diff options
| -rw-r--r-- | .gitmodules | 3 | ||||
| -rw-r--r-- | Makefile | 3 | ||||
| -rw-r--r-- | ROMFS/px4fmu_common/init.d/4012_quad_x_can | 27 | ||||
| -rw-r--r-- | ROMFS/px4fmu_common/init.d/rc.autostart | 5 | ||||
| -rw-r--r-- | ROMFS/px4fmu_common/init.d/rc.interface | 5 | ||||
| -rw-r--r-- | ROMFS/px4fmu_common/init.d/rcS | 12 | ||||
| -rwxr-xr-x | Tools/check_submodules.sh | 16 | ||||
| -rw-r--r-- | makefiles/config_px4fmu-v2_default.mk | 1 | ||||
| -rw-r--r-- | makefiles/nuttx.mk | 1 | ||||
| -rw-r--r-- | makefiles/setup.mk | 1 | ||||
| -rw-r--r-- | makefiles/toolchain_gnu-arm-eabi.mk | 2 | ||||
| -rw-r--r-- | src/modules/uavcan/.gitignore | 1 | ||||
| -rw-r--r-- | src/modules/uavcan/esc_controller.cpp | 138 | ||||
| -rw-r--r-- | src/modules/uavcan/esc_controller.hpp | 107 | ||||
| -rw-r--r-- | src/modules/uavcan/gnss_receiver.cpp | 153 | ||||
| -rw-r--r-- | src/modules/uavcan/gnss_receiver.hpp | 84 | ||||
| -rw-r--r-- | src/modules/uavcan/module.mk | 74 | ||||
| -rw-r--r-- | src/modules/uavcan/uavcan_clock.cpp | 79 | ||||
| -rw-r--r-- | src/modules/uavcan/uavcan_main.cpp | 582 | ||||
| -rw-r--r-- | src/modules/uavcan/uavcan_main.hpp | 123 | ||||
| m--------- | uavcan | 0 |
21 files changed, 1415 insertions, 2 deletions
diff --git a/.gitmodules b/.gitmodules index 8436b398e..4b84afac2 100644 --- a/.gitmodules +++ b/.gitmodules @@ -4,3 +4,6 @@ [submodule "NuttX"] path = NuttX url = git://github.com/PX4/NuttX.git +[submodule "uavcan"] + path = uavcan + url = git://github.com/pavel-kirienko/uavcan.git @@ -212,6 +212,9 @@ endif $(NUTTX_SRC): $(Q) (./Tools/check_submodules.sh) +$(UAVCAN_DIR): + $(Q) (./Tools/check_submodules.sh) + .PHONY: checksubmodules checksubmodules: $(Q) (./Tools/check_submodules.sh) diff --git a/ROMFS/px4fmu_common/init.d/4012_quad_x_can b/ROMFS/px4fmu_common/init.d/4012_quad_x_can new file mode 100644 index 000000000..8c5a4fbf2 --- /dev/null +++ b/ROMFS/px4fmu_common/init.d/4012_quad_x_can @@ -0,0 +1,27 @@ +#!nsh +# +# F450-sized quadrotor with CAN +# +# Lorenz Meier <lm@inf.ethz.ch> +# + +sh /etc/init.d/4001_quad_x + +if [ $DO_AUTOCONFIG == yes ] +then + # TODO REVIEW + param set MC_ROLL_P 7.0 + param set MC_ROLLRATE_P 0.1 + param set MC_ROLLRATE_I 0.0 + param set MC_ROLLRATE_D 0.003 + param set MC_PITCH_P 7.0 + param set MC_PITCHRATE_P 0.1 + param set MC_PITCHRATE_I 0.0 + param set MC_PITCHRATE_D 0.003 + param set MC_YAW_P 2.8 + param set MC_YAWRATE_P 0.2 + param set MC_YAWRATE_I 0.0 + param set MC_YAWRATE_D 0.0 +fi + +set OUTPUT_MODE uavcan_esc diff --git a/ROMFS/px4fmu_common/init.d/rc.autostart b/ROMFS/px4fmu_common/init.d/rc.autostart index 5d9e9502c..17541e680 100644 --- a/ROMFS/px4fmu_common/init.d/rc.autostart +++ b/ROMFS/px4fmu_common/init.d/rc.autostart @@ -136,6 +136,11 @@ then sh /etc/init.d/4011_dji_f450 fi +if param compare SYS_AUTOSTART 4012 +then + sh /etc/init.d/4012_quad_x_can +fi + if param compare SYS_AUTOSTART 4020 then sh /etc/init.d/4020_hk_micro_pcb diff --git a/ROMFS/px4fmu_common/init.d/rc.interface b/ROMFS/px4fmu_common/init.d/rc.interface index 7f793b219..1de0abb58 100644 --- a/ROMFS/px4fmu_common/init.d/rc.interface +++ b/ROMFS/px4fmu_common/init.d/rc.interface @@ -24,6 +24,11 @@ then else set OUTPUT_DEV /dev/pwm_output fi + + if [ $OUTPUT_MODE == uavcan_esc ] + then + set OUTPUT_DEV /dev/uavcan/esc + fi if mixer load $OUTPUT_DEV $MIXER_FILE then diff --git a/ROMFS/px4fmu_common/init.d/rcS b/ROMFS/px4fmu_common/init.d/rcS index 1c9ded6a8..975cb6d1d 100644 --- a/ROMFS/px4fmu_common/init.d/rcS +++ b/ROMFS/px4fmu_common/init.d/rcS @@ -292,7 +292,17 @@ then # If OUTPUT_MODE == none then something is wrong with setup and we shouldn't try to enable output if [ $OUTPUT_MODE != none ] then - if [ $OUTPUT_MODE == io ] + if [ $OUTPUT_MODE == uavcan_esc ] + then + if uavcan start 1 + then + echo "CAN UP" + else + echo "CAN ERR" + fi + fi + + if [ $OUTPUT_MODE == io -o $OUTPUT_MODE == uavcan_esc ] then echo "[init] Use PX4IO PWM as primary output" if px4io start diff --git a/Tools/check_submodules.sh b/Tools/check_submodules.sh index a56de681f..abe3088c7 100755 --- a/Tools/check_submodules.sh +++ b/Tools/check_submodules.sh @@ -45,4 +45,20 @@ else git submodule update; fi + +if [ -d uavcan/libuavcan_drivers ]; +then + STATUSRETVAL=$(git