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px4-firmware/apps/commander/state_machine_helper.c

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/****************************************************************************
*
* Copyright (C) 2012 PX4 Development Team. All rights reserved.
* Author: Thomas Gubler <thomasgubler@student.ethz.ch>
* Julian Oes <joes@student.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 state_machine_helper.c
* State machine helper functions implementations
*/
#include <stdio.h>
#include <unistd.h>
#include <uORB/uORB.h>
#include <uORB/topics/vehicle_status.h>
#include <uORB/topics/actuator_controls.h>
#include <systemlib/systemlib.h>
#include <drivers/drv_hrt.h>
#include <mavlink/mavlink_log.h>
#include "state_machine_helper.h"
static const char* system_state_txt[] = {
"SYSTEM_STATE_PREFLIGHT",
"SYSTEM_STATE_STANDBY",
"SYSTEM_STATE_GROUND_READY",
"SYSTEM_STATE_MANUAL",
"SYSTEM_STATE_STABILIZED",
"SYSTEM_STATE_AUTO",
"SYSTEM_STATE_MISSION_ABORT",
"SYSTEM_STATE_EMCY_LANDING",
"SYSTEM_STATE_EMCY_CUTOFF",
"SYSTEM_STATE_GROUND_ERROR",
"SYSTEM_STATE_REBOOT",
};
/**
* Transition from one state to another
*/
int do_state_update(int status_pub, struct vehicle_status_s *current_status, const int mavlink_fd, commander_state_machine_t new_state)
{
int invalid_state = false;
int ret = ERROR;
commander_state_machine_t old_state = current_status->state_machine;
switch (new_state) {
case SYSTEM_STATE_MISSION_ABORT: {
/* Indoor or outdoor */
// if (flight_environment_parameter == PX4_FLIGHT_ENVIRONMENT_OUTDOOR) {
ret = do_state_update(status_pub, current_status, mavlink_fd, (commander_state_machine_t)SYSTEM_STATE_EMCY_LANDING);
// } else {
// ret = do_state_update(status_pub, current_status, mavlink_fd, (commander_state_machine_t)SYSTEM_STATE_EMCY_CUTOFF);
// }
}
break;
case SYSTEM_STATE_EMCY_LANDING:
/* Tell the controller to land */
/* set system flags according to state */
current_status->flag_system_armed = true;
fprintf(stderr, "[cmd] EMERGENCY LANDING!\n");
mavlink_log_critical(mavlink_fd, "[cmd] EMERGENCY LANDING!");
break;
case SYSTEM_STATE_EMCY_CUTOFF:
/* Tell the controller to cutoff the motors (thrust = 0) */
/* set system flags according to state */
current_status->flag_system_armed = false;
fprintf(stderr, "[cmd] EMERGENCY MOTOR CUTOFF!\n");
mavlink_log_critical(mavlink_fd, "[cmd] EMERGENCY MOTOR CUTOFF!");
break;
case SYSTEM_STATE_GROUND_ERROR:
/* set system flags according to state */
/* prevent actuators from arming */
current_status->flag_system_armed = false;
fprintf(stderr, "[cmd] GROUND ERROR, locking down propulsion system\n");
mavlink_log_critical(mavlink_fd, "[cmd] GROUND ERROR, locking down propulsion system");
break;
case SYSTEM_STATE_PREFLIGHT:
if (current_status->state_machine == SYSTEM_STATE_STANDBY
|| current_status->state_machine == SYSTEM_STATE_PREFLIGHT) {
/* set system flags according to state */
current_status->flag_system_armed = false;
mavlink_log_critical(mavlink_fd, "[cmd] Switched to PREFLIGHT state");
} else {
invalid_state = true;
mavlink_log_critical(mavlink_fd, "[cmd] REFUSED to switch to PREFLIGHT state");
}
break;
case SYSTEM_STATE_REBOOT:
if (current_status->state_machine == SYSTEM_STATE_STANDBY
|| current_status->state_machine == SYSTEM_STATE_PREFLIGHT) {
invalid_state = false;
/* set system flags according to state */
current_status->flag_system_armed = false;
mavlink_log_critical(mavlink_fd, "[cmd] REBOOTING SYSTEM");
usleep(500000);
up_systemreset();
/* SPECIAL CASE: NEVER RETURNS FROM THIS FUNCTION CALL */
} else {
invalid_state = true;
mavlink_log_critical(mavlink_fd, "[cmd] REFUSED to REBOOT");
}
break;
case SYSTEM_STATE_STANDBY:
