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    HITL on VOXL 2 : Preflight fail EKF couldn't get status

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    • Tamas Pal 0T
      Tamas Pal 0
      last edited by

      Re: Unable to access px4 with qgc in voxl 2 using usb-jst cable
      That problem with voxl-px4-hitl is solved. Thank you.
      When I am trying to run the voxl-px4-hitl, I am having this issue -

      INFO  [PreFlightCheck] Preflight Fail: Compass Sensor missing
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Preflight fail EKF couldn't get status
INFO  [PreFlightCheck] Preflight fail EKF couldn't get status
INFO  [PreFlightCheck] Failed EKF health preflight check
INFO  [PreFlightCheck] Preflight Fail: Compass Sensor missing
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Preflight fail EKF couldn't get status
INFO  [PreFlightCheck] Preflight fail EKF couldn't get status
INFO  [PreFlightCheck] Failed EKF health preflight check
INFO  [PreFlightCheck] Preflight Fail: Compass Sensor missing
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Preflight fail EKF couldn't get status
INFO  [PreFlightCheck] Preflight fail EKF couldn't get status
INFO  [PreFlightCheck] Failed EKF health preflight check

      Why it is there and how to solve this issue?

      1 Reply Last reply Reply Quote 0
      • Zachary LowellZ
        Zachary Lowell Dev Team
        last edited by

        @Tamas-Pal-0 said in HITL on VOXL 2 : Preflight fail EKF couldn't get status:

        Why it is there and how to solve this issue?

        Hi Tamas - can you please post the entire log from PX4 shell when you run hitl - my biggest inclination is that you have a bad connection or that you are not using the proper flags when you execute px4 in HITL mode.

        1 Reply Last reply Reply Quote 0
        • Zachary LowellZ
          Zachary Lowell Dev Team
          last edited by

          @Tamas-Pal-0 the more I think about this, the more I believe you are running HITL in VIO while the drone is expecting GPS or vice versa, you are running HITL in GPS mode but the drone is in VIO mode.

          1 Reply Last reply Reply Quote 0
          • Tamas Pal 0T
            Tamas Pal 0
            last edited by Tamas Pal 0

            I am getting this after running voxl-px4-hitl

            voxl2:/etc/modalai$ voxl-px4-hitl 
Found DSP signature file
Setting GPS Parameters for HITL
INFO  [px4] mlockall() enabled. PX4's virtual address space is locked into RAM.
INFO  [px4] assuming working directory is rootfs, no symlinks needed.

______  __   __    ___ 
| ___ \ \ \ / /   /   |
| |_/ /  \ V /   / /| |
|  __/   /   \  / /_| |
| |     / /^\ \ \___  |
\_|     \/   \/     |_/

px4 starting.

INFO  [px4] Calling startup script: /bin/sh /etc/modalai/voxl-px4-hitl-gps-parameters.config 0
  CBRK_SUPPLY_CHK: curr: 0 -> new: 894281
ERROR [parameters] Timeout waiting for parameter_client_set_value_response for CBRK_SUPPLY_CHK
  COM_DISARM_PRFLT: curr: 10.0000 -> new: -1.0000
ERROR [parameters] Timeout waiting for parameter_client_set_value_response for COM_DISARM_PRFLT
  COM_RC_IN_MODE: curr: 0 -> new: 1
ERROR [parameters] Timeout waiting for parameter_client_set_value_response for COM_RC_IN_MODE
  NAV_RCL_ACT: curr: 2 -> new: 0
ERROR [parameters] Timeout waiting for parameter_client_set_value_response for NAV_RCL_ACT
  EKF2_RNG_AID: curr: 0 -> new: 1
ERROR [parameters] Timeout waiting for parameter_client_set_value_response for EKF2_RNG_AID
Exiting NOW.
INFO  [px4] mlockall() enabled. PX4's virtual address space is locked into RAM.
INFO  [px4] assuming working directory is rootfs, no symlinks needed.

______  __   __    ___ 
| ___ \ \ \ / /   /   |
| |_/ /  \ V /   / /| |
|  __/   /   \  / /_| |
| |     / /^\ \ \___  |
\_|     \/   \/     |_/

px4 starting.