status --porcelain | grep -i uavcan) + if [ "$STATUSRETVAL" == "" ]; then + echo "Checked uavcan submodule, correct version found" + else + echo "uavcan sub repo not at correct version. Try 'make updatesubmodules'" + echo "or follow instructions on http://pixhawk.org/dev/git/submodules" + exit 1 + fi +else + git submodule init + git submodule update +fi + exit 0 diff --git a/makefiles/config_px4fmu-v2_default.mk b/makefiles/config_px4fmu-v2_default.mk index 8e83df391..fe2a4e9db 100644 --- a/makefiles/config_px4fmu-v2_default.mk +++ b/makefiles/config_px4fmu-v2_default.mk @@ -73,6 +73,7 @@ MODULES += modules/commander MODULES += modules/navigator MODULES += modules/mavlink MODULES += modules/gpio_led +MODULES += modules/uavcan # # Estimation modules (EKF/ SO3 / other filters) diff --git a/makefiles/nuttx.mk b/makefiles/nuttx.mk index d283096b2..bf0744140 100644 --- a/makefiles/nuttx.mk +++ b/makefiles/nuttx.mk @@ -64,6 +64,7 @@ LDSCRIPT += $(NUTTX_EXPORT_DIR)build/ld.script # Add directories from the NuttX export to the relevant search paths # INCLUDE_DIRS += $(NUTTX_EXPORT_DIR)include \ + $(NUTTX_EXPORT_DIR)include/cxx \ $(NUTTX_EXPORT_DIR)arch/chip \ $(NUTTX_EXPORT_DIR)arch/common diff --git a/makefiles/setup.mk b/makefiles/setup.mk index 6a092ef6b..4bfa7a087 100644 --- a/makefiles/setup.mk +++ b/makefiles/setup.mk @@ -49,6 +49,7 @@ export NUTTX_SRC = $(abspath $(PX4_BASE)/NuttX/nuttx)/ export MAVLINK_SRC = $(abspath $(PX4_BASE)/mavlink/include/mavlink/v1.0)/ export NUTTX_APP_SRC = $(abspath $(PX4_BASE)/NuttX/apps)/ export MAVLINK_SRC = $(abspath $(PX4_BASE)/mavlink)/ +export UAVCAN_DIR = $(abspath $(PX4_BASE)/uavcan)/ export ROMFS_SRC = $(abspath $(PX4_BASE)/ROMFS)/ export IMAGE_DIR = $(abspath $(PX4_BASE)/Images)/ export BUILD_DIR = $(abspath $(PX4_BASE)/Build)/ diff --git a/makefiles/toolchain_gnu-arm-eabi.mk b/makefiles/toolchain_gnu-arm-eabi.mk index d8d45d34e..71c7fb49f 100644 --- a/makefiles/toolchain_gnu-arm-eabi.mk +++ b/makefiles/toolchain_gnu-arm-eabi.mk @@ -121,7 +121,7 @@ INSTRUMENTATIONDEFINES = $(ARCHINSTRUMENTATIONDEFINES_$(CONFIG_ARCH)) # Language-specific flags # ARCHCFLAGS = -std=gnu99 -ARCHCXXFLAGS = -fno-exceptions -fno-rtti -std=gnu++0x +ARCHCXXFLAGS = -fno-exceptions -fno-rtti -std=gnu++0x -fno-threadsafe-statics # Generic warnings # diff --git a/src/modules/uavcan/.gitignore b/src/modules/uavcan/.gitignore new file mode 100644 index 000000000..24fbf171f --- /dev/null +++ b/src/modules/uavcan/.gitignore @@ -0,0 +1 @@ +./dsdlc_generated/ diff --git a/src/modules/uavcan/esc_controller.cpp b/src/modules/uavcan/esc_controller.cpp new file mode 100644 index 000000000..406eba88c --- /dev/null +++ b/src/modules/uavcan/esc_controller.cpp @@ -0,0 +1,138 @@ +/**************************************************************************** + * + * 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_controller.cpp + * + * @author Pavel Kirienko <pavel.kirienko@gmail.com> + */ + +#include "esc_controller.hpp" +#include <systemlib/err.h> + +UavcanEscController::UavcanEscController(uavcan::INode &node) : + _node(node), + _uavcan_pub_raw_cmd(node), + _uavcan_sub_status(node), + _orb_timer(node) +{ +} + +UavcanEscController::~UavcanEscController() +{ + perf_free(_perfcnt_invalid_input); + perf_free(_perfcnt_scaling_error); +} + +int UavcanEscController::init() +{ + // ESC status subscription + int res = _uavcan_sub_status.start(StatusCbBinder(this, &UavcanEscController::esc_status_sub_cb)); + if (res < 0) + { + warnx("ESC status sub failed %i", res); + return res; + } + + // ESC status will be relayed from UAVCAN bus into ORB at this rate + _orb_timer.setCallback(TimerCbBinder(this, &UavcanEscController::orb_pub_timer_cb)); + _orb_timer.startPeriodic(uavcan::MonotonicDuration::fromMSec(1000 / ESC_STATUS_UPDATE_RATE_HZ)); + + return res; +} + +void UavcanEscController::update_outputs(float *outputs, unsigned num_outputs) +{ + if ((outputs == nullptr) || (num_outputs > MAX_ESCS)) { + perf_count(_perfcnt_invalid_input); + return; + } + + /* + * Rate limiting - we don't want to congest the bus + */ + const auto timestamp = _node.getMonotonicTime(); + if ((timestamp - _prev_cmd_pub).toUSec() < (1000000 / MAX_RATE_HZ)) { + return; + } + _prev_cmd_pub = timestamp; + + /* + * Fill the command