id stringlengths 15 54 | text stringlengths 3 133k | title stringclasses 1
value |
|---|---|---|
nodenow/time8hhtml_97.txt | ` RCL_RET_OK ` if the time source was successfully finalized, or
` RCL_RET_INVALID_ARGUMENT ` if any arguments are invalid, or
` RCL_RET_ERROR ` an unspecified error occur. | |
nodenow/25045_19.txt | const std::shared_ptr<FindWall::Response> response) {
typeid(request).name(); // non intrusive function to avoid unused value warning
auto message = sensor_msgs::msg::LaserScan();
RCLCPP_INFO(this->get_logger(), "starting to wait for message"... | |
nodenow/time8hhtml_104.txt | ` RCL_RET_OK ` if the difference was computed successfully, or
` RCL_RET_INVALID_ARGUMENT ` if any arguments are invalid, or
` RCL_RET_ERROR ` an unspecified error occur. | |
nodenow/time8hhtml_123.txt | ## ◆ rcl_is_enabled_ros_time_override() | |
nodenow/25045_54.txt | * [ Home ](/)
* [ Categories ](/categories)
* [ FAQ/Guidelines ](/guidelines)
* [ Terms of Service ](http://www.theconstructsim.com/terms_and_conditions/)
* [ Privacy Policy ](http://www.theconstructsim.com/privacy_policy/) | |
nodenow/serviceclientexample_31.txt | } // namespace ros2_examples | |
nodenow/time8hhtml_29.txt | typedef enum [ rcl_clock_type_t
](time_8h.html#a5c734f508ce06aec7974af10ad09d071) [ rcl_clock_type_t
](time_8h.html#a5c734f508ce06aec7974af10ad09d071)
---
Time source type, used to indicate the source of a time measurement. | |
nodenow/time8hhtml_115.txt | [in] | clock | The clock to enable.
---|---|---
Returns | |
nodenow/25045_48.txt | this->laser_forward); RCLCPP_INFO(this->get_logger(), "[LEFT] = '%f'",
this->laser_left); RCLCPP_INFO(this->get_logger(), "[RIGHT] = '%f'",
this->laser_right); RCLCPP_INFO(this->get_logger(), "[FORWARD] = '%f'",
this->laser_forward); RCLCPP_INFO(this->get_logger(), "[BACKWARD] = ... | |
nodenow/WritingASimpleCppSer_91.txt | Linux macOS Windows | |
nodenow/25045_6.txt | can somebody explain me how to use rclcpp::wait_for_message(), and more
specifically inside of a node class please? | |
nodenow/time8hhtml_133.txt | [in] | clock | The clock to update.
---|---|---
[in] | time_value | The new current time.
Returns | |
nodenow/time8hhtml_112.txt | [ rcl_ret_t ](types_8h.html#af66ec2e20118b821dbf3f9b0067e8796)
rcl_enable_ros_time_override | ( | [ rcl_clock_t
](structrcl__clock__t.html) * | _clock_ | ) |
---|---|---|---|---|---
Enable the ROS time abstraction override. | |
nodenow/WritingASimpleCppSer_38.txt | The ` --dependencies ` argument will automatically add the necessary
dependency lines to ` package.xml ` and ` CMakeLists.txt ` . `
example_interfaces ` is the package that includes [ the .srv file
](https://github.com/ros2/example_interfaces/blob/foxy/srv/AddTwoInts.srv) you
will need to structure your requests an... | |
nodenow/time8hhtml_85.txt | [ rcl_ret_t ](types_8h.html#af66ec2e20118b821dbf3f9b0067e8796)
rcl_system_clock_init | ( | [ rcl_clock_t ](structrcl__clock__t.html) * |
_clock_ ,
---|---|---|---
| | [ rcl_allocator_t ](allocator_8h.html#ac7146d98a03ca836efa0d0d77c78984c)
* | _allocator_
| ) | |
Initialize a clock as a ` RCL_SYS... | |
nodenow/time8hhtml_66.txt | [ rcl_ret_t ](types_8h.html#af66ec2e20118b821dbf3f9b0067e8796)
rcl_ros_clock_fini | ( | [ rcl_clock_t ](structrcl__clock__t.html) * |
_clock_ | ) |
---|---|---|---|---|---
Finalize a clock as a ` RCL_ROS_TIME ` time source. | |
nodenow/WritingASimpleCppSer_95.txt | The terminal should return the following message, and then wait: | |
nodenow/25045_43.txt | That works in simulation without using wait_for_message | |
nodenow/25045_38.txt | > I don’t want to use directly a subscriber because I want to make sur to get
> a real message before starting to move. | |
nodenow/time8hhtml_37.txt | ## ◆ rcl_clock_type_t | |
nodenow/WritingASimpleCppSer_58.txt | #### 2.2 Add executable ï | |
nodenow/time8hhtml_7.txt | RCUTILS_NS_TO_MS
](http://docs.ros2.org/ardent/api/rcutils/time_8h.html#a32b8b03e8399363992e8b7b2275072d2)
| Convenience macro to convert nanoseconds to milliseconds. More...
