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PX4-Autopilot/src/modules/mavlink/mavlink_main.cpp
Anton Babushkin a1ea89ea2d mavlink: more precise message streams timing
2014-03-01 19:42:29 +04:00

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/****************************************************************************
*
* Copyright (c) 2012-2014 PX4 Development Team. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name PX4 nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/**
* @file mavlink_main.cpp
* MAVLink 1.0 protocol implementation.
*
* @author Lorenz Meier <lm@inf.ethz.ch>
* @author Julian Oes <joes@student.ethz.ch>
* @author Anton Babushkin <anton.babushkin@me.com>
*/
#include <nuttx/config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <assert.h>
#include <math.h>
#include <poll.h>
#include <termios.h>
#include <time.h>
#include <math.h> /* isinf / isnan checks */
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <drivers/device/device.h>
#include <drivers/drv_hrt.h>
#include <arch/board/board.h>
#include <systemlib/param/param.h>
#include <systemlib/err.h>
#include <systemlib/perf_counter.h>
#include <systemlib/systemlib.h>
#include <geo/geo.h>
#include <dataman/dataman.h>
#include <mathlib/mathlib.h>
#include <mavlink/mavlink_log.h>
#include <uORB/topics/parameter_update.h>
#include <uORB/topics/mission.h>
#include <uORB/topics/mission_result.h>
#include "mavlink_bridge_header.h"
#include "mavlink_main.h"
#include "mavlink_messages.h"
#include "mavlink_receiver.h"
#include "mavlink_rate_limiter.h"
/* oddly, ERROR is not defined for c++ */
#ifdef ERROR
# undef ERROR
#endif
static const int ERROR = -1;
#define DEFAULT_DEVICE_NAME "/dev/ttyS1"
#define MAX_DATA_RATE 10000 // max data rate in bytes/s
#define MAIN_LOOP_DELAY 10000 // 100 Hz @ 1000 bytes/s data rate
static Mavlink *_mavlink_instances = nullptr;
/* TODO: if this is a class member it crashes */
static struct file_operations fops;
/**
* mavlink app start / stop handling function
*
* @ingroup apps
*/
extern "C" __EXPORT int mavlink_main(int argc, char *argv[]);
/*
* Internal function to send the bytes through the right serial port
*/
void
mavlink_send_uart_bytes(mavlink_channel_t channel, const uint8_t *ch, int length)
{
int uart = -1;
switch (channel) {
case MAVLINK_COMM_0:
uart = Mavlink::get_uart_fd(0);
break;
case MAVLINK_COMM_1:
uart = Mavlink::get_uart_fd(1);
break;
case MAVLINK_COMM_2:
uart = Mavlink::get_uart_fd(2);
break;
case MAVLINK_COMM_3:
uart = Mavlink::get_uart_fd(3);
break;
#ifdef MAVLINK_COMM_4
case MAVLINK_COMM_4:
uart = Mavlink::get_uart_fd(4);
break;
#endif
#ifdef MAVLINK_COMM_5
case MAVLINK_COMM_5:
uart = Mavlink::get_uart_fd(5);
break;
#endif
#ifdef MAVLINK_COMM_6
case MAVLINK_COMM_6:
uart = Mavlink::get_uart_fd(6);
break;
#endif
}
ssize_t desired = (sizeof(uint8_t) * length);
ssize_t ret = write(uart, ch, desired);
if (ret != desired) {
warn("write err");
}
}
static void usage(void);
Mavlink::Mavlink() :
next(nullptr),
_device_name(DEFAULT_DEVICE_NAME),
_task_should_exit(false),
_mavlink_fd(-1),
_task_running(false),
_mavlink_hil_enabled(false),
_main_loop_delay(1000),
_subscriptions(nullptr),
_streams(nullptr),
_mission_pub(-1),
_mavlink_param_queue_index(0),
_subscribe_to_stream(nullptr),
_subscribe_to_stream_rate(0.0f),
/* performance counters */
_loop_perf(perf_alloc(PC_ELAPSED, "mavlink"))
{
_wpm = &_wpm_s;
fops.ioctl = (int (*)(file *, int, long unsigned int))&mavlink_dev_ioctl;
}
Mavlink::~Mavlink()
{
if (_task_running) {
/* task wakes up every 10ms or so at the longest */
_task_should_exit = true;
/* wait for a second for the task to quit at our request */
unsigned i = 0;
do {
/* wait 20ms */
usleep(20000);
/* if we have given up, kill it */
if (++i > 50) {
//TODO store main task handle in Mavlink instance to allow killing task
//task_delete(_mavlink_task);
break;
}
} while (_task_running);
}
}
void
Mavlink::set_mode(enum MAVLINK_MODE mode)
{
_mode = mode;
}
int
Mavlink::instance_count()
{
unsigned inst_index = 0;
Mavlink *inst;
LL_FOREACH(::_mavlink_instances, inst) {
inst_index++;
}
return inst_index;
}
Mavlink *
Mavlink::new_instance()
{
Mavlink *inst = new Mavlink();
Mavlink *next = ::_mavlink_instances;
/* create the first instance at _head */
if (::_mavlink_instances == nullptr) {
::_mavlink_instances = inst;
/* afterwards follow the next and append the instance */
} else {
while (next->next != nullptr) {
next = next->next;
}
/* now parent has a null pointer, fill it */
next->next = inst;
}
return inst;
}
Mavlink *
Mavlink::get_instance(unsigned instance)
{
Mavlink *inst;
unsigned inst_index = 0;
LL_FOREACH(::_mavlink_instances, inst) {
if (instance == inst_index) {
return inst;
}
inst_index++;
}
return nullptr;
}
Mavlink *
Mavlink::get_instance_for_device(const char *device_name)
{
Mavlink *inst;
LL_FOREACH(::_mavlink_instances, inst) {
if (strcmp(inst->_device_name, device_name) == 0) {
return inst;
}
}
return nullptr;
}
int
Mavlink::destroy_all_instances()
{
/* start deleting from the end */
Mavlink *inst_to_del = nullptr;
Mavlink *next_inst = ::_mavlink_instances;
unsigned iterations = 0;
warnx("waiting for instances to stop");
while (next_inst != nullptr) {
inst_to_del = next_inst;
next_inst = inst_to_del->next;
/* set flag to stop thread and wait for all threads to finish */
inst_to_del->_task_should_exit = true;
while (inst_to_del->_task_running) {
printf(".");
fflush(stdout);
usleep(10000);
iterations++;
if (iterations > 1000) {
warnx("ERROR: Couldn't stop all mavlink instances.");
return ERROR;
}
}
delete inst_to_del;
}
/* reset head */
::_mavlink_instances = nullptr;
printf("\n");
warnx("all instances stopped");
return OK;
}
bool
Mavlink::instance_exists(const char *device_name, Mavlink *self)
{
Mavlink *inst = ::_mavlink_instances;
while (inst != nullptr) {
/* don't compare with itself */
if (inst != self && !strcmp(device_name, inst->_device_name)) {
return true;
}
inst = inst->next;
}
return false;
}
int
Mavlink::get_uart_fd(unsigned index)
{
Mavlink *inst = get_instance(index);
if (inst) {
return inst->get_uart_fd();
}
return -1;
}
int
Mavlink::get_uart_fd()
{
return _uart_fd;
}
mavlink_channel_t
Mavlink::get_channel()
{
return _channel;
}
/****************************************************************************
* MAVLink text message logger