INFO  [px4] Calling startup script: /bin/sh /etc/modalai/voxl-px4-hitl.config 0
INFO  [muorb] SLPI: Creating qurt thread hpwork

INFO  [muorb] SLPI: Successfully created px4 task PX4_hpwork with tid 83
INFO  [muorb] SLPI: Creating qurt thread lpwork

INFO  [muorb] SLPI: Successfully created px4 task PX4_lpwork with tid 82
INFO  [muorb] SLPI: Creating qurt thread wkr_hrt

INFO  [muorb] SLPI: Successfully created px4 task PX4_wkr_hrt with tid 81
INFO  [muorb] SLPI: Creating qurt thread client_sync_thread

INFO  [muorb] SLPI: Successfully created px4 task PX4_client_sync_thread with tid 80
INFO  [muorb] SLPI: Creating qurt thread wq_manager

INFO  [muorb] SLPI: Successfully created px4 task PX4_wq_manager with tid 79
INFO  [muorb] SLPI: Creating qurt thread qshell

INFO  [muorb] SLPI: Successfully created px4 task PX4_qshell with tid 78
INFO  [logger] logger started (mode=all)
INFO  [logger] Start file log (type: full)
INFO  [logger] [logger] /data/px4/log/sess014/log001.ulg
INFO  [logger] Opened full log file: /data/px4/log/sess014/log001.ulg
INFO  [muorb] SLPI: Advertising remote topic mavlink_log
ERROR [logger] No subscriptions added
INFO  [muorb] SLPI: Advertising remote topic logger_status
INFO  [qshell] Send cmd: 'icm42688p start -s -h'
INFO  [muorb] SLPI: Marking DeviceNode(qshell_req) as advertised in process_remote_topic
INFO  [muorb] SLPI: qshell gotten: icm42688p start -s -h
INFO  [muorb] SLPI: Creating qurt thread wq_SPI1

INFO  [muorb] SLPI: Successfully created px4 task PX4_wq_SPI1 with tid 77
INFO  [muorb] SLPI: *** SPI Device ID 0x26000a 2490378
INFO  [muorb] SLPI: on SPI bus 1
INFO  [muorb] SLPI: icm42688p #0 on SPI bus 1 (devid=0x0)
INFO  [muorb] SLPI: 

INFO  [muorb] SLPI: Ok executing command: icm42688p start -s -h
INFO  [muorb] SLPI: Sending qshell retval with timestamp 624404183, current timestamp 624404183
INFO  [uorb] Advertising remote topic qshell_retval
INFO  [qshell] qshell return value timestamp: 624404183, local time: 624407992
INFO  [muorb] SLPI: Marking DeviceNode(parameter_client_reset_request) as advertised in process_remote_topic
ERROR [muorb] SLPI: Cannot reset all parameters on client side
INFO  [uorb] Marking DeviceNode(parameter_client_reset_response) as advertised in process_remote_topic
INFO  [muorb] SLPI: Advertising remote topic parameter_update
INFO  [muorb] SLPI: Marking DeviceNode(parameter_client_set_value_request) as advertised in process_remote_to
INFO  [uorb] Marking DeviceNode(parameter_server_set_used_request) as advertised in process_remote_topic
INFO  [muorb] SLPI: Marking DeviceNode(parameter_server_set_used_response) as advertised in process_remote_to
INFO  [uorb] Marking DeviceNode(parameter_client_set_value_response) as advertised in process_remote_topic
INFO  [dataman] Unknown restart, data manager file '/data/px4/dataman' size is 11798680 bytes
INFO  [qshell] Send cmd: 'sensors start -h'
INFO  [muorb] SLPI: Marking DeviceNode(qshell_req) as advertised in process_remote_topic
INFO  [muorb] SLPI: qshell gotten: sensors start -h
INFO  [muorb] SLPI: Creating qurt thread wq_nav_and_controllers

INFO  [muorb] SLPI: Successfully created px4 task PX4_wq_nav_and_controllers with tid 76
INFO  [muorb] SLPI: Creating qurt thread wq_rate_ctrl

