From c3522f85928c16d55e54dedc73eb4ed1420d527f Mon Sep 17 00:00:00 2001 From: Lorenz Meier Date: Sun, 17 Aug 2014 10:58:28 +0200 Subject: Publish telemetry status on telemetry update and on heartbeat update events to avoid inducing heartbeat update latencies resulting in spurious telemetry link dropped detections. Makes overall state handling simpler --- src/modules/mavlink/mavlink_main.cpp | 2 ++ src/modules/mavlink/mavlink_receiver.cpp | 30 +++++++++--------------------- src/modules/mavlink/mavlink_receiver.h | 1 - 3 files changed, 11 insertions(+), 22 deletions(-) (limited to 'src/modules/mavlink') diff --git a/src/modules/mavlink/mavlink_main.cpp b/src/modules/mavlink/mavlink_main.cpp index 2faf8ab76..c27716f74 100644 --- a/src/modules/mavlink/mavlink_main.cpp +++ b/src/modules/mavlink/mavlink_main.cpp @@ -217,6 +217,8 @@ Mavlink::Mavlink() : errx(1, "instance ID is out of range"); break; } + + _rstatus.type = TELEMETRY_STATUS_RADIO_TYPE_GENERIC; } Mavlink::~Mavlink() diff --git a/src/modules/mavlink/mavlink_receiver.cpp b/src/modules/mavlink/mavlink_receiver.cpp index c0fae0a2f..e9a9ff133 100644 --- a/src/modules/mavlink/mavlink_receiver.cpp +++ b/src/modules/mavlink/mavlink_receiver.cpp @@ -112,7 +112,6 @@ MavlinkReceiver::MavlinkReceiver(Mavlink *parent) : _telemetry_status_pub(-1), _rc_pub(-1), _manual_pub(-1), - _radio_status_available(false), _control_mode_sub(orb_subscribe(ORB_ID(vehicle_control_mode))), _hil_frames(0), _old_timestamp(0), @@ -430,9 +429,6 @@ MavlinkReceiver::handle_message_radio_status(mavlink_message_t *msg) } else { orb_publish(telemetry_status_orb_id[_mavlink->get_channel()], _telemetry_status_pub, &tstatus); } - - /* this means that heartbeats alone won't be published to the radio status no more */ - _radio_status_available = true; } } @@ -474,25 +470,17 @@ MavlinkReceiver::handle_message_heartbeat(mavlink_message_t *msg) struct telemetry_status_s &tstatus = _mavlink->get_rx_status(); - hrt_abstime tnow = hrt_absolute_time(); - - /* always set heartbeat, publish only if telemetry link not up */ - tstatus.heartbeat_time = tnow; - - /* if no radio status messages arrive, lets at least publish that heartbeats were received */ - if (!_radio_status_available) { + /* set heartbeat time and topic time and publish - + * the telem status also gets updated on telemetry events + */ + tstatus.timestamp = hrt_absolute_time(); + tstatus.heartbeat_time = tstatus.timestamp; - tstatus.timestamp = tnow; - /* telem_time indicates the timestamp of a telemetry status packet and we got none */ - tstatus.telem_time = 0; - tstatus.type = TELEMETRY_STATUS_RADIO_TYPE_GENERIC; + if (_telemetry_status_pub < 0) { + _telemetry_status_pub = orb_advertise(telemetry_status_orb_id[_mavlink->get_channel()], &tstatus); - if (_telemetry_status_pub < 0) { - _telemetry_status_pub = orb_advertise(telemetry_status_orb_id[_mavlink->get_channel()], &tstatus); - - } else { - orb_publish(telemetry_status_orb_id[_mavlink->get_channel()], _telemetry_status_pub, &tstatus); - } + } else { + orb_publish(telemetry_status_orb_id[_mavlink->get_channel()], _telemetry_status_pub, &tstatus); } } } diff --git a/src/modules/mavlink/mavlink_receiver.h b/src/modules/mavlink/mavlink_receiver.h index 014193100..3999b8b01 100644 --- a/src/modules/mavlink/mavlink_receiver.h +++ b/src/modules/mavlink/mavlink_receiver.h @@ -151,7 +151,6 @@ private: orb_advert_t _telemetry_status_pub; orb_advert_t _rc_pub; orb_advert_t _manual_pub; - bool _radio_status_available; int _control_mode_sub; int _hil_frames; uint64_t _old_timestamp; -- cgit v1.2.3