****************************************************************************/
int
Mavlink::mavlink_dev_ioctl(struct file *filep, int cmd, unsigned long arg)
{
switch (cmd) {
case (int)MAVLINK_IOC_SEND_TEXT_INFO:
case (int)MAVLINK_IOC_SEND_TEXT_CRITICAL:
case (int)MAVLINK_IOC_SEND_TEXT_EMERGENCY: {
const char *txt = (const char *)arg;
// printf("logmsg: %s\n", txt);
struct mavlink_logmessage msg;
strncpy(msg.text, txt, sizeof(msg.text));
Mavlink *inst = ::_mavlink_instances;
while (inst != nullptr) {
mavlink_logbuffer_write(&inst->_logbuffer, &msg);
inst->_total_counter++;
inst = inst->next;
}
return OK;
}
default:
return ENOTTY;
}
}
void Mavlink::mavlink_update_system(void)
{
static bool initialized = false;
static param_t param_system_id;
static param_t param_component_id;
static param_t param_system_type;
if (!initialized) {
param_system_id = param_find("MAV_SYS_ID");
param_component_id = param_find("MAV_COMP_ID");
param_system_type = param_find("MAV_TYPE");
initialized = true;
}
/* update system and component id */
int32_t system_id;
param_get(param_system_id, &system_id);
if (system_id > 0 && system_id < 255) {
mavlink_system.sysid = system_id;
}
int32_t component_id;
param_get(param_component_id, &component_id);
if (component_id > 0 && component_id < 255) {
mavlink_system.compid = component_id;
}
int32_t system_type;
param_get(param_system_type, &system_type);
if (system_type >= 0 && system_type < MAV_TYPE_ENUM_END) {
mavlink_system.type = system_type;
}
}
int Mavlink::mavlink_open_uart(int baud, const char *uart_name, struct termios *uart_config_original, bool *is_usb)
{
/* process baud rate */
int speed;
switch (baud) {
case 0: speed = B0; break;
case 50: speed = B50; break;
case 75: speed = B75; break;
case 110: speed = B110; break;
case 134: speed = B134; break;
case 150: speed = B150; break;
case 200: speed = B200; break;
case 300: speed = B300; break;
case 600: speed = B600; break;
case 1200: speed = B1200; break;
case 1800: speed = B1800; break;
case 2400: speed = B2400; break;
case 4800: speed = B4800; break;
case 9600: speed = B9600; break;
case 19200: speed = B19200; break;
case 38400: speed = B38400; break;
case 57600: speed = B57600; break;
case 115200: speed = B115200; break;
case 230400: speed = B230400; break;
case 460800: speed = B460800; break;
case 921600: speed = B921600; break;
default:
warnx("ERROR: Unsupported baudrate: %d\n\tsupported examples:\n\t9600, 19200, 38400, 57600\t\n115200\n230400\n460800\n921600\n", baud);
return -EINVAL;
}
/* open uart */
_uart_fd = open(uart_name, O_RDWR | O_NOCTTY);
/* Try to set baud rate */
struct termios uart_config;
int termios_state;
*is_usb = false;
/* Back up the original uart configuration to restore it after exit */
if ((termios_state = tcgetattr(_uart_fd, uart_config_original)) < 0) {
warnx("ERROR get termios config %s: %d\n", uart_name, termios_state);
close(_uart_fd);
return -1;
}
/* Fill the struct for the new configuration */
tcgetattr(_uart_fd, &uart_config);
/* Clear ONLCR flag (which appends a CR for every LF) */
uart_config.c_oflag &= ~ONLCR;
/* USB serial is indicated by /dev/ttyACM0*/
if (strcmp(uart_name, "/dev/ttyACM0") != OK && strcmp(uart_name, "/dev/ttyACM1") != OK) {
/* Set baud rate */
if (cfsetispeed(&uart_config, speed) < 0 || cfsetospeed(&uart_config, speed) < 0) {
warnx("ERROR setting baudrate / termios config for %s: %d (cfsetispeed, cfsetospeed)\n", uart_name, termios_state);
close(_uart_fd);
return -1;
}
}
if ((termios_state = tcsetattr(_uart_fd, TCSANOW, &uart_config)) < 0) {
warnx("ERROR setting baudrate / termios config for %s (tcsetattr)\n", uart_name);
close(_uart_fd);
return -1;
}
return _uart_fd;
}
int
Mavlink::set_hil_enabled(bool hil_enabled)
{
int ret = OK;
/* Enable HIL */
if (hil_enabled && !_mavlink_hil_enabled) {
_mavlink_hil_enabled = true;
/* ramp up some HIL-related subscriptions */
unsigned hil_rate_interval;
if (_baudrate < 19200) {
/* 10 Hz */
hil_rate_interval = 100;
} else if (_baudrate < 38400) {
/* 10 Hz */
hil_rate_interval = 100;
} else if (_baudrate < 115200) {
/* 20 Hz */
hil_rate_interval = 50;
} else {
/* 200 Hz */
hil_rate_interval = 5;
}
// orb_set_interval(subs.spa_sub, hil_rate_interval);
// set_mavlink_interval_limit(MAVLINK_MSG_ID_SERVO_OUTPUT_RAW, hil_rate_interval);
}
if (!hil_enabled && _mavlink_hil_enabled) {
_mavlink_hil_enabled = false;
// orb_set_interval(subs.spa_sub, 200);
} else {
ret = ERROR;
}
return ret;
}
extern mavlink_system_t mavlink_system;
int Mavlink::mavlink_pm_queued_send()
{
if (_mavlink_param_queue_index < param_count()) {
mavlink_pm_send_param(param_for_index(_mavlink_param_queue_index));
_mavlink_param_queue_index++;
return 0;
} else {
return 1;
}
}
void Mavlink::mavlink_pm_start_queued_send()
{
_mavlink_param_queue_index = 0;
}
int Mavlink::mavlink_pm_send_param_for_index(uint16_t index)
{
return mavlink_pm_send_param(param_for_index(index));
}
int Mavlink::mavlink_pm_send_param_for_name(const char *name)
{
return mavlink_pm_send_param(param_find(name));
}
int Mavlink::mavlink_pm_send_param(param_t param)
{
if (param == PARAM_INVALID) { return 1; }
/* buffers for param transmission */
static char name_buf[MAVLINK_MSG_PARAM_VALUE_FIELD_PARAM_ID_LEN];
float val_buf;
static mavlink_message_t tx_msg;
/* query parameter type */
param_type_t type = param_type(param);
/* copy parameter name */
strncpy((char *)name_buf, param_name(param), MAVLINK_MSG_PARAM_VALUE_FIELD_PARAM_ID_LEN);
/*
* Map onboard parameter type to MAVLink type,
* endianess matches (both little endian)
*/
uint8_t mavlink_type;
if (type == PARAM_TYPE_INT32) {
mavlink_type = MAVLINK_TYPE_INT32_T;
} else if (type == PARAM_TYPE_FLOAT) {
mavlink_type = MAVLINK_TYPE_FLOAT;
} else {
mavlink_type = MAVLINK_TYPE_FLOAT;
}
/*
* get param value, since MAVLink encodes float and int params in the same
* space during transmission, copy param onto float val_buf
*/
int ret;
if ((ret = param_get(param, &val_buf)) != OK) {
return ret;
}
mavlink_msg_param_value_pack_chan(mavlink_system.sysid,
mavlink_system.compid,
MAVLINK_COMM_0,
&tx_msg,
name_buf,
val_buf,
mavlink_type,
param_count(),
param_get_index(param));
mavlink_missionlib_send_message(&tx_msg);
return OK;
}
void Mavlink::mavlink_pm_message_handler(const mavlink_channel_t chan, const mavlink_message_t *msg)
{
switch (msg->msgid) {
case MAVLINK_MSG_ID_PARAM_REQUEST_LIST: {
/* Start sending parameters */
