Linux-world-2012-January->2

最新推荐文章于 2020-04-20 17:19:46 发布
原创 最新推荐文章于 2020-04-20 17:19:46 发布 · 191 阅读 · 0 ·
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博客提及利用PWM和LED实现不同音调，涉及信息技术中信号控制与输出相关内容。
PWM+LED 不同音调
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Asterinas是一项基于Rust语言的创新操作系统内核项目，采用"框架内核"（framekernel）架构，巧妙融合单体内核的高效性与微内核的安全性优势。该项目将所有需要使用Rust不安全特性的代码封装在核心库中，其余内核服务则采用安全抽象开发，既保持了共享内存架构的性能优势，又显著提升了系统安全性。Asterinas兼容Linux ABI，支持x86和RISC-V架构，目前已完成206个系统调用实现。项目由中国多所高校研究人员和蚂蚁集团共同推进，近期目标聚焦云计算领域，计划构建具备
C语言时间库操作--＞协调时转本地时
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C语言时间库操作-->协调时转本地时
tzb@tzb:~/PX4_Firmware$ make px4_sitl_default gazebo -- PX4 version: v1.11.0-beta1 -- PX4 config file: /home/tzb/PX4_Firmware/boards/px4/sitl/default.cmake -- PX4 config: px4_sitl_default -- PX4 platform: posix -- PX4 lockstep: enabled -- cmake build type: RelWithDebInfo -- The CXX compiler identification is GNU 9.4.0 -- The C compiler identification is GNU 9.4.0 -- The ASM compiler identification is GNU -- Found assembler: /usr/bin/cc -- Check for working CXX compiler: /usr/bin/c++ -- Check for working CXX compiler: /usr/bin/c++ -- works -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - done -- Detecting CXX compile features -- Detecting CXX compile features - done -- Check for working C compiler: /usr/bin/cc -- Check for working C compiler: /usr/bin/cc -- works -- Detecting C compiler ABI info -- Detecting C compiler ABI info - done -- Detecting C compile features -- Detecting C compile features - done -- Building for code coverage -- Found PythonInterp: /usr/bin/python3 (found suitable version "3.8.10", minimum required is "3") -- build type is RelWithDebInfo -- PX4 ECL: Very lightweight Estimation & Control Library v1.9.0-rc1-255-g47624a0 -- Configuring done -- Generating done -- Build files have been written to: /home/tzb/PX4_Firmware/build/px4_sitl_default [0/740] git submodule src/drivers/gps/devices [1/740] git submodule src/lib/ecl [7/740] git submodule mavlink/include/mavlink/v2.0 [10/740] git submodule Tools/sitl_gazebo [18/740] Performing configure step for 'sitl_gazebo' -- install-prefix: /usr/local -- The C compiler identification is GNU 9.4.0 -- The CXX compiler identification is GNU 9.4.0 -- Check for working C compiler: /usr/bin/cc -- Check for working C compiler: /usr/bin/cc -- works -- Detecting C compiler ABI info -- Detecting C compiler ABI info - done -- Detecting C compile features -- Detecting C compile features - done -- Check for working CXX compiler: /usr/bin/c++ -- Check for working CXX compiler: /usr/bin/c++ -- works -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - done -- Detecting CXX compile features -- Detecting CXX compile features - done -- Performing Test COMPILER_SUPPORTS_CXX17 -- Performing Test COMPILER_SUPPORTS_CXX17 - Success -- Performing Test COMPILER_SUPPORTS_CXX14 -- Performing Test COMPILER_SUPPORTS_CXX14 - Success -- Performing Test COMPILER_SUPPORTS_CXX11 -- Performing Test COMPILER_SUPPORTS_CXX11 - Success -- Performing Test COMPILER_SUPPORTS_CXX0X -- Performing Test COMPILER_SUPPORTS_CXX0X - Success -- Using C++17 compiler -- Found Boost: /usr/lib/x86_64-linux-gnu/cmake/Boost-1.71.0/BoostConfig.cmake (found suitable version "1.71.0", minimum required is "1.58") found components: system thread filesystem -- Found PkgConfig: /usr/bin/pkg-config (found version "0.29.1") -- Checking for module 'bullet>=2.82' -- Found bullet, version 2.88 -- Found ccd: /usr/include (found suitable version "2.0", minimum required is "2.0") -- Found fcl: /usr/include (found suitable version "0.5.0", minimum required is "0.3.2") -- Found assimp: /usr/include (found version "5.0.0") -- Found DART: /usr/include (Required is at least version "6.6") found components: dart -- Found Boost: /usr/lib/x86_64-linux-gnu/cmake/Boost-1.71.0/BoostConfig.cmake (found suitable version "1.71.0", minimum required is "1.40.0") found components: thread system filesystem program_options regex iostreams date_time -- Found Protobuf: /usr/lib/x86_64-linux-gnu/libprotobuf.so;-lpthread (found version "3.6.1") -- Looking for ignition-math6 -- found version 6.15.1 -- Searching for dependencies of ignition-math6 -- Looking for OGRE... -- OGRE_PREFIX_WATCH changed. -- Checking for module 'OGRE' -- Found OGRE, version 1.9.0 -- Found Ogre Ghadamon (1.9.0) -- Found OGRE: optimized;/usr/lib/x86_64-linux-gnu/libOgreMain.so;debug;/usr/lib/x86_64-linux-gnu/libOgreMain.so -- Looking for OGRE_Paging... -- Found OGRE_Paging: optimized;/usr/lib/x86_64-linux-gnu/libOgrePaging.so;debug;/usr/lib/x86_64-linux-gnu/libOgrePaging.so -- Looking for OGRE_Terrain... -- Found OGRE_Terrain: optimized;/usr/lib/x86_64-linux-gnu/libOgreTerrain.so;debug;/usr/lib/x86_64-linux-gnu/libOgreTerrain.so -- Looking for OGRE_Property... -- Found OGRE_Property: optimized;/usr/lib/x86_64-linux-gnu/libOgreProperty.so;debug;/usr/lib/x86_64-linux-gnu/libOgreProperty.so -- Looking for OGRE_RTShaderSystem... -- Found OGRE_RTShaderSystem: optimized;/usr/lib/x86_64-linux-gnu/libOgreRTShaderSystem.so;debug;/usr/lib/x86_64-linux-gnu/libOgreRTShaderSystem.so -- Looking for OGRE_Volume... -- Found OGRE_Volume: optimized;/usr/lib/x86_64-linux-gnu/libOgreVolume.so;debug;/usr/lib/x86_64-linux-gnu/libOgreVolume.so -- Looking for OGRE_Overlay... -- Found OGRE_Overlay: optimized;/usr/lib/x86_64-linux-gnu/libOgreOverlay.so;debug;/usr/lib/x86_64-linux-gnu/libOgreOverlay.so -- Looking for ignition-math6 -- found version 6.15.1 -- Looking for ignition-transport8 -- found version 8.5.0 -- Searching for dependencies of ignition-transport8 -- Config-file not installed for ZeroMQ -- checking for pkg-config -- Checking for module 'libzmq >= 4' -- Found libzmq , version 4.3.2 -- Found ZeroMQ: TRUE (Required is at least version "4") -- Checking for module 'uuid' -- Found uuid, version 2.34.0 -- Found UUID: TRUE -- Looking for ignition-msgs5 -- found version 5.11.0 -- Searching for dependencies of ignition-msgs5 -- Found Protobuf: /usr/lib/x86_64-linux-gnu/libprotobuf.so;-lpthread (found suitable version "3.6.1", minimum required is "3") -- Looking for ignition-math6 -- found version 6.15.1 -- Checking for module 'tinyxml2' -- Found tinyxml2, version 6.2.0 -- Looking for ignition-msgs5 -- found version 5.11.0 -- Looking for ignition-common3 -- found version 3.17.0 -- Searching for dependencies of ignition-common3 -- Looking for dlfcn.h - found -- Looking for libdl - found -- Found DL: TRUE -- Searching for <ignition-common3> component [graphics] -- Looking for ignition-common3-graphics -- found version 3.17.0 -- Searching for dependencies of ignition-common3-graphics -- Looking for ignition-math6 -- found version 6.15.1 -- Looking for ignition-fuel_tools4 -- found version 4.9.1 -- Searching for dependencies of ignition-fuel_tools4 -- Found CURL: /usr/lib/x86_64-linux-gnu/libcurl.so (found version "7.68.0") -- Checking for module 'jsoncpp' -- Found jsoncpp, version 1.7.4 -- Found JSONCPP: TRUE -- Checking for module 'yaml-0.1' -- Found yaml-0.1, version 0.2.2 -- Found YAML: TRUE -- Checking for module 'libzip' -- Found libzip, version 1.5.1 -- Found ZIP: TRUE -- Looking for ignition-common3 -- found version 3.17.0 -- Looking for ignition-math6 -- found version 6.15.1 -- Looking for ignition-msgs5 -- found version 5.11.0 -- Found PythonInterp: /usr/bin/python3 (found suitable version "3.8.10", minimum required is "3") -- Found OpenCV: /usr (found version "4.2.0") -- Found TinyXML: /usr/lib/x86_64-linux-gnu/libtinyxml.so -- Checking for module 'gstreamer-1.0 >= 1.0' -- Found gstreamer-1.0 , version 1.16.3 -- Checking for module 'gstreamer-base-1.0 >= 1.0' -- Found gstreamer-base-1.0 , version 1.16.3 -- Found GStreamer: GSTREAMER_INCLUDE_DIRS;GSTREAMER_LIBRARIES;GSTREAMER_VERSION;GSTREAMER_BASE_INCLUDE_DIRS;GSTREAMER_BASE_LIBRARIES (Required is at least version "1.0") -- Checking for module 'OGRE' -- Found OGRE, version 1.9.0 -- Building klt_feature_tracker without catkin -- Building OpticalFlow with OpenCV -- Found MAVLink: /home/tzb/PX4_Firmware/mavlink/include (found version "2.0") -- catkin