/* set system flags according to state */
/* standby enforces disarmed */
current_status->flag_system_armed = false;
mavlink_log_critical(mavlink_fd, "[cmd] Switched to STANDBY state");
break;
case SYSTEM_STATE_GROUND_READY:
/* set system flags according to state */
/* ground ready has motors / actuators armed */
current_status->flag_system_armed = true;
mavlink_log_critical(mavlink_fd, "[cmd] Switched to GROUND READY state");
break;
case SYSTEM_STATE_AUTO:
/* set system flags according to state */
/* auto is airborne and in auto mode, motors armed */
current_status->flag_system_armed = true;
mavlink_log_critical(mavlink_fd, "[cmd] Switched to FLYING / AUTO mode");
break;
case SYSTEM_STATE_STABILIZED:
/* set system flags according to state */
current_status->flag_system_armed = true;
mavlink_log_critical(mavlink_fd, "[cmd] Switched to FLYING / STABILIZED mode");
break;
case SYSTEM_STATE_MANUAL:
/* set system flags according to state */
current_status->flag_system_armed = true;
mavlink_log_critical(mavlink_fd, "[cmd] Switched to FLYING / MANUAL mode");
break;
default:
invalid_state = true;
break;
}
if (invalid_state == false || old_state != new_state) {
current_status->state_machine = new_state;
state_machine_publish(status_pub, current_status, mavlink_fd);
publish_armed_status(current_status);
ret = OK;
}
if (invalid_state) {
mavlink_log_critical(mavlink_fd, "[cmd] REJECTING invalid state transition");
ret = ERROR;
}
return ret;
}
void state_machine_publish(int status_pub, struct vehicle_status_s *current_status, const int mavlink_fd) {
/* publish the new state */
current_status->counter++;
current_status->timestamp = hrt_absolute_time();
/* assemble state vector based on flag values */
if (current_status->flag_control_rates_enabled) {
current_status->onboard_control_sensors_present |= 0x400;
} else {
current_status->onboard_control_sensors_present &= ~0x400;
}
current_status->onboard_control_sensors_present |= (current_status->flag_control_attitude_enabled) ? 0x800 : 0;
current_status->onboard_control_sensors_present |= (current_status->flag_control_attitude_enabled) ? 0x1000 : 0;
current_status->onboard_control_sensors_present |= (current_status->flag_control_velocity_enabled || current_status->flag_control_position_enabled) ? 0x2000 : 0;
current_status->onboard_control_sensors_present |= (current_status->flag_control_velocity_enabled || current_status->flag_control_position_enabled) ? 0x4000 : 0;
current_status->onboard_control_sensors_enabled |= (current_status->flag_control_rates_enabled) ? 0x400 : 0;
current_status->onboard_control_sensors_enabled |= (current_status->flag_control_attitude_enabled) ? 0x800 : 0;
current_status->onboard_control_sensors_enabled |= (current_status->flag_control_attitude_enabled) ? 0x1000 : 0;
current_status->onboard_control_sensors_enabled |= (current_status->flag_control_velocity_enabled || current_status->flag_control_position_enabled) ? 0x2000 : 0;
current_status->onboard_control_sensors_enabled |= (current_status->flag_control_velocity_enabled || current_status->flag_control_position_enabled) ? 0x4000 : 0;
orb_publish(ORB_ID(vehicle_status), status_pub, current_status);
printf("[cmd] new state: %s\n", system_state_txt[current_status->state_machine]);
}
void publish_armed_status(const struct vehicle_status_s *current_status) {
struct actuator_armed_s armed;
armed.armed = current_status->flag_system_armed;
/* lock down actuators if required, only in HIL */
armed.lockdown = (current_status->flag_hil_enabled) ? true : false;
orb_advert_t armed_pub = orb_advertise(ORB_ID(actuator_armed), &armed);
orb_publish(ORB_ID(actuator_armed), armed_pub, &armed);
}
