Make min ground speed setable a parameter

docs/Settings.md

@@ -3692,6 +3692,16 @@ When ON, NAV engine will slow down when switching to the next waypoint. This pri
 
 ---
 
+### nav_min_ground_speed
+
+Minimum ground speed for navigation flight modes [m/s]. Default 7 m/s.
+
+| Default | Min | Max |
+| --- | --- | --- |
+| 7 | 6 | 50 |
+
+---
+
 ### nav_min_rth_distance
 
 Minimum distance from homepoint when RTH full procedure will be activated [cm]. Below this distance, the mode will activate at the current location and the final phase is executed (loiter / land). Above this distance, the full procedure is activated, which may include initial climb and flying directly to the homepoint before entering the loiter / land phase.

src/main/fc/settings.yaml

@@ -2486,6 +2486,12 @@ groups:
         field: general.auto_speed
         min: 10
         max: 2000
+      - name: nav_min_ground_speed
+        description: "Minimum ground speed for navigation flight modes [m/s]. Default 7 m/s."
+        default_value: 7
+        field: general.min_ground_speed
+        min: 6
+        max: 50
       - name: nav_max_auto_speed
         description: "Maximum speed allowed in fully autonomous modes (RTH, WP) [cm/s] [Multirotor only]"
         default_value: 1000

src/main/navigation/navigation.c

@@ -97,7 +97,7 @@ STATIC_ASSERT(NAV_MAX_WAYPOINTS < 254, NAV_MAX_WAYPOINTS_exceeded_allowable_rang
 PG_REGISTER_ARRAY(navWaypoint_t, NAV_MAX_WAYPOINTS, nonVolatileWaypointList, PG_WAYPOINT_MISSION_STORAGE, 2);
 #endif
 
-PG_REGISTER_WITH_RESET_TEMPLATE(navConfig_t, navConfig, PG_NAV_CONFIG, 5);
+PG_REGISTER_WITH_RESET_TEMPLATE(navConfig_t, navConfig, PG_NAV_CONFIG, 6);
 
 PG_RESET_TEMPLATE(navConfig_t, navConfig,
     .general = {
@@ -132,6 +132,7 @@ PG_RESET_TEMPLATE(navConfig_t, navConfig,
 #endif
         .waypoint_load_on_boot = SETTING_NAV_WP_LOAD_ON_BOOT_DEFAULT,                           // load waypoints automatically during boot
         .auto_speed = SETTING_NAV_AUTO_SPEED_DEFAULT,                                           // speed in autonomous modes (3 m/s = 10.8 km/h)
+        .min_ground_speed = SETTING_NAV_MIN_GROUND_SPEED_DEFAULT,                               // Minimum ground speed (m/s) 
         .max_auto_speed = SETTING_NAV_MAX_AUTO_SPEED_DEFAULT,                                   // max allowed speed autonomous modes
         .max_auto_climb_rate = SETTING_NAV_AUTO_CLIMB_RATE_DEFAULT,                             // 5 m/s
         .max_manual_speed = SETTING_NAV_MANUAL_SPEED_DEFAULT,

src/main/navigation/navigation.h

@@ -245,6 +245,7 @@ typedef struct navConfig_s {
 #endif
         bool     waypoint_load_on_boot;             // load waypoints automatically during boot
         uint16_t auto_speed;                        // autonomous navigation speed cm/sec
+        uint8_t  min_ground_speed;                  // Minimum navigation ground speed [m/s]
         uint16_t max_auto_speed;                    // maximum allowed autonomous navigation speed cm/sec
         uint16_t max_auto_climb_rate;               // max vertical speed limitation cm/sec
         uint16_t max_manual_speed;                  // manual velocity control max horizontal speed

src/main/navigation/navigation_fixedwing.c

@@ -60,9 +60,8 @@
 #define NAV_FW_BASE_PITCH_CUTOFF_FREQUENCY_HZ     2.0f
 #define NAV_FW_BASE_ROLL_CUTOFF_FREQUENCY_HZ     10.0f
 
-// If we are going slower than NAV_FW_MIN_VEL_SPEED_BOOST - boost throttle to fight against the wind
+// If we are going slower than the minimum ground speed (navConfig()->general.min_ground_speed) - boost throttle to fight against the wind
 #define NAV_FW_THROTTLE_SPEED_BOOST_GAIN        1.5f
-#define NAV_FW_MIN_VEL_SPEED_BOOST              700.0f      // 7 m/s
 
 // If this is enabled navigation won't be applied if velocity is below 3 m/s
 //#define NAV_FW_LIMIT_MIN_FLY_VELOCITY
@@ -552,10 +551,10 @@ int16_t applyFixedWingMinSpeedController(timeUs_t currentTimeUs)
             previousTimePositionUpdate = currentTimeUs;
 
             if (deltaMicrosPositionUpdate < MAX_POSITION_UPDATE_INTERVAL_US) {
-                float velThrottleBoost = (NAV_FW_MIN_VEL_SPEED_BOOST - posControl.actualState.velXY) * NAV_FW_THROTTLE_SPEED_BOOST_GAIN * US2S(deltaMicrosPositionUpdate);
+                float velThrottleBoost = ((navConfig()->general.min_ground_speed * 100.0f) - posControl.actualState.velXY) * NAV_FW_THROTTLE_SPEED_BOOST_GAIN * US2S(deltaMicrosPositionUpdate);
 
                 // If we are in the deadband of 50cm/s - don't update speed boost
-                if (fabsf(posControl.actualState.velXY - NAV_FW_MIN_VEL_SPEED_BOOST) > 50) {
+                if (fabsf(posControl.actualState.velXY - (navConfig()->general.min_ground_speed * 100.0f)) > 50) {
                     throttleSpeedAdjustment += velThrottleBoost;
                 }
 

src/main/sensors/battery.c

@@ -134,7 +134,6 @@ void pgResetFn_batteryProfiles(batteryProfile_t *instance)
             .failsafe_throttle = SETTING_FAILSAFE_THROTTLE_DEFAULT,                                 // default throttle off.
 
             .nav = {
-
                 .mc = {
                     .hover_throttle = SETTING_NAV_MC_HOVER_THR_DEFAULT,
                 },
@@ -147,7 +146,6 @@ void pgResetFn_batteryProfiles(batteryProfile_t *instance)
                     .launch_throttle = SETTING_NAV_FW_LAUNCH_THR_DEFAULT,
                     .launch_idle_throttle = SETTING_NAV_FW_LAUNCH_IDLE_THR_DEFAULT,                 // Motor idle or MOTOR_STOP
                 }
-
             },
 
 #if defined(USE_POWER_LIMITS)