Code for autonomous ground vehicle, Data Bus, 3rd place winner in 2012 Sparkfun AVC.

Dependencies:   Watchdog mbed Schedule SimpleFilter LSM303DLM PinDetect DebounceIn Servo

MAVlink/include/common/mavlink_msg_vfr_hud.h

Committer:
shimniok
Date:
2012-06-20
Revision:
0:826c6171fc1b

File content as of revision 0:826c6171fc1b:

// MESSAGE VFR_HUD PACKING

#define MAVLINK_MSG_ID_VFR_HUD 74

typedef struct __mavlink_vfr_hud_t 
{
    float airspeed; ///< Current airspeed in m/s
    float groundspeed; ///< Current ground speed in m/s
    int16_t heading; ///< Current heading in degrees, in compass units (0..360, 0=north)
    uint16_t throttle; ///< Current throttle setting in integer percent, 0 to 100
    float alt; ///< Current altitude (MSL), in meters
    float climb; ///< Current climb rate in meters/second

} mavlink_vfr_hud_t;



/**
 * @brief Pack a vfr_hud message
 * @param system_id ID of this system
 * @param component_id ID of this component (e.g. 200 for IMU)
 * @param msg The MAVLink message to compress the data into
 *
 * @param airspeed Current airspeed in m/s
 * @param groundspeed Current ground speed in m/s
 * @param heading Current heading in degrees, in compass units (0..360, 0=north)
 * @param throttle Current throttle setting in integer percent, 0 to 100
 * @param alt Current altitude (MSL), in meters
 * @param climb Current climb rate in meters/second
 * @return length of the message in bytes (excluding serial stream start sign)
 */
static inline uint16_t mavlink_msg_vfr_hud_pack(uint8_t system_id, uint8_t component_id, mavlink_message_t* msg, float airspeed, float groundspeed, int16_t heading, uint16_t throttle, float alt, float climb)
{
    uint16_t i = 0;
    msg->msgid = MAVLINK_MSG_ID_VFR_HUD;

    i += put_float_by_index(airspeed, i, msg->payload); // Current airspeed in m/s
    i += put_float_by_index(groundspeed, i, msg->payload); // Current ground speed in m/s
    i += put_int16_t_by_index(heading, i, msg->payload); // Current heading in degrees, in compass units (0..360, 0=north)
    i += put_uint16_t_by_index(throttle, i, msg->payload); // Current throttle setting in integer percent, 0 to 100
    i += put_float_by_index(alt, i, msg->payload); // Current altitude (MSL), in meters
    i += put_float_by_index(climb, i, msg->payload); // Current climb rate in meters/second

    return mavlink_finalize_message(msg, system_id, component_id, i);
}

/**
 * @brief Pack a vfr_hud message
 * @param system_id ID of this system
 * @param component_id ID of this component (e.g. 200 for IMU)
 * @param chan The MAVLink channel this message was sent over
 * @param msg The MAVLink message to compress the data into
 * @param airspeed Current airspeed in m/s
 * @param groundspeed Current ground speed in m/s
 * @param heading Current heading in degrees, in compass units (0..360, 0=north)
 * @param throttle Current throttle setting in integer percent, 0 to 100
 * @param alt Current altitude (MSL), in meters
 * @param climb Current climb rate in meters/second
 * @return length of the message in bytes (excluding serial stream start sign)
 */
static inline uint16_t mavlink_msg_vfr_hud_pack_chan(uint8_t system_id, uint8_t component_id, uint8_t chan, mavlink_message_t* msg, float airspeed, float groundspeed, int16_t heading, uint16_t throttle, float alt, float climb)
{
    uint16_t i = 0;
    msg->msgid = MAVLINK_MSG_ID_VFR_HUD;

    i += put_float_by_index(airspeed, i, msg->payload); // Current airspeed in m/s
    i += put_float_by_index(groundspeed, i, msg->payload); // Current ground speed in m/s
    i += put_int16_t_by_index(heading, i, msg->payload); // Current heading in degrees, in compass units (0..360, 0=north)
    i += put_uint16_t_by_index(throttle, i, msg->payload); // Current throttle setting in integer percent, 0 to 100
    i += put_float_by_index(alt, i, msg->payload); // Current altitude (MSL), in meters
    i += put_float_by_index(climb, i, msg->payload); // Current climb rate in meters/second

    return mavlink_finalize_message_chan(msg, system_id, component_id, chan, i);
}

/**
 * @brief Encode a vfr_hud struct into a message
 *
 * @param system_id ID of this system
 * @param component_id ID of this component (e.g. 200 for IMU)
 * @param msg The MAVLink message to compress the data into
 * @param vfr_hud C-struct to read the message contents from
 */
static inline uint16_t mavlink_msg_vfr_hud_encode(uint8_t system_id, uint8_t component_id, mavlink_message_t* msg, const mavlink_vfr_hud_t* vfr_hud)
{
    return mavlink_msg_vfr_hud_pack(system_id, component_id, msg, vfr_hud->airspeed, vfr_hud->groundspeed, vfr_hud->heading, vfr_hud->throttle, vfr_hud->alt, vfr_hud->climb);
}