/*
* Private functions, update the state machine
*/
void state_machine_emergency_always_critical(int status_pub, struct vehicle_status_s *current_status, const int mavlink_fd)
{
fprintf(stderr, "[cmd] EMERGENCY HANDLER\n");
/* Depending on the current state go to one of the error states */
if (current_status->state_machine == SYSTEM_STATE_PREFLIGHT || current_status->state_machine == SYSTEM_STATE_STANDBY || current_status->state_machine == SYSTEM_STATE_GROUND_READY) {
do_state_update(status_pub, current_status, mavlink_fd, (commander_state_machine_t)SYSTEM_STATE_GROUND_ERROR);
} else if (current_status->state_machine == SYSTEM_STATE_AUTO || current_status->state_machine == SYSTEM_STATE_MANUAL) {
// DO NOT abort mission
//do_state_update(status_pub, current_status, mavlink_fd, (commander_state_machine_t)SYSTEM_STATE_MISSION_ABORT);
} else {
fprintf(stderr, "[cmd] Unknown system state: #%d\n", current_status->state_machine);
}
}
void state_machine_emergency(int status_pub, struct vehicle_status_s *current_status, const int mavlink_fd) //do not call state_machine_emergency_always_critical if we are in manual mode for these errors
{
if (current_status->state_machine != SYSTEM_STATE_MANUAL) { //if we are in manual: user can react to errors themself
state_machine_emergency_always_critical(status_pub, current_status, mavlink_fd);
} else {
//global_data_send_mavlink_statustext_message_out("[cmd] ERROR: take action immediately! (did not switch to error state because the system is in manual mode)", MAV_SEVERITY_CRITICAL);
}
}
// /*
// * Wrapper functions (to be used in the commander), all functions assume lock on current_status
// */
// /* These functions decide if an emergency exits and then switch to SYSTEM_STATE_MISSION_ABORT or SYSTEM_STATE_GROUND_ERROR
// *
// * START SUBSYSTEM/EMERGENCY FUNCTIONS
// * */
// void update_state_machine_subsystem_present(int status_pub, struct vehicle_status_s *current_status, subsystem_type_t *subsystem_type)
// {
// current_status->onboard_control_sensors_present |= 1 << *subsystem_type;
// current_status->counter++;
// current_status->timestamp = hrt_absolute_time();
// orb_publish(ORB_ID(vehicle_status), status_pub, current_status);
// }
// void update_state_machine_subsystem_notpresent(int status_pub, struct vehicle_status_s *current_status, subsystem_type_t *subsystem_type)
// {
// current_status->onboard_control_sensors_present &= ~(1 << *subsystem_type);
// current_status->counter++;
// current_status->timestamp = hrt_absolute_time();
// orb_publish(ORB_ID(vehicle_status), status_pub, current_status);
// /* if a subsystem was removed something went completely wrong */
// switch (*subsystem_type) {
// case SUBSYSTEM_TYPE_GYRO:
// //global_data_send_mavlink_statustext_message_out("Commander: gyro not present", MAV_SEVERITY_EMERGENCY);
// state_machine_emergency_always_critical(status_pub, current_status);
// break;
// case SUBSYSTEM_TYPE_ACC:
// //global_data_send_mavlink_statustext_message_out("Commander: accelerometer not present", MAV_SEVERITY_EMERGENCY);
// state_machine_emergency_always_critical(status_pub, current_status);
// break;
// case SUBSYSTEM_TYPE_MAG:
// //global_data_send_mavlink_statustext_message_out("Commander: magnetometer not present", MAV_SEVERITY_EMERGENCY);
// state_machine_emergency_always_critical(status_pub, current_status);
// break;
// case SUBSYSTEM_TYPE_GPS:
// {
// uint8_t flight_env = global_data_parameter_storage->pm.param_values[PARAM_FLIGHT_ENV];
// if (flight_env == PX4_FLIGHT_ENVIRONMENT_OUTDOOR) {
// //global_data_send_mavlink_statustext_message_out("Commander: GPS not present", MAV_SEVERITY_EMERGENCY);
// state_machine_emergency(status_pub, current_status);
