diff options
Diffstat (limited to 'src/drivers/airspeed/airspeed.cpp')
| -rw-r--r-- | src/drivers/airspeed/airspeed.cpp | 28 |
1 files changed, 21 insertions, 7 deletions
diff --git a/src/drivers/airspeed/airspeed.cpp b/src/drivers/airspeed/airspeed.cpp index f73a3ef01..771f2128f 100644 --- a/src/drivers/airspeed/airspeed.cpp +++ b/src/drivers/airspeed/airspeed.cpp @@ -1,6 +1,6 @@ /**************************************************************************** * - * Copyright (C) 2013 PX4 Development Team. All rights reserved. + * Copyright (c) 2013, 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 @@ -86,6 +86,7 @@ Airspeed::Airspeed(int bus, int address, unsigned conversion_interval) : _collect_phase(false), _diff_pres_offset(0.0f), _airspeed_pub(-1), + _class_instance(-1), _conversion_interval(conversion_interval), _sample_perf(perf_alloc(PC_ELAPSED, "airspeed_read")), _comms_errors(perf_alloc(PC_COUNT, "airspeed_comms_errors")) @@ -102,6 +103,9 @@ Airspeed::~Airspeed() /* make sure we are truly inactive */ stop(); + if (_class_instance != -1) + unregister_class_devname(AIRSPEED_DEVICE_PATH, _class_instance); + /* free any existing reports */ if (_reports != nullptr) delete _reports; @@ -126,13 +130,23 @@ Airspeed::init() if (_reports == nullptr) goto out; - /* get a publish handle on the airspeed topic */ - differential_pressure_s zero_report; - memset(&zero_report, 0, sizeof(zero_report)); - _airspeed_pub = orb_advertise(ORB_ID(differential_pressure), &zero_report); + /* register alternate interfaces if we have to */ + _class_instance = register_class_devname(AIRSPEED_DEVICE_PATH); + + /* publication init */ + if (_class_instance == CLASS_DEVICE_PRIMARY) { + + /* advertise sensor topic, measure manually to initialize valid report */ + struct differential_pressure_s arp; + measure(); + _reports->get(&arp); - if (_airspeed_pub < 0) - warnx("failed to create airspeed sensor object. Did you start uOrb?"); + /* measurement will have generated a report, publish */ + _airspeed_pub = orb_advertise(ORB_ID(differential_pressure), &arp); + + if (_airspeed_pub < 0) + warnx("failed to create airspeed sensor object. uORB started?"); + } ret = OK; /* sensor is ok, but we don't really know if it is within range */ |