#define | [ RCL_NS_TO_US ](time_8h.html#a3d9a69217c72e18a5b94ac714681ae1c) [
RCUTILS_NS_TO_US
](http://docs.ros2.org/ardent/api/rcutil... | |
nodenow/time8hhtml_107.txt | This function will populate the data of the time_point object with the current
value from it's associated time abstraction. | |
nodenow/clockandtimehtml_1.txt | Clock and Time
This article describes the ROS primitives to support programming which can run
both in real time as well as simulated time which may be faster or slower.
Authors: [ Tully Foote ](https://github.com/tfoote)
Date Written: 2018-07
Last Modified: 2015-12
| |
nodenow/time8hhtml_39.txt | Enumerator
---
RCL_CLOCK_UNINITIALIZED |
RCL_ROS_TIME |
RCL_SYSTEM_TIME |
RCL_STEADY_TIME |
## Function Documentation | |
nodenow/WritingASimpleCppSer_80.txt |
cmake_minimum_required(VERSION 3.5)
project(cpp_srvcli)
find_package(ament_cmake REQUIRED)
find_package(rclcpp REQUIRED)
find_package(example_interfaces REQUIRED)
add_executable(server src/add_two_ints_server.cpp)
ament_target_dependencies(server rclcpp example_interfaces... | |
nodenow/time8hhtml_76.txt | ` RCL_RET_OK ` if the time source was successfully initialized, or
` RCL_RET_INVALID_ARGUMENT ` if any arguments are invalid, or
` RCL_RET_ERROR ` an unspecified error occur. | |
nodenow/WritingASimpleCppSer_18.txt | * Tasks | |
nodenow/WritingASimpleCppSer_100.txt |
[INFO] [rclcpp]: Sum: 5
| |
nodenow/time8hhtml_68.txt | Parameters | |
nodenow/time8hhtml_69.txt | [in] | clock | the handle to the clock which is being initialized
---|---|---
Returns | |
nodenow/WritingASimpleCppSer_37.txt | Your terminal will return a message verifying the creation of your package `
cpp_srvcli ` and all its necessary files and folders. | |
nodenow/WritingASimpleCppSer_14.txt | **Time:** 20 minutes | |
nodenow/time8hhtml_98.txt | ## ◆ rcl_difference_times() | |
nodenow/WritingASimpleCppSer_61.txt | So ` ros2 run ` can find the executable, add the following lines to the end
of the file, right before ` ament_package() ` : | |
nodenow/time8hhtml_18.txt | #define RCL_NS_TO_S [ RCUTILS_NS_TO_S
](http://docs.ros2.org/ardent/api/rcutils/time_8h.html#aa67004f0b6b3206da7b72b7ed8dd7914)
---
Convenience macro to convert nanoseconds to seconds. | |
nodenow/WritingASimpleCppSer_48.txt | #### 2.1 Examine the code ï | |
nodenow/time8hhtml_28.txt | ## ◆ rcl_clock_type_t | |
nodenow/WritingASimpleCppSer_62.txt |
install(TARGETS
server
DESTINATION lib/${PROJECT_NAME})
| |
nodenow/serviceclientexample_9.txt | rclcpp::Client<std_srvs::srv::SetBool>::SharedFuture setbool_future_;
void timer_future(); | |
nodenow/25045_13.txt | What setup do you have (for the service and the laser scan callback)? | |
nodenow/serviceclientexample_13.txt | ServiceClientExample::ServiceClientExample(rclcpp::NodeOptions options) : Node("service_client_example", options)
{
RCLCPP_INFO(get_logger(), "[ServiceClientExample]: initializing"); | |
nodenow/WritingASimpleCppSer_97.txt | Open another terminal, source the setup files from inside ` ros2_ws ` again.
