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Enable Fixed Wing Auto Speed During Waypoint Mission #11757

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Enable Fixed Wing Auto Speed During Waypoint Mission #11757

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acfd1cd
enable fw autospeed from wp mode
breadoven Jul 30, 2026
0cd74ce
fixes
breadoven Aug 2, 2026
5470b9e
Update Navigation.md
breadoven Aug 3, 2026
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2 changes: 1 addition & 1 deletion src/main/io/osd.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1992,7 +1992,7 @@ static bool osdDrawSingleElement(uint8_t item)
break;

case OSD_AUTO_SPEED:
if (IS_RC_MODE_ACTIVE(BOXAUTOSPEED)) {
if (IS_RC_MODE_ACTIVE(BOXAUTOSPEED) || isFixedwingAutoSpeedActive()) {
buff[0] = posControl.autoSpeedSpdSource == FW_AUTO_SPD_GROUND ? 'G' : 'A';
strcpy(buff + 1, ": OFF");
if (isFixedwingAutoSpeedActive()) {
Expand Down
40 changes: 22 additions & 18 deletions src/main/navigation/navigation.c
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Original file line number Diff line number Diff line change
Expand Up @@ -4320,28 +4320,32 @@ bool isNavHoldPositionActive(void)

float getActiveSpeed(void)
{
/* Currently only applicable for multicopter */
uint16_t waypointSpeed = 0;

// Speed limit for modes where speed manually controlled
if (posControl.flags.isAdjustingPosition || FLIGHT_MODE(NAV_COURSE_HOLD_MODE)) {
return navConfig()->general.max_manual_speed;
if (STATE(MULTIROTOR)) {
// Speed limit for modes where speed manually controlled
if (posControl.flags.isAdjustingPosition || FLIGHT_MODE(NAV_COURSE_HOLD_MODE)) {
return navConfig()->general.max_manual_speed;
}
waypointSpeed = navConfig()->general.auto_speed;
}

uint16_t waypointSpeed = navConfig()->general.auto_speed;
if (navGetStateFlags(posControl.navState) & NAV_AUTO_WP && posControl.waypointCount > 0 &&
(posControl.waypointList[posControl.activeWaypointIndex].action == NAV_WP_ACTION_WAYPOINT ||
posControl.waypointList[posControl.activeWaypointIndex].action == NAV_WP_ACTION_HOLD_TIME ||
posControl.waypointList[posControl.activeWaypointIndex].action == NAV_WP_ACTION_LAND)) {

if (navGetStateFlags(posControl.navState) & NAV_AUTO_WP) {
if (posControl.waypointCount > 0 && (posControl.waypointList[posControl.activeWaypointIndex].action == NAV_WP_ACTION_WAYPOINT || posControl.waypointList[posControl.activeWaypointIndex].action == NAV_WP_ACTION_HOLD_TIME || posControl.waypointList[posControl.activeWaypointIndex].action == NAV_WP_ACTION_LAND)) {
float wpSpecificSpeed = 0.0f;
if(posControl.waypointList[posControl.activeWaypointIndex].action == NAV_WP_ACTION_HOLD_TIME)
wpSpecificSpeed = posControl.waypointList[posControl.activeWaypointIndex].p2; // P1 is hold time
else
wpSpecificSpeed = posControl.waypointList[posControl.activeWaypointIndex].p1; // default case
uint16_t wpSpecificSpeed = 0;
if (posControl.waypointList[posControl.activeWaypointIndex].action == NAV_WP_ACTION_HOLD_TIME) {
wpSpecificSpeed = posControl.waypointList[posControl.activeWaypointIndex].p2; // P1 is hold time
} else {
wpSpecificSpeed = posControl.waypointList[posControl.activeWaypointIndex].p1; // default case
}

if (wpSpecificSpeed >= 50.0f && wpSpecificSpeed <= navConfig()->general.max_auto_speed) {
waypointSpeed = wpSpecificSpeed;
} else if (wpSpecificSpeed > navConfig()->general.max_auto_speed) {
waypointSpeed = navConfig()->general.max_auto_speed;
}
if (STATE(AIRPLANE)) {
return wpSpecificSpeed;
} else if (wpSpecificSpeed >= 50) { // min allowed speed of 0.5 m/s for multirotor
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return MIN(wpSpecificSpeed, navConfig()->general.max_auto_speed);
}
}

