ardupilot/ArduSub/flight_mode.cpp

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#include "Sub.h"
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// change flight mode and perform any necessary initialisation
// returns true if mode was successfully set
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bool Sub::set_mode(control_mode_t mode, mode_reason_t reason)
{
// boolean to record if flight mode could be set
bool success = false;
// return immediately if we are already in the desired mode
if (mode == control_mode) {
prev_control_mode = control_mode;
prev_control_mode_reason = control_mode_reason;
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control_mode_reason = reason;
return true;
}
switch (mode) {
case ACRO:
success = acro_init();
break;
case STABILIZE:
success = stabilize_init();
break;
case ALT_HOLD:
success = althold_init();
break;
case AUTO:
success = auto_init();
break;
case CIRCLE:
success = circle_init();
break;
case GUIDED:
success = guided_init();
break;
case SURFACE:
success = surface_init();
break;
#if POSHOLD_ENABLED == ENABLED
case POSHOLD:
success = poshold_init();
break;
#endif
case MANUAL:
success = manual_init();
break;
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default:
success = false;
break;
}
// update flight mode
if (success) {
// perform any cleanup required by previous flight mode
exit_mode(control_mode, mode);
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prev_control_mode = control_mode;
prev_control_mode_reason = control_mode_reason;
control_mode = mode;
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control_mode_reason = reason;
logger.Write_Mode(control_mode, control_mode_reason);
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gcs().send_message(MSG_HEARTBEAT);
// update notify object
notify_flight_mode(control_mode);
#if CAMERA == ENABLED
camera.set_is_auto_mode(control_mode == AUTO);
#endif
#if AC_FENCE == ENABLED
// pilot requested flight mode change during a fence breach indicates pilot is attempting to manually recover
// this flight mode change could be automatic (i.e. fence, battery, GPS or GCS failsafe)
// but it should be harmless to disable the fence temporarily in these situations as well
fence.manual_recovery_start();
#endif
} else {
// Log error that we failed to enter desired flight mode
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AP::logger().Write_Error(LogErrorSubsystem::FLIGHT_MODE, LogErrorCode(mode));
}
// return success or failure
return success;
}
// update_flight_mode - calls the appropriate attitude controllers based on flight mode
// called at 100hz or more
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void Sub::update_flight_mode()
{
switch (control_mode) {
case ACRO:
acro_run();
break;
case STABILIZE:
stabilize_run();
break;
case ALT_HOLD:
althold_run();
break;
case AUTO:
auto_run();
break;
case CIRCLE:
circle_run();
break;
case GUIDED:
guided_run();
break;
case SURFACE:
surface_run();
break;
#if POSHOLD_ENABLED == ENABLED
case POSHOLD:
poshold_run();
break;
#endif
case MANUAL:
manual_run();
break;
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default:
break;
}
}
// exit_mode - high level call to organise cleanup as a flight mode is exited
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void Sub::exit_mode(control_mode_t old_control_mode, control_mode_t new_control_mode)
{
// stop mission when we leave auto mode
if (old_control_mode == AUTO) {
if (mission.state() == AP_Mission::MISSION_RUNNING) {
mission.stop();
}
#if MOUNT == ENABLED
camera_mount.set_mode_to_default();
#endif // MOUNT == ENABLED
}
}
// returns true or false whether mode requires GPS
bool Sub::mode_requires_GPS(control_mode_t mode)
{
switch (mode) {
case AUTO:
case GUIDED:
case CIRCLE:
case POSHOLD:
return true;
default:
return false;
}
return false;
}
// mode_has_manual_throttle - returns true if the flight mode has a manual throttle (i.e. pilot directly controls throttle)
bool Sub::mode_has_manual_throttle(control_mode_t mode)
{
switch (mode) {
case ACRO:
case STABILIZE:
case MANUAL:
return true;
default:
return false;
}
return false;
}
// mode_allows_arming - returns true if vehicle can be armed in the specified mode
// arming_from_gcs should be set to true if the arming request comes from the ground station
bool Sub::mode_allows_arming(control_mode_t mode, bool arming_from_gcs)
{
return (mode_has_manual_throttle(mode)
|| mode == ALT_HOLD
|| mode == POSHOLD
|| (arming_from_gcs&& mode == GUIDED)
);
}
// notify_flight_mode - sets notify object based on flight mode. Only used for OreoLED notify device
void Sub::notify_flight_mode(control_mode_t mode)
{
switch (mode) {
case AUTO:
case GUIDED:
case CIRCLE:
case SURFACE:
// autopilot modes
AP_Notify::flags.autopilot_mode = true;
break;
default:
// all other are manual flight modes
AP_Notify::flags.autopilot_mode = false;
break;
}
}