// }
// }
// break;
// default:
// break;
// }
// }
// void update_state_machine_subsystem_enabled(int status_pub, struct vehicle_status_s *current_status, subsystem_type_t *subsystem_type)
// {
// current_status->onboard_control_sensors_enabled |= 1 << *subsystem_type;
// current_status->counter++;
// current_status->timestamp = hrt_absolute_time();
// orb_publish(ORB_ID(vehicle_status), status_pub, current_status);
// }
// void update_state_machine_subsystem_disabled(int status_pub, struct vehicle_status_s *current_status, subsystem_type_t *subsystem_type)
// {
// current_status->onboard_control_sensors_enabled &= ~(1 << *subsystem_type);
// current_status->counter++;
// current_status->timestamp = hrt_absolute_time();
// orb_publish(ORB_ID(vehicle_status), status_pub, current_status);
// /* if a subsystem was disabled something went completely wrong */
// switch (*subsystem_type) {
// case SUBSYSTEM_TYPE_GYRO:
// //global_data_send_mavlink_statustext_message_out("Commander: EMERGENCY - gyro disabled", MAV_SEVERITY_EMERGENCY);
// state_machine_emergency_always_critical(status_pub, current_status);
// break;
// case SUBSYSTEM_TYPE_ACC:
// //global_data_send_mavlink_statustext_message_out("Commander: EMERGENCY - accelerometer disabled", MAV_SEVERITY_EMERGENCY);
// state_machine_emergency_always_critical(status_pub, current_status);
// break;
// case SUBSYSTEM_TYPE_MAG:
// //global_data_send_mavlink_statustext_message_out("Commander: EMERGENCY - magnetometer disabled", MAV_SEVERITY_EMERGENCY);
// state_machine_emergency_always_critical(status_pub, current_status);
// break;
// case SUBSYSTEM_TYPE_GPS:
// {
// uint8_t flight_env = (uint8_t)(global_data_parameter_storage->pm.param_values[PARAM_FLIGHT_ENV]);
// if (flight_env == PX4_FLIGHT_ENVIRONMENT_OUTDOOR) {
// //global_data_send_mavlink_statustext_message_out("Commander: EMERGENCY - GPS disabled", MAV_SEVERITY_EMERGENCY);
// state_machine_emergency(status_pub, current_status);
// }
// }
// break;
// default:
// break;
// }
// }
// void update_state_machine_subsystem_healthy(int status_pub, struct vehicle_status_s *current_status, subsystem_type_t *subsystem_type)
// {
// current_status->onboard_control_sensors_health |= 1 << *subsystem_type;
// current_status->counter++;
// current_status->timestamp = hrt_absolute_time();
// orb_publish(ORB_ID(vehicle_status), status_pub, current_status);
// switch (*subsystem_type) {
// case SUBSYSTEM_TYPE_GYRO:
// //TODO state machine change (recovering)
// break;
// case SUBSYSTEM_TYPE_ACC:
// //TODO state machine change
// break;
// case SUBSYSTEM_TYPE_MAG:
// //TODO state machine change
// break;
// case SUBSYSTEM_TYPE_GPS:
// //TODO state machine change
// break;
// default:
// break;
// }
// }
// void update_state_machine_subsystem_unhealthy(int status_pub, struct vehicle_status_s *current_status, subsystem_type_t *subsystem_type)
// {
// bool previosly_healthy = (bool)(current_status->onboard_control_sensors_health & 1 << *subsystem_type);
// current_status->onboard_control_sensors_health &= ~(1 << *subsystem_type);
// current_status->counter++;
// current_status->timestamp = hrt_absolute_time();
// orb_publish(ORB_ID(vehicle_status), status_pub, current_status);
// /* if we received unhealthy message more than *_HEALTH_COUNTER_LIMIT, switch to error state */
// switch (*subsystem_type) {
// case SUBSYSTEM_TYPE_GYRO:
// //global_data_send_mavlink_statustext_message_out("Commander: gyro unhealthy", MAV_SEVERITY_CRITICAL);
// if (previosly_healthy) //only throw emergency if previously healthy
// state_machine_emergency_always_critical(status_pub, current_status);
// break;