Expand Down Expand Up @@ -4446,11 +4450,11 @@ void applyWaypointNavigationAndAltitudeHold(void)
applyRoverBoatNavigationController(navStateFlags, currentTimeUs);
} else if (STATE(FIXED_WING_LEGACY)) {
applyFixedWingNavigationController(navStateFlags, currentTimeUs);
applyAutoSpeedThrottleDemand(&rcCommand[THROTTLE], currentTimeUs);
}
else {
applyMulticopterNavigationController(navStateFlags, currentTimeUs);
}
applyAutoSpeedThrottleDemand(&rcCommand[THROTTLE], currentTimeUs);

/* Consume position data */
if (posControl.flags.horizontalPositionDataConsumed)
Expand Down
43 changes: 36 additions & 7 deletions src/main/navigation/navigation_fixedwing.c
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Expand Up @@ -74,6 +74,7 @@ static bool isAutoThrottleManuallyIncreased = false;
static float navCrossTrackError;
static int8_t loiterDirYaw = 1;
bool needToCalculateCircularLoiter;
bool autoSpeedIsActive = false;
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Outdated

// Calculates the cutoff frequency for smoothing out roll/pitch commands
// control_smoothness valid range from 0 to 9
Expand Down Expand Up @@ -887,18 +888,38 @@ void applyFixedWingEmergencyLandingController(timeUs_t currentTimeUs)
* Auto Speed mode control
*-----------------------------------------------------------*/
bool isFixedwingAutoSpeedActive(void)
{
return autoSpeedIsActive;
}
Comment on lines 890 to +893

@qodo-code-review qodo-code-review Bot Aug 1, 2026

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Action required

1. Stale autospeed active flag 🐞 Bug ≡ Correctness

isFixedwingAutoSpeedActive() now returns a cached flag that is only updated inside
applyAutoSpeedThrottleDemand(), but fixed-wing throttle logic checks isFixedwingAutoSpeedActive()
earlier in the same navigation loop. When Auto Speed becomes disabled, the fixed-wing controller can
incorrectly skip its normal throttle path for one cycle, leaving rcCommand[THROTTLE] without the
expected nav throttle control for that iteration.
Agent Prompt 
### Issue description
`isFixedwingAutoSpeedActive()` now returns a cached variable (`autoSpeedIsActive`) that is only set/cleared inside `applyAutoSpeedThrottleDemand()`. But the fixed-wing nav controller consults `isFixedwingAutoSpeedActive()` before `applyAutoSpeedThrottleDemand()` is called in the same control loop, so it can use stale state (especially on disable), skipping its normal throttle update for one loop.

### Issue Context
`applyFixedWingPitchRollThrottleController()` uses `isFixedwingAutoSpeedActive()` to decide whether to run the normal throttle correction path. `applyAutoSpeedThrottleDemand()` (which updates `autoSpeedIsActive`) is invoked after the fixed-wing controller from `applyWaypointNavigationAndAltitudeHold()`.

### Fix Focus Areas
- src/main/navigation/navigation_fixedwing.c[890-923]
- src/main/navigation/navigation_fixedwing.c[674-735]
- src/main/navigation/navigation.c[4447-4458]

### Proposed fix
Make `isFixedwingAutoSpeedActive()` reflect the *current* enablement conditions (e.g., `STATE(AIRPLANE) && isAutoSpeedEnabled()`), not a cached value updated later. If you still need a cached “last applied” flag for OSD/telemetry, keep it separate (e.g., `autoSpeedWasAppliedThisLoop`) and don’t use it for control-path gating.