Start the client node, followed by any two integers separated by a space: | |
nodenow/time8hhtml_44.txt | [in] | clock | the handle to the clock which is being queried
---|---|---
Returns | |
nodenow/time8hhtml_73.txt | This will allocate all necessary internal structures, and initialize
variables. It is specifically setting up a ` RCL_STEADY_TIME ` time source. | |
nodenow/WritingASimpleCppSer_108.txt | ## Related content ï | |
nodenow/WritingASimpleCppSer_78.txt | #### 3.2 Add executable ï | |
nodenow/WritingASimpleCppSer_24.txt | * Next steps | |
nodenow/25045_24.txt | 1 Like | |
nodenow/WritingASimpleCppSer_21.txt | * 3 Write the client node | |
nodenow/serviceclientexample_26.txt | /* timer_callback() //{ */ | |
nodenow/time8hhtml_86.txt | Initialize the clock as a ` RCL_SYSTEM_TIME ` time source. | |
nodenow/WritingASimpleCppSer_117.txt | In Development | |
nodenow/WritingASimpleCppSer_54.txt | * Creates a node named ` add_two_ints_server ` :
std::shared_ptr<rclcpp::Node> node = rclcpp::Node::make_shared("add_two_ints_server");
| |
nodenow/time8hhtml_110.txt | ` RCL_RET_OK ` if the last call time was retrieved successfully, or
` RCL_RET_INVALID_ARGUMENT ` if any arguments are invalid, or
` RCL_RET_ERROR ` an unspecified error occur. | |
nodenow/time8hhtml_49.txt | Parameters | |
nodenow/time8hhtml_89.txt | [in] | clock | the handle to the clock which is being initialized
---|---|---
[in] | allocator | The allocator to use for allocations
Returns | |
nodenow/time8hhtml_11.txt | ## ◆ RCL_S_TO_NS | |
nodenow/WritingASimpleCppSer_9.txt | * * * | |
nodenow/25045_45.txt | rmw_qos_profile_services_default, callback_group_1_);
publisher_ =
this->create_publisher<geometry_msgs::msg::Twist>("cmd_vel", 1);
this->laser_left = 0.0;
this->laser_right = 0.0;
this->laser_forward = 0.0;
this->laser_backward = 0.0;
}
... | |
nodenow/WritingASimpleCppSer_55.txt | * Creates a service named ` add_two_ints ` for that node and automatically advertises it over the networks with the ` &add ` method:
rclcpp::Service<example_interfaces::srv::AddTwoInts>::SharedPtr service =
node->create_service<example_interfaces::srv::AddTwoInts>("add_two_ints", &add);
| |
nodenow/time8hhtml_96.txt | [in] | clock | the handle to the clock which is being initialized.
---|---|---
Returns | |
nodenow/WritingASimpleCppSer_6.txt | * [ Contributing to ROS 2 Documentation ](../../The-ROS2-Project/Contributing/Contributing-To-ROS-2-Documentation.html)
* [ Features Status ](../../The-ROS2-Project/Features.html)
* [ Feature Ideas ](../../The-ROS2-Project/Feature-Ideas.html)
* [ Roadmap ](../../The-ROS2-Project/Roadmap.html)
* [ ... | |
nodenow/time8hhtml_131.txt | This function will update the internal storage for the ` RCL_ROS_TIME ` time
source. If queried and override enabled the time source will return this
value, otherwise it will return the system time. | |
nodenow/WritingASimpleCppSer_41.txt | #### 1.1 Update ` package.xml ` ï | |
nodenow/serviceclientexample_0.txt | #include <rclcpp/rclcpp.hpp> | |
nodenow/serviceclientexample_24.txt | // a timer callback should never block for too long, so all checks should return after a while
void ServiceClientExample::timer_future()
{
// if the future is already waiting for a result, check if we got one
if (setbool_future_.valid())
{
const std::future_status status = setbool_future_.wait... | |
nodenow/time8hhtml_118.txt | [ rcl_ret_t ](types_8h.html#af66ec2e20118b821dbf3f9b0067e8796)
rcl_disable_ros_time_override | ( | [ rcl_clock_t
](structrcl__clock__t.html) * | _clock_ | ) |
---|---|---|---|---|---
Disable the ROS time abstraction override. | |
nodenow/time8hhtml_127.txt | [in] | clock | The clock to query.
---|---|---
[out] | is_enabled | Whether the override is enabled..
Returns | |
nodenow/25045_8.txt |
while (!rclcpp::wait_for_message(message, node_, "scan",1)) {
RCLCPP_INFO(this->get_logger(), "still waiting for message");
}
| |
nodenow/WritingASimpleCppSer_102.txt |
[INFO] [rclcpp]: Incoming request
a: 2 b: 3
[INFO] [rclcpp]: sending back response: [5]
| |
nodenow/time8hhtml_119.txt | This method will disable the ` RCL_ROS_TIME ` time abstraction override
values, such that the time source will report the system time even if a custom
value has been set. | |
nodenow/time8hhtml_121.txt | [in] | clock | The clock to disable.
