- f -

• f : log_TYP1 , Menu::arg
• f2i_mixer_magic : px4io_mixdata
• f_sda : Soft_I2C
• f_yield : task_t
• FA1R : PX4::bxcan::CanType , VRBRAIN::bxcan::CanType
• factory_test : AP_Radio
• failsafe : AP_BattMonitor::BattMonitor_State
• failsafe_battery : AP_Notify::notify_flags_and_values_type , Buzzer::buzzer_flag_type , ToneAlarm_ChibiOS::tonealarm_type , ToneAlarm_Linux::tonealarm_type , ToneAlarm_PX4::tonealarm_type
• failsafe_mode_change : AP_Notify::notify_events_type
• failsafe_pulse : AP_UAVCAN
• failsafe_radio : AP_Notify::notify_flags_and_values_type , ToneAlarm_PX4::tonealarm_type
• fas_call : AP_Frsky_Telem
• fast_channel_mask : ChibiOS::RCOutput
• fast_waypoint : AC_WPNav::wpnav_flags
• fatbase : FATFS
• fattrib : FILINFO
• faults : log_EKF4 , log_NKF4
• faultStatus : NavEKF2_core , NavEKF3_core
• fcc_chan : AP_Radio_cc2500
• fcc_test : AP_Radio
• FCR : dma_stream_t
• fd : Linux::I2CBus , Linux::RCInput_115200 , Linux::RCInput_SBUS , Linux::SPIBus , PX4::PX4Util , VRBRAIN::VRBRAINUtil
• fd_analog_sources : AnalogSource_IIO
• fd_my_end : SITL::Vicon
• fd_their_end : SITL::Vicon
• fdate : FILINFO
• fdm : SITL::Gimbal
• fdm_port : SITL::JSBSim , SITL::last_letter
• FEET_TO_METERS : SITL::Aircraft
• fence : AP_Proximity_SITL
• fence_alt_max : AP_Proximity_SITL
• fence_count : AP_Proximity_SITL
• fence_loader : AP_Proximity_SITL
• fetch_attempts : SoloGimbal_Parameters
• FF : AP_AutoTune::ATGains , DataFlash_Class::PID_Info , log_PID
• FFA1R : PX4::bxcan::CanType , VRBRAIN::bxcan::CanType
• fg_socket : HALSITL::SITL_State
• field : Compass , Compass::mag_state , CompassLearn::sample
• field_decay_rate : SITL::Gripper_EPM
• field_degauss_rate : SITL::Gripper_EPM
• field_strength : SITL::Gripper_EPM
• field_strength_slew_rate : SITL::Gripper_EPM
• field_sum : Compass_PerMotor
• fifoIndexDelayed : NavEKF2_core , NavEKF3_core
• fifoIndexNow : NavEKF2_core , NavEKF3_core
• file_bufsize : DataFlash_Class
• file_disarm_rot : DataFlash_Class
• filename : AP_ROMFS::embedded_file
• FileNumber : DataFlash_Revo::PageHeader
• FilePage : DataFlash_Revo::PageHeader
• files : AP_ROMFS
• filter : NotchFilterVector3fParam
• filtered_loop_time : AP::PerfInfo
• filtered_pressure : AP_Airspeed::airspeed_state
• filtered_reading : Variometer
• FilterRegister : PX4::bxcan::CanType , VRBRAIN::bxcan::CanType
• filterStatus : NavEKF2_core , NavEKF3_core
• FiltInit : SoloGimbalEKF
• final_range : AP_RangeFinder_VL53L0X::SequenceStepEnables
• final_range_mclks : AP_RangeFinder_VL53L0X::SequenceStepTimeouts
• final_range_us : AP_RangeFinder_VL53L0X::SequenceStepTimeouts
• final_range_vcsel_period_pclks : AP_RangeFinder_VL53L0X::SequenceStepTimeouts
• finalInflightMagInit : NavEKF2_core , NavEKF3_core
• finalInflightYawInit : NavEKF2_core , NavEKF3_core
• finish : AP_SmartRTL::simplify_start_finish_t
• firmware_day : AP_Radio_cc2500
• firmware_month : AP_Radio_cc2500
• firmware_update : AP_Notify::notify_flags_and_values_type
• firmware_year : AP_Radio_cc2500
• firstInitTime_ms : NavEKF3_core
• FIX : log_EKF5 , log_NKF5
• fix_invalid : AP_GPS_SIRF::sirf_geonav
• fix_mode : AP_GPS_SBP2::sbp_dops_t::flags , AP_GPS_SBP2::sbp_gps_time_t::flags , AP_GPS_SBP2::sbp_pos_llh_t::flags , AP_GPS_SBP2::sbp_vel_ned_t::flags
• fix_status : AP_GPS_ERB::erb_stat , AP_GPS_UBLOX::ubx_nav_solution , AP_GPS_UBLOX::ubx_nav_status