message + * If unarmed, we publish an empty message anyway + */ + uavcan::equipment::esc::RawCommand msg; + + if (_armed) { + for (unsigned i = 0; i < num_outputs; i++) { + + float scaled = (outputs[i] + 1.0F) * 0.5F * uavcan::equipment::esc::RawCommand::CMD_MAX; + if (scaled < 1.0F) { + scaled = 1.0F; // Since we're armed, we don't want to stop it completely + } + + if (scaled < uavcan::equipment::esc::RawCommand::CMD_MIN) { + scaled = uavcan::equipment::esc::RawCommand::CMD_MIN; + perf_count(_perfcnt_scaling_error); + } else if (scaled > uavcan::equipment::esc::RawCommand::CMD_MAX) { + scaled = uavcan::equipment::esc::RawCommand::CMD_MAX; + perf_count(_perfcnt_scaling_error); + } else { + ; // Correct value + } + + msg.cmd.push_back(static_cast<unsigned>(scaled)); + } + } + + /* + * Publish the command message to the bus + * Note that for a quadrotor it takes one CAN frame + */ + (void)_uavcan_pub_raw_cmd.broadcast(msg); +} + +void UavcanEscController::arm_esc(bool arm) +{ + _armed = arm; +} + +void UavcanEscController::esc_status_sub_cb(const uavcan::ReceivedDataStructure<uavcan::equipment::esc::Status> &msg) +{ + // TODO save status into a local storage; publish to ORB later from orb_pub_timer_cb() +} + +void UavcanEscController::orb_pub_timer_cb(const uavcan::TimerEvent&) +{ + // TODO publish to ORB +} diff --git a/src/modules/uavcan/esc_controller.hpp b/src/modules/uavcan/esc_controller.hpp new file mode 100644 index 000000000..559ede561 --- /dev/null +++ b/src/modules/uavcan/esc_controller.hpp @@ -0,0 +1,107 @@ +/**************************************************************************** + * + * 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_controller.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"); +}; diff --git a/src/modules/uavcan/gnss_receiver.cpp b/src/modules/uavcan/gnss_receiver.cpp new file mode 100644 index 000000000..ba1fe5e49 --- /dev/null +++ b/src/modules/uavcan/gnss_receiver.cpp @@ -0,0 +1,153 @@ +/**************************************************************************** + * + * 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 gnss_receiver.cpp + * + * @author Pavel Kirienko <pavel.kirienko@gmail.com> + * @author Andrew Chambers <achamber@gmail.com> + * + */ + +#include "gnss_receiver.hpp" +#include <systemlib/err.h> +#include <mathlib/mathlib.h> + +#define MM_PER_CM 10 // Millimeters per centimeter + +UavcanGnssReceiver::UavcanGnssReceiver(uavcan::INode &node) : +_node(node), +_uavcan_sub_status(node), +_report_pub(-1) +{ +} + +int UavcanGnssReceiver::init() +{ + int res = -1; + + // GNSS fix subscription + res = _uavcan_sub_status.start(FixCbBinder(this, &UavcanGnssReceiver::gnss_fix_sub_cb)); + if (res < 0) + { + warnx("GNSS fix sub failed %i", res); + return res; + } + + // Clear the uORB GPS report + memset(&_report, 0, sizeof(_report)); + + return res; +} + +void UavcanGnssReceiver::gnss_fix_sub_cb(const uavcan::ReceivedDataStructure<uavcan::equipment::gnss::Fix> &msg) +{ + _report.timestamp_position = hrt_absolute_time(); + _report.lat = msg.lat_1e7; + _report.lon = msg.lon_1e7; + _report.alt = msg.alt_1e2 * MM_PER_CM; // Convert from centimeter (1e2) to millimeters (1e3) + + _report.timestamp_variance = _report.timestamp_position; + + + // Check if the msg contains valid covariance information + const bool valid_position_covariance = !msg.position_covariance.empty(); + const bool valid_velocity_covariance = !msg.velocity_covariance.empty(); + + if (valid_position_covariance) { + float pos_cov[9]; + msg.position_covariance.unpackSquareMatrix(pos_cov); + + // Horizontal position uncertainty + const float horizontal_pos_variance = math::max(pos_cov[0], pos_cov[4]); + _report.eph = (horizontal_pos_variance > 0) ? sqrtf(horizontal_pos_variance) : -1.0F; + + // Vertical position uncertainty + _report.epv = (pos_cov[8] > 0) ? sqrtf(pos_cov[8]) : -1.0F; + } else { + _report.eph = -1.0F; + _report.epv = -1.0F; + } + + if (valid_velocity_covariance) { + float vel_cov[9]; + msg.velocity_covariance.unpackSquareMatrix(vel_cov); + _report.s_variance_m_s = math::max(math::max(vel_cov[0], vel_cov[4]), vel_cov[8]); + + /* There is a nonlinear relationship between the velocity vector and the heading. + * Use Jacobian to transform velocity covariance