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cammander: state machine can now deny current state (e.g. when position lock lost during EASY mode), added FAILSAFE_STATE_LAND

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This commit is contained in:
Anton Babushkin
2014-01-26 11:50:34 +01:00
parent 062b64a1e2
commit c7f0553938
5 changed files with 148 additions and 52 deletions
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src/modules/commander/commander.cpp
+32 -3
View File
@@ -1143,7 +1143,7 @@ int commander_thread_main(int argc, char *argv[])
/* fill current_status according to mode switches */
check_mode_switches(&sp_man, &status);
/* evaluate the main state machine */
/* evaluate the main state machine according to mode switches */
res = check_main_state_machine(&status);
if (res == TRANSITION_CHANGED) {
@@ -1160,12 +1160,41 @@ int commander_thread_main(int argc, char *argv[])
status.rc_signal_lost = true;
status_changed = true;
}
if (status.main_state != MAIN_STATE_AUTO && armed.armed) {
if (status.main_state == MAIN_STATE_AUTO) {
/* check if AUTO mode still allowed */
transition_result_t res = main_state_transition(&status, MAIN_STATE_AUTO);
if (res == TRANSITION_DENIED) {
/* AUTO mode denied, don't try RTL, switch to failsafe state LAND */
res = failsafe_state_transition(&status, FAILSAFE_STATE_LAND);
if (res == TRANSITION_CHANGED) {
mavlink_log_critical(mavlink_fd, "#audio: failsafe: LAND");
} else if (res == TRANSITION_DENIED) {
/* LAND mode denied, switch to failsafe state TERMINATION */
transition_result_t res = failsafe_state_transition(&status, FAILSAFE_STATE_TERMINATION);
if (res == TRANSITION_CHANGED) {
mavlink_log_critical(mavlink_fd, "#audio: failsafe: TERMINATION");
}
}
}
} else if (armed.armed) {
/* failsafe for manual modes */
transition_result_t res = failsafe_state_transition(&status, FAILSAFE_STATE_RTL);
if (res == TRANSITION_CHANGED) {
mavlink_log_critical(mavlink_fd, "#audio: failsafe: RTL");
} else if (res == TRANSITION_DENIED) {
/* RTL not allowed (no global position estimate), try LAND */
res = failsafe_state_transition(&status, FAILSAFE_STATE_LAND);
if (res == TRANSITION_CHANGED) {
mavlink_log_critical(mavlink_fd, "#audio: failsafe: LAND");
} else if (res == TRANSITION_DENIED) {
res = failsafe_state_transition(&status, FAILSAFE_STATE_TERMINATION);
if (res == TRANSITION_CHANGED) {
mavlink_log_critical(mavlink_fd, "#audio: failsafe: TERMINATION");
}
}
}
// TODO add other failsafe modes if position estimate not available
}
}
}
src/modules/commander/state_machine_helper.cpp
+54 -45
View File
@@ -223,51 +223,50 @@ main_state_transition(struct vehicle_status_s *current_state, main_state_t new_m
{
transition_result_t ret = TRANSITION_DENIED;
/* only check transition if the new state is actually different from the current one */
if (new_main_state == current_state->main_state) {
ret = TRANSITION_NOT_CHANGED;
/* transition may be denied even if requested the same state because conditions may be changed */
switch (new_main_state) {
case MAIN_STATE_MANUAL:
ret = TRANSITION_CHANGED;
break;
} else {
case MAIN_STATE_SEATBELT:
switch (new_main_state) {
case MAIN_STATE_MANUAL:
/* need at minimum altitude estimate */
if (!current_state->is_rotary_wing ||
(current_state->condition_local_altitude_valid ||
current_state->condition_global_position_valid)) {
ret = TRANSITION_CHANGED;
break;
case MAIN_STATE_SEATBELT:
/* need at minimum altitude estimate */
if (!current_state->is_rotary_wing ||
(current_state->condition_local_altitude_valid ||
current_state->condition_global_position_valid)) {
ret = TRANSITION_CHANGED;
}
break;
case MAIN_STATE_EASY:
/* need at minimum local position estimate */
if (current_state->condition_local_position_valid ||
current_state->condition_global_position_valid) {
ret = TRANSITION_CHANGED;
}
break;
case MAIN_STATE_AUTO:
/* need global position estimate */
if (current_state->condition_global_position_valid) {
ret = TRANSITION_CHANGED;
}
break;
}
if (ret == TRANSITION_CHANGED) {
break;
case MAIN_STATE_EASY:
/* need at minimum local position estimate */
if (current_state->condition_local_position_valid ||
current_state->condition_global_position_valid) {
ret = TRANSITION_CHANGED;
}
break;
case MAIN_STATE_AUTO:
/* need global position estimate */
if (current_state->condition_global_position_valid) {
ret = TRANSITION_CHANGED;
}
break;
}
if (ret == TRANSITION_CHANGED) {
if (current_state->main_state != new_main_state) {
current_state->main_state = new_main_state;
main_state_changed = true;
} else {
ret = TRANSITION_NOT_CHANGED;
}
}
@@ -367,17 +366,22 @@ transition_result_t failsafe_state_transition(struct vehicle_status_s *status, f
{
transition_result_t ret = TRANSITION_DENIED;
/* only check transition if the new state is actually different from the current one */
if (new_failsafe_state == status->failsafe_state) {
ret = TRANSITION_NOT_CHANGED;
/* transition may be denied even if requested the same state because conditions may be changed */
if (status->failsafe_state == FAILSAFE_STATE_TERMINATION) {
/* transitions from TERMINATION to other states not allowed */
if (new_failsafe_state == FAILSAFE_STATE_TERMINATION) {
ret = TRANSITION_NOT_CHANGED;
}
} else if (status->failsafe_state != FAILSAFE_STATE_TERMINATION) {
} else {
switch (new_failsafe_state) {
case FAILSAFE_STATE_NORMAL:
ret = TRANSITION_CHANGED;
break;
case FAILSAFE_STATE_RTL:
ret = TRANSITION_CHANGED;
if (status->condition_global_position_valid) {
ret = TRANSITION_CHANGED;
}
break;
case FAILSAFE_STATE_TERMINATION:
ret = TRANSITION_CHANGED;
@@ -388,8 +392,13 @@ transition_result_t failsafe_state_transition(struct vehicle_status_s *status, f
}
if (ret == TRANSITION_CHANGED) {
status->failsafe_state = new_failsafe_state;
failsafe_state_changed = true;
if (status->failsafe_state != new_failsafe_state) {
status->failsafe_state = new_failsafe_state;
failsafe_state_changed = true;
} else {
ret = TRANSITION_NOT_CHANGED;
}
}
}