mavlink_pm_start_queued_send();
mavlink_missionlib_send_gcs_string("[mavlink pm] sending list");
} break;
case MAVLINK_MSG_ID_PARAM_SET: {
/* Handle parameter setting */
if (msg->msgid == MAVLINK_MSG_ID_PARAM_SET) {
mavlink_param_set_t mavlink_param_set;
mavlink_msg_param_set_decode(msg, &mavlink_param_set);
if (mavlink_param_set.target_system == mavlink_system.sysid && ((mavlink_param_set.target_component == mavlink_system.compid) || (mavlink_param_set.target_component == MAV_COMP_ID_ALL))) {
/* local name buffer to enforce null-terminated string */
char name[MAVLINK_MSG_PARAM_VALUE_FIELD_PARAM_ID_LEN + 1];
strncpy(name, mavlink_param_set.param_id, MAVLINK_MSG_PARAM_VALUE_FIELD_PARAM_ID_LEN);
/* enforce null termination */
name[MAVLINK_MSG_PARAM_VALUE_FIELD_PARAM_ID_LEN] = '\0';
/* attempt to find parameter, set and send it */
param_t param = param_find(name);
if (param == PARAM_INVALID) {
char buf[MAVLINK_MSG_STATUSTEXT_FIELD_TEXT_LEN];
sprintf(buf, "[mavlink pm] unknown: %s", name);
mavlink_missionlib_send_gcs_string(buf);
} else {
/* set and send parameter */
param_set(param, &(mavlink_param_set.param_value));
mavlink_pm_send_param(param);
}
}
}
} break;
case MAVLINK_MSG_ID_PARAM_REQUEST_READ: {
mavlink_param_request_read_t mavlink_param_request_read;
mavlink_msg_param_request_read_decode(msg, &mavlink_param_request_read);
if (mavlink_param_request_read.target_system == mavlink_system.sysid && ((mavlink_param_request_read.target_component == mavlink_system.compid) || (mavlink_param_request_read.target_component == MAV_COMP_ID_ALL))) {
/* when no index is given, loop through string ids and compare them */
if (mavlink_param_request_read.param_index == -1) {
/* local name buffer to enforce null-terminated string */
char name[MAVLINK_MSG_PARAM_VALUE_FIELD_PARAM_ID_LEN + 1];
strncpy(name, mavlink_param_request_read.param_id, MAVLINK_MSG_PARAM_VALUE_FIELD_PARAM_ID_LEN);
/* enforce null termination */
name[MAVLINK_MSG_PARAM_VALUE_FIELD_PARAM_ID_LEN] = '\0';
/* attempt to find parameter and send it */
mavlink_pm_send_param_for_name(name);
} else {
/* when index is >= 0, send this parameter again */
mavlink_pm_send_param_for_index(mavlink_param_request_read.param_index);
}
}
} break;
}
}
void Mavlink::publish_mission()
{
/* Initialize mission publication if necessary */
if (_mission_pub < 0) {
_mission_pub = orb_advertise(ORB_ID(mission), &mission);
} else {
orb_publish(ORB_ID(mission), _mission_pub, &mission);
}
}
int Mavlink::map_mavlink_mission_item_to_mission_item(const mavlink_mission_item_t *mavlink_mission_item, struct mission_item_s *mission_item)
{
/* only support global waypoints for now */
switch (mavlink_mission_item->frame) {
case MAV_FRAME_GLOBAL:
mission_item->lat = (double)mavlink_mission_item->x;
mission_item->lon = (double)mavlink_mission_item->y;
mission_item->altitude = mavlink_mission_item->z;
mission_item->altitude_is_relative = false;
break;
case MAV_FRAME_GLOBAL_RELATIVE_ALT:
mission_item->lat = (double)mavlink_mission_item->x;
mission_item->lon = (double)mavlink_mission_item->y;
mission_item->altitude = mavlink_mission_item->z;
mission_item->altitude_is_relative = true;
break;
case MAV_FRAME_LOCAL_NED:
case MAV_FRAME_LOCAL_ENU:
return MAV_MISSION_UNSUPPORTED_FRAME;
case MAV_FRAME_MISSION:
default:
return MAV_MISSION_ERROR;
}
switch (mavlink_mission_item->command) {
case MAV_CMD_NAV_TAKEOFF:
mission_item->pitch_min = mavlink_mission_item->param2;
break;
default:
mission_item->acceptance_radius = mavlink_mission_item->param2;
break;
}
mission_item->yaw = _wrap_pi(mavlink_mission_item->param4 * M_DEG_TO_RAD_F);
mission_item->loiter_radius = fabsf(mavlink_mission_item->param3);
mission_item->loiter_direction = (mavlink_mission_item->param3 > 0) ? 1 : -1; /* 1 if positive CW, -1 if negative CCW */
mission_item->nav_cmd = (NAV_CMD)mavlink_mission_item->command;
mission_item->time_inside = mavlink_mission_item->param1;
mission_item->autocontinue = mavlink_mission_item->autocontinue;
// mission_item->index = mavlink_mission_item->seq;
mission_item->origin = ORIGIN_MAVLINK;
return OK;
}
int Mavlink::map_mission_item_to_mavlink_mission_item(const struct mission_item_s *mission_item, mavlink_mission_item_t *mavlink_mission_item)
{
if (mission_item->altitude_is_relative) {
mavlink_mission_item->frame = MAV_FRAME_GLOBAL;
} else {
mavlink_mission_item->frame = MAV_FRAME_GLOBAL_RELATIVE_ALT;
}
switch (mission_item->nav_cmd) {
case NAV_CMD_TAKEOFF:
mavlink_mission_item->param2 = mission_item->pitch_min;
break;
default:
mavlink_mission_item->param2 = mission_item->acceptance_radius;
break;
}
mavlink_mission_item->x = (float)mission_item->lat;
mavlink_mission_item->y = (float)mission_item->lon;
mavlink_mission_item->z = mission_item->altitude;
mavlink_mission_item->param4 = mission_item->yaw * M_RAD_TO_DEG_F;
mavlink_mission_item->param3 = mission_item->loiter_radius * (float)mission_item->loiter_direction;
mavlink_mission_item->command = mission_item->nav_cmd;
mavlink_mission_item->param1 = mission_item->time_inside;
mavlink_mission_item->autocontinue = mission_item->autocontinue;
// mavlink_mission_item->seq = mission_item->index;
return OK;
}
void Mavlink::mavlink_wpm_init(mavlink_wpm_storage *state)
{
state->size = 0;
state->max_size = MAVLINK_WPM_MAX_WP_COUNT;
state->current_state = MAVLINK_WPM_STATE_IDLE;
state->current_partner_sysid = 0;
state->current_partner_compid = 0;
state->timestamp_lastaction = 0;
state->timestamp_last_send_setpoint = 0;
state->timeout = MAVLINK_WPM_PROTOCOL_TIMEOUT_DEFAULT;
state->current_dataman_id = 0;
}
/*
* @brief Sends an waypoint ack message
*/
void Mavlink::mavlink_wpm_send_waypoint_ack(uint8_t sysid, uint8_t compid, uint8_t type)
{
mavlink_message_t msg;
mavlink_mission_ack_t wpa;
wpa.target_system = sysid;
wpa.target_component = compid;
wpa.type = type;
mavlink_msg_mission_ack_encode(mavlink_system.sysid, _mavlink_wpm_comp_id, &msg, &wpa);
mavlink_missionlib_send_message(&msg);
if (_verbose) { warnx("Sent waypoint ack (%u) to ID %u", wpa.type, wpa.target_system); }
}
/*
* @brief Broadcasts the new target waypoint and directs the MAV to fly there
*
* This function broadcasts its new active waypoint sequence number and
* sends a message to the controller, advising it to fly to the coordinates
* of the waypoint with a given orientation
*
* @param seq The waypoint sequence number the MAV should fly to.