to heading covariance + * + * Nonlinear equation: + * heading = atan2(vel_e_m_s, vel_n_m_s) + * For math, see http://en.wikipedia.org/wiki/Atan2#Derivative + * + * To calculate the variance of heading from the variance of velocity, + * cov(heading) = J(velocity)*cov(velocity)*J(velocity)^T + */ + float vel_n = msg.ned_velocity[0]; + float vel_e = msg.ned_velocity[1]; + float vel_n_sq = vel_n * vel_n; + float vel_e_sq = vel_e * vel_e; + _report.c_variance_rad = + (vel_e_sq * vel_cov[0] + + -2 * vel_n * vel_e * vel_cov[1] + // Covariance matrix is symmetric + vel_n_sq* vel_cov[4]) / ((vel_n_sq + vel_e_sq) * (vel_n_sq + vel_e_sq)); + + } else { + _report.s_variance_m_s = -1.0F; + _report.c_variance_rad = -1.0F; + } + + _report.fix_type = msg.status; + + _report.timestamp_velocity = _report.timestamp_position; + _report.vel_n_m_s = msg.ned_velocity[0]; + _report.vel_e_m_s = msg.ned_velocity[1]; + _report.vel_d_m_s = msg.ned_velocity[2]; + _report.vel_m_s = sqrtf(_report.vel_n_m_s * _report.vel_n_m_s + _report.vel_e_m_s * _report.vel_e_m_s + _report.vel_d_m_s * _report.vel_d_m_s); + _report.cog_rad = atan2f(_report.vel_e_m_s, _report.vel_n_m_s); + _report.vel_ned_valid = true; + + _report.timestamp_time = _report.timestamp_position; + _report.time_gps_usec = uavcan::UtcTime(msg.gnss_timestamp).toUSec(); // Convert to microseconds + + _report.satellites_used = msg.sats_used; + + if (_report_pub > 0) { + orb_publish(ORB_ID(vehicle_gps_position), _report_pub, &_report); + + } else { + _report_pub = orb_advertise(ORB_ID(vehicle_gps_position), &_report); + } + +} diff --git a/src/modules/uavcan/gnss_receiver.hpp b/src/modules/uavcan/gnss_receiver.hpp new file mode 100644 index 000000000..18df8da2f --- /dev/null +++ b/src/modules/uavcan/gnss_receiver.hpp @@ -0,0 +1,84 @@ +/**************************************************************************** + * + * 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 gnss_receiver.hpp + * + * UAVCAN --> ORB bridge for GNSS messages: + * uavcan.equipment.gnss.Fix + * + * @author Pavel Kirienko <pavel.kirienko@gmail.com> + * @author Andrew Chambers <achamber@gmail.com> + */ + +#pragma once + +#include <drivers/drv_hrt.h> + +#include <uORB/uORB.h> +#include <uORB/topics/vehicle_gps_position.h> + +#include <uavcan/uavcan.hpp> +#include <uavcan/equipment/gnss/Fix.hpp> + +class UavcanGnssReceiver +{ +public: + UavcanGnssReceiver(uavcan::INode& node); + + int init(); + +private: + /** + * GNSS fix message will be reported via this callback. + */ + void gnss_fix_sub_cb(const uavcan::ReceivedDataStructure<uavcan::equipment::gnss::Fix> &msg); + + + typedef uavcan::MethodBinder<UavcanGnssReceiver*, + void (UavcanGnssReceiver::*)(const uavcan::ReceivedDataStructure<uavcan::equipment::gnss::Fix>&)> + FixCbBinder; + + /* + * libuavcan related things + */ + uavcan::INode &_node; + uavcan::Subscriber<uavcan::equipment::gnss::Fix, FixCbBinder> _uavcan_sub_status; + + /* + * uORB + */ + struct vehicle_gps_position_s _report; ///< uORB topic for gnss position + orb_advert_t _report_pub; ///< uORB pub for gnss position + +}; diff --git a/src/modules/uavcan/module.mk b/src/modules/uavcan/module.mk new file mode 100644 index 000000000..1ef6f0cfa --- /dev/null +++ b/src/modules/uavcan/module.mk @@ -0,0 +1,74 @@ +############################################################################ +# +# Copyright (C) 2013 PX4 Development Team. All rights reserved. +# Author: Pavel Kirienko <pavel.kirienko@gmail.com> +# +# 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. +# +############################################################################ + +# +# UAVCAN <--> uORB bridge +# + +MODULE_COMMAND = uavcan + +MAXOPTIMIZATION = -Os + +SRCS += uavcan_main.cpp \ + uavcan_clock.cpp \ + esc_controller.cpp \ + gnss_receiver.cpp + +# +# libuavcan +# +include $(UAVCAN_DIR)/libuavcan/include.mk +SRCS += $(LIBUAVCAN_SRC) +INCLUDE_DIRS += $(LIBUAVCAN_INC) +# Since actual compiler mode is C++11, the library will default to UAVCAN_CPP11, but it will fail to compile +# because this platform lacks most of the standard library and STL. Hence we need to force C++03 mode. +override EXTRADEFINES := $(EXTRADEFINES) -DUAVCAN_CPP_VERSION=UAVCAN_CPP03 -DUAVCAN_NO_ASSERTIONS + +# +# libuavcan drivers