mavlink_msg_heartbeat.h

// MESSAGE HEARTBEAT PACKING

#define MAVLINK_MSG_ID_HEARTBEAT 0
#define MAVLINK_MSG_ID_HEARTBEAT_LEN 3
#define MAVLINK_MSG_0_LEN 3

typedef struct __mavlink_heartbeat_t 
{
	uint8_t type; ///< Type of the MAV (quadrotor, helicopter, etc., up to 15 types, defined in MAV_TYPE ENUM)
	uint8_t autopilot; ///< Type of the Autopilot: 0: Generic, 1: PIXHAWK, 2: SLUGS, 3: Ardupilot (up to 15 types), defined in MAV_AUTOPILOT_TYPE ENUM
	uint8_t mavlink_version; ///< MAVLink version

} mavlink_heartbeat_t;

/**
 * @brief Pack a heartbeat 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 type Type of the MAV (quadrotor, helicopter, etc., up to 15 types, defined in MAV_TYPE ENUM)
 * @param autopilot Type of the Autopilot: 0: Generic, 1: PIXHAWK, 2: SLUGS, 3: Ardupilot (up to 15 types), defined in MAV_AUTOPILOT_TYPE ENUM
 * @return length of the message in bytes (excluding serial stream start sign)
 */
static inline uint16_t mavlink_msg_heartbeat_pack(uint8_t system_id, uint8_t component_id, mavlink_message_t* msg, uint8_t type, uint8_t autopilot)
{
	mavlink_heartbeat_t *p = (mavlink_heartbeat_t *)&msg->payload[0];
	msg->msgid = MAVLINK_MSG_ID_HEARTBEAT;

	p->type = type; // uint8_t:Type of the MAV (quadrotor, helicopter, etc., up to 15 types, defined in MAV_TYPE ENUM)
	p->autopilot = autopilot; // uint8_t:Type of the Autopilot: 0: Generic, 1: PIXHAWK, 2: SLUGS, 3: Ardupilot (up to 15 types), defined in MAV_AUTOPILOT_TYPE ENUM

	p->mavlink_version = MAVLINK_VERSION; // uint8_t_mavlink_version:MAVLink version
	return mavlink_finalize_message(msg, system_id, component_id, MAVLINK_MSG_ID_HEARTBEAT_LEN);
}

/**
 * @brief Pack a heartbeat 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 type Type of the MAV (quadrotor, helicopter, etc., up to 15 types, defined in MAV_TYPE ENUM)
 * @param autopilot Type of the Autopilot: 0: Generic, 1: PIXHAWK, 2: SLUGS, 3: Ardupilot (up to 15 types), defined in MAV_AUTOPILOT_TYPE ENUM
 * @return length of the message in bytes (excluding serial stream start sign)
 */
static inline uint16_t mavlink_msg_heartbeat_pack_chan(uint8_t system_id, uint8_t component_id, uint8_t chan, mavlink_message_t* msg, uint8_t type, uint8_t autopilot)
{
	mavlink_heartbeat_t *p = (mavlink_heartbeat_t *)&msg->payload[0];
	msg->msgid = MAVLINK_MSG_ID_HEARTBEAT;

	p->type = type; // uint8_t:Type of the MAV (quadrotor, helicopter, etc., up to 15 types, defined in MAV_TYPE ENUM)
	p->autopilot = autopilot; // uint8_t:Type of the Autopilot: 0: Generic, 1: PIXHAWK, 2: SLUGS, 3: Ardupilot (up to 15 types), defined in MAV_AUTOPILOT_TYPE ENUM

	p->mavlink_version = MAVLINK_VERSION; // uint8_t_mavlink_version:MAVLink version
	return mavlink_finalize_message_chan(msg, system_id, component_id, chan, MAVLINK_MSG_ID_HEARTBEAT_LEN);
}

/**
 * @brief Encode a heartbeat 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 heartbeat C-struct to read the message contents from
 */
static inline uint16_t mavlink_msg_heartbeat_encode(uint8_t system_id, uint8_t component_id, mavlink_message_t* msg, const mavlink_heartbeat_t* heartbeat)
{
	return mavlink_msg_heartbeat_pack(system_id, component_id, msg, heartbeat->type, heartbeat->autopilot);
}