*/
void Mavlink::mavlink_wpm_send_waypoint_current(uint16_t seq)
{
if (seq < _wpm->size) {
mavlink_message_t msg;
mavlink_mission_current_t wpc;
wpc.seq = seq;
mavlink_msg_mission_current_encode(mavlink_system.sysid, _mavlink_wpm_comp_id, &msg, &wpc);
mavlink_missionlib_send_message(&msg);
} else if (seq == 0 && _wpm->size == 0) {
/* don't broadcast if no WPs */
} else {
mavlink_missionlib_send_gcs_string("ERROR: wp index out of bounds");
if (_verbose) { warnx("ERROR: index out of bounds"); }
}
}
void Mavlink::mavlink_wpm_send_waypoint_count(uint8_t sysid, uint8_t compid, uint16_t count)
{
mavlink_message_t msg;
mavlink_mission_count_t wpc;
wpc.target_system = sysid;
wpc.target_component = compid;
wpc.count = mission.count;
mavlink_msg_mission_count_encode(mavlink_system.sysid, _mavlink_wpm_comp_id, &msg, &wpc);
mavlink_missionlib_send_message(&msg);
if (_verbose) { warnx("Sent waypoint count (%u) to ID %u", wpc.count, wpc.target_system); }
}
void Mavlink::mavlink_wpm_send_waypoint(uint8_t sysid, uint8_t compid, uint16_t seq)
{
struct mission_item_s mission_item;
ssize_t len = sizeof(struct mission_item_s);
dm_item_t dm_current;
if (_wpm->current_dataman_id == 0) {
dm_current = DM_KEY_WAYPOINTS_OFFBOARD_0;
} else {
dm_current = DM_KEY_WAYPOINTS_OFFBOARD_1;
}
if (dm_read(dm_current, seq, &mission_item, len) == len) {
/* create mission_item_s from mavlink_mission_item_t */
mavlink_mission_item_t wp;
map_mission_item_to_mavlink_mission_item(&mission_item, &wp);
mavlink_message_t msg;
wp.target_system = sysid;
wp.target_component = compid;
wp.seq = seq;
mavlink_msg_mission_item_encode(mavlink_system.sysid, _mavlink_wpm_comp_id, &msg, &wp);
mavlink_missionlib_send_message(&msg);
if (_verbose) { warnx("Sent waypoint %u to ID %u", wp.seq, wp.target_system); }
} else {
mavlink_wpm_send_waypoint_ack(_wpm->current_partner_sysid, _wpm->current_partner_compid, MAV_MISSION_ERROR);
if (_verbose) { warnx("ERROR: could not read WP%u", seq); }
}
}
void Mavlink::mavlink_wpm_send_waypoint_request(uint8_t sysid, uint8_t compid, uint16_t seq)
{
if (seq < _wpm->max_size) {
mavlink_message_t msg;
mavlink_mission_request_t wpr;
wpr.target_system = sysid;
wpr.target_component = compid;
wpr.seq = seq;
mavlink_msg_mission_request_encode(mavlink_system.sysid, _mavlink_wpm_comp_id, &msg, &wpr);
mavlink_missionlib_send_message(&msg);
if (_verbose) { warnx("Sent waypoint request %u to ID %u", wpr.seq, wpr.target_system); }
} else {
mavlink_missionlib_send_gcs_string("ERROR: Waypoint index exceeds list capacity");
if (_verbose) { warnx("ERROR: Waypoint index exceeds list capacity"); }
}
}
/*
* @brief emits a message that a waypoint reached
*
* This function broadcasts a message that a waypoint is reached.
*
* @param seq The waypoint sequence number the MAV has reached.
*/
void Mavlink::mavlink_wpm_send_waypoint_reached(uint16_t seq)
{
mavlink_message_t msg;
mavlink_mission_item_reached_t wp_reached;
wp_reached.seq = seq;
mavlink_msg_mission_item_reached_encode(mavlink_system.sysid, _mavlink_wpm_comp_id, &msg, &wp_reached);
mavlink_missionlib_send_message(&msg);
if (_verbose) { warnx("Sent waypoint %u reached message", wp_reached.seq); }
}
void Mavlink::mavlink_waypoint_eventloop(uint64_t now)
{
/* check for timed-out operations */
if (now - _wpm->timestamp_lastaction > _wpm->timeout && _wpm->current_state != MAVLINK_WPM_STATE_IDLE) {
mavlink_missionlib_send_gcs_string("Operation timeout");
if (_verbose) { warnx("Last operation (state=%u) timed out, changing state to MAVLINK_WPM_STATE_IDLE", _wpm->current_state); }
_wpm->current_state = MAVLINK_WPM_STATE_IDLE;
_wpm->current_partner_sysid = 0;
_wpm->current_partner_compid = 0;
}
}
void Mavlink::mavlink_wpm_message_handler(const mavlink_message_t *msg)
{
uint64_t now = hrt_absolute_time();
switch (msg->msgid) {
case MAVLINK_MSG_ID_MISSION_ACK: {
mavlink_mission_ack_t wpa;
mavlink_msg_mission_ack_decode(msg, &wpa);
if ((msg->sysid == _wpm->current_partner_sysid && msg->compid == _wpm->current_partner_compid) && (wpa.target_system == mavlink_system.sysid /*&& wpa.target_component == mavlink_wpm_comp_id*/)) {
_wpm->timestamp_lastaction = now;
if (_wpm->current_state == MAVLINK_WPM_STATE_SENDLIST || _wpm->current_state == MAVLINK_WPM_STATE_SENDLIST_SENDWPS) {
if (_wpm->current_wp_id == _wpm->size - 1) {
_wpm->current_state = MAVLINK_WPM_STATE_IDLE;
_wpm->current_wp_id = 0;
}
}
} else {
mavlink_missionlib_send_gcs_string("REJ. WP CMD: curr partner id mismatch");
if (_verbose) { warnx("REJ. WP CMD: curr partner id mismatch"); }
}
break;
}
case MAVLINK_MSG_ID_MISSION_SET_CURRENT: {
mavlink_mission_set_current_t wpc;
mavlink_msg_mission_set_current_decode(msg, &wpc);
if (wpc.target_system == mavlink_system.sysid /*&& wpc.target_component == mavlink_wpm_comp_id*/) {
_wpm->timestamp_lastaction = now;
if (_wpm->current_state == MAVLINK_WPM_STATE_IDLE) {
if (wpc.seq < _wpm->size) {
mission.current_index = wpc.seq;
publish_mission();
/* don't answer yet, wait for the navigator to respond, then publish the mission_result */
// mavlink_wpm_send_waypoint_current(wpc.seq);
} else {
mavlink_missionlib_send_gcs_string("IGN WP CURR CMD: Not in list");
if (_verbose) { warnx("IGN WP CURR CMD: Not in list"); }
}
} else {
mavlink_missionlib_send_gcs_string("IGN WP CURR CMD: Busy");
if (_verbose) { warnx("IGN WP CURR CMD: Busy"); }
}
} else {
mavlink_missionlib_send_gcs_string("REJ. WP CMD: target id mismatch");
if (_verbose) { warnx("REJ. WP CMD: target id mismatch"); }
}
break;
}
case MAVLINK_MSG_ID_MISSION_REQUEST_LIST: {
mavlink_mission_request_list_t wprl;
mavlink_msg_mission_request_list_decode(msg, &wprl);
if (wprl.target_system == mavlink_system.sysid /*&& wprl.target_component == mavlink_wpm_comp_id*/) {
_wpm->timestamp_lastaction = now;
