diff --git a/src/cli.rs b/src/cli.rs index 2be554e..e1469eb 100644 --- a/src/cli.rs +++ b/src/cli.rs @@ -74,6 +74,13 @@ pub fn mavlink_system_and_component_id() -> (u8, u8) { (system_id, component_id) } +pub fn mavlink_send_initial_heartbeats() -> bool { + return MANAGER + .as_ref() + .clap_matches + .is_present("send-initial-heartbeats"); +} + //TODO: Move to the top fn get_clap_matches<'a>() -> clap::ArgMatches<'a> { let version = format!( @@ -144,6 +151,12 @@ fn get_clap_matches<'a>() -> clap::ArgMatches<'a> { .long("verbose") .help("Be verbose") .takes_value(false), + ) + .arg( + clap::Arg::with_name("send-initial-heartbeats") + .long("send-initial-heartbeats") + .help("Send a burst of initial heartbeats to the autopilot spaced by 0.1 seconds to wake up MAVLink connection (useful for PX4-like autopilots).") + .takes_value(false), ); return matches.get_matches(); diff --git a/src/main.rs b/src/main.rs index 13bdfa2..50e5986 100644 --- a/src/main.rs +++ b/src/main.rs @@ -27,6 +27,7 @@ fn main() -> std::io::Result<()> { mavlink_version, system_id, component_id, + cli::mavlink_send_initial_heartbeats(), ); let inner_vehicle = vehicle.mavlink_vehicle.clone(); diff --git a/src/mavlink_vehicle.rs b/src/mavlink_vehicle.rs index bb33dc5..6638d45 100644 --- a/src/mavlink_vehicle.rs +++ b/src/mavlink_vehicle.rs @@ -64,11 +64,27 @@ impl< version: mavlink::MavlinkVersion, system_id: u8, component_id: u8, + send_initial_heartbeats: bool, ) -> Self { let mavlink_vehicle: Arc>> = Arc::new(Mutex::new( MAVLinkVehicle::::new(connection_string, version, system_id, component_id), )); + // PX4 requires a initial heartbeat to be sent to wake up the connection, otherwise it will + // not send any messages + if send_initial_heartbeats { + // From testing, its better to wait a bit before sending the initial heartbeats since + // when sending right away, some heartbeats are lost + std::thread::sleep(std::time::Duration::from_secs(2)); + // Even though one heartbeat is enough, from testing seems like some times the first + // heartbeat is lost, so send a small burst to make sure the connection one go through + // and the connection is woken up + for _ in 0..5 { + send_heartbeat(mavlink_vehicle.clone()); + std::thread::sleep(std::time::Duration::from_millis(100)); + } + } + let heartbeat_mavlink_vehicle = mavlink_vehicle.clone(); let receive_message_mavlink_vehicle = mavlink_vehicle.clone(); @@ -116,18 +132,24 @@ fn receive_message_loop< } } +fn send_heartbeat>( + mavlink_vehicle: Arc>>, +) { + let mavlink_vehicle = mavlink_vehicle.as_ref().lock().unwrap(); + let vehicle = mavlink_vehicle.vehicle.clone(); + let mut header = mavlink_vehicle.header.lock().unwrap(); + if let Err(error) = vehicle.as_ref().send(&header, &heartbeat_message().into()) { + error!("Failed to send heartbeat: {:?}", error); + } + header.sequence = header.sequence.wrapping_add(1); +} + fn heartbeat_loop>( mavlink_vehicle: Arc>>, ) { loop { std::thread::sleep(std::time::Duration::from_secs(1)); - let mavlink_vehicle = mavlink_vehicle.as_ref().lock().unwrap(); - let vehicle = mavlink_vehicle.vehicle.clone(); - let mut header = mavlink_vehicle.header.lock().unwrap(); - if let Err(error) = vehicle.as_ref().send(&header, &heartbeat_message().into()) { - error!("Failed to send heartbeat: {:?}", error); - } - header.sequence = header.sequence.wrapping_add(1); + send_heartbeat(mavlink_vehicle.clone()); } }