DISABLED -- Found Protobuf: /usr/lib/x86_64-linux-gnu/libprotobuf.so;-lpthread (found version "3.6.1") -- Checking for module 'protobuf' -- Found protobuf, version 3.6.1 -- Gazebo version: 11.15 -- Found GStreamer: adding gst_camera_plugin -- Found GStreamer: adding gst_video_stream_widget -- Configuring done -- Generating done -- Build files have been written to: /home/tzb/PX4_Firmware/build/px4_sitl_default/build_gazebo [586/740] Performing build step for 'sitl_gazebo' [11/100] Generating /home/tzb/PX4_Firm...ls/mb1240-xl-ez4/mb1240-xl-ez4-gen.sdf /home/tzb/PX4_Firmware/Tools/sitl_gazebo/models/mb1240-xl-ez4/mb1240-xl-ez4.sdf.jinja -> /home/tzb/PX4_Firmware/Tools/sitl_gazebo/models/mb1240-xl-ez4/mb1240-xl-ez4-gen.sdf [12/100] Generating /home/tzb/PX4_Firm..._gazebo/models/px4flow/px4flow-gen.sdf /home/tzb/PX4_Firmware/Tools/sitl_gazebo/models/px4flow/px4flow.sdf.jinja -> /home/tzb/PX4_Firmware/Tools/sitl_gazebo/models/px4flow/px4flow-gen.sdf [13/100] Generating /home/tzb/PX4_Firm...models/3DR_gps_mag/3DR_gps_mag-gen.sdf /home/tzb/PX4_Firmware/Tools/sitl_gazebo/models/3DR_gps_mag/3DR_gps_mag.sdf.jinja -> /home/tzb/PX4_Firmware/Tools/sitl_gazebo/models/3DR_gps_mag/3DR_gps_mag-gen.sdf [14/100] Generating /home/tzb/PX4_Firm...s/sitl_gazebo/models/c920/c920-gen.sdf /home/tzb/PX4_Firmware/Tools/sitl_gazebo/models/c920/c920.sdf.jinja -> /home/tzb/PX4_Firmware/Tools/sitl_gazebo/models/c920/c920-gen.sdf [15/100] Generating /home/tzb/PX4_Firm...models/matrice_100/matrice_100-gen.sdf /home/tzb/PX4_Firmware/Tools/sitl_gazebo/models/matrice_100/matrice_100.sdf.jinja -> /home/tzb/PX4_Firmware/Tools/sitl_gazebo/models/matrice_100/matrice_100-gen.sdf [16/100] Generating /home/tzb/PX4_Firm...sitl_gazebo/models/sf10a/sf10a-gen.sdf /home/tzb/PX4_Firmware/Tools/sitl_gazebo/models/sf10a/sf10a.sdf.jinja -> /home/tzb/PX4_Firmware/Tools/sitl_gazebo/models/sf10a/sf10a-gen.sdf [17/100] Generating /home/tzb/PX4_Firm..._gazebo/models/pixhawk/pixhawk-gen.sdf /home/tzb/PX4_Firmware/Tools/sitl_gazebo/models/pixhawk/pixhawk.sdf.jinja -> /home/tzb/PX4_Firmware/Tools/sitl_gazebo/models/pixhawk/pixhawk-gen.sdf [18/100] Generating /home/tzb/PX4_Firm...s/sitl_gazebo/models/r200/r200-gen.sdf /home/tzb/PX4_Firmware/Tools/sitl_gazebo/models/r200/r200.sdf.jinja -> /home/tzb/PX4_Firmware/Tools/sitl_gazebo/models/r200/r200-gen.sdf [19/100] Generating /home/tzb/PX4_Firm...Tools/sitl_gazebo/models/iris/iris.sdf [100/100] Linking CXX shared library libgazebo_imu_plugin.so [739/740] cd /home/tzb/PX4_Firmware/bu...zb/PX4_Firmware/build/px4_sitl_default SITL ARGS sitl_bin: /home/tzb/PX4_Firmware/build/px4_sitl_default/bin/px4 debugger: none program: gazebo model: none world: none src_path: /home/tzb/PX4_Firmware build_path: /home/tzb/PX4_Firmware/build/px4_sitl_default empty model, setting iris as default GAZEBO_PLUGIN_PATH :/home/tzb/PX4_Firmware/build/px4_sitl_default/build_gazebo GAZEBO_MODEL_PATH :/home/tzb/PX4_Firmware/Tools/sitl_gazebo/models LD_LIBRARY_PATH /opt/ros/noetic/lib:/home/tzb/PX4_Firmware/build/px4_sitl_default/build_gazebo empty world, setting empty.world as default gzserver: /usr/include/boost/smart_ptr/shared_ptr.hpp:734: typename boost::detail::sp_member_access<T>::type boost::shared_ptr<T>::operator->() const [with T = gazebo::event::Connection; typename boost::detail::sp_member_access<T>::type = gazebo::event::Connection*]: Assertion `px != 0' failed. /home/tzb/PX4_Firmware/Tools/sitl_run.sh：行 124: 8222 已放弃 （核心已转储） gzserver "${src_path}/Tools/sitl_gazebo/worlds/empty.world" SITL COMMAND: "/home/tzb/PX4_Firmware/build/px4_sitl_default/bin/px4" "/home/tzb/PX4_Firmware"/ROMFS/px4fmu_common -s etc/init.d-posix/rcS -t "/home/tzb/PX4_Firmware"/test_data INFO [px4] Creating symlink /home/tzb/PX4_Firmware/ROMFS/px4fmu_common -> /home/tzb/PX4_Firmware/build/px4_sitl_default/tmp/rootfs/etc ______ __ __ ___ | ___ \ \ \ / / / | | |_/ / \ V / / /| | | __/ / \ / /_| | | | / /^\ \ \___ | \_| \/ \/ |_/ px4 starting. INFO [px4] Calling startup script: /bin/sh etc/init.d-posix/rcS 0 INFO [param] selected parameter default file eeprom/parameters_10016 [param] parameter file not found, creating eeprom/parameters_10016 SYS_AUTOCONFIG: curr: 0 -> new: 1 * SYS_AUTOSTART: curr: 0 -> new: 10016 BAT_N_CELLS: curr: 0 -> new: 3 CAL_ACC0_ID: curr: 0 -> new: 1311244 CAL_ACC_PRIME: curr: 0 -> new: 1311244 CAL_GYRO0_ID: curr: 0 -> new: 2294028 CAL_GYRO_PRIME: curr: 0 -> new: 2294028 CAL_MAG0_ID: curr: 0 -> new: 197388 CAL_MAG_PRIME: curr: 0 -> new: 197388 COM_DISARM_LAND: curr: 2.0000 -> new: 0.5000 COM_OBL_ACT: curr: 0 -> new: 2 COM_RC_IN_MODE: curr: 0 -> new: 1 EKF2_ANGERR_INIT: curr: 0.1000 -> new: 0.0100 EKF2_GBIAS_INIT: curr: 0.1000 -> new: 0.0100 COM_ARM_EKF_AB: curr: 0.0017 -> new: 0.0050 EKF2_REQ_GPS_H: curr: 10.0000 -> new: 0.5000 MC_PITCH_P: curr: 6.5000 -> new: 6.0000 MC_PITCHRATE_P: curr: 0.1500 -> new: 0.2000 MC_ROLL_P: curr: 6.5000 -> new: 6.0000 MC_ROLLRATE_P: curr: 0.1500 -> new: 0.2000 MPC_HOLD_MAX_Z: curr: 0.6000 -> new: 2.0000 MPC_Z_VEL_I: curr: 0.1000 -> new: 0.1500 MPC_Z_VEL_P: curr: 0.2000 -> new: 0.6000 MPC_XY_P: curr: 0.9500 -> new: 0.8000 MPC_XY_VEL_P: curr: 0.0900 -> new: 0.2000 MPC_XY_VEL_D: curr: 0.0100 -> new: 0.0160 MPC_SPOOLUP_TIME: curr: 1.0000 -> new: 0.5000 MPC_TKO_RAMP_T: curr: 3.0000 -> new: 1.0000 NAV_ACC_RAD: curr: 10.0000 -> new: 2.0000 NAV_DLL_ACT: curr: 0 -> new: 2 RTL_DESCEND_ALT: curr: 30.0000 -> new: 5.0000 RTL_LAND_DELAY: curr: -1.0000 -> new: 5.0000 RTL_RETURN_ALT: curr: 60.0000 -> new: 30.0000 SDLOG_MODE: curr: 0 -> new: 1 SDLOG_PROFILE: curr: 3 -> new: 131 SDLOG_DIRS_MAX: curr: 0 -> new: 7 SENS_BOARD_X_OFF: curr: 0.0000 -> new: 0.0000 SENS_DPRES_OFF: curr: 0.0000 -> new: 0.0010 TRIG_INTERFACE: curr: 4 -> new: 3 * RTL_DESCEND_ALT: curr: 5.0000 -> new: 10.0000 * RTL_LAND_DELAY: curr: 5.0000 -> new: 0.0000 PWM_MAX: curr: 2000 -> new: 1950 PWM_MIN: curr: 1000 -> new: 1075 GPS_UBX_DYNMODEL: curr: 7 -> new: 6 * SYS_AUTOCONFIG: curr: 1 -> new: 0 INFO [dataman] Unknown restart, data manager file './dataman' size is 11798680 bytes INFO [simulator] Waiting for simulator to accept connection on TCP port 4560 Gazebo multi-robot simulator, version 11.15.1 Copyright (C) 2012 Open Source Robotics Foundation. Released under the Apache 2 License. http://gazebosim.org # # ####### ####### ### ##### ####### ## # # # # # # # # # # # # # # # # # # # # # # # # # ##### # # # # # # # # # # ## # # # # # # # # # ####### # ### ##### ####### This version of Gazebo, now called Gazebo classic, reaches end-of-life in January 2025. Users are highly encouraged to migrate to the new Gazebo using our migration guides (https://gazebosim.org/docs/latest/gazebo_classic_migration/) [Msg] Waiting for master. [Err] [ConnectionManager.cc:121] Failed to connect to master in 30 seconds. [Err] [gazebo_shared.cc:106] Unable to initialize transport. [Err] [gazebo_client.cc:56] Unable to setup Gazebo ^A
08-01
gzserver --verbose /path/to/world.world ``` 该命令将输出详细的初始化信息，有助于识别断言失败的具体原因。此外，可以使用GDB调试器附加到gzserver进程以获取更深入的堆栈信息： ```bash gdb -p <pid> ``` 在...
Linux-CentOS 7-学习笔记
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Linux-CentOS 7-学习笔记
timi@timi--R7000P2021:~/PX4-Autopilot$ make px4_sitl gazebo [0/4] Performing build step for 'sitl_gazebo-classic' ninja: no work to do. [3/4] cd /home/timi/PX4-Autopilot/buil...i/PX4-Autopilot/build/px4_sitl_default SITL ARGS sitl_bin: /home/timi/PX4-Autopilot/build/px4_sitl_default/bin/px4 debugger: none model: iris world: none src_path: /home/timi/PX4-Autopilot build_path: /home/timi/PX4-Autopilot/build/px4_sitl_default GAZEBO_PLUGIN_PATH /home/timi/model_editor_models/Plugin_v0/build::/home/timi/PX4-Autopilot/build/px4_sitl_default/build_gazebo-classic GAZEBO_MODEL_PATH :/home/timi/PX4-Autopilot/Tools/sitl_gazebo/models:/home/timi/PX4-Autopilot/Tools/simulation/gazebo-classic/sitl_gazebo-classic/models LD_LIBRARY_PATH /home/timi/PX4-Autopilot/build/px4_sitl_default/build_gazebo:/opt/ros/noetic/lib:/home/timi/catkin_ws/devel/lib:/opt/ros/noetic/lib:/opt/ros/noetic/lib/x86_64-linux-gnu:/home/timi/PX4-Autopilot/build/px4_sitl_default/build_gazebo-classic