• fix_type : AP_GPS_ERB::erb_stat , AP_GPS_MTK19::diyd_mtk_msg , AP_GPS_MTK::diyd_mtk_msg , AP_GPS_SIRF::sirf_geonav , AP_GPS_UBLOX::ubx_nav_pvt , AP_GPS_UBLOX::ubx_nav_solution , AP_GPS_UBLOX::ubx_nav_status
• fixed : log_Radio
• fixedAlt : AP_GPS_UBLOX::ubx_cfg_nav_settings
• fixedAltVar : AP_GPS_UBLOX::ubx_cfg_nav_settings
• fixMode : AP_GPS_UBLOX::ubx_cfg_nav_settings
• FIY : log_EKF5 , log_NKF5
• flag : FIL , GetOptLong::option
• flag_10s : F4Light::Scheduler
• flags : AP_GPS_SBP2::sbp_dops_t , AP_GPS_SBP2::sbp_ext_event_t , AP_GPS_SBP2::sbp_gps_time_t , AP_GPS_SBP2::sbp_pos_llh_t , AP_GPS_SBP2::sbp_vel_ned_t , AP_GPS_SBP::sbp_gps_time_t , AP_GPS_SBP::sbp_pos_llh_t , AP_GPS_SBP::sbp_vel_ned_t , AP_GPS_UBLOX::ubx_cfg_gnss::configBlock , AP_GPS_UBLOX::ubx_mon_hw_60 , AP_GPS_UBLOX::ubx_mon_hw_68 , AP_GPS_UBLOX::ubx_nav_pvt , AP_Landing , AP_Mount_SToRM32_serial::cmd_set_angles_struct , AP_Notify , AP_Param::GroupInfo , AP_Param::Info , Linux::CAN::RxItem , Linux::CAN::TxItem , Location , log_POWR , log_SbpLLH , nav_filter_status , nav_gps_status , PX4::CanRxItem , RallyLocation , REVO_IO , SRV_Channels , telem_status , ToneAlarm_ChibiOS , ToneAlarm_Linux , ToneAlarm_PX4 , VRBRAIN::CanRxItem
• flags2 : AP_GPS_UBLOX::ubx_nav_pvt
• flags_ : PX4::CriticalSectionLocker , VRBRAIN::CriticalSectionLocker
• flap_percent : AP_Landing
• flare_alt : AP_Landing
• flare_sec : AP_Landing
• flash : FlashTest
• flash_died : DataFlash_Revo
• flash_erase : AP_FlashStorage
• flash_erase_ok : AP_FlashStorage
• flash_read : AP_FlashStorage
• flash_sector_size : AP_FlashStorage , FlashTest
• flash_write : AP_FlashStorage
• flat_battery : AP_Proximity_LightWareSF40C
• flight_mode : AP_Notify::notify_flags_and_values_type , telem_status
• float_exception : SITL::SITL
• flow_delay : SITL::SITL
• flow_enable : SITL::SITL
• flow_pixel_scaling : AP_OpticalFlow_Pixart
• flow_rate : SITL::SITL
• flowDataToFuse : NavEKF2_core , NavEKF3_core
• flowDataValid : NavEKF2_core , NavEKF3_core
• flowFusionActive : NavEKF3_core
• flowGyroBias : NavEKF2_core , NavEKF3_core
• flowIntervalMax_ms : NavEKF2 , NavEKF3
• flowMeaTime_ms : NavEKF2_core , NavEKF3_core
• flowRadXY : NavEKF2_core::of_elements , NavEKF3_core::of_elements
• flowRadXYcomp : NavEKF2_core::of_elements , NavEKF3_core::of_elements
• flowRate : OpticalFlow::OpticalFlow_state
• flowTestRatio : NavEKF2_core , NavEKF3_core
• flowTimeDeltaAvg_ms : NavEKF2 , NavEKF3
• flowValidMeaTime_ms : NavEKF2_core , NavEKF3_core
• flttime : AP_Stats
• flush_interval_ms : AP_Stats
• fly_forward : AP_AHRS::ahrs_flags
• flybar_passthrough : AC_AttitudeControl_Heli::AttControlHeliFlags
• FM1R : PX4::bxcan::CanType , VRBRAIN::bxcan::CanType
• FMR : PX4::bxcan::CanType , VRBRAIN::bxcan::CanType
• fmt : DataFlash_Class::log_write_fmt
• fn : _USB_OTG_DRXSTS_TypeDef , DIR
• fname : FILINFO
• focus_lock : AP_Mission::Digicam_Control
• follow_deadband : AP_Mount_Alexmos::alexmos_params
• follow_expo_rate : AP_Mount_Alexmos::alexmos_params
• follow_mode : AP_Mount_Alexmos::alexmos_params
• follow_offset_pitch : AP_Mount_Alexmos::alexmos_params
• follow_offset_roll : AP_Mount_Alexmos::alexmos_params
• follow_offset_yaw : AP_Mount_Alexmos::alexmos_params
• follow_roll_mix_range : AP_Mount_Alexmos::alexmos_params
• follow_roll_mix_start : AP_Mount_Alexmos::alexmos_params
• follow_speed_pitch : AP_Mount_Alexmos::alexmos_params
• follow_speed_roll : AP_Mount_Alexmos::alexmos_params
• follow_speed_yaw : AP_Mount_Alexmos::alexmos_params
• force_dev : _USB_OTG_GUSBCFG_TypeDef
