<!DOCTYPE airframe SYSTEM "../airframe.dtd">

<!--
     Example airframe
     Umarim Lite
-->

<airframe name="Weasel">

  <firmware name="fixedwing">
    <define name="USE_I2C0"/>
    <define name="USE_I2C1"/>
    <define name="AGR_CLIMB" />

    <target name="sim" board="pc"/>
    <target name="ap" board="umarim_lite_2.0"/>

    <subsystem name="radio_control" type="ppm"/>

    <!-- Communication -->
    <subsystem name="telemetry" type="transparent"/>

    <!-- Actuators are automatically chosen according to board-->
    <subsystem name="imu"     type="umarim"/>
    <subsystem name="ahrs"    type="float_dcm"/>
    <subsystem name="control"/>
    <subsystem name="navigation"/>
    <!-- Sensors -->
    <subsystem name="gps" type="ublox"/>
    <subsystem name="ins" type="alt_float"/>
  </firmware>

<!-- commands section -->
  <servos>
    <servo name="MOTOR" no="7" min="1040" neutral="1040" max="2000"/>
    <servo name="AILEVON_LEFT" no="6" min="1900" neutral="1543" max="1100"/>
    <servo name="AILEVON_RIGHT" no="3" min="1100" neutral="1561" max="1900"/>
  </servos>

  <commands>
    <axis name="THROTTLE" failsafe_value="0"/>
    <axis name="ROLL" failsafe_value="0"/>
    <axis name="PITCH" failsafe_value="0"/>
  </commands>

  <rc_commands>
    <set command="THROTTLE" value="@THROTTLE"/>
    <set command="ROLL" value="@ROLL"/>
    <set command="PITCH" value="@PITCH"/>
  </rc_commands>

  <section name="MIXER">
    <define name="AILEVON_AILERON_RATE" value="0.75"/>
    <define name="AILEVON_ELEVATOR_RATE" value="0.75"/>
  </section>

  <command_laws>
    <let var="aileron" value="@ROLL  * AILEVON_AILERON_RATE"/>
    <let var="elevator" value="@PITCH * AILEVON_ELEVATOR_RATE"/>
    <set servo="MOTOR" value="@THROTTLE"/>
    <set servo="AILEVON_LEFT" value="$elevator + $aileron"/>
    <set servo="AILEVON_RIGHT" value="$elevator - $aileron"/>
  </command_laws>

  <section name="AUTO1" prefix="AUTO1_">
    <define name="MAX_ROLL" value="0.85"/>
    <define name="MAX_PITCH" value="0.6"/>
  </section>

  <section name="IMU" prefix="IMU_">
    <!-- Calibration Neutral -->
    <define name="GYRO_P_NEUTRAL" value="-15"/>
    <define name="GYRO_Q_NEUTRAL" value="94"/>
    <define name="GYRO_R_NEUTRAL" value="-7"/>

    <!-- SENS ITG3200  1/14.375 (deg/s)/LSB, rate frac 12bit => 1/14.375 * pi / 180 * 2^12 -->
    <define name="GYRO_P_SENS" value="4.97312" integer="16"/>
    <define name="GYRO_Q_SENS" value="4.97312" integer="16"/>
    <define name="GYRO_R_SENS" value="4.97312" integer="16"/>

    <define name="ACCEL_X_NEUTRAL" value="0"/>
    <define name="ACCEL_Y_NEUTRAL" value="0"/>
    <define name="ACCEL_Z_NEUTRAL" value="0"/>

    <!-- SENS ADXL345 16G 31.2 mg/LSB, accel frac 10bit => 31.2 * 2^10 / 1000 -->
    <define name="ACCEL_X_SENS" value="31.9488" integer="10"/>
    <define name="ACCEL_Y_SENS" value="31.9488" integer="10"/>
    <define name="ACCEL_Z_SENS" value="31.9488" integer="10"/>

    <!-- Just to compile -->
    <define name="MAG_X_NEUTRAL" value="0"/>
    <define name="MAG_Y_NEUTRAL" value="0"/>
    <define name="MAG_Z_NEUTRAL" value="0"/>

    <define name="BODY_TO_IMU_PHI" value="0"/>
    <define name="BODY_TO_IMU_THETA" value="0"/>
    <define name="BODY_TO_IMU_PSI" value="0"/>
  </section>

  <section name="INS" prefix="INS_">
    <define name="ROLL_NEUTRAL_DEFAULT" value="0.048" unit="rad"/>
    <define name="PITCH_NEUTRAL_DEFAULT" value="0." unit="rad"/>
  </section>