for STM32 +# +include $(UAVCAN_DIR)/libuavcan_drivers/stm32/driver/include.mk +SRCS += $(LIBUAVCAN_STM32_SRC) +INCLUDE_DIRS += $(LIBUAVCAN_STM32_INC) +override EXTRADEFINES := $(EXTRADEFINES) -DUAVCAN_STM32_NUTTX -DUAVCAN_STM32_NUM_IFACES=2 + +# +# Invoke DSDL compiler +# TODO: Add make target for this, or invoke dsdlc manually. +# The second option assumes that the generated headers shall be saved +# under the version control, which may be undesirable. +# The first option requires any Python and the Python Mako library for the sources to be built. +# +$(info $(shell $(LIBUAVCAN_DSDLC) $(UAVCAN_DSDL_DIR))) +INCLUDE_DIRS += dsdlc_generated diff --git a/src/modules/uavcan/uavcan_clock.cpp b/src/modules/uavcan/uavcan_clock.cpp new file mode 100644 index 000000000..e41d5f953 --- /dev/null +++ b/src/modules/uavcan/uavcan_clock.cpp @@ -0,0 +1,79 @@ +/**************************************************************************** + * + * 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. + * + ****************************************************************************/ + +#include <uavcan_stm32/uavcan_stm32.hpp> +#include <drivers/drv_hrt.h> + +/** + * @file uavcan_clock.cpp + * + * Implements a clock for the CAN node. + * + * @author Pavel Kirienko <pavel.kirienko@gmail.com> + */ + +namespace uavcan_stm32 +{ +namespace clock +{ + +uavcan::MonotonicTime getMonotonic() +{ + return uavcan::MonotonicTime::fromUSec(hrt_absolute_time()); +} + +uavcan::UtcTime getUtc() +{ + return uavcan::UtcTime(); +} + +void adjustUtc(uavcan::UtcDuration adjustment) +{ + (void)adjustment; +} + +uavcan::uint64_t getUtcUSecFromCanInterrupt() +{ + return 0; +} + +} // namespace clock + +SystemClock &SystemClock::instance() +{ + static SystemClock inst; + return inst; +} + +} + diff --git a/src/modules/uavcan/uavcan_main.cpp b/src/modules/uavcan/uavcan_main.cpp new file mode 100644 index 000000000..27e77e9c5 --- /dev/null +++ b/src/modules/uavcan/uavcan_main.cpp @@ -0,0 +1,582 @@ +/**************************************************************************** + * + * 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. + * + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <cstdlib> +#include <cstring> +#include <fcntl.h> +#include <systemlib/err.h> +#include <systemlib/systemlib.h> +#include <systemlib/mixer/mixer.h> +#include <arch/board/board.h> +#include <arch/chip/chip.h> + +#include <drivers/drv_hrt.h> +#include <drivers/drv_pwm_output.h> + +#include "uavcan_main.hpp" + +/** + * @file uavcan_main.cpp + * + * Implements basic functinality of UAVCAN node. + * + * @author Pavel Kirienko <pavel.kirienko@gmail.com> + */ + +/* + * UavcanNode + */ +UavcanNode *UavcanNode::_instance; + +UavcanNode::UavcanNode(uavcan::ICanDriver &can_driver, uavcan::ISystemClock &system_clock) : + CDev("uavcan", UAVCAN_DEVICE_PATH), + _node(can_driver, system_clock), + _esc_controller(_node), + _gnss_receiver(_node) +{ + _control_topics[0] = ORB_ID(actuator_controls_0); + _control_topics[1] = ORB_ID(actuator_controls_1); + _control_topics[2] = ORB_ID(actuator_controls_2); + _control_topics[3] = ORB_ID(actuator_controls_3); + + // memset(_controls, 0, sizeof(_controls)); + // memset(_poll_fds, 0, sizeof(_poll_fds)); +} + +UavcanNode::~UavcanNode() +{ + if (_task != -1) { + /* tell the task we want it to go away */ + _task_should_exit = true; + + unsigned i = 10; + + do { + /* wait 5ms - it should wake every 10ms or so worst-case */ + usleep(5000); + + /* if we have given up, kill it */ + if (--i == 0) { + task_delete(_task); + break; + } + + } while (_task != -1); + } + + /* clean up the alternate device node */ + // unregister_driver(PWM_OUTPUT_DEVICE_PATH); + + ::close(_armed_sub); + + _instance = nullptr; +} + +int UavcanNode::start(uavcan::NodeID node_id, uint32_t bitrate) +{ + if (_instance != nullptr) { + warnx("Already started"); + return -1; + } + + /* + * GPIO config. + * Forced pull up on CAN2 is required for Pixhawk v1 where the second interface lacks a transceiver. + * If no transceiver is connected, the RX pin will float, occasionally causing CAN controller to + * fail during initialization. + */ + stm32_configgpio(GPIO_CAN1_RX); + stm32_configgpio(GPIO_CAN1_TX); + stm32_configgpio(GPIO_CAN2_RX | GPIO_PULLUP); + stm32_configgpio(GPIO_CAN2_TX); + + /* + * CAN driver init + */ + static CanInitHelper can; + static bool can_initialized = false; + + if (!can_initialized) { + const int can_init_res = can.init(bitrate); + + if (can_init_res < 0) { + warnx("CAN driver init failed %i", can_init_res); + return can_init_res; + } + + can_initialized = true; + } + + /* + * Node init + */ + _instance = new UavcanNode(can.driver, uavcan_stm32::SystemClock::instance()); + + if (_instance == nullptr) { + warnx("Out of memory"); + return -1; + } + + const int node_init_res = _instance->init(node_id); + + if (node_init_res < 0) { + delete _instance; + _instance = nullptr; + warnx("Node init failed %i", node_init_res); + return node_init_res; + } + + /* + * Start the task. Normally it should never exit. + */ + static auto run_trampoline = [](int, char *[]) {return UavcanNode::_instance->run();}; + _instance->_task = task_spawn_cmd("uavcan", SCHED_DEFAULT, SCHED_PRIORITY_DEFAULT, StackSize, + static_cast<main_t>(run_trampoline), nullptr); + + if (_instance->_task < 0) { + warnx("start failed: %d", errno); + return -errno; + } + + return OK; +} + +int UavcanNode::init(uavcan::NodeID node_id) +{ + int ret = -1; + + /* do regular cdev init */ + ret = CDev::init(); + + if (ret != OK) + return ret; + + ret = _esc_controller.init(); + if (ret < 0) + return ret; + + ret = _gnss_receiver.init(); + if (ret < 0) + return ret; + + uavcan::protocol::SoftwareVersion swver; + swver.major = 12; // TODO fill version info + swver.minor = 34; + _node.setSoftwareVersion(swver); + + uavcan::protocol::HardwareVersion hwver; + hwver.major = 42; // TODO fill version info + hwver.minor = 42; + _node.setHardwareVersion(hwver); + + _node.setName("org.pixhawk"); // Huh? + + _node.setNodeID(node_id); + + return _node.start(); +} + +void UavcanNode::node_spin_once() +{ + const int spin_res = _node.spin(uavcan::MonotonicTime()); + if (spin_res < 0) { + warnx("node spin error %i", spin_res); + } +} + +int UavcanNode::run() +{ + const unsigned PollTimeoutMs = 50; + + // XXX figure out the output count + _output_count = 2; + + + _armed_sub = orb_subscribe(ORB_ID(actuator_armed)); + + actuator_outputs_s outputs; + memset(&outputs, 0, sizeof(outputs)); + + const int busevent_fd = ::open(uavcan_stm32::BusEvent::DevName, 0); + if (busevent_fd < 0) + { + warnx("Failed to open %s", uavcan_stm32::BusEvent::DevName); + _task_should_exit = true; + } + + /* + * XXX Mixing logic/subscriptions shall be moved into UavcanEscController::update(); + * IO multiplexing shall be done here. + */ + + _node.setStatusOk(); + + while (!_task_should_exit) { + + if (_groups_subscribed != _groups_required) { + subscribe(); + _groups_subscribed = _groups_required; + /* + * This event is needed to wake up the thread on CAN bus activity (RX/TX/Error). + * Please note that with such multiplexing it is no longer possible to rely only on + * the value returned from poll() to detect whether actuator control has timed out or not. + * Instead, all ORB events need to be checked individually (see below). + */ + _poll_fds[_poll_fds_num] = ::pollfd(); + _poll_fds[_poll_fds_num].fd = busevent_fd; + _poll_fds[_poll_fds_num].events = POLLIN; + _poll_fds_num += 1; + } + + const int poll_ret = ::poll(_poll_fds, _poll_fds_num, PollTimeoutMs); + + node_spin_once(); // Non-blocking + + // this would be bad... + if (poll_ret < 0) { + log("poll error %d", errno); + continue; + } else { + // get controls for required topics + bool controls_updated = false; + unsigned poll_id = 0; + for (unsigned i = 0; i < NUM_ACTUATOR_CONTROL_GROUPS; i++) { + if (_control_subs[i] > 0) { + if (_poll_fds[poll_id].revents & POLLIN) { + controls_updated = true; + orb_copy(_control_topics[i], _control_subs[i], &_controls[i]); + } + poll_id++; + } + } + + if (!controls_updated) { + // timeout: no control data, switch to failsafe values + // XXX trigger failsafe + } + + //can we mix? + if (controls_updated && (_mixers != nullptr)) { + + // XXX one output group has 8 outputs max, + // but this driver could well serve multiple groups. + unsigned num_outputs_max = 8; + + // Do mixing + outputs.noutputs = _mixers->mix(&outputs.output[0], num_outputs_max); + outputs.timestamp = hrt_absolute_time(); + + // iterate actuators + for (unsigned