INFO  [muorb] SLPI: Successfully created px4 task PX4_wq_rate_ctrl with tid 75
INFO  [muorb] SLPI: Ok executing command: sensors start -h
INFO  [muorb] SLPI: Sending qshell retval with timestamp 626707779, current timestamp 626707782
INFO  [uorb] Advertising remote topic sensors_status_imu
INFO  [qshell] qshell return value timestamp: 626707779, local time: 626711169
INFO  [commander] Mission #2 loaded, 13 WPs, curr: 0
INFO  [commander] LED: open /dev/led0 failed (22)
INFO  [muorb] SLPI: Advertising remote topic mission
INFO  [muorb] SLPI: Advertising remote topic led_control
INFO  [muorb] SLPI: Advertising remote topic tune_control
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed EKF health preflight check while waiting for filter to settle
INFO  [muorb] SLPI: Advertising remote topic vehicle_control_mode
INFO  [muorb] SLPI: Advertising remote topic vehicle_status
INFO  [muorb] SLPI: Advertising remote topic actuator_armed
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [muorb] SLPI: Advertising remote topic commander_state
INFO  [muorb] SLPI: Advertising remote topic vehicle_status_flags
INFO  [muorb] SLPI: Advertising remote topic vehicle_command
INFO  [commander] Handling Commander command 176
INFO  [muorb] SLPI: Advertising remote topic vehicle_command_ack
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [muorb] SLPI: Advertising remote topic position_setpoint_triplet
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [muorb] SLPI: Marking DeviceNode(qshell_req) as advertised in process_remote_topic
INFO  [qshell] Send cmd: 'mc_pos_control start'
INFO  [muorb] SLPI: qshell gotten: mc_pos_control start
INFO  [muorb] SLPI: Ok executing command: mc_pos_control start
INFO  [muorb] SLPI: Sending qshell retval with timestamp 627951004, current timestamp 627951006
INFO  [qshell] qshell return value timestamp: 627951004, local time: 627952949
INFO  [qshell] Send cmd: 'mc_att_control start'
INFO  [muorb] SLPI: Marking DeviceNode(qshell_req) as advertised in process_remote_topic
INFO  [muorb] SLPI: qshell gotten: mc_att_control start
INFO  [muorb] SLPI: Ok executing command: mc_att_control start
INFO  [muorb] SLPI: Sending qshell retval with timestamp 628024288, current timestamp 628024290
INFO  [qshell] qshell return value timestamp: 628024288, local time: 628027033
INFO  [qshell] Send cmd: 'mc_rate_control start'
INFO  [muorb] SLPI: Marking DeviceNode(qshell_req) as advertised in process_remote_topic
INFO  [muorb] SLPI: qshell gotten: mc_rate_control start
INFO  [muorb] SLPI: Ok executing command: mc_rate_control start
INFO  [muorb] SLPI: Sending qshell retval with timestamp 628121854, current timestamp 628121856
INFO  [qshell] qshell return value timestamp: 628121854, local time: 628122930
INFO  [qshell] Send cmd: 'mc_hover_thrust_estimator start'
INFO  [muorb] SLPI: Marking DeviceNode(qshell_req) as advertised in process_remote_topic
INFO  [muorb] SLPI: qshell gotten: mc_hover_thrust_estimator start
INFO  [muorb] SLPI: Ok executing command: mc_hover_thrust_estimator start
INFO  [muorb] SLPI: Sending qshell retval with timestamp 628181880, current timestamp 628181882
INFO  [qshell] qshell return value timestamp: 628181880, local time: 628183203
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [qshell] Send cmd: 'land_detector start multicopter'
INFO  [muorb] SLPI: Marking DeviceNode(qshell_req) as advertised in process_remote_topic
INFO  [muorb] SLPI: qshell gotten: land_detector start multicopter
INFO  [muorb] SLPI: Ok executing command: land_detector start multicopter
INFO  [muorb] SLPI: Sending qshell retval with timestamp 628293334, current timestamp 628293336
INFO  [qshell] qshell return value timestamp: 628293334, local time: 628294343
INFO  [uorb] Advertising remote topic vehicle_land_detected
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [qshell] Send cmd: 'pwm_out_sim start -m hil'
INFO  [muorb] SLPI: Marking DeviceNode(qshell_req) as advertised in process_remote_topic
INFO  [muorb] SLPI: qshell gotten: pwm_out_sim start -m hil
INFO  [muorb] SLPI: Creating qurt thread wq_hp_default

INFO  [muorb] SLPI: Successfully created px4 task PX4_wq_hp_default with tid 74
INFO  [uorb] Advertising remote topic test_motor
INFO  [muorb] SLPI: Ok executing command: pwm_out_sim start -m hil
INFO  [muorb] SLPI: Sending qshell retval with timestamp 629365786, current timestamp 629365788
INFO  [qshell] qshell return value timestamp: 629365786, local time: 629367822
INFO  [qshell] Send cmd: 'mixer load /dev/pwm_output0 quad_x.main.mix'
INFO  [muorb] SLPI: Marking DeviceNode(qshell_req) as advertised in process_remote_topic
INFO  [muorb] SLPI: qshell gotten: mixer load /dev/pwm_output0 quad_x.main.mix
INFO  [muorb] SLPI: Ok executing command: mixer load /dev/pwm_output0 quad_x.main.mix
INFO  [muorb] SLPI: Sending qshell retval with timestamp 629434024, current timestamp 629434026
INFO  [qshell] qshell return value timestamp: 629434024, local time: 629436110
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [qshell] Send cmd: 'ekf2 start'
INFO  [muorb] SLPI: Marking DeviceNode(qshell_req) as advertised in process_remote_topic
INFO  [muorb] SLPI: qshell gotten: ekf2 start
INFO  [muorb] SLPI: Creating qurt thread wq_INS0