empty world, setting empty.world as default Using: /home/timi/PX4-Autopilot/Tools/simulation/gazebo-classic/sitl_gazebo-classic/models/iris/iris.sdf Warning [parser.cc:833] XML Attribute[version] in element[sdf] not defined in SDF, ignoring. gzserver: symbol lookup error: /home/timi/PX4-Autopilot/build/px4_sitl_default/build_gazebo-classic/libgazebo_mavlink_interface.so: undefined symbol: _ZN8mav_msgs4msgs17CommandMotorSpeedC1Ev SITL COMMAND: "/home/timi/PX4-Autopilot/build/px4_sitl_default/bin/px4" "/home/timi/PX4-Autopilot/build/px4_sitl_default"/etc ______ __ __ ___ | ___ \ \ \ / / / | | |_/ / \ V / / /| | | __/ / \ / /_| | | | / /^\ \ \___ | \_| \/ \/ |_/ px4 starting. INFO [px4] startup script: /bin/sh etc/init.d-posix/rcS 0 INFO [init] found model autostart file as SYS_AUTOSTART=10015 INFO [param] selected parameter default file parameters.bson INFO [param] selected parameter backup file parameters_backup.bson SYS_AUTOCONFIG: curr: 0 -> new: 1 SYS_AUTOSTART: curr: 0 -> new: 10015 CAL_ACC0_ID: curr: 0 -> new: 1310988 CAL_GYRO0_ID: curr: 0 -> new: 1310988 CAL_ACC1_ID: curr: 0 -> new: 1310996 CAL_GYRO1_ID: curr: 0 -> new: 1310996 CAL_ACC2_ID: curr: 0 -> new: 1311004 CAL_GYRO2_ID: curr: 0 -> new: 1311004 CAL_MAG0_ID: curr: 0 -> new: 197388 CAL_MAG0_PRIO: curr: -1 -> new: 50 CAL_MAG1_ID: curr: 0 -> new: 197644 CAL_MAG1_PRIO: curr: -1 -> new: 50 SENS_BOARD_X_OFF: curr: 0.0000 -> new: 0.0000 SENS_DPRES_OFF: curr: 0.0000 -> new: 0.0010 INFO [dataman] data manager file './dataman' size is 1208528 bytes INFO [init] PX4_SIM_HOSTNAME: localhost INFO [simulator_mavlink] Waiting for simulator to accept connection on TCP port 4560 Gazebo multi-robot simulator, version 11.15.1 Copyright (C) 2012 Open Source Robotics Foundation. Released under the Apache 2 License. http://gazebosim.org # # ####### ####### ### ##### ####### ## # # # # # # # # # # # # # # # # # # # # # # # # # ##### # # # # # # # # # # ## # # # # # # # # # ####### # ### ##### ####### This version of Gazebo, now called Gazebo classic, reaches end-of-life in January 2025. Users are highly encouraged to migrate to the new Gazebo using our migration guides (https://gazebosim.org/docs/latest/gazebo_classic_migration/) [Msg] Waiting for master. [Err] [ConnectionManager.cc:121] Failed to connect to master in 30 seconds. [Err] [gazebo_shared.cc:106] Unable to initialize transport. [Err] [gazebo_client.cc:56] Unable to setup Gazebo
08-30
<think> 我们正在处理一个编译和运行PX4 SITL (Software in the Loop)仿真时出现的错误。错误信息如下： gzserver: symbol lookup error: /home/timi/PX4-Autopilot/build/px4_sitl_default/build_gazebo-classic/...