/**
 * @brief Send a heartbeat message
 * @param chan MAVLink channel to send the message
 *
 * @param type Type of the MAV (quadrotor, helicopter, etc., up to 15 types, defined in MAV_TYPE ENUM)
 * @param autopilot Type of the Autopilot: 0: Generic, 1: PIXHAWK, 2: SLUGS, 3: Ardupilot (up to 15 types), defined in MAV_AUTOPILOT_TYPE ENUM
 */


#ifdef MAVLINK_USE_CONVENIENCE_FUNCTIONS
static inline void mavlink_msg_heartbeat_send(mavlink_channel_t chan, uint8_t type, uint8_t autopilot)
{
	mavlink_header_t hdr;
	mavlink_heartbeat_t payload;
	uint16_t checksum;
	mavlink_heartbeat_t *p = &payload;

	p->type = type; // uint8_t:Type of the MAV (quadrotor, helicopter, etc., up to 15 types, defined in MAV_TYPE ENUM)
	p->autopilot = autopilot; // uint8_t:Type of the Autopilot: 0: Generic, 1: PIXHAWK, 2: SLUGS, 3: Ardupilot (up to 15 types), defined in MAV_AUTOPILOT_TYPE ENUM

	p->mavlink_version = MAVLINK_VERSION; // uint8_t_mavlink_version:MAVLink version
	hdr.STX = MAVLINK_STX;
	hdr.len = MAVLINK_MSG_ID_HEARTBEAT_LEN;
	hdr.msgid = MAVLINK_MSG_ID_HEARTBEAT;
	hdr.sysid = mavlink_system.sysid;
	hdr.compid = mavlink_system.compid;
	hdr.seq = mavlink_get_channel_status(chan)->current_tx_seq;
	mavlink_get_channel_status(chan)->current_tx_seq = hdr.seq + 1;
	mavlink_send_mem(chan, (uint8_t *)&hdr.STX, MAVLINK_NUM_HEADER_BYTES );

	crc_init(&checksum);
	checksum = crc_calculate_mem((uint8_t *)&hdr.len, &checksum, MAVLINK_CORE_HEADER_LEN);
	checksum = crc_calculate_mem((uint8_t *)&payload, &checksum, hdr.len );
	hdr.ck_a = (uint8_t)(checksum & 0xFF); ///< Low byte
	hdr.ck_b = (uint8_t)(checksum >> 8); ///< High byte

	mavlink_send_mem(chan, (uint8_t *)&payload, hdr.len);
	mavlink_send_mem(chan, (uint8_t *)&hdr.ck_a, MAVLINK_NUM_CHECKSUM_BYTES);
}

#endif
// MESSAGE HEARTBEAT UNPACKING

/**
 * @brief Get field type from heartbeat message
 *
 * @return Type of the MAV (quadrotor, helicopter, etc., up to 15 types, defined in MAV_TYPE ENUM)
 */
static inline uint8_t mavlink_msg_heartbeat_get_type(const mavlink_message_t* msg)
{
	mavlink_heartbeat_t *p = (mavlink_heartbeat_t *)&msg->payload[0];
	return (uint8_t)(p->type);
}

/**
 * @brief Get field autopilot from heartbeat message
 *
 * @return Type of the Autopilot: 0: Generic, 1: PIXHAWK, 2: SLUGS, 3: Ardupilot (up to 15 types), defined in MAV_AUTOPILOT_TYPE ENUM
 */
static inline uint8_t mavlink_msg_heartbeat_get_autopilot(const mavlink_message_t* msg)
{
	mavlink_heartbeat_t *p = (mavlink_heartbeat_t *)&msg->payload[0];
	return (uint8_t)(p->autopilot);
}

/**
 * @brief Get field mavlink_version from heartbeat message
 *
 * @return MAVLink version
 */
static inline uint8_t mavlink_msg_heartbeat_get_mavlink_version(const mavlink_message_t* msg)
{
	mavlink_heartbeat_t *p = (mavlink_heartbeat_t *)&msg->payload[0];
	return (uint8_t)(p->mavlink_version);
}

/**
 * @brief Decode a heartbeat message into a struct
 *
 * @param msg The message to decode
 * @param heartbeat C-struct to decode the message contents into
 */
static inline void mavlink_msg_heartbeat_decode(const mavlink_message_t* msg, mavlink_heartbeat_t* heartbeat)
{
	memcpy( heartbeat, msg->payload, sizeof(mavlink_heartbeat_t));
}