INFO  [muorb] SLPI: Successfully created px4 task PX4_wq_INS0 with tid 4170
INFO  [muorb] SLPI: Ok executing command: ekf2 start
INFO  [muorb] SLPI: Sending qshell retval with timestamp 630732518, current timestamp 630732521
INFO  [qshell] qshell return value timestamp: 630732518, local time: 630734090
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [qshell] Send cmd: 'modalai_dsp start -p 2 -b 921600'
INFO  [muorb] SLPI: Marking DeviceNode(qshell_req) as advertised in process_remote_topic
INFO  [muorb] SLPI: qshell gotten: modalai_dsp start -p 2 -b 921600
INFO  [muorb] SLPI: Creating qurt thread modalai_dsp__main

INFO  [muorb] SLPI: Successfully created px4 task PX4_modalai_dsp__main with tid 73
INFO  [muorb] SLPI: Ok executing command: modalai_dsp start -p 2 -b 921600
INFO  [muorb] SLPI: Sending qshell retval with timestamp 631789844, current timestamp 631789846
ERROR [muorb] SLPI: Port is open: 0
INFO  [uorb] Advertising remote topic sensor_accel
INFO  [uorb] Advertising remote topic sensor_gyro
INFO  [qshell] qshell return value timestamp: 631789844, local time: 631792366
INFO  [muorb] SLPI: Got 5 from orb_subscribe
INFO  [muorb] SLPI: Got 6 from orb_subscribe
INFO  [muorb] SLPI: Got 7 from orb_subscribe
INFO  [muorb] SLPI: Got 8 from orb_subscribe
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [mavlink] mode: Onboard, data rate: 100000 B/s on udp port 14556 remote port 14557
INFO  [muorb] SLPI: Marking DeviceNode(vehicle_command) as advertised in process_remote_topic
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [px4] Startup script returned successfully
pxh> INFO  [muorb] SLPI: Advertising remote topic telemetry_status
INFO  [mavlink] partner IP: 127.0.0.1
INFO  [muorb] SLPI: Advertising remote topic obstacle_distance
INFO  [muorb] SLPI: Advertising remote topic offboard_control_mode
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [muorb] SLPI: Advertising remote topic timesync_status
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check

pxh> INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check
pxh> coINFO  [PreFlightCheck] Failed barometer preflight check
pxh> commINFO  [PreFlightCheck] Failed barometer preflight check
pxh> commanINFO  [PreFlightCheck] Failed barometer preflight check
pxh> commandeINFO  [PreFlightCheck] Failed barometer preflight check
pxh> commanderINFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check
pxh> commander INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check
pxh> commander tINFO  [PreFlightCheck] Failed barometer preflight check
pxh> commander takINFO  [PreFlightCheck] Failed barometer preflight check
pxh> commander takeoINFO  [PreFlightCheck] Failed barometer preflight check
pxh> commander takeoffINFO  [PreFlightCheck] Failed barometer preflight check
INFO  [PreFlightCheck] Failed barometer preflight check

INFO  [PreFlightCheck] Failed barometer preflight check
INFO  [muorb] SLPI: Marking DeviceNode(vehicle_command) as advertised in process_remote_topic
pxh> INFO  [muorb] SLPI: Marking DeviceNode(vehicle_command) as advertised in process_remote_topic
INFO  [commander] Handling Commander command 22
ERROR [commander] Takeoff denied! Please disarm and retry
INFO  [commander] Handling Commander command 400
INFO  [commander] Arming reason 3
INFO  [commander] Armed by internal command
INFO  [commander] Armed state changed. Was 0, now 1
INFO  [muorb] SLPI: Marking DeviceNode(mavlink_log) as advertised in process_remote_topic
INFO  [commander] Takeoff detected

            This is the gazebo terminal output

            tamas@tamas:~/Develop/PX4-Autopilot$ gazebo Tools/sitl_gazebo/worlds/hitl_iris.world
Opened serial device /dev/ttyUSB0
../src/intel/isl/isl.c:2220: FINISHME: ../src/intel/isl/isl.c:isl_surf_supports_ccs: CCS for 3D textures is disabled, but a workaround is available.

            It says takeoff detected in the voxl 2 terminal but no response in gazebo simulaor. How to fix this ?