// case SUBSYSTEM_TYPE_ACC:
// //global_data_send_mavlink_statustext_message_out("Commander: accelerometer unhealthy", MAV_SEVERITY_CRITICAL);
// if (previosly_healthy) //only throw emergency if previously healthy
// state_machine_emergency_always_critical(status_pub, current_status);
// break;
// case SUBSYSTEM_TYPE_MAG:
// //global_data_send_mavlink_statustext_message_out("Commander: magnetometer unhealthy", MAV_SEVERITY_CRITICAL);
// if (previosly_healthy) //only throw emergency if previously healthy
// state_machine_emergency_always_critical(status_pub, current_status);
// break;
// case SUBSYSTEM_TYPE_GPS:
// // //TODO: remove this block
// // break;
// // ///////////////////
// //global_data_send_mavlink_statustext_message_out("Commander: GPS unhealthy", MAV_SEVERITY_CRITICAL);
// // printf("previosly_healthy = %u\n", previosly_healthy);
// if (previosly_healthy) //only throw emergency if previously healthy
// state_machine_emergency(status_pub, current_status);
// break;
// default:
// break;
// }
// }
/* END SUBSYSTEM/EMERGENCY FUNCTIONS*/
void update_state_machine_got_position_fix(int status_pub, struct vehicle_status_s *current_status, const int mavlink_fd)
{
/* Depending on the current state switch state */
if (current_status->state_machine == SYSTEM_STATE_PREFLIGHT) {
do_state_update(status_pub, current_status, mavlink_fd, (commander_state_machine_t)SYSTEM_STATE_STANDBY);
}
}
void update_state_machine_no_position_fix(int status_pub, struct vehicle_status_s *current_status, const int mavlink_fd)
{
/* Depending on the current state switch state */
if (current_status->state_machine == SYSTEM_STATE_STANDBY || current_status->state_machine == SYSTEM_STATE_GROUND_READY || current_status->state_machine == SYSTEM_STATE_AUTO) {
state_machine_emergency(status_pub, current_status, mavlink_fd);
}
}
void update_state_machine_arm(int status_pub, struct vehicle_status_s *current_status, const int mavlink_fd)
{
if (current_status->state_machine == SYSTEM_STATE_STANDBY) {
printf("[cmd] arming\n");
do_state_update(status_pub, current_status, mavlink_fd, (commander_state_machine_t)SYSTEM_STATE_GROUND_READY);
}
}
void update_state_machine_disarm(int status_pub, struct vehicle_status_s *current_status, const int mavlink_fd)
{
if (current_status->state_machine == SYSTEM_STATE_GROUND_READY || current_status->state_machine == SYSTEM_STATE_MANUAL || current_status->state_machine == SYSTEM_STATE_PREFLIGHT) {
printf("[cmd] going standby\n");
do_state_update(status_pub, current_status, mavlink_fd, (commander_state_machine_t)SYSTEM_STATE_STANDBY);
} else if (current_status->state_machine == SYSTEM_STATE_STABILIZED || current_status->state_machine == SYSTEM_STATE_AUTO) {
printf("[cmd] MISSION ABORT!\n");
do_state_update(status_pub, current_status, mavlink_fd, (commander_state_machine_t)SYSTEM_STATE_STANDBY);
}
}
void update_state_machine_mode_manual(int status_pub, struct vehicle_status_s *current_status, const int mavlink_fd)
{
int old_mode = current_status->flight_mode;
current_status->flight_mode = VEHICLE_FLIGHT_MODE_MANUAL;
current_status->flag_control_manual_enabled = true;
/* enable attitude control per default */
current_status->flag_control_attitude_enabled = true;
current_status->flag_control_rates_enabled = true;
if (old_mode != current_status->flight_mode) state_machine_publish(status_pub, current_status, mavlink_fd);
if (current_status->state_machine == SYSTEM_STATE_GROUND_READY || current_status->state_machine == SYSTEM_STATE_STABILIZED || current_status->state_machine == SYSTEM_STATE_AUTO) {
printf("[cmd] manual mode\n");
do_state_update(status_pub, current_status, mavlink_fd, (commander_state_machine_t)SYSTEM_STATE_MANUAL);