i = 0; i < outputs.noutputs; i++) { + // last resort: catch NaN, INF and out-of-band errors + if (!isfinite(outputs.output[i])) { + /* + * Value is NaN, INF or out of band - set to the minimum value. + * This will be clearly visible on the servo status and will limit the risk of accidentally + * spinning motors. It would be deadly in flight. + */ + outputs.output[i] = -1.0f; + } + + // limit outputs to valid range + + // never go below min + if (outputs.output[i] < -1.0f) { + outputs.output[i] = -1.0f; + } + + // never go below max + if (outputs.output[i] > 1.0f) { + outputs.output[i] = 1.0f; + } + } + + // Output to the bus + _esc_controller.update_outputs(outputs.output, outputs.noutputs); + } + + } + + // Check arming state + bool updated = false; + orb_check(_armed_sub, &updated); + + if (updated) { + orb_copy(ORB_ID(actuator_armed), _armed_sub, &_armed); + + // Update the armed status and check that we're not locked down + bool set_armed = _armed.armed && !_armed.lockdown; + + arm_actuators(set_armed); + } + } + + teardown(); + warnx("exiting."); + + exit(0); +} + +int +UavcanNode::control_callback(uintptr_t handle, + uint8_t control_group, + uint8_t control_index, + float &input) +{ + const actuator_controls_s *controls = (actuator_controls_s *)handle; + + input = controls[control_group].control[control_index]; + return 0; +} + +int +UavcanNode::teardown() +{ + for (unsigned i = 0; i < NUM_ACTUATOR_CONTROL_GROUPS; i++) { + if (_control_subs[i] > 0) { + ::close(_control_subs[i]); + _control_subs[i] = -1; + } + } + return ::close(_armed_sub); +} + +int +UavcanNode::arm_actuators(bool arm) +{ + _is_armed = arm; + _esc_controller.arm_esc(arm); + return OK; +} + +void +UavcanNode::subscribe() +{ + // Subscribe/unsubscribe to required actuator control groups + uint32_t sub_groups = _groups_required & ~_groups_subscribed; + uint32_t unsub_groups = _groups_subscribed & ~_groups_required; + _poll_fds_num = 0; + for (unsigned i = 0; i < NUM_ACTUATOR_CONTROL_GROUPS; i++) { + if (sub_groups & (1 << i)) { + warnx("subscribe to actuator_controls_%d", i); + _control_subs[i] = orb_subscribe(_control_topics[i]); + } + if (unsub_groups & (1 << i)) { + warnx("unsubscribe from actuator_controls_%d", i); + ::close(_control_subs[i]); + _control_subs[i] = -1; + } + + if (_control_subs[i] > 0) { + _poll_fds[_poll_fds_num].fd = _control_subs[i]; + _poll_fds[_poll_fds_num].events = POLLIN; + _poll_fds_num++; + } + } +} + +int +UavcanNode::ioctl(file *filp, int cmd, unsigned long arg) +{ + int ret = OK; + + lock(); + + switch (cmd) { + case PWM_SERVO_ARM: + arm_actuators(true); + break; + + case PWM_SERVO_SET_ARM_OK: + case PWM_SERVO_CLEAR_ARM_OK: + case PWM_SERVO_SET_FORCE_SAFETY_OFF: + // these are no-ops, as no safety switch + break; + + case PWM_SERVO_DISARM: + arm_actuators(false); + break; + + case MIXERIOCGETOUTPUTCOUNT: + *(unsigned *)arg = _output_count; + break; + + case MIXERIOCRESET: + if (_mixers != nullptr) { + delete _mixers; + _mixers = nullptr; + _groups_required = 0; + } + + break; + + case MIXERIOCLOADBUF: { + const char *buf = (const char *)arg; + unsigned buflen = strnlen(buf, 1024); + + if (_mixers == nullptr) + _mixers = new MixerGroup(control_callback, (uintptr_t)_controls); + + if (_mixers == nullptr) { + _groups_required = 0; + ret = -ENOMEM; + + } else { + + ret = _mixers->load_from_buf(buf, buflen); + + if (ret != 0) { + warnx("mixer load failed with %d", ret); + delete _mixers; + _mixers = nullptr; + _groups_required = 0; + ret = -EINVAL; + } else { + + _mixers->groups_required(_groups_required); + } + } + + break; + } + + default: + ret = -ENOTTY; + break; + } + + unlock(); + + if (ret == -ENOTTY) { + ret = CDev::ioctl(filp, cmd, arg); + } + + return ret; +} + +void +UavcanNode::print_info() +{ + if (!