  <section name="BAT">
    <define name="MILLIAMP_AT_FULL_THROTTLE" value="10000."/>
    <define name="CATASTROPHIC_BAT_LEVEL" value="9.3" unit="V"/>
  </section>

  <section name="MISC">
    <define name="NOMINAL_AIRSPEED" value="15." unit="m/s"/>
    <define name="CARROT" value="5." unit="s"/>
    <define name="KILL_MODE_DISTANCE" value="(1.5*MAX_DIST_FROM_HOME)"/>
    <define name="DEFAULT_CIRCLE_RADIUS" value="80."/>
  </section>

  <section name="VERTICAL CONTROL" prefix="V_CTL_">
    <define name="POWER_CTL_BAT_NOMINAL" value="11.1" unit="volt"/>
    <!-- outer loop proportional gain -->
    <define name="ALTITUDE_PGAIN" value="0.03"/>
    <!-- outer loop saturation -->
    <define name="ALTITUDE_MAX_CLIMB" value="2."/>

    <!-- auto throttle inner loop -->
    <define name="AUTO_THROTTLE_NOMINAL_CRUISE_THROTTLE" value="0.32"/>
    <define name="AUTO_THROTTLE_MIN_CRUISE_THROTTLE" value="0.25"/>
    <define name="AUTO_THROTTLE_MAX_CRUISE_THROTTLE" value="0.65"/>
    <define name="AUTO_THROTTLE_LOITER_TRIM" value="1500"/>
    <define name="AUTO_THROTTLE_DASH_TRIM" value="-4000"/>
    <define name="AUTO_THROTTLE_CLIMB_THROTTLE_INCREMENT" value="0.15" unit="%/(m/s)"/>
    <define name="AUTO_THROTTLE_PGAIN" value="0.01"/>
    <define name="AUTO_THROTTLE_IGAIN" value="0.1"/>
    <define name="AUTO_THROTTLE_PITCH_OF_VZ_PGAIN" value="0.05"/>

    <define name="THROTTLE_SLEW_LIMITER" value="2" unit="s"/>
  </section>

  <section name="HORIZONTAL CONTROL" prefix="H_CTL_">
    <define name="COURSE_PGAIN" value="1.0"/>
    <define name="COURSE_DGAIN" value="0.3"/>

    <define name="ROLL_MAX_SETPOINT" value="0.6" unit="rad"/>
    <define name="PITCH_MAX_SETPOINT" value="0.5" unit="rad"/>
    <define name="PITCH_MIN_SETPOINT" value="-0.5" unit="rad"/>

    <define name="PITCH_PGAIN" value="12000."/>
    <define name="PITCH_DGAIN" value="1.5"/>

    <define name="ELEVATOR_OF_ROLL" value="1250"/>

    <define name="ROLL_ATTITUDE_GAIN" value="7500"/>
    <define name="ROLL_RATE_GAIN" value="1500"/>
  </section>

  <section name="AGGRESSIVE" prefix="AGR_">
    <define name="BLEND_START" value="20"/><!-- Altitude Error to Initiate Aggressive Climb CANNOT BE ZERO!!-->
    <define name="BLEND_END" value="10"/><!-- Altitude Error to Blend Aggressive to Regular Climb Modes  CANNOT BE ZERO!!-->
    <define name="CLIMB_THROTTLE" value="1.00"/><!-- Gaz for Aggressive Climb -->
    <define name="CLIMB_PITCH" value="0.3"/><!-- Pitch for Aggressive Climb -->
    <define name="DESCENT_THROTTLE" value="0.1"/><!-- Gaz for Aggressive Decent -->
    <define name="DESCENT_PITCH" value="-0.25"/><!-- Pitch for Aggressive Decent -->
    <define name="CLIMB_NAV_RATIO" value="0.8"/><!-- Percent Navigation for Altitude Error Equal to Start Altitude -->
    <define name="DESCENT_NAV_RATIO" value="1.0"/>
  </section>

  <section name="FAILSAFE" prefix="FAILSAFE_">
    <define name="DELAY_WITHOUT_GPS" value="2" unit="s"/>
    <define name="DEFAULT_THROTTLE" value="0.3" unit="%"/>
    <define name="DEFAULT_ROLL" value="0.3" unit="rad"/>
    <define name="DEFAULT_PITCH" value="0.5" unit="rad"/>
    <define name="HOME_RADIUS" value="100" unit="m"/>
  </section>

</airframe>