}
}
void update_state_machine_mode_stabilized(int status_pub, struct vehicle_status_s *current_status, const int mavlink_fd)
{
if (!current_status->flag_vector_flight_mode_ok) {
mavlink_log_critical(mavlink_fd, "NO POS LOCK, REJ. STAB MODE");
return;
}
if (current_status->state_machine == SYSTEM_STATE_GROUND_READY || current_status->state_machine == SYSTEM_STATE_MANUAL || current_status->state_machine == SYSTEM_STATE_AUTO) {
printf("[cmd] stabilized mode\n");
int old_mode = current_status->flight_mode;
current_status->flight_mode = VEHICLE_FLIGHT_MODE_STAB;
current_status->flag_control_manual_enabled = false;
current_status->flag_control_attitude_enabled = true;
current_status->flag_control_rates_enabled = true;
do_state_update(status_pub, current_status, mavlink_fd, (commander_state_machine_t)SYSTEM_STATE_STABILIZED);
if (old_mode != current_status->flight_mode) state_machine_publish(status_pub, current_status, mavlink_fd);
}
}
void update_state_machine_mode_hold(int status_pub, struct vehicle_status_s *current_status, const int mavlink_fd)
{
if (!current_status->flag_vector_flight_mode_ok) {
mavlink_log_critical(mavlink_fd, "NO POS LOCK, REJ. HOLD MODE");
return;
}
if (current_status->state_machine == SYSTEM_STATE_GROUND_READY || current_status->state_machine == SYSTEM_STATE_MANUAL || current_status->state_machine == SYSTEM_STATE_AUTO) {
printf("[cmd] stabilized mode\n");
int old_mode = current_status->flight_mode;
current_status->flight_mode = VEHICLE_FLIGHT_MODE_HOLD;
current_status->flag_control_manual_enabled = false;
current_status->flag_control_attitude_enabled = true;
current_status->flag_control_rates_enabled = true;
do_state_update(status_pub, current_status, mavlink_fd, (commander_state_machine_t)SYSTEM_STATE_STABILIZED);
if (old_mode != current_status->flight_mode) state_machine_publish(status_pub, current_status, mavlink_fd);
}
}
void update_state_machine_mode_auto(int status_pub, struct vehicle_status_s *current_status, const int mavlink_fd)
{
if (!current_status->flag_vector_flight_mode_ok) {
mavlink_log_critical(mavlink_fd, "NO POS LOCK, REJ. AUTO MODE");
return;
}
if (current_status->state_machine == SYSTEM_STATE_GROUND_READY || current_status->state_machine == SYSTEM_STATE_MANUAL || current_status->state_machine == SYSTEM_STATE_STABILIZED) {
printf("[cmd] auto mode\n");
int old_mode = current_status->flight_mode;
current_status->flight_mode = VEHICLE_FLIGHT_MODE_AUTO;
current_status->flag_control_manual_enabled = false;
current_status->flag_control_attitude_enabled = true;
current_status->flag_control_rates_enabled = true;
do_state_update(status_pub, current_status, mavlink_fd, (commander_state_machine_t)SYSTEM_STATE_AUTO);
if (old_mode != current_status->flight_mode) state_machine_publish(status_pub, current_status, mavlink_fd);
}
}
uint8_t update_state_machine_mode_request(int status_pub, struct vehicle_status_s *current_status, const int mavlink_fd, uint8_t mode)
{
uint8_t ret = 1;
/* Switch on HIL if in standby and not already in HIL mode */
if ((mode & VEHICLE_MODE_FLAG_HIL_ENABLED)
&& !current_status->flag_hil_enabled) {
if ((current_status->state_machine == SYSTEM_STATE_STANDBY)) {
/* Enable HIL on request */
current_status->flag_hil_enabled = true;
ret = OK;
state_machine_publish(status_pub, current_status, mavlink_fd);
publish_armed_status(current_status);
printf("[cmd] Enabling HIL, locking down all actuators for safety.\n\t(Arming the system will not activate them while in HIL mode)\n");
} else if (current_status->state_machine != SYSTEM_STATE_STANDBY &&
current_status->flag_system_armed) {
mavlink_log_critical(mavlink_fd, "[cmd] REJECTING HIL, disarm first!")
