000..06df9a452 --- /dev/null +++ b/src/modules/navigator/navigator_params.c @@ -0,0 +1,53 @@ +/**************************************************************************** + * + * Copyright (c) 2013 PX4 Development Team. All rights reserved. + * Author: Lorenz Meier <lm@inf.ethz.ch> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name PX4 nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/** + * @file navigator_params.c + * + * Parameters defined by the navigator task. + * + * @author Lorenz Meier <lm@inf.ethz.ch> + */ + +#include <nuttx/config.h> + +#include <systemlib/param/param.h> + +/* + * Navigator parameters, accessible via MAVLink + * + */ + +PARAM_DEFINE_FLOAT(NAV_DUMMY, 0.0f); + diff --git a/src/modules/uORB/topics/vehicle_global_position.h b/src/modules/uORB/topics/vehicle_global_position.h index 0fc0ed5c9..143734e37 100644 --- a/src/modules/uORB/topics/vehicle_global_position.h +++ b/src/modules/uORB/topics/vehicle_global_position.h @@ -62,17 +62,17 @@ struct vehicle_global_position_s { uint64_t timestamp; /**< time of this estimate, in microseconds since system start */ - uint64_t time_gps_usec; /**< GPS timestamp in microseconds */ - bool valid; /**< true if position satisfies validity criteria of estimator */ + uint64_t time_gps_usec; /**< GPS timestamp in microseconds */ + bool valid; /**< true if position satisfies validity criteria of estimator */ int32_t lat; /**< Latitude in 1E7 degrees */ int32_t lon; /**< Longitude in 1E7 degrees */ - float alt; /**< Altitude in meters */ + float alt; /**< Altitude in meters */ float relative_alt; /**< Altitude above home position in meters, */ - float vx; /**< Ground X velocity, m/s in NED */ - float vy; /**< Ground Y velocity, m/s in NED */ - float vz; /**< Ground Z velocity, m/s in NED */ - float yaw; /**< Compass heading in radians -PI..+PI. */ + float vx; /**< Ground X velocity, m/s in NED */ + float vy; /**< Ground Y velocity, m/s in NED */ + float vz; /**< Ground Z velocity, m/s in NED */ + float yaw; /**< Compass heading in radians -PI..+PI. */ }; /** |