ardupilot/libraries/GCS_MAVLink/GCS_MAVLink.h

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/// @file GCS_MAVLink.h
/// @brief One size fits all header for MAVLink integration.
#pragma once
#include <AP_Param/AP_Param.h>
// we have separate helpers disabled to make it possible
// to select MAVLink 1.0 in the arduino GUI build
#define MAVLINK_SEPARATE_HELPERS
#define MAVLINK_NO_CONVERSION_HELPERS
#define MAVLINK_SEND_UART_BYTES(chan, buf, len) comm_send_buffer(chan, buf, len)
#define MAVLINK_START_UART_SEND(chan, size) comm_send_lock(chan)
#define MAVLINK_END_UART_SEND(chan, size) comm_send_unlock(chan)
#if CONFIG_HAL_BOARD == HAL_BOARD_SITL
// allow extra mavlink channels in SITL for:
// Vicon
#define MAVLINK_COMM_NUM_BUFFERS 6
#else
// allow five telemetry ports
#define MAVLINK_COMM_NUM_BUFFERS 5
#endif
/*
The MAVLink protocol code generator does its own alignment, so
alignment cast warnings can be ignored
*/
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wcast-align"
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#include "include/mavlink/v2.0/ardupilotmega/version.h"
#define MAVLINK_MAX_PAYLOAD_LEN 255
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#include "include/mavlink/v2.0/mavlink_types.h"
/// MAVLink stream used for uartA
extern AP_HAL::UARTDriver *mavlink_comm_port[MAVLINK_COMM_NUM_BUFFERS];
extern bool gcs_alternative_active[MAVLINK_COMM_NUM_BUFFERS];
/// MAVLink system definition
extern mavlink_system_t mavlink_system;
/// Sanity check MAVLink channel
///
/// @param chan Channel to send to
static inline bool valid_channel(mavlink_channel_t chan)
{
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wtautological-constant-out-of-range-compare"
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return chan < MAVLINK_COMM_NUM_BUFFERS;
#pragma clang diagnostic pop
}
void comm_send_buffer(mavlink_channel_t chan, const uint8_t *buf, uint8_t len);
/// Check for available data on the nominated MAVLink channel
///
/// @param chan Channel to check
/// @returns Number of bytes available
uint16_t comm_get_available(mavlink_channel_t chan);
/// Check for available transmit space on the nominated MAVLink channel
///
/// @param chan Channel to check
/// @returns Number of bytes available
uint16_t comm_get_txspace(mavlink_channel_t chan);
#define MAVLINK_USE_CONVENIENCE_FUNCTIONS
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#include "include/mavlink/v2.0/ardupilotmega/mavlink.h"
// return a MAVLink variable type given a AP_Param type
uint8_t mav_var_type(enum ap_var_type t);
// lock and unlock a channel, for multi-threaded mavlink send
void comm_send_lock(mavlink_channel_t chan);
void comm_send_unlock(mavlink_channel_t chan);
#pragma GCC diagnostic pop