if (_wpm->current_state == MAVLINK_WPM_STATE_IDLE || _wpm->current_state == MAVLINK_WPM_STATE_SENDLIST) {
if (_wpm->size > 0) {
_wpm->current_state = MAVLINK_WPM_STATE_SENDLIST;
_wpm->current_wp_id = 0;
_wpm->current_partner_sysid = msg->sysid;
_wpm->current_partner_compid = msg->compid;
} else {
if (_verbose) { warnx("No waypoints send"); }
}
_wpm->current_count = _wpm->size;
mavlink_wpm_send_waypoint_count(msg->sysid, msg->compid, _wpm->current_count);
} else {
mavlink_missionlib_send_gcs_string("IGN REQUEST LIST: Busy");
if (_verbose) { warnx("IGN REQUEST LIST: Busy"); }
}
} else {
mavlink_missionlib_send_gcs_string("REJ. REQUEST LIST: target id mismatch");
if (_verbose) { warnx("REJ. REQUEST LIST: target id mismatch"); }
}
break;
}
case MAVLINK_MSG_ID_MISSION_REQUEST: {
mavlink_mission_request_t wpr;
mavlink_msg_mission_request_decode(msg, &wpr);
if (msg->sysid == _wpm->current_partner_sysid && msg->compid == _wpm->current_partner_compid && wpr.target_system == mavlink_system.sysid /*&& wpr.target_component == mavlink_wpm_comp_id*/) {
_wpm->timestamp_lastaction = now;
if (wpr.seq >= _wpm->size) {
mavlink_missionlib_send_gcs_string("REJ. WP CMD: Req. WP not in list");
if (_verbose) { warnx("Ignored MAVLINK_MSG_ID_MISSION_ITEM_REQUEST because the requested waypoint ID (%u) was out of bounds.", wpr.seq); }
break;
}
/*
* Ensure that we are in the correct state and that the first request has id 0
* and the following requests have either the last id (re-send last waypoint) or last_id+1 (next waypoint)
*/
if (_wpm->current_state == MAVLINK_WPM_STATE_SENDLIST) {
if (wpr.seq == 0) {
if (_verbose) { warnx("Got MAVLINK_MSG_ID_MISSION_ITEM_REQUEST of waypoint %u from %u changing state to MAVLINK_WPM_STATE_SENDLIST_SENDWPS", wpr.seq, msg->sysid); }
_wpm->current_state = MAVLINK_WPM_STATE_SENDLIST_SENDWPS;
} else {
mavlink_missionlib_send_gcs_string("REJ. WP CMD: First id != 0");
if (_verbose) { warnx("REJ. WP CMD: First id != 0"); }
break;
}
} else if (_wpm->current_state == MAVLINK_WPM_STATE_SENDLIST_SENDWPS) {
if (wpr.seq == _wpm->current_wp_id) {
if (_verbose) { warnx("Got MAVLINK_MSG_ID_MISSION_ITEM_REQUEST of waypoint %u (again) from %u staying in state MAVLINK_WPM_STATE_SENDLIST_SENDWPS", wpr.seq, msg->sysid); }
} else if (wpr.seq == _wpm->current_wp_id + 1) {
if (_verbose) { warnx("Got MAVLINK_MSG_ID_MISSION_ITEM_REQUEST of waypoint %u from %u staying in state MAVLINK_WPM_STATE_SENDLIST_SENDWPS", wpr.seq, msg->sysid); }
} else {
mavlink_missionlib_send_gcs_string("REJ. WP CMD: Req. WP was unexpected");
if (_verbose) { warnx("Ignored MAVLINK_MSG_ID_MISSION_ITEM_REQUEST because the requested waypoint ID (%u) was not the expected (%u or %u).", wpr.seq, _wpm->current_wp_id, _wpm->current_wp_id + 1); }
break;
}
} else {
mavlink_missionlib_send_gcs_string("REJ. WP CMD: Busy");
if (_verbose) { warnx("Ignored MAVLINK_MSG_ID_MISSION_ITEM_REQUEST because i'm doing something else already (state=%i).", _wpm->current_state); }
break;
}
_wpm->current_wp_id = wpr.seq;
_wpm->current_state = MAVLINK_WPM_STATE_SENDLIST_SENDWPS;
if (wpr.seq < _wpm->size) {
mavlink_wpm_send_waypoint(_wpm->current_partner_sysid, _wpm->current_partner_compid, _wpm->current_wp_id);
} else {
mavlink_wpm_send_waypoint_ack(_wpm->current_partner_sysid, _wpm->current_partner_compid, MAV_MISSION_ERROR);
if (_verbose) { warnx("ERROR: Waypoint %u out of bounds", wpr.seq); }
}
} else {
//we we're target but already communicating with someone else
if ((wpr.target_system == mavlink_system.sysid /*&& wpr.target_component == mavlink_wpm_comp_id*/) && !(msg->sysid == _wpm->current_partner_sysid && msg->compid == _wpm->current_partner_compid)) {
mavlink_missionlib_send_gcs_string("REJ. WP CMD: Busy");
if (_verbose) { warnx("Ignored MAVLINK_MSG_ID_MISSION_ITEM_REQUEST from ID %u because i'm already talking to ID %u.", msg->sysid, _wpm->current_partner_sysid); }
} else {
mavlink_missionlib_send_gcs_string("REJ. WP CMD: target id mismatch");
if (_verbose) { warnx("IGNORED WAYPOINT COMMAND BECAUSE TARGET SYSTEM AND COMPONENT OR COMM PARTNER ID MISMATCH"); }
}
}
break;
}
case MAVLINK_MSG_ID_MISSION_COUNT: {
mavlink_mission_count_t wpc;
mavlink_msg_mission_count_decode(msg, &wpc);
if (wpc.target_system == mavlink_system.sysid/* && wpc.target_component == mavlink_wpm_comp_id*/) {
_wpm->timestamp_lastaction = now;
if (_wpm->current_state == MAVLINK_WPM_STATE_IDLE) {
if (wpc.count > NUM_MISSIONS_SUPPORTED) {
if (_verbose) { warnx("Too many waypoints: %d, supported: %d", wpc.count, NUM_MISSIONS_SUPPORTED); }
mavlink_wpm_send_waypoint_ack(_wpm->current_partner_sysid, _wpm->current_partner_compid, MAV_MISSION_NO_SPACE);
break;
}
if (wpc.count == 0) {
mavlink_missionlib_send_gcs_string("COUNT 0");
if (_verbose) { warnx("got waypoint count of 0, clearing waypoint list and staying in state MAVLINK_WPM_STATE_IDLE"); }
break;
}
if (_verbose) { warnx("Got MAVLINK_MSG_ID_MISSION_ITEM_COUNT (%u) from %u changing state to MAVLINK_WPM_STATE_GETLIST", wpc.count, msg->sysid); }
_wpm->current_state = MAVLINK_WPM_STATE_GETLIST;
_wpm->current_wp_id = 0;
_wpm->current_partner_sysid = msg->sysid;
_wpm->current_partner_compid = msg->compid;
_wpm->current_count = wpc.count;
mavlink_wpm_send_waypoint_request(_wpm->current_partner_sysid, _wpm->current_partner_compid, _wpm->current_wp_id);
} else if (_wpm->current_state == MAVLINK_WPM_STATE_GETLIST) {
if (_wpm->current_wp_id == 0) {
mavlink_missionlib_send_gcs_string("WP CMD OK AGAIN");
if (_verbose) { warnx("Got MAVLINK_MSG_ID_MISSION_ITEM_COUNT (%u) again from %u", wpc.count, msg->sysid); }
} else {
mavlink_missionlib_send_gcs_string("REJ. WP CMD: Busy");
if (_verbose) { warnx("Ignored MAVLINK_MSG_ID_MISSION_ITEM_COUNT because i'm already receiving waypoint %u.", _wpm->current_wp_id); }