} else {
mavlink_log_critical(mavlink_fd, "[cmd] REJECTING HIL, not in standby.")
}
}
/* switch manual / auto */
if (mode & VEHICLE_MODE_FLAG_AUTO_ENABLED) {
update_state_machine_mode_auto(status_pub, current_status, mavlink_fd);
} else if (mode & VEHICLE_MODE_FLAG_STABILIZED_ENABLED) {
update_state_machine_mode_stabilized(status_pub, current_status, mavlink_fd);
} else if (mode & VEHICLE_MODE_FLAG_MANUAL_INPUT_ENABLED) {
update_state_machine_mode_manual(status_pub, current_status, mavlink_fd);
}
/* vehicle is disarmed, mode requests arming */
if (!(current_status->flag_system_armed) && (mode & VEHICLE_MODE_FLAG_SAFETY_ARMED)) {
/* only arm in standby state */
// XXX REMOVE
if (current_status->state_machine == SYSTEM_STATE_STANDBY || current_status->state_machine == SYSTEM_STATE_PREFLIGHT) {
do_state_update(status_pub, current_status, mavlink_fd, (commander_state_machine_t)SYSTEM_STATE_GROUND_READY);
ret = OK;
printf("[cmd] arming due to command request\n");
}
}
/* vehicle is armed, mode requests disarming */
if (current_status->flag_system_armed && !(mode & VEHICLE_MODE_FLAG_SAFETY_ARMED)) {
/* only disarm in ground ready */
if (current_status->state_machine == SYSTEM_STATE_GROUND_READY) {
do_state_update(status_pub, current_status, mavlink_fd, (commander_state_machine_t)SYSTEM_STATE_STANDBY);
ret = OK;
printf("[cmd] disarming due to command request\n");
}
}
/* NEVER actually switch off HIL without reboot */
if (current_status->flag_hil_enabled && !(mode & VEHICLE_MODE_FLAG_HIL_ENABLED)) {
fprintf(stderr, "[cmd] DENYING request to switch off HIL. Please power cycle (safety reasons)\n");
mavlink_log_critical(mavlink_fd, "[cmd] Power-cycle to exit HIL");
ret = ERROR;
}
return ret;
}
uint8_t update_state_machine_custom_mode_request(int status_pub, struct vehicle_status_s *current_status, const int mavlink_fd, uint8_t custom_mode) //TODO: add more checks to avoid state switching in critical situations
{
commander_state_machine_t current_system_state = current_status->state_machine;
uint8_t ret = 1;
switch (custom_mode) {
case SYSTEM_STATE_GROUND_READY:
break;
case SYSTEM_STATE_STANDBY:
break;
case SYSTEM_STATE_REBOOT:
printf("try to reboot\n");
if (current_system_state == SYSTEM_STATE_STANDBY || current_system_state == SYSTEM_STATE_PREFLIGHT) {
printf("system will reboot\n");
mavlink_log_critical(mavlink_fd, "[cmd] Rebooting..");
usleep(200000);
do_state_update(status_pub, current_status, mavlink_fd, (commander_state_machine_t)SYSTEM_STATE_REBOOT);
ret = 0;
}
break;
case SYSTEM_STATE_AUTO:
printf("try to switch to auto/takeoff\n");
if (current_system_state == SYSTEM_STATE_GROUND_READY || current_system_state == SYSTEM_STATE_MANUAL) {
do_state_update(status_pub, current_status, mavlink_fd, (commander_state_machine_t)SYSTEM_STATE_AUTO);
printf("state: auto\n");
ret = 0;
}
break;
case SYSTEM_STATE_MANUAL:
printf("try to switch to manual\n");
if (current_system_state == SYSTEM_STATE_GROUND_READY || current_system_state == SYSTEM_STATE_AUTO) {
do_state_update(status_pub, current_status, mavlink_fd, (commander_state_machine_t)SYSTEM_STATE_MANUAL);
printf("state: manual\n");
ret = 0;
}
break;
default:
break;
}
return ret;
}
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