---|---|---
Returns | |
nodenow/WritingASimpleCppSer_7.txt | __ [ ROS 2 Documentation: Foxy ](../../index.html) | |
nodenow/25045_12.txt | You could provide more context here. Which exercise are you trying to solve
exactly? | |
nodenow/25045_20.txt | What is strange is that rqt_graph shows that I subscribed to the topic but it
doesn’t get any value: | |
nodenow/WritingASimpleCppSer_39.txt |
int64 a
int64 b
---
int64 sum
| |
nodenow/WritingASimpleCppSer_112.txt | © Copyright 2024, Open Robotics. | |
nodenow/WritingASimpleCppSer_28.txt | The example used here is a simple integer addition system; one node requests
the sum of two integers, and the other responds with the result. | |
nodenow/clockandtimehtml_18.txt | RCL implementation
In ` rcl ` there will be datatypes and methods to implement each of the three
time abstractions for each of the core datatypes. However at the ` rcl ` level
the implementation will be incomplete as it will not have a threading model
and will rely on the higher level implementation to provide any t... | |
nodenow/WritingASimpleCppSer_73.txt | The ` while ` loop gives the client 1 second to search for service nodes in
the network. If it canât find any, it will continue waiting. | |
nodenow/WritingASimpleCppSer_88.txt | Linux macOS Windows | |
nodenow/time8hhtml_126.txt | Parameters | |
nodenow/time8hhtml_26.txt | ## ◆ rcl_duration_value_t | |
nodenow/serviceclientexample_30.txt | // The callback function for service call response.
// This function will be executed once the other side decides to respond to the service call.
void ServiceClientExample::setbool_callback(rclcpp::Client<std_srvs::srv::SetBool>::SharedFuture future)
{
// the future must be ready now that the callback was c... | |
nodenow/serviceclientexample_2.txt | using namespace std::chrono_literals; | |
nodenow/25045_55.txt | Powered by [ Discourse ](https://www.discourse.org) , best viewed with
JavaScript enabled | |
nodenow/time8hhtml_13.txt | ## ◆ RCL_MS_TO_NS | |
nodenow/WritingASimpleCppSer_77.txt | Then the client sends its request, and the node spins until it receives its
response, or fails. | |
nodenow/time8hhtml_12.txt | #define RCL_S_TO_NS [ RCUTILS_S_TO_NS
](http://docs.ros2.org/ardent/api/rcutils/time_8h.html#a09bb0400aa6b85f877d616e7475aa173)
---
Convenience macro to convert seconds to nanoseconds. | |
nodenow/serviceclientexample_14.txt | // | --------------------- service client --------------------- | | |
nodenow/time8hhtml_99.txt | [ rcl_ret_t ](types_8h.html#af66ec2e20118b821dbf3f9b0067e8796)
rcl_difference_times | ( | [ rcl_time_point_t
](structrcl__time__point__t.html) * | _start_ ,
---|---|---|---
| | [ rcl_time_point_t ](structrcl__time__point__t.html) * | _finish_ ,
| | [ rcl_duration_t ](structrcl__duration__t.html) * | ... | |
nodenow/time8hhtml_67.txt | This will deallocate all necessary internal structures, and clean up any
variables. It is specifically setting up a ` RCL_ROS_TIME ` time source. It is
expected to be paired with the init fuction. | |
nodenow/WritingASimpleCppSer_67.txt | {
RCLCPP_INFO(rclcpp::get_logger("rclcpp"), "Sum: %ld", result.get()->sum);
} else {
RCLCPP_ERROR(rclcpp::get_logger("rclcpp"), "Failed to call service add_two_ints");
}
rclcpp::shutdown();
return 0;
}
| |
nodenow/time8hhtml_80.txt | This will deallocate all necessary internal structures, and clean up any
variables. It is specifically setting up a steady time source. It is expected
to be paired with the init fuction. | |
nodenow/serviceclientexample_15.txt | service_client_ = create_client<std_srvs::srv::SetBool>("~/set_bool_out"); | |
nodenow/time8hhtml_9.txt | [ rcl_ret_t ](types_8h.html#af66ec2e20118b821dbf3f9b0067e8796) | [
rcl_ros_clock_init ](time_8h.html#abb633aa71d9479bbf66c3fbc55d28f4a) ( [
rcl_clock_t ](structrcl__clock__t.html) *clock, [ rcl_allocator_t
](allocator_8h.html#ac7146d98a03ca836efa0d0d77c78984c) *allocator)
| Initialize a clock as a RCL_ROS_TIME time... | |
nodenow/serviceclientexample_16.txt | // | -------------------------- timer ------------------------- | | |
nodenow/25045_23.txt | \-----EDIT------
It appears that my last problem was due to the fact that for some reason the
turtle bot didn’t publish values on the topic.
This code worked for me. | |
nodenow/WritingASimpleCppSer_68.txt | #### 3.1 Examine the code ï |
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