}
} else {
mavlink_missionlib_send_gcs_string("IGN MISSION_COUNT CMD: Busy");
if (_verbose) { warnx("IGN MISSION_COUNT CMD: Busy"); }
}
} else {
mavlink_missionlib_send_gcs_string("REJ. WP COUNT CMD: target id mismatch");
if (_verbose) { warnx("IGNORED WAYPOINT COUNT COMMAND BECAUSE TARGET SYSTEM AND COMPONENT OR COMM PARTNER ID MISMATCH"); }
}
}
break;
case MAVLINK_MSG_ID_MISSION_ITEM: {
mavlink_mission_item_t wp;
mavlink_msg_mission_item_decode(msg, &wp);
if (wp.target_system == mavlink_system.sysid && wp.target_component == _mavlink_wpm_comp_id) {
_wpm->timestamp_lastaction = now;
/*
* ensure that we are in the correct state and that the first waypoint has id 0
* and the following waypoints have the correct ids
*/
if (_wpm->current_state == MAVLINK_WPM_STATE_GETLIST) {
if (wp.seq != 0) {
mavlink_missionlib_send_gcs_string("Ignored MISSION_ITEM WP not 0");
warnx("Ignored MAVLINK_MSG_ID_MISSION_ITEM because the first waypoint ID (%u) was not 0.", wp.seq);
break;
}
} else if (_wpm->current_state == MAVLINK_WPM_STATE_GETLIST_GETWPS) {
if (wp.seq >= _wpm->current_count) {
mavlink_missionlib_send_gcs_string("Ignored MISSION_ITEM WP out of bounds");
warnx("Ignored MAVLINK_MSG_ID_MISSION_ITEM because the waypoint ID (%u) was out of bounds.", wp.seq);
break;
}
if (wp.seq != _wpm->current_wp_id) {
warnx("Ignored MAVLINK_MSG_ID_MISSION_ITEM because the waypoint ID (%u) was not the expected %u.", wp.seq, _wpm->current_wp_id);
mavlink_wpm_send_waypoint_request(_wpm->current_partner_sysid, _wpm->current_partner_compid, _wpm->current_wp_id);
break;
}
}
_wpm->current_state = MAVLINK_WPM_STATE_GETLIST_GETWPS;
struct mission_item_s mission_item;
int ret = map_mavlink_mission_item_to_mission_item(&wp, &mission_item);
if (ret != OK) {
mavlink_wpm_send_waypoint_ack(_wpm->current_partner_sysid, _wpm->current_partner_compid, ret);
_wpm->current_state = MAVLINK_WPM_STATE_IDLE;
break;
}
ssize_t len = sizeof(struct mission_item_s);
dm_item_t dm_next;
if (_wpm->current_dataman_id == 0) {
dm_next = DM_KEY_WAYPOINTS_OFFBOARD_1;
mission.dataman_id = 1;
} else {
dm_next = DM_KEY_WAYPOINTS_OFFBOARD_0;
mission.dataman_id = 0;
}
if (dm_write(dm_next, wp.seq, DM_PERSIST_IN_FLIGHT_RESET, &mission_item, len) != len) {
mavlink_wpm_send_waypoint_ack(_wpm->current_partner_sysid, _wpm->current_partner_compid, MAV_MISSION_ERROR);
_wpm->current_state = MAVLINK_WPM_STATE_IDLE;
break;
}
// if (wp.current) {
// warnx("current is: %d", wp.seq);
// mission.current_index = wp.seq;
// }
// XXX ignore current set
mission.current_index = -1;
_wpm->current_wp_id = wp.seq + 1;
if (_wpm->current_wp_id == _wpm->current_count && _wpm->current_state == MAVLINK_WPM_STATE_GETLIST_GETWPS) {
if (_verbose) { warnx("Got all %u waypoints, changing state to MAVLINK_WPM_STATE_IDLE", _wpm->current_count); }
mavlink_wpm_send_waypoint_ack(_wpm->current_partner_sysid, _wpm->current_partner_compid, MAV_MISSION_ACCEPTED);
mission.count = _wpm->current_count;
publish_mission();
_wpm->current_dataman_id = mission.dataman_id;
_wpm->size = _wpm->current_count;
_wpm->current_state = MAVLINK_WPM_STATE_IDLE;
} else {
mavlink_wpm_send_waypoint_request(_wpm->current_partner_sysid, _wpm->current_partner_compid, _wpm->current_wp_id);
}
} else {
mavlink_missionlib_send_gcs_string("REJ. WP CMD: target id mismatch");
if (_verbose) { warnx("IGNORED WAYPOINT COMMAND BECAUSE TARGET SYSTEM AND COMPONENT OR COMM PARTNER ID MISMATCH"); }
}
break;
}
case MAVLINK_MSG_ID_MISSION_CLEAR_ALL: {
mavlink_mission_clear_all_t wpca;
mavlink_msg_mission_clear_all_decode(msg, &wpca);
if (wpca.target_system == mavlink_system.sysid /*&& wpca.target_component == mavlink_wpm_comp_id */) {
if (_wpm->current_state == MAVLINK_WPM_STATE_IDLE) {
_wpm->timestamp_lastaction = now;
_wpm->size = 0;
/* prepare mission topic */
mission.dataman_id = -1;
mission.count = 0;
mission.current_index = -1;
publish_mission();
if (dm_clear(DM_KEY_WAYPOINTS_OFFBOARD_0) == OK && dm_clear(DM_KEY_WAYPOINTS_OFFBOARD_1) == OK) {
mavlink_wpm_send_waypoint_ack(_wpm->current_partner_sysid, _wpm->current_partner_compid, MAV_MISSION_ACCEPTED);
} else {
mavlink_wpm_send_waypoint_ack(_wpm->current_partner_sysid, _wpm->current_partner_compid, MAV_MISSION_ERROR);
}
} else {
mavlink_missionlib_send_gcs_string("IGN WP CLEAR CMD: Busy");
if (_verbose) { warnx("IGN WP CLEAR CMD: Busy"); }
}
} else if (wpca.target_system == mavlink_system.sysid /*&& wpca.target_component == mavlink_wpm_comp_id */ && _wpm->current_state != MAVLINK_WPM_STATE_IDLE) {
mavlink_missionlib_send_gcs_string("REJ. WP CLERR CMD: target id mismatch");
if (_verbose) { warnx("IGNORED WAYPOINT CLEAR COMMAND BECAUSE TARGET SYSTEM AND COMPONENT OR COMM PARTNER ID MISMATCH"); }
}
break;
}
default: {
/* other messages might should get caught by mavlink and others */
break;
}
}
}
void
Mavlink::mavlink_missionlib_send_message(mavlink_message_t *msg)
{
uint16_t len = mavlink_msg_to_send_buffer(missionlib_msg_buf, msg);
mavlink_send_uart_bytes(_channel, missionlib_msg_buf, len);
}
int
Mavlink::mavlink_missionlib_send_gcs_string(const char *string)
{
const int len = MAVLINK_MSG_STATUSTEXT_FIELD_TEXT_LEN;
mavlink_statustext_t statustext;
int i = 0;
while (i < len - 1) {
statustext.text[i] = string[i];
if (string[i] == '\0') {
break;
}
i++;
}
if (i > 1) {
/* Enforce null termination */
statustext.text[i] = '\0';
mavlink_message_t msg;
mavlink_msg_statustext_encode(mavlink_system.sysid, mavlink_system.compid, &msg, &statustext);
mavlink_missionlib_send_message(&msg);
return OK;
} else {
return 1;
}
}
MavlinkOrbSubscription *Mavlink::add_orb_subscription(const orb_id_t topic)
{
/* check if already subscribed to this topic */
MavlinkOrbSubscription *sub;
LL_FOREACH(_subscriptions, sub) {
if (sub->get_topic() == topic) {
