Strange behaviour on failsafe recovery

[brat002]

There are regression in 1.7. 1.6.1 was not affected this.

Inav 1.7 RC Sparky 2 dsmx satellite

On rc failsafe recovery a plane becomes uncontrollable and just falls to the ground. This happens 3-5 seconds and then plane restores control and stabilisation.

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dump

version

INAV/SPARKY2 1.7.0 Apr 19 2017 / 09:32:55 (65cbad0)

resources

mixer

mixer FLYING_WING

mmix reset

servo

servo 0 1000 2000 1500 100 -1 servo 1 1000 2000 1500 100 -1 servo 2 1000 2000 1500 100 -1 servo 3 1000 2000 1500 -100 -1 servo 4 1000 2000 1400 100 -1 servo 5 1000 2000 1500 100 -1 servo 6 1000 2000 1500 100 -1 servo 7 1000 2000 1500 100 -1

servo mix

smix reset

feature

feature -RX_PPM feature -VBAT feature -RX_SERIAL feature -MOTOR_STOP feature -SERVO_TILT feature -SOFTSERIAL feature -GPS feature -TELEMETRY feature -CURRENT_METER feature -3D feature -RX_PARALLEL_PWM feature -RX_MSP feature -RSSI_ADC feature -LED_STRIP feature -DASHBOARD feature -BLACKBOX feature -CHANNEL_FORWARDING feature -TRANSPONDER feature -AIRMODE feature -SUPEREXPO feature -VTX feature -RX_SPI feature -SOFTSPI feature -PWM_SERVO_DRIVER feature -PWM_OUTPUT_ENABLE feature -OSD feature RX_SERIAL feature GPS feature TELEMETRY feature PWM_OUTPUT_ENABLE

beeper

beeper GYRO_CALIBRATED beeper HW_FAILURE beeper RX_LOST beeper RX_LOST_LANDING beeper DISARMING beeper ARMING beeper ARMING_GPS_FIX beeper BAT_CRIT_LOW beeper BAT_LOW beeper GPS_STATUS beeper RX_SET beeper ACTION_SUCCESS beeper ACTION_FAIL beeper READY_BEEP beeper MULTI_BEEPS beeper DISARM_REPEAT beeper ARMED beeper SYSTEM_INIT beeper ON_USB beeper LAUNCH_MODE

map

map TAER1234

serial

serial 20 1 115200 38400 0 115200 serial 0 1 115200 38400 0 115200 serial 2 2 115200 57600 0 115200 serial 5 64 115200 38400 0 115200

led

led 0 0,0::C:0 led 1 0,0::C:0 led 2 0,0::C:0 led 3 0,0::C:0 led 4 0,0::C:0 led 5 0,0::C:0 led 6 0,0::C:0 led 7 0,0::C:0 led 8 0,0::C:0 led 9 0,0::C:0 led 10 0,0::C:0 led 11 0,0::C:0 led 12 0,0::C:0 led 13 0,0::C:0 led 14 0,0::C:0 led 15 0,0::C:0 led 16 0,0::C:0 led 17 0,0::C:0 led 18 0,0::C:0 led 19 0,0::C:0 led 20 0,0::C:0 led 21 0,0::C:0 led 22 0,0::C:0 led 23 0,0::C:0 led 24 0,0::C:0 led 25 0,0::C:0 led 26 0,0::C:0 led 27 0,0::C:0 led 28 0,0::C:0 led 29 0,0::C:0 led 30 0,0::C:0 led 31 0,0::C:0

color

color 0 0,0,0 color 1 0,255,255 color 2 0,0,255 color 3 30,0,255 color 4 60,0,255 color 5 90,0,255 color 6 120,0,255 color 7 150,0,255 color 8 180,0,255 color 9 210,0,255 color 10 240,0,255 color 11 270,0,255 color 12 300,0,255 color 13 330,0,255 color 14 0,0,0 color 15 0,0,0

mode_color

mode_color 0 0 1 mode_color 0 1 11 mode_color 0 2 2 mode_color 0 3 13 mode_color 0 4 10 mode_color 0 5 3 mode_color 1 0 5 mode_color 1 1 11 mode_color 1 2 3 mode_color 1 3 13 mode_color 1 4 10 mode_color 1 5 3 mode_color 2 0 10 mode_color 2 1 11 mode_color 2 2 4 mode_color 2 3 13 mode_color 2 4 10 mode_color 2 5 3 mode_color 3 0 8 mode_color 3 1 11 mode_color 3 2 4 mode_color 3 3 13 mode_color 3 4 10 mode_color 3 5 3 mode_color 4 0 7 mode_color 4 1 11 mode_color 4 2 3 mode_color 4 3 13 mode_color 4 4 10 mode_color 4 5 3 mode_color 5 0 9 mode_color 5 1 11 mode_color 5 2 2 mode_color 5 3 13 mode_color 5 4 10 mode_color 5 5 3 mode_color 6 0 6 mode_color 6 1 10 mode_color 6 2 1 mode_color 6 3 0 mode_color 6 4 0 mode_color 6 5 2 mode_color 6 6 3 mode_color 6 7 6 mode_color 6 8 0 mode_color 6 9 0 mode_color 6 10 0