            1 Reply Last reply Reply Quote 0
            • Zachary LowellZ
              Zachary Lowell Dev Team
              last edited by

              Based off the terminal output, looks like you have a good connection between your computer and the voxl2 - Did you ever run the following before running gazebo:

              echo 1 | sudo tee /sys/bus/usb-serial/devices/ttyUSB0/latency_timer

              Tamas Pal 0T 1 Reply Last reply Reply Quote 0
              • Tamas Pal 0T
                Tamas Pal 0 @Zachary Lowell
                last edited by

                @Zachary-Lowell Yes. I run this before running gazebo :

                echo 1 | sudo tee /sys/bus/usb-serial/devices/ttyUSB0/latency_timer

                The issue is that although the terminal in voxl 2 is showing takeoff detected there is no chnage in gazebo. How to fix this ?

                1 Reply Last reply Reply Quote 0
                • Tamas Pal 0T
                  Tamas Pal 0
                  last edited by

                  After ruuning all the command like my previous post I opened QGC. It shows flying status but no response in gazebo simulator. I have tried HITL with Jmavsim; here also the simulator not responding. And everytime when I open QGC after running voxl-px4-hitl it some popup comes like like some parameters are missing (SYS_AUTOSTART, SYS_AUTOCONFIG, BAT_V_LOAD_DROP, BAT_SOURCE, SDLOG_MODE). How to get the simulator running ?

                  1 Reply Last reply Reply Quote 0
                  • Zachary LowellZ
                    Zachary Lowell Dev Team
                    last edited by Zachary Lowell

                    Those parameters are expected to be missing. Inside the hitl_iris.world file what sdf model are you leveraging? Also I always use PX4 v1.12.3 when running simulation with gazebo and almost never got this issue you are saying above and usually the echo 1 sudo tee line tends to fix that as it relays data as fast as possible. Are you trying to run the voxl2 in VIO or GPS mode for hitl?

                    Also is there a specific baudrate max on your FTDI cable?

                    Tamas Pal 0T 1 Reply Last reply Reply Quote 0
                    • Tamas Pal 0T
                      Tamas Pal 0 @Zachary Lowell
                      last edited by Tamas Pal 0

                      @Zachary-Lowell
                      I am using PX4 v1.13.0 because in PX4 v1.12.3 the Tools/setup_gazebo.bash file is missing.
                      This is the hitl_iris.world file

                      <?xml version="1.0" ?>
<sdf version="1.5">
  <world name="hitl_iris_world">
    <scene>
      <ambient>0.7 0.7 0.7 1</ambient>
      <background>0.7 0.7 0.7 1</background>
      <shadows>false</shadows>
    </scene>

    <gui fullscreen='0'>
      <camera name='user_camera'>
        <pose>-12.0 -3.0 10.0 0 0.5 0.2</pose>
        <view_controller>orbit</view_controller>
        <projection_type>perspective</projection_type>
      </camera>
    </gui>

    <include>
      <uri>model://sun</uri>
    </include>

    <physics name='default_physics' default='0' type='ode'>
      <gravity>0 0 -9.8066</gravity>
      <ode>
        <solver>
          <type>quick</type>
          <iters>10</iters>
          <sor>1.3</sor>
          <use_dynamic_moi_rescaling>0</use_dynamic_moi_rescaling>
        </solver>
        <constraints>
          <cfm>0</cfm>
          <erp>0.2</erp>
          <contact_max_correcting_vel>100</contact_max_correcting_vel>
          <contact_surface_layer>0.001</contact_surface_layer>
        </constraints>
      </ode>
      <max_step_size>0.004</max_step_size>
      <real_time_factor>1</real_time_factor>
      <real_time_update_rate>250</real_time_update_rate>
      <magnetic_field>6.0e-6 2.3e-5 -4.2e-5</magnetic_field>
    </physics>
    <include>
      <uri>model://ground_plane</uri>
    </include>
    <include>
      <uri>model://asphalt_plane</uri>
    </include>
    <include>
      <uri>model://iris_hitl</uri>
      <pose>1.01 0.98 0.83 0 0 1.14</pose>
    </include>
  </world>
</sdf>

                      I have tried to run this with both gps and vio mode, both having similar issues. The ftdi cable I am using is TTL-232R-3V3. is it fine ?

                      1 Reply Last reply Reply Quote 0
                      • Tamas Pal 0T
                        Tamas Pal 0
                        last edited by

                        The problem is solved. The problem was in FTDI cable. I changed the cable and it worked

                        1 Reply Last reply Reply Quote 0
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