get air density / sea level density - decreases as altitude climbs

return geometric altitude difference in meters between current pressure and a given base_pressure in Pascal. */

get the apparent wind direction in body-frame in radians, 0 = head to wind

return bearing in radians from location to loc2, return is 0 to 2*Pi

Get bearing from loc1 to loc2.

get the power "level"

get_control_mode - gets control mode

get an individual ESC's current in Ampere if available, returns true on success

get the current screen

get date and time. Returns true on success and fills in year, month, day, hour, min, sec and ms year is the regular Gregorian year, month is 0~11, da

return the distance in meters in North/East/Down plane as a N/E/D vector to loc2 considering alt frame, if altitude cannot be resolved down distance i

return the distance in meters in North/East/Down plane as a N/E/D vector to loc2

return string error message for error object at top of stack

returns the specified exclusion circle circle center offsets in cm from EKF origin in NE frame, radius is in meters

returns pointer to array of exclusion polygon points and num_points is filled in with the number of points in the polygon points are offsets in cm fro

return string corresponding to frame_class

Frequency response data accessors

accessor for the current waveform frequency

returns pointer to array of inclusion polygon points and num_points is filled in with the number of points in the polygon points are offsets in cm fro

return lateral acceleration in m/s/s given a steering input (in the range -1 to +1) and speed in m/s

return length of found packet

return the number of turns for a LOITER_TURNS command this has special handling for loiter turns from cmd.p1 and type_specific_bits

get the time-allowed-per-loop in microseconds

get_mount_type - returns the type of mount

returns number of samples collected

get named float parameter on node */

get serial port number for the uart, or -1 if not applicable

get_pos_error_xy_cm - get the length of the position error vector in the xy plane

get position relative to home */

get the index of the current primary accelerometer sensor

return quality threshold

get a rally point from EEPROM

simple random generator, see http://en.wikipedia.org/wiki/Random_number_generation */

wait for channel to hit value

get number of frames, ignoring failsafe

get number of frames, honoring failsafe

return a relative ground position from the origin in meters, down */

execute the mission in reverse (i.e. drive backwards to destination)

get desired roll, pitch which should be fed into stabilize controllers

accessors for roll, pitch, yaw and throttle inputs to motors

get_safe_alt_min - returns the minimum safe altitude (i.e. alt_min + margin)

return safety button options. Bits are in enum board_safety_button_option

returns an integer based off content

get packet size in bytes

get the status of the calibrator server as a whole

return current target airspeed

returns true if there is a temperature reading

accessor for uart

* return a velocity correction (in m/s in NED) for a sensor's position given it's position offsets * this correction should be added to the sensor NE

get destination as a location. Altitude frame will be above origin or above terrain returns false if unable to return a destination (for example if or

get_wp_stopping_point - returns vector to stopping point based on 3D position and velocity

Wrap AHRS yaw if in reverse - radians */

get target yaw in centi-degrees

** Read an integer numeral and raises an error if it is larger ** than the maximum size for integers. */

main parse code */

handle messages which don't require vehicle specific data */

general purpose method to consume position estimate data and send to EKF distances in meters, roll, pitch and yaw are in radians quality of -1 means f

returns true if we have had a direct detach RC receiver, does not include overrides

return true if we are tilt aligned

healthy - return true if the sensor is healthy

calibration and alt check not valid for AP_Periph

hold in stabilize with given throttle

return true if in a specific AUTO mission command */

return true if we are in a transition to fwd flight from hover */

see if we are in the descent phase of a VTOL landing */

Shifts the target attitude to maintain the current error in the event of an EKF reset