aux

aux 0 0 1 1300 1700 aux 1 1 0 1025 1350 aux 2 20 0 1000 2025 aux 3 8 2 1050 1350 aux 4 28 0 1675 2025 aux 5 0 0 900 900 aux 6 0 0 900 900 aux 7 0 0 900 900 aux 8 0 0 900 900 aux 9 0 0 900 900 aux 10 0 0 900 900 aux 11 0 0 900 900 aux 12 0 0 900 900 aux 13 0 0 900 900 aux 14 0 0 900 900 aux 15 0 0 900 900 aux 16 0 0 900 900 aux 17 0 0 900 900 aux 18 0 0 900 900 aux 19 0 0 900 900

adjrange

adjrange 0 0 0 900 900 0 0 adjrange 1 0 0 900 900 0 0 adjrange 2 0 0 900 900 0 0 adjrange 3 0 0 900 900 0 0 adjrange 4 0 0 900 900 0 0 adjrange 5 0 0 900 900 0 0 adjrange 6 0 0 900 900 0 0 adjrange 7 0 0 900 900 0 0 adjrange 8 0 0 900 900 0 0 adjrange 9 0 0 900 900 0 0 adjrange 10 0 0 900 900 0 0 adjrange 11 0 0 900 900 0 0

rxrange

rxrange 0 1000 2000 rxrange 1 1000 2000 rxrange 2 1000 2000 rxrange 3 1000 2000

master

set looptime = 2000 set gyro_sync = ON set gyro_sync_denom = 2 set align_gyro = DEFAULT set gyro_hardware_lpf = 20HZ set gyro_lpf_hz = 60 set moron_threshold = 32 set gyro_notch1_hz = 0 set gyro_notch1_cutoff = 1 set gyro_notch2_hz = 0 set gyro_notch2_cutoff = 1 set align_acc = DEFAULT set acc_hardware = MPU6500 set acc_lpf_hz = 15 set acczero_x = 19 set acczero_y = 58 set acczero_z = -141 set accgain_x = 4092 set accgain_y = 4081 set accgain_z = 4049 set align_mag = DEFAULT set mag_hardware = NONE set mag_declination = 0 set magzero_x = 55 set magzero_y = 114 set magzero_z = -45 set mag_calibration_time = 30 set baro_hardware = NONE set baro_use_median_filter = ON set mid_rc = 1500 set min_check = 1100 set max_check = 1900 set rssi_channel = 0 set rssi_scale = 30 set rssi_invert = OFF set rc_smoothing = ON set serialrx_provider = SPEK1024 set sbus_inversion = ON set rx_min_usec = 885 set rx_max_usec = 2115 set serialrx_halfduplex = OFF set blackbox_rate_num = 1 set blackbox_rate_denom = 1 set blackbox_device = SERIAL set min_throttle = 1142 set max_throttle = 2000 set min_command = 1000 set motor_pwm_rate = 50 set motor_pwm_protocol = STANDARD set failsafe_delay = 5 set failsafe_recovery_delay = 5 set failsafe_off_delay = 200 set failsafe_throttle = 1000 set failsafe_throttle_low_delay = 100 set failsafe_procedure = RTH set failsafe_stick_threshold = 10 set failsafe_fw_roll_angle = -200 set failsafe_fw_pitch_angle = 100 set failsafe_fw_yaw_rate = -45 set align_board_roll = 0 set align_board_pitch = 80 set align_board_yaw = 0 set gimbal_mode = NORMAL set battery_capacity = 0 set vbat_scale = 110 set vbat_max_cell_voltage = 43 set vbat_min_cell_voltage = 33 set vbat_warning_cell_voltage = 35 set current_meter_scale = 400 set current_meter_offset = 0 set multiwii_current_meter_output = OFF set current_meter_type = ADC set yaw_motor_direction = 1 set yaw_jump_prevention_limit = 200 set 3d_deadband_low = 1406 set 3d_deadband_high = 1514 set 3d_neutral = 1460 set servo_center_pulse = 1500 set servo_pwm_rate = 50 set servo_lpf_hz = 20 set flaperon_throw_offset = 250 set tri_unarmed_servo = ON set reboot_character = 82 set imu_dcm_kp = 2500 set imu_dcm_ki = 50 set imu_dcm_kp_mag = 10000 set imu_dcm_ki_mag = 0 set small_angle = 180 set fixed_wing_auto_arm = OFF set disarm_kill_switch = OFF set auto_disarm_delay = 5 set gps_provider = UBLOX set gps_sbas_mode = AUTO set gps_dyn_model = AIR_1G set gps_auto_config = ON set gps_auto_baud = ON set gps_min_sats = 5 set deadband = 7 set yaw_deadband = 7 set pos_hold_deadband = 20 set alt_hold_deadband = 50 set 3d_deadband_throttle = 50 set fw_autotune_overshoot_time = 100 set fw_autotune_undershoot_time = 200 set fw_autotune_threshold = 50 set fw_autotune_ff_to_p_gain = 10 set fw_autotune_ff_to_i_tc = 600 set inav_auto_mag_decl = ON set inav_gravity_cal_tolerance = 5 set inav_use_gps_velned = ON set inav_gps_delay = 200 set inav_reset_altitude = FIRST_ARM set inav_max_sonar_altitude = 200 set inav_w_z_sonar_p = 3.500 set inav_w_z_sonar_v = 6.100 set inav_w_z_baro_p = 0.350 set inav_w_z_gps_p = 0.200 set inav_w_z_gps_v = 0.500 set inav_w_xy_gps_p = 1.000 set inav_w_xy_gps_v = 2.000 set inav_w_z_res_v = 0.500 set inav_w_xy_res_v = 0.500 set inav_w_acc_bias = 0.010 set inav_max_eph_epv = 1000.000 set inav_baro_epv = 100.000 set nav_disarm_on_landing = OFF set nav_use_midthr_for_althold = OFF set nav_extra_arming_safety = ON set nav_user_control_mode = ATTI set nav_position_timeout = 5 set nav_wp_radius = 100 set nav_wp_safe_distance = 10000 set nav_auto_speed = 300 set nav_auto_climb_rate = 500 set nav_manual_speed = 500 set nav_manual_climb_rate = 200 set nav_landing_speed = 200 set nav_land_slowdown_minalt = 500 set nav_land_slowdown_maxalt = 2000 set nav_emerg_landing_speed = 500 set nav_min_rth_distance = 500 set nav_rth_climb_first = ON set nav_rth_climb_ignore_emerg = OFF set nav_rth_tail_first = OFF set nav_rth_allow_landing = ON set nav_rth_alt_mode = AT_LEAST set nav_rth_abort_threshold = 50000 set nav_rth_altitude = 5000 set nav_mc_bank_angle = 30 set nav_mc_hover_thr = 1500 set nav_mc_auto_disarm_delay = 2000 set nav_fw_cruise_thr = 1400 set nav_fw_min_thr = 1200 set nav_fw_max_thr = 1700 set nav_fw_bank_angle = 20 set nav_fw_climb_angle = 20 set nav_fw_dive_angle = 15 set nav_fw_pitch2thr = 10 set nav_fw_loiter_radius = 6000 set nav_fw_launch_velocity = 300 set nav_fw_launch_accel = 1863 set nav_fw_launch_detect_time = 40 set nav_fw_launch_thr = 1700 set nav_fw_launch_idle_thr = 1000 set nav_fw_launch_motor_delay = 500 set nav_fw_launch_spinup_time = 100 set nav_fw_launch_timeout = 5000 set nav_fw_launch_climb_angle = 10 set telemetry_switch = OFF set telemetry_inversion = OFF set frsky_default_latitude = 0.000 set frsky_default_longitude = 0.000 set frsky_coordinates_format = 0 set frsky_unit = IMPERIAL set frsky_vfas_precision = 0 set frsky_vfas_cell_voltage = OFF set hott_alarm_sound_interval = 5 set smartport_uart_unidir = OFF set ibus_telemetry_type = 0 set ltm_update_rate = NORMAL set ledstrip_visual_beeper = OFF set i2c_overclock = OFF set debug_mode = NONE set acc_task_frequency = 500 set attitude_task_frequency = 250 set async_mode = NONE set throttle_tilt_comp_str = 0 set input_filtering_mode = OFF set mode_range_logic_operator = OR

