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+/****************************************************************************
+ *
+ * Copyright (C) 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 esc.hpp
+ *
+ * UAVCAN <--> ORB bridge for ESC messages:
+ * uavcan.equipment.esc.RawCommand
+ * uavcan.equipment.esc.RPMCommand
+ * uavcan.equipment.esc.Status
+ *
+ * @author Pavel Kirienko <pavel.kirienko@gmail.com>
+ */
+
+#pragma once
+
+#include <uavcan/uavcan.hpp>
+#include <uavcan/equipment/esc/RawCommand.hpp>
+#include <uavcan/equipment/esc/Status.hpp>
+#include <systemlib/perf_counter.h>
+
+class UavcanEscController
+{
+public:
+ UavcanEscController(uavcan::INode& node);
+ ~UavcanEscController();
+
+ int init();
+
+ void update_outputs(float *outputs, unsigned num_outputs);
+
+ void arm_esc(bool arm);
+
+private:
+ /**
+ * ESC status message reception will be reported via this callback.
+ */
+ void esc_status_sub_cb(const uavcan::ReceivedDataStructure<uavcan::equipment::esc::Status> &msg);
+
+ /**
+ * ESC status will be published to ORB from this callback (fixed rate).
+ */
+ void orb_pub_timer_cb(const uavcan::TimerEvent &event);
+
+
+ static constexpr unsigned MAX_RATE_HZ = 100; ///< XXX make this configurable
+ static constexpr unsigned ESC_STATUS_UPDATE_RATE_HZ = 5;
+ static constexpr unsigned MAX_ESCS = uavcan::equipment::esc::RawCommand::FieldTypes::cmd::MaxSize;
+
+ typedef uavcan::MethodBinder<UavcanEscController*,
+ void (UavcanEscController::*)(const uavcan::ReceivedDataStructure<uavcan::equipment::esc::Status>&)>
+ StatusCbBinder;
+
+ typedef uavcan::MethodBinder<UavcanEscController*, void (UavcanEscController::*)(const uavcan::TimerEvent&)>
+ TimerCbBinder;
+
+ /*
+ * libuavcan related things
+ */
+ uavcan::MonotonicTime _prev_cmd_pub; ///< rate limiting
+ uavcan::INode &_node;
+ uavcan::Publisher<uavcan::equipment::esc::RawCommand> _uavcan_pub_raw_cmd;
+ uavcan::Subscriber<uavcan::equipment::esc::Status, StatusCbBinder> _uavcan_sub_status;
+ uavcan::TimerEventForwarder<TimerCbBinder> _orb_timer;
+
+ /*
+ * ESC states
+ */
+ bool _armed = false;
+ uavcan::equipment::esc::Status _states[MAX_ESCS];
+
+ /*
+ * Perf counters
+ */
+ perf_counter_t _perfcnt_invalid_input = perf_alloc(PC_COUNT, "uavcan_esc_invalid_input");
+ perf_counter_t _perfcnt_scaling_error = perf_alloc(PC_COUNT, "uavcan_esc_scaling_error");
+};