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**项目资料：基于网络与物联网架构的分布式农业环境远程监控系统源代码** 本资料包提供了一套完整的分布式农业环境远程监控系统实现方案，该系统融合了现代网络技术与物联网架构，能够实现对农业生产环境的远程、实时、多节点监测与管理。系统源代码经过全面测试，各项功能运行稳定可靠，可供直接部署或二次开发使用。 该资料适用于计算机科学与技术、人工智能、通信工程、自动化、电子信息工程等相关专业的高校师生、科研人员以及行业技术人员参考学习与实践。对于希望深入理解物联网应用开发、分布式系统设计或智慧农业解决方案的学习者而言，本资料具有较高的参考价值。同时，其完整的项目结构也适用于毕业设计、课程设计、项目实践或作为特定功能模块的开发基础。 使用者可根据自身需求，在现有代码框架上进行功能扩展、算法优化或与其他系统进行集成。我们鼓励基于此代码进行合法的学习、研究与创新应用，并通过技术交流共同促进相关领域的技术发展。 资源来源于网络分享，仅用于学习交流使用，请勿用于商业，如有侵权请联系我删除！
从平台“建而无用”到智能化转型，科技园区借助新一代技术转移SaaS系统能实现多大跨越？.docx
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从平台“建而无用”到智能化转型，科技园区借助新一代技术转移SaaS系统能实现多大跨越？
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从产品同质化严重到精细化管理效能，地方政府借助智能化转型方案能实现多大跨越？
基于MATLAB_GUI开发的单机器人多任务路径规划与仓库管理系统模拟平台_集成WMS仓库模拟_TCP通信协议_任务分配算法_路径规划算法_机器人控制系统_GUI界面设计_资源图像.zip
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这是一个针对自动驾驶与机器人路径规划领域的开源项目专注于对经典HybridA算法在ROS机器人操作系统框架下的实现代码进行详尽的中文注释与解析_项目核心是对KarlKu.zip
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这是一个针对自动驾驶与机器人路径规划领域的开源项目专注于对经典HybridA算法在ROS机器人操作系统框架下的实现代码进行详尽的中文注释与解析_项目核心是对KarlKu.zip
赛事预约场馆预约代理fastadmin uniapp，仅供参考，请勿商用
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赛事预约场馆预约代理fastadmin uniapp，仅供参考，请勿商用
对比传统方案，AI+数智服务如何为市场化技术转移机构带来颠覆性变革？.docx
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对比传统方案，AI+数智服务如何为市场化技术转移机构带来颠覆性变革？
地方政府如何借助AI+数智化解决方案突破平台“建而无用”，以打造专业的服务升级？.docx
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地方政府如何借助AI+数智化解决方案突破平台“建而无用”，以打造专业的服务升级？
IM源码，聊天、直播、会议、ssr、webrtc、uniapp、nodejs
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IM源码，聊天、直播、会议、ssr、webrtc、uniapp、nodejs
【遥感影像分类】基于随机森林算法的土地覆盖分类模型构建：NAIP影像多阶段精度验证与区域地理特征提取系统实现
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内容概要：本文介绍了基于Google Earth Engine平台，利用NAIP影像数据与样本点进行土地覆盖分类的完整流程。首先对原始样本点数据进行区域筛选，随后加载并预处理2023年NAIP遥感影像，提取R、G、B、N波段用于建模。通过sampleRegions方法在样本点处提取影像像素值构建训练集，并按比例划分为训练、验证和测试集。采用随机森林分类器（smileRandomForest）进行模型训练，并对影像进行分类，生成土地覆盖分类图。同时开展精度评估，计算训练集、验证集和测试集的混淆矩阵与总体精度。最后将分类结果导出至Google Drive和资产库，支持后续应用。; 适合人群：具备遥感与地理信息系统基础知识，熟悉Earth Engine平台操作的科研人员或技术人员； 使用场景及目标：①实现高分辨率遥感影像的土地覆盖分类；②掌握机器学习在遥感图像解译中的应用流程；③完成分类结果的精度验证与成果导出； 阅读建议：此脚本适用于实际区域的土地覆盖监测项目，建议结合具体研究区调整时间范围、波段组合与样本数据，并注意导出参数设置以避免计算资源超限。
4G 中的分组调度.zip
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1.版本：matlab2014a/2019b/2024b 2.附赠案例数据可直接运行。 3.代码特点：参数化编程、参数可方便更改、代码编程思路清晰、注释明细。 4.适用对象：计算机，电子信息工程、数学等专业的大学生课程设计、期末大作业和毕业设计。
为什么说AI驱动的技术转移平台是科技服务机构提升智能化转型的关键一步？.docx
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为什么说AI驱动的技术转移平台是科技服务机构提升智能化转型的关键一步？
ARM-Linux-GCC 4.4.3交叉编译器安装教程详解
资源摘要信息:"ARM Linux GCC 是一个专门用于 ARM 处理器架构的 Linux 环境下的 GCC（GNU Compiler Collection）交叉编译器。它允许开发者在 x86 架构的计算机上编译出能在 ARM 架构处理器上运行的程序。本资源包含...
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