/* already subscribed */
return sub;
}
}
/* add new subscription */
MavlinkOrbSubscription *sub_new = new MavlinkOrbSubscription(topic);
LL_APPEND(_subscriptions, sub_new);
return sub_new;
}
int
Mavlink::configure_stream(const char *stream_name, const float rate)
{
/* calculate interval in us, 0 means disabled stream */
unsigned int interval = (rate > 0.0f) ? (1000000.0f / rate) : 0;
/* search if stream exists */
MavlinkStream *stream;
LL_FOREACH(_streams, stream) {
if (strcmp(stream_name, stream->get_name()) == 0) {
if (interval > 0) {
/* set new interval */
stream->set_interval(interval);
} else {
/* delete stream */
LL_DELETE(_streams, stream);
delete stream;
}
return OK;
}
}
if (interval > 0) {
/* search for stream with specified name in supported streams list */
for (unsigned int i = 0; streams_list[i] != nullptr; i++) {
if (strcmp(stream_name, streams_list[i]->get_name()) == 0) {
/* create new instance */
stream = streams_list[i]->new_instance();
stream->set_channel(get_channel());
stream->set_interval(interval);
stream->subscribe(this);
LL_APPEND(_streams, stream);
return OK;
}
}
} else {
/* stream not found, nothing to disable */
return OK;
}
return ERROR;
}
void
Mavlink::configure_stream_threadsafe(const char *stream_name, const float rate)
{
/* orb subscription must be done from the main thread,
* set _subscribe_to_stream and _subscribe_to_stream_rate fields
* which polled in mavlink main loop */
if (!_task_should_exit) {
/* wait for previous subscription completion */
while (_subscribe_to_stream != nullptr) {
usleep(MAIN_LOOP_DELAY / 2);
}
/* copy stream name */
unsigned n = strlen(stream_name) + 1;
char *s = new char[n];
memcpy(s, stream_name, n);
/* set subscription task */
_subscribe_to_stream_rate = rate;
_subscribe_to_stream = s;
/* wait for subscription */
do {
usleep(MAIN_LOOP_DELAY / 2);
} while (_subscribe_to_stream != nullptr);
}
}
int
Mavlink::task_main(int argc, char *argv[])
{
/* inform about start */
warnx("start");
fflush(stdout);
/* initialize mavlink text message buffering */
mavlink_logbuffer_init(&_logbuffer, 5);
int ch;
_baudrate = 57600;
_datarate = 0;
_channel = MAVLINK_COMM_0;
_mode = MODE_OFFBOARD;
/* work around some stupidity in task_create's argv handling */
argc -= 2;
argv += 2;
/* don't exit from getopt loop to leave getopt global variables in consistent state,
* set error flag instead */
bool err_flag = false;
while ((ch = getopt(argc, argv, "b:r:d:m:v")) != EOF) {
switch (ch) {
case 'b':
_baudrate = strtoul(optarg, NULL, 10);
if (_baudrate < 9600 || _baudrate > 921600) {
warnx("invalid baud rate '%s'", optarg);
err_flag = true;
}
break;
case 'r':
_datarate = strtoul(optarg, NULL, 10);
if (_datarate < 10 || _datarate > MAX_DATA_RATE) {
warnx("invalid data rate '%s'", optarg);
err_flag = true;
}
break;
case 'd':
_device_name = optarg;
break;
// case 'e':
// mavlink_link_termination_allowed = true;
// break;
case 'm':
if (strcmp(optarg, "offboard") == 0) {
_mode = MODE_OFFBOARD;
} else if (strcmp(optarg, "onboard") == 0) {
_mode = MODE_ONBOARD;
} else if (strcmp(optarg, "hil") == 0) {
_mode = MODE_HIL;
} else if (strcmp(optarg, "custom") == 0) {
_mode = MODE_CUSTOM;
}
break;
case 'v':
_verbose = true;
break;
default:
err_flag = true;
break;
}
}
if (err_flag) {
usage();
exit(1);
}
if (_datarate == 0) {
/* convert bits to bytes and use 1/2 of bandwidth by default */
_datarate = _baudrate / 20;
}
if (_datarate > MAX_DATA_RATE) {
_datarate = MAX_DATA_RATE;
}
if (Mavlink::instance_exists(_device_name, this)) {
errx(1, "mavlink instance for %s already running", _device_name);
}
/* inform about mode */
switch (_mode) {
case MODE_CUSTOM:
warnx("mode: CUSTOM");
break;
case MODE_OFFBOARD:
warnx("mode: OFFBOARD");
break;
case MODE_ONBOARD:
warnx("mode: ONBOARD");
break;
case MODE_HIL:
warnx("mode: HIL");
break;
default:
warnx("ERROR: Unknown mode");
break;
}
switch (_mode) {
case MODE_OFFBOARD:
case MODE_HIL:
case MODE_CUSTOM:
_mavlink_wpm_comp_id = MAV_COMP_ID_MISSIONPLANNER;
break;
case MODE_ONBOARD:
_mavlink_wpm_comp_id = MAV_COMP_ID_CAMERA;
break;
default:
_mavlink_wpm_comp_id = MAV_COMP_ID_ALL;
break;
}
warnx("data rate: %d bytes/s", _datarate);
warnx("port: %s, baudrate: %d", _device_name, _baudrate);
/* flush stdout in case MAVLink is about to take it over */
fflush(stdout);
struct termios uart_config_original;
bool usb_uart;
/* default values for arguments */
_uart_fd = mavlink_open_uart(_baudrate, _device_name, &uart_config_original, &usb_uart);
if (_uart_fd < 0) {
err(1, "could not open %s", _device_name);
}
/* create the device node that's used for sending text log messages, etc. */
register_driver(MAVLINK_LOG_DEVICE, &fops, 0666, NULL);
/* initialize logging device */
_mavlink_fd = open(MAVLINK_LOG_DEVICE, 0);
/* Initialize system properties */
mavlink_update_system();
/* start the MAVLink receiver */
_receive_thread = MavlinkReceiver::receive_start(this);
/* initialize waypoint manager */
mavlink_wpm_init(_wpm);
int mission_result_sub = orb_subscribe(ORB_ID(mission_result));
struct mission_result_s mission_result;
memset(&mission_result, 0, sizeof(mission_result));
_task_running = true;
MavlinkOrbSubscription *param_sub = add_orb_subscription(ORB_ID(parameter_update));
MavlinkOrbSubscription *status_sub = add_orb_subscription(ORB_ID(vehicle_status));
struct vehicle_status_s *status = (struct vehicle_status_s *) status_sub->get_data();
warnx("started");
mavlink_log_info(_mavlink_fd, "[mavlink] started");
/* add default streams depending on mode and intervals depending on datarate */
float rate_mult = _datarate / 1000.0f;
configure_stream("HEARTBEAT", 1.0f);
switch (_mode) {
case MODE_OFFBOARD:
configure_stream("SYS_STATUS", 1.0f);
configure_stream("GPS_GLOBAL_ORIGIN", 0.5f);
configure_stream("HIGHRES_IMU", 1.0f * rate_mult);