• force_external : AP_Compass_AK09916 , AP_Compass_LIS3MDL , AP_Compass_MMC3416
• force_host : _USB_OTG_GUSBCFG_TypeDef
• forced_channel : AP_Radio_cypress
• format : LINE_CODING , log_Format , LogStructure
• format_type : log_Format_Units
• forward_speed : AP_Landing_Deepstall
• fp : putbuff
• fptr : FIL
• FR1 : PX4::bxcan::FilterRegisterType , VRBRAIN::bxcan::FilterRegisterType
• FR2 : PX4::bxcan::FilterRegisterType , VRBRAIN::bxcan::FilterRegisterType
• fragment_count : AP_GPS::rtcm_buffer
• fragments_received : AP_GPS::rtcm_buffer
• frame : F4Light::DSM_parser::DSM , F4Light::PPM_parser::DSM , F4Light::PPM_parser::SBUS , F4Light::SBUS_parser::SBUS , Linux::CAN::RxItem , Linux::CAN::TxItem , Linux::RCInput , log_Cmd , PX4::CanRxItem , PX4::PX4CAN::TxItem , SITL::Aircraft , SITL::JSBSim , SITL::MultiCopter , SITL::QuadPlane , SITL::Submarine , VRBRAIN::CanRxItem , VRBRAIN::VRBRAINCAN::TxItem
• frame_angle_from_motors : AP_Mount_Alexmos::alexmos_params
• frame_count : SITL::XPlane
• frame_count_since_last_readout : AP_OpticalFlow_PX4Flow::i2c_integral_frame
• frame_counter : SITL::Aircraft , SITL::FlightAxis
• frame_height : SITL::Aircraft
• frame_proprietary : SITL::Submarine
• frame_time_us : SITL::Aircraft
• frame_type : SITL::Helicopter , SITL::SingleCopter
• frameIsNED : NavEKF2_core::ext_nav_elements
• framesSincePredict : NavEKF2_core , NavEKF3_core
• free_clst : FATFS
• freeze_ff_z : AC_PosControl::poscontrol_flags
• freq : adc_capture , TimerState
• freq_flag : ChibiOS::SPIDevice
• freq_flag_high : ChibiOS::SPIDevice
• freq_flag_low : ChibiOS::SPIDevice
• freq_scale : TimerState
• freqId : AP_GPS_UBLOX::ubx_rxm_rawx::ubx_rxm_rawx_sv , log_GPS_RAWS
• frequency : AP_HAL::Device , ChibiOS::SPIDevice , PX4::SPIDevice , VRBRAIN::SPIDevice
• frequency_hz : ChibiOS::RCOutput::pwm_group
• frint : _USB_OTG_HFRMINTRVL_TypeDef
• frmovrun : _USB_OTG_HCINTMSK_TypeDef , _USB_OTG_HCINTn_TypeDef
• frnum : _USB_OTG_HFNUM_TypeDef
• frontend : AP_Airspeed_Backend , AP_Proximity_Backend , AP_RCProtocol_Backend , NavEKF2_core , NavEKF3_core , OpticalFlow_backend
• frq : AP_RangeFinder_Wasp
• frrem : _USB_OTG_HFNUM_TypeDef
• frsky_telemetry_p : GCS , GCS_MAVLINK
• fs : FFOBJID
• FS1R : PX4::bxcan::CanType , VRBRAIN::bxcan::CanType
• fs_flag : F4Light::RCInput
• fs_type : FATFS
• fScaleFactorPnoise : NavEKF2 , NavEKF3
• fsi_flag : FATFS
• fsize : FATFS , FILINFO
• fslspclksel : _USB_OTG_HCFG_TypeDef
• fslssupp : _USB_OTG_HCFG_TypeDef
• fsync_set : accel_sample
• ftime : FILINFO
• fuel_flow : SITL::FGNetFDM
• fuel_px : SITL::FGNetFDM
• fuel_quantity : SITL::FGNetFDM
• full_charge_capacity_wh : AP_UAVCAN::BatteryInfo_Info
• function : AP_Scheduler::Task , RangeFinder::RangeFinder_State , SRV_Channel
• function_input_values : AP_Mount_SToRM32_serial::SToRM32_reply_data_struct
• function_mask : SRV_Channels
• functions : SRV_Channels
• furthest_vehicle_distance : AP_ADSB
• furthest_vehicle_index : AP_ADSB
• fuseHgtData : NavEKF2_core , NavEKF3_core
• fuseOptFlowData : NavEKF2_core , NavEKF3_core
• fusePosData : NavEKF2_core , NavEKF3_core
• fuseVelData : NavEKF2_core , NavEKF3_core
• fusionHorizonOffset : NavEKF2_core , NavEKF3_core
• fusionTimeStep_ms : NavEKF2 , NavEKF3
• fw : telem_packet_cc2500 , telem_packet_cypress
• fw_hash_str : AP_FWVersion
• fw_string : AP_FWVersion
• fw_type : AP_FWVersion , AP_Radio_cc2500 , AP_Radio_cypress
• fwupload : AP_Radio_cc2500 , AP_Radio_cypress