profile

profile 1

set mc_p_pitch = 40 set mc_i_pitch = 30 set mc_d_pitch = 23 set mc_p_roll = 40 set mc_i_roll = 30 set mc_d_roll = 23 set mc_p_yaw = 85 set mc_i_yaw = 45 set mc_d_yaw = 0 set mc_p_level = 20 set mc_i_level = 15 set mc_d_level = 75 set fw_p_pitch = 4 set fw_i_pitch = 27 set fw_ff_pitch = 55 set fw_p_roll = 5 set fw_i_roll = 26 set fw_ff_roll = 30 set fw_p_yaw = 50 set fw_i_yaw = 45 set fw_ff_yaw = 0 set fw_p_level = 10 set fw_i_level = 15 set fw_d_level = 75 set max_angle_inclination_rll = 400 set max_angle_inclination_pit = 400 set dterm_lpf_hz = 40 set yaw_lpf_hz = 30 set dterm_setpoint_weight = 0.000 set fw_iterm_throw_limit = 165 set fw_reference_airspeed = 0 set dterm_notch_hz = 0 set dterm_notch_cutoff = 1 set pidsum_limit = 500 set yaw_p_limit = 300 set iterm_ignore_threshold = 200 set yaw_iterm_ignore_threshold = 50 set rate_accel_limit_roll_pitch = 0 set rate_accel_limit_yaw = 10000 set heading_hold_rate_limit = 90 set nav_mc_pos_z_p = 50 set nav_mc_pos_z_i = 0 set nav_mc_pos_z_d = 0 set nav_mc_vel_z_p = 100 set nav_mc_vel_z_i = 50 set nav_mc_vel_z_d = 10 set nav_mc_pos_xy_p = 65 set nav_mc_pos_xy_i = 120 set nav_mc_pos_xy_d = 10 set nav_mc_vel_xy_p = 180 set nav_mc_vel_xy_i = 15 set nav_mc_vel_xy_d = 100 set nav_fw_pos_z_p = 50 set nav_fw_pos_z_i = 0 set nav_fw_pos_z_d = 0 set nav_fw_pos_xy_p = 75 set nav_fw_pos_xy_i = 5 set nav_fw_pos_xy_d = 8 set rc_expo = 70 set rc_yaw_expo = 20 set thr_mid = 50 set thr_expo = 0 set roll_rate = 19 set pitch_rate = 19 set yaw_rate = 20 set tpa_rate = 25 set tpa_breakpoint = 1300 `

[digitalentity]

Do you have logs?

[digitalentity]

Also, can you describe a bit more what happens after signal is lost and what happens after signal is restored.

[brat002]

No any logs, sorry. How to reproduce the problem:

1. Fly straight.
2. Swith off RC.
3. A Plane correctly switch to RTH.
4. After RC switched on a plane switch to previous flight mode, but flight controller dont give control to pilot. Just dive and fall
5. After 5 seconds pilot can regain control the plane and recover it from fall.

[digitalentity]

In your case after you switch RC back on and don't move the sticks plane should continue RTH. Can you confirm that the plane instantly switched out of RTH when you switched on the remote?

Also, what mode were you flying before activating failsafe?

[oleost]

I did several test on the build I have on my airplane, ( cc9e407 )

Failsafe worked as expected.

[brat002]

Can you confirm that the plane instantly switched out of RTH when you switched on the remote?

Plane switched out of RTH when RC was switched on and I move sticks. But instead of fly straight plane started to dive. Control was regained only after 5 seconds. I performed this test 2 times with identical results.

[digitalentity]

I looked through the code and don't see where the 5s delay may originate - control should be released to pilot immediately.

@brat002 Sparky2 should be able to record blackbox logs to onboard memory. If possible can you record a log of the issue - would certainly help figuring out what the issue is.

[oleost]

Stick threshold will lock throttle and yaw control from pilot until he moves roll/pitch

[brat002]

Guys, one correction. Plane starts to dive in RTH mode when RC switched on again. RTH switched back to angle only after delay. Between rc on and switch to angle plane falls around 5 seconds.

[oleost]

@brat002 Please provide blackbox log, I'm unable to reproduce your issue.

[digitalentity]

Yes, it's hard to figure this issue out without a BB log. We shouldn't pay too much attention to this issue though. I'm reworking the receiver/failsafe system. The new code won't make it to 1.7, but I would like to have it in 1.7.1 shortly after 1.7.

[brat002]

I will try to record logs asap, but bad weather doest not allows to do it today. Maybe tomorrow will try again.

[brat002]

I can't explain this but problem was solved itself. Today's evening we tested this plane and RTH worked as should. Please set low severity to this task or close it.

[digitalentity]

I've added it to 1.8 milestone. We'll likely close it since 1.8 will have a huge overhaul of failsafe system

[digitalentity]

I'm closing this one. @brat002 feel free to reopen if problem repeats itself.