configure_stream("ATTITUDE", 10.0f * rate_mult);
configure_stream("GPS_RAW_INT", 1.0f * rate_mult);
configure_stream("GLOBAL_POSITION_INT", 5.0f * rate_mult);
configure_stream("LOCAL_POSITION_NED", 5.0f * rate_mult);
configure_stream("SERVO_OUTPUT_RAW_0", 1.0f * rate_mult);
break;
case MODE_HIL:
/* HIL mode normally runs at high data rate, rate_mult ~ 10 */
configure_stream("SYS_STATUS", 1.0f);
configure_stream("GPS_GLOBAL_ORIGIN", 0.5f);
configure_stream("HIGHRES_IMU", 1.0f * rate_mult);
configure_stream("ATTITUDE", 2.0f * rate_mult);
configure_stream("GPS_RAW_INT", 1.0f * rate_mult);
configure_stream("GLOBAL_POSITION_INT", 1.0f * rate_mult);
configure_stream("LOCAL_POSITION_NED", 1.0f * rate_mult);
configure_stream("HIL_CONTROLS", 15.0f * rate_mult);
break;
default:
break;
}
/* don't send parameters on startup without request */
_mavlink_param_queue_index = param_count();
MavlinkRateLimiter slow_rate_limiter(2000000.0f / rate_mult);
MavlinkRateLimiter fast_rate_limiter(100000.0f / rate_mult);
/* set main loop delay depending on data rate to minimize CPU overhead */
_main_loop_delay = MAIN_LOOP_DELAY / rate_mult;
while (!_task_should_exit) {
/* main loop */
usleep(_main_loop_delay);
perf_begin(_loop_perf);
hrt_abstime t = hrt_absolute_time();
if (param_sub->update(t)) {
/* parameters updated */
mavlink_update_system();
}
if (status_sub->update(t)) {
/* switch HIL mode if required */
if (status->hil_state == HIL_STATE_ON) {
set_hil_enabled(true);
} else if (status->hil_state == HIL_STATE_OFF) {
set_hil_enabled(false);
}
}
/* check for requested subscriptions */
if (_subscribe_to_stream != nullptr) {
if (OK == configure_stream(_subscribe_to_stream, _subscribe_to_stream_rate)) {
if (_subscribe_to_stream_rate > 0.0f) {
warnx("stream %s on device %s enabled with rate %.1f Hz", _subscribe_to_stream, _device_name, _subscribe_to_stream_rate);
} else {
warnx("stream %s on device %s disabled", _subscribe_to_stream, _device_name);
}
} else {
warnx("stream %s not found", _subscribe_to_stream, _device_name);
}
delete _subscribe_to_stream;
_subscribe_to_stream = nullptr;
}
/* update streams */
MavlinkStream *stream;
LL_FOREACH(_streams, stream) {
stream->update(t);
}
bool updated;
orb_check(mission_result_sub, &updated);
if (updated) {
orb_copy(ORB_ID(mission_result), mission_result_sub, &mission_result);
if (_verbose) { warnx("Got mission result: new current: %d", mission_result.index_current_mission); }
if (mission_result.mission_reached) {
mavlink_wpm_send_waypoint_reached((uint16_t)mission_result.mission_index_reached);
}
mavlink_wpm_send_waypoint_current((uint16_t)mission_result.index_current_mission);
} else {
if (slow_rate_limiter.check(t)) {
mavlink_wpm_send_waypoint_current((uint16_t)mission_result.index_current_mission);
}
}
if (fast_rate_limiter.check(t)) {
mavlink_pm_queued_send();
mavlink_waypoint_eventloop(hrt_absolute_time());
if (!mavlink_logbuffer_is_empty(&_logbuffer)) {
struct mavlink_logmessage msg;
int lb_ret = mavlink_logbuffer_read(&_logbuffer, &msg);
if (lb_ret == OK) {
mavlink_missionlib_send_gcs_string(msg.text);
}
}
}
perf_end(_loop_perf);
}
delete _subscribe_to_stream;
_subscribe_to_stream = nullptr;
warnx("waiting for UART receive thread");
/* wait for threads to complete */
pthread_join(_receive_thread, NULL);
/* reset the UART flags to original state */
tcsetattr(_uart_fd, TCSANOW, &uart_config_original);
/* close UART */
close(_uart_fd);
/* destroy log buffer */
mavlink_logbuffer_destroy(&_logbuffer);
warnx("exiting");
_task_running = false;
_exit(0);
}
int Mavlink::start_helper(int argc, char *argv[])
{
/* create the instance in task context */
Mavlink *instance = Mavlink::new_instance();
/* this will actually only return once MAVLink exits */
return instance->task_main(argc, argv);
}
int
Mavlink::start(int argc, char *argv[])
{
// Instantiate thread
char buf[32];
sprintf(buf, "mavlink_if%d", Mavlink::instance_count());
task_spawn_cmd(buf,
SCHED_DEFAULT,
SCHED_PRIORITY_DEFAULT,
2048,
(main_t)&Mavlink::start_helper,
(const char **)argv);
return OK;
}
void
Mavlink::status()
{
warnx("running");
}
int
Mavlink::stream(int argc, char *argv[])
{
const char *device_name = DEFAULT_DEVICE_NAME;
float rate = -1.0f;
const char *stream_name = nullptr;
int ch;
argc -= 1;
argv += 1;
/* don't exit from getopt loop to leave getopt global variables in consistent state,
* set error flag instead */
bool err_flag = false;
while ((ch = getopt(argc, argv, "r:d:s:")) != EOF) {
switch (ch) {
case 'r':
rate = strtod(optarg, nullptr);
if (rate < 0.0f) {
err_flag = true;
}
break;
case 'd':
device_name = optarg;
break;
case 's':
stream_name = optarg;
break;
default:
err_flag = true;
break;
}
}
if (!err_flag && rate >= 0.0 && stream_name != nullptr) {
Mavlink *inst = get_instance_for_device(device_name);
if (inst != nullptr) {
inst->configure_stream_threadsafe(stream_name, rate);
} else {
errx(1, "mavlink for device %s is not running", device_name);
}
} else {
errx(1, "usage: mavlink stream [-d device] -s stream -r rate");
}
return OK;
}
static void usage()
{
errx(1, "usage: mavlink {start|stop-all|stream} [-d device] [-b baudrate] [-r rate] [-m mode] [-s stream] [-v]");
}
int mavlink_main(int argc, char *argv[])
{
if (argc < 2) {
usage();
}
if (!strcmp(argv[1], "start")) {
return Mavlink::start(argc, argv);
} else if (!strcmp(argv[1], "stop")) {
warnx("mavlink stop is deprecated, use stop-all instead");
usage();
} else if (!strcmp(argv[1], "stop-all")) {
return Mavlink::destroy_all_instances();
// } else if (!strcmp(argv[1], "status")) {
// mavlink::g_mavlink->status();
} else if (!strcmp(argv[1], "stream")) {
return Mavlink::stream(argc, argv);
} else {
usage();
}
return 0;
}
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