ⓘ Copy this prompt and use it to remediate the issue with your preferred AI generation tools


static int8_t isAutoSpeedRequiredByNav(void)
{
int8_t result = -1;
if (FLIGHT_MODE(NAV_WP_MODE) && getActiveSpeed() > 0) {
result = FW_AUTO_SPD_GROUND;
}

return result;
}

static bool isAutoSpeedEnabled(void)
{
bool thrStickEmergStop = navConfig()->fw.auto_speed_channel != (THROTTLE + 1) && throttleStickIsLow();
bool autoSpeedRequested = IS_RC_MODE_ACTIVE(BOXAUTOSPEED) || isAutoSpeedRequiredByNav() >= 0;

return STATE(AIRPLANE) && ARMING_FLAG(ARMED) && IS_RC_MODE_ACTIVE(BOXAUTOSPEED) && isProbablyStillFlying() && !thrStickEmergStop &&
!FLIGHT_MODE(FAILSAFE_MODE) && !FLIGHT_MODE(SOARING_MODE) && !FLIGHT_MODE(MANUAL_MODE) &&
posControl.flags.estVelStatus == EST_TRUSTED && posControl.flags.estAltStatus == EST_TRUSTED &&
!(navigationRequiresAutoThrottleMode() && !(navGetCurrentStateFlags() & NAV_CTL_SPEED));
return ARMING_FLAG(ARMED) && autoSpeedRequested && isProbablyStillFlying() && !thrStickEmergStop &&
!FLIGHT_MODE(FAILSAFE_MODE) && !FLIGHT_MODE(SOARING_MODE) && !FLIGHT_MODE(MANUAL_MODE) &&
posControl.flags.estVelStatus == EST_TRUSTED && posControl.flags.estAltStatus == EST_TRUSTED &&
!(navigationRequiresAutoThrottleMode() && !(navGetCurrentStateFlags() & NAV_CTL_SPEED));
}

void applyAutoSpeedThrottleDemand(int16_t *throttleCommand, timeUs_t currentTimeUs)
{
if (!isFixedwingAutoSpeedActive()) return;
if (!STATE(AIRPLANE) || !isAutoSpeedEnabled()) {
autoSpeedIsActive = false;
return;
}
autoSpeedIsActive = true;

static uint16_t autoSpeedThrottleCommand = PWM_RANGE_MIDDLE;

Expand All @@ -918,16 +939,24 @@ void applyAutoSpeedThrottleDemand(int16_t *throttleCommand, timeUs_t currentTime
uint16_t minThrottle = MAX(getThrottleIdleValue(), currentBatteryProfile->nav.fw.min_throttle);
uint16_t maxThrottle = currentBatteryProfile->nav.fw.max_throttle;

posControl.desiredState.autoSpeedDemand = scaleRange(rxGetChannelValue(navConfig()->fw.auto_speed_channel - 1), PWM_RANGE_MIN, PWM_RANGE_MAX, minSpeed, maxSpeed);
bool useAirSpeed = !LOGIC_CONDITION_GLOBAL_FLAG(LOGIC_CONDITION_GLOBAL_FLAG_DISABLE_AUTOSPEED_AIRSPEED);
if (IS_RC_MODE_ACTIVE(BOXAUTOSPEED)) {
posControl.desiredState.autoSpeedDemand = scaleRange(rxGetChannelValue(navConfig()->fw.auto_speed_channel - 1), PWM_RANGE_MIN, PWM_RANGE_MAX, minSpeed, maxSpeed);
} else {
posControl.desiredState.autoSpeedDemand = constrain(getActiveSpeed(), minSpeed, maxSpeed);
useAirSpeed = isAutoSpeedRequiredByNav() == FW_AUTO_SPD_AIR;
}

uint16_t actualSpeed = posControl.actualState.vel3D;
posControl.autoSpeedSpdSource = FW_AUTO_SPD_GROUND;
uint16_t groundSpeedBoost = 0;

#ifdef USE_PITOT
if (pitotValidateAirspeed()) {
static bool airspeedBoost = false;

// Pitot available and airspeed source selected or low airspeed boost applied when using ground speed source
if (!LOGIC_CONDITION_GLOBAL_FLAG(LOGIC_CONDITION_GLOBAL_FLAG_DISABLE_AUTOSPEED_AIRSPEED) || airspeedBoost) {
if (useAirSpeed || airspeedBoost) {
actualSpeed = getAirspeedEstimate();
if (airspeedBoost && actualSpeed > minSpeed) {
airspeedBoost = false;
Expand Down
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