/**
 * @brief Send a vfr_hud message
 * @param chan MAVLink channel to send the message
 *
 * @param airspeed Current airspeed in m/s
 * @param groundspeed Current ground speed in m/s
 * @param heading Current heading in degrees, in compass units (0..360, 0=north)
 * @param throttle Current throttle setting in integer percent, 0 to 100
 * @param alt Current altitude (MSL), in meters
 * @param climb Current climb rate in meters/second
 */
#ifdef MAVLINK_USE_CONVENIENCE_FUNCTIONS

static inline void mavlink_msg_vfr_hud_send(mavlink_channel_t chan, float airspeed, float groundspeed, int16_t heading, uint16_t throttle, float alt, float climb)
{
    mavlink_message_t msg;
    mavlink_msg_vfr_hud_pack_chan(mavlink_system.sysid, mavlink_system.compid, chan, &msg, airspeed, groundspeed, heading, throttle, alt, climb);
    mavlink_send_uart(chan, &msg);
}

#endif
// MESSAGE VFR_HUD UNPACKING

/**
 * @brief Get field airspeed from vfr_hud message
 *
 * @return Current airspeed in m/s
 */
static inline float mavlink_msg_vfr_hud_get_airspeed(const mavlink_message_t* msg)
{
    generic_32bit r;
    r.b[3] = (msg->payload)[0];
    r.b[2] = (msg->payload)[1];
    r.b[1] = (msg->payload)[2];
    r.b[0] = (msg->payload)[3];
    return (float)r.f;
}

/**
 * @brief Get field groundspeed from vfr_hud message
 *
 * @return Current ground speed in m/s
 */
static inline float mavlink_msg_vfr_hud_get_groundspeed(const mavlink_message_t* msg)
{
    generic_32bit r;
    r.b[3] = (msg->payload+sizeof(float))[0];
    r.b[2] = (msg->payload+sizeof(float))[1];
    r.b[1] = (msg->payload+sizeof(float))[2];
    r.b[0] = (msg->payload+sizeof(float))[3];
    return (float)r.f;
}

/**
 * @brief Get field heading from vfr_hud message
 *
 * @return Current heading in degrees, in compass units (0..360, 0=north)
 */
static inline int16_t mavlink_msg_vfr_hud_get_heading(const mavlink_message_t* msg)
{
    generic_16bit r;
    r.b[1] = (msg->payload+sizeof(float)+sizeof(float))[0];
    r.b[0] = (msg->payload+sizeof(float)+sizeof(float))[1];
    return (int16_t)r.s;
}

/**
 * @brief Get field throttle from vfr_hud message
 *
 * @return Current throttle setting in integer percent, 0 to 100
 */
static inline uint16_t mavlink_msg_vfr_hud_get_throttle(const mavlink_message_t* msg)
{
    generic_16bit r;
    r.b[1] = (msg->payload+sizeof(float)+sizeof(float)+sizeof(int16_t))[0];
    r.b[0] = (msg->payload+sizeof(float)+sizeof(float)+sizeof(int16_t))[1];
    return (uint16_t)r.s;
}

/**
 * @brief Get field alt from vfr_hud message
 *
 * @return Current altitude (MSL), in meters
 */
static inline float mavlink_msg_vfr_hud_get_alt(const mavlink_message_t* msg)
{
    generic_32bit r;
    r.b[3] = (msg->payload+sizeof(float)+sizeof(float)+sizeof(int16_t)+sizeof(uint16_t))[0];
    r.b[2] = (msg->payload+sizeof(float)+sizeof(float)+sizeof(int16_t)+sizeof(uint16_t))[1];
    r.b[1] = (msg->payload+sizeof(float)+sizeof(float)+sizeof(int16_t)+sizeof(uint16_t))[2];
    r.b[0] = (msg->payload+sizeof(float)+sizeof(float)+sizeof(int16_t)+sizeof(uint16_t))[3];
    return (float)r.f;
}

/**
 * @brief Get field climb from vfr_hud message
 *
 * @return Current climb rate in meters/second
 */
static inline float mavlink_msg_vfr_hud_get_climb(const mavlink_message_t* msg)
{
    generic_32bit r;
    r.b[3] = (msg->payload+sizeof(float)+sizeof(float)+sizeof(int16_t)+sizeof(uint16_t)+sizeof(float))[0];
    r.b[2] = (msg->payload+sizeof(float)+sizeof(float)+sizeof(int16_t)+sizeof(uint16_t)+sizeof(float))[1];
    r.b[1] = (msg->payload+sizeof(float)+sizeof(float)+sizeof(int16_t)+sizeof(uint16_t)+sizeof(float))[2];
    r.b[0] = (msg->payload+sizeof(float)+sizeof(float)+sizeof(int16_t)+sizeof(uint16_t)+sizeof(float))[3];
    return (float)r.f;
}

/**
 * @brief Decode a vfr_hud message into a struct
 *
 * @param msg The message to decode
 * @param vfr_hud C-struct to decode the message contents into
 */
static inline void mavlink_msg_vfr_hud_decode(const mavlink_message_t* msg, mavlink_vfr_hud_t* vfr_hud)
{
    vfr_hud->airspeed = mavlink_msg_vfr_hud_get_airspeed(msg);
    vfr_hud->groundspeed = mavlink_msg_vfr_hud_get_groundspeed(msg);
    vfr_hud->heading = mavlink_msg_vfr_hud_get_heading(msg);
    vfr_hud->throttle = mavlink_msg_vfr_hud_get_throttle(msg);
    vfr_hud->alt = mavlink_msg_vfr_hud_get_alt(msg);
    vfr_hud->climb = mavlink_msg_vfr_hud_get_climb(msg);
}