_instance) { + warnx("not running, start first"); + } + + warnx("groups: sub: %u / req: %u / fds: %u", (unsigned)_groups_subscribed, (unsigned)_groups_required, _poll_fds_num); + warnx("mixer: %s", (_mixers == nullptr) ? "FAIL" : "OK"); +} + +/* + * App entry point + */ +static void print_usage() +{ + warnx("usage: uavcan start <node_id> [can_bitrate]"); +} + +extern "C" __EXPORT int uavcan_main(int argc, char *argv[]); + +int uavcan_main(int argc, char *argv[]) +{ + constexpr unsigned DEFAULT_CAN_BITRATE = 1000000; + + if (argc < 2) { + print_usage(); + ::exit(1); + } + + if (!std::strcmp(argv[1], "start")) { + if (argc < 3) { + print_usage(); + ::exit(1); + } + + /* + * Node ID + */ + const int node_id = atoi(argv[2]); + + if (node_id < 0 || node_id > uavcan::NodeID::Max || !uavcan::NodeID(node_id).isUnicast()) { + warnx("Invalid Node ID %i", node_id); + ::exit(1); + } + + /* + * CAN bitrate + */ + unsigned bitrate = 0; + + if (argc > 3) { + bitrate = atol(argv[3]); + } + + if (bitrate <= 0) { + bitrate = DEFAULT_CAN_BITRATE; + } + + if (UavcanNode::instance()) { + errx(1, "already started"); + } + + /* + * Start + */ + warnx("Node ID %u, bitrate %u", node_id, bitrate); + return UavcanNode::start(node_id, bitrate); + + } + + /* commands below require the app to be started */ + UavcanNode *inst = UavcanNode::instance(); + + if (!inst) { + errx(1, "application not running"); + } + + if (!std::strcmp(argv[1], "status") || !std::strcmp(argv[1], "info")) { + + inst->print_info(); + return OK; + } + + if (!std::strcmp(argv[1], "stop")) { + + delete inst; + inst = nullptr; + return OK; + } + + print_usage(); + ::exit(1); +} diff --git a/src/modules/uavcan/uavcan_main.hpp b/src/modules/uavcan/uavcan_main.hpp new file mode 100644 index 000000000..443525379 --- /dev/null +++ b/src/modules/uavcan/uavcan_main.hpp @@ -0,0 +1,123 @@ +/**************************************************************************** + * + * 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. + * + ****************************************************************************/ + +#pragma once + +#include <nuttx/config.h> + +#include <uavcan_stm32/uavcan_stm32.hpp> +#include <drivers/device/device.h> + +#include <uORB/topics/actuator_controls.h> +#include <uORB/topics/actuator_outputs.h> +#include <uORB/topics/actuator_armed.h> + +#include "esc_controller.hpp" +#include "gnss_receiver.hpp" + +/** + * @file uavcan_main.hpp + * + * Defines basic functinality of UAVCAN node. + * + * @author Pavel Kirienko <pavel.kirienko@gmail.com> + */ + +#define NUM_ACTUATOR_CONTROL_GROUPS_UAVCAN 4 +#define UAVCAN_DEVICE_PATH "/dev/uavcan/esc" + +/** + * A UAVCAN node. + */ +class UavcanNode : public device::CDev +{ + static constexpr unsigned MemPoolSize = 10752; + static constexpr unsigned RxQueueLenPerIface = 64; + static constexpr unsigned StackSize = 3000; + +public: + typedef uavcan::Node<MemPoolSize> Node; + typedef uavcan_stm32::CanInitHelper<RxQueueLenPerIface> CanInitHelper; + + UavcanNode(uavcan::ICanDriver &can_driver, uavcan::ISystemClock &system_clock); + + virtual ~UavcanNode(); + + virtual int ioctl(file *filp, int cmd, unsigned long arg); + + static int start(uavcan::NodeID node_id, uint32_t bitrate); + + Node& getNode() { return _node; } + + static int control_callback(uintptr_t handle, + uint8_t control_group, + uint8_t control_index, + float &input); + + void subscribe(); + + int teardown(); + int arm_actuators(bool arm); + + void print_info(); + + static UavcanNode* instance() { return _instance; } + +private: + int init(uavcan::NodeID node_id); + void node_spin_once(); + int run(); + + int _task = -1; ///< handle to the OS task + bool _task_should_exit = false; ///< flag to indicate to tear down the CAN driver + int _armed_sub = -1; ///< uORB subscription of the arming status + actuator_armed_s _armed; ///< the arming request of the system + bool _is_armed = false; ///< the arming status of the actuators on the bus + + unsigned _output_count = 0; ///< number of actuators currently available + + static UavcanNode *_instance; ///< singleton pointer + Node _node; ///< library instance + UavcanEscController _esc_controller; + UavcanGnssReceiver _gnss_receiver; + + MixerGroup *_mixers = nullptr; + + uint32_t _groups_required = 0; + uint32_t _groups_subscribed = 0; + int _control_subs[NUM_ACTUATOR_CONTROL_GROUPS_UAVCAN] = {}; + actuator_controls_s _controls[NUM_ACTUATOR_CONTROL_GROUPS_UAVCAN] = {}; + orb_id_t _control_topics[NUM_ACTUATOR_CONTROL_GROUPS_UAVCAN] = {}; + pollfd _poll_fds[NUM_ACTUATOR_CONTROL_GROUPS_UAVCAN + 1] = {}; ///< +1 for /dev/uavcan/busevent + unsigned _poll_fds_num = 0; +}; diff --git a/uavcan b/uavcan new file mode 160000 +Subproject af065e9ca